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LabVIEW TM Core 2 Exercises Course Software Version 2012 August 2012 Edition Part Number 325293D-01 LabVIEW Core 2 Exercises Copyright © 1993–2012 National Instruments. All rights reserved. Under the copyright laws, this publication may not be reproduced or transmitted in any form, electronic or mechanical, including photocopying, recording, storing in an information retrieval system, or translating, in whole or in part, without the prior written consent of National Instruments Corporation. National Instruments respects the intellectual property of others, and we ask our users to do the same. NI software is protected by copyright and other intellectual property laws. Where NI software may be used to reproduce software or other materials belonging to others, you may use NI software only to reproduce materials that you may reproduce in accordance with the terms of any applicable license or other legal restriction. End-User License Agreements and Third-Party Legal Notices You can find end-user license agreements (EULAs) and third-party legal notices in the following locations: • Notices are located in the <National Instruments>\_Legal Information and <National Instruments> directories. • EULAs are located in the <National Instruments>\Shared\MDF\Legal\license directory. • Review <National Instruments>\_Legal Information.txt for more information on including legal information in installers built with NI products. Trademarks LabVIEW, National Instruments, NI, ni.com, the National Instruments corporate logo, and the Eagle logo are trademarks of National Instruments Corporation. Refer to the Trademark Information at ni.com/trademarks for other National Instruments trademarks. Other product and company names mentioned herein are trademarks or trade names of their respective companies. Members of the National Instruments Alliance Partner Program are business entities independent from National Instruments and have no agency, partnership, or joint-venture relationship with National Instruments. Patents For patents covering National Instruments products/technology, refer to the appropriate location: Help»Patents in your software, the patents.txt file on your media, or the National Instruments Patent Notice at ni.com/patents.
Transcript of Core 2 LabVIEW - web.cas.suffolk.eduweb.cas.suffolk.edu/faculty/lshatz/ece310s2_2016/Labview...
LabV
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Seve
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xerc
ises
use
a p
lug-
in m
ultif
unct
ion
data
acq
uisi
tion
(DA
Q) d
evic
e co
nnec
ted
to a
DA
Q S
igna
l Acc
esso
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r BN
C 2
120
cont
aini
ng a
tem
pera
ture
sens
or,
func
tion
gene
rato
r, an
d LE
Ds.
If y
ou d
o no
t hav
e th
is h
ardw
are,
you
still
can
com
plet
e th
e ex
erci
ses.
Alte
rnat
e in
stru
ctio
ns a
re p
rovi
ded
for c
ompl
etin
g th
e ex
erci
ses w
ithou
t har
dwar
e. Y
ou a
lso
can
subs
titut
e ot
her h
ardw
are
for t
hose
pre
viou
sly
men
tione
d. F
or e
xam
ple,
you
can
use a
noth
er N
atio
nal I
nstru
men
ts D
AQ
dev
ice
conn
ecte
d to
a si
gnal
sour
ce, s
uch
as a
func
tion
gene
rato
r.
C.
Wha
t You
Nee
d to
Get
Sta
rted
Bef
ore
you
use
this
cou
rse
man
ual,
mak
e su
re y
ou h
ave
all o
f the
follo
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g ite
ms:
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ompu
ter r
unni
ng W
indo
ws 7
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ta/X
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ultif
unct
ion
DA
Q d
evic
e co
nfig
ured
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ev1
usin
g M
easu
rem
ent &
Aut
omat
ion
Expl
orer
(MA
X)
D
AQ
Sig
nal A
cces
sory
or B
NC
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0, w
ires,
and
cabl
e
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iona
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ter
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late
r
La
bVIE
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ore
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urse
CD
, fro
m w
hich
you
inst
all t
he fo
llow
ing
fold
ers:
D.
Inst
allin
g th
e C
ours
e S
oftw
are
Com
plet
e th
e fo
llow
ing
step
s to
inst
all t
he c
ours
e so
ftwar
e.
1.In
sert
the
cour
se C
D in
you
r com
pute
r. Th
e L
abV
IEW
Cor
e 2
Cou
rse
Setu
p di
alog
box
app
ears
.
2.C
lick
Inst
all t
he c
ours
e m
ater
ials
.
3.Fo
llow
the
onsc
reen
inst
ruct
ions
to c
ompl
ete
inst
alla
tion
and
setu
p.
Exer
cise
file
s are
loca
ted
in th
e <Exercises>\LabVIEW Core 2\
fold
er.
No
teFo
lder
nam
es in
ang
le b
rack
ets,
such
as <
Exercises>
, ref
er to
fold
ers o
n th
e ro
ot d
irect
ory
of y
our c
ompu
ter.
E.
Cou
rse
Goa
ls
This
cou
rse
prep
ares
you
to d
o th
e fo
llow
ing:
•A
pply
com
mon
des
ign
patte
rns t
hat u
se q
ueue
s and
eve
nts
•U
se e
vent
pro
gram
min
g ef
fect
ivel
y
•Pr
ogra
mm
atic
ally
con
trol u
ser i
nter
face
obj
ects
•Ev
alua
te fi
le I/
O fo
rmat
s and
use
them
in a
pplic
atio
ns
•M
odify
exi
stin
g co
de fo
r im
prov
ed u
sabi
lity
Dir
ecto
ryD
escr
ipti
on
Exercises
Con
tain
s VIs
use
d in
the
cour
se
Solutions
Con
tain
s com
plet
ed c
ours
e ex
erci
ses
Stu
dent
Gui
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.com
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ii
•Pr
epar
e, b
uild
, deb
ug, a
nd d
eplo
y st
and-
alon
e ap
plic
atio
ns
This
cou
rse
does
not
des
crib
e an
y of
the
follo
win
g:
•La
bVIE
W p
rogr
amm
ing
met
hods
cov
ered
in th
e La
bVIE
W C
ore
1 co
urse
•Ev
ery
built
-in V
I, fu
nctio
n, o
r obj
ect;
refe
r to
the
LabV
IEW
Hel
p fo
r mor
e in
form
atio
n ab
out L
abV
IEW
feat
ures
not
des
crib
ed in
this
cou
rse
•D
evel
opin
g a
com
plet
e ap
plic
atio
n fo
r any
stud
ent i
n th
e cl
ass;
refe
r to
the
NI E
xam
ple
Find
er, a
vaila
ble
by se
lect
ing
Hel
p»Fi
nd E
xam
ples
, for
exa
mpl
e V
Is
you
can
use
and
inco
rpor
ate
into
VIs
you
cre
ate
F.C
ours
e C
onve
ntio
ns
The
follo
win
g co
nven
tions
app
ear i
n th
is c
ours
e m
anua
l:
»Th
e »
sym
bol l
eads
you
thro
ugh
nest
ed m
enu
item
s and
dia
log
box
optio
nsto
a fi
nal a
ctio
n. T
he se
quen
ce T
ools
»Ins
trum
enta
tion»
Find
Inst
rum
ent D
rive
rs d
irect
s you
to d
rop
dow
n th
e T
ools
men
u, se
lect
the
Inst
rum
enta
tion
item
, and
fina
lly se
lect
the
Find
In
stru
men
t Dri
vers
opt
ion.
This
icon
den
otes
a ti
p, w
hich
ale
rts y
ou to
adv
isor
y in
form
atio
n.
This
icon
den
otes
a n
ote,
whi
ch a
lerts
you
to im
porta
nt in
form
atio
n.
This
icon
den
otes
a c
autio
n, w
hich
adv
ises
you
of p
reca
utio
ns to
take
to a
void
inju
ry, d
ata
loss
, or a
syst
em c
rash
.
This
icon
indi
cate
s tha
t an
exer
cise
requ
ires a
plu
g-in
DA
Q d
evic
e.
bold
Bol
d te
xt d
enot
es it
ems t
hat y
ou m
ust s
elec
t or c
lick
in th
e so
ftwar
e, su
ch a
s men
u ite
ms a
nd d
ialo
g bo
x op
tions
. Bol
d te
xt a
lso
deno
tes s
ectio
ns o
f dia
log
boxe
s and
har
dwar
e la
bels
.
italic
Italic
text
den
otes
var
iabl
es, e
mph
asis
, a c
ross
-ref
eren
ce, o
r an
intro
duct
ion
to a
key
con
cept
. Ita
lic te
xt a
lso
deno
tes t
ext t
hat i
s a
plac
ehol
der f
or a
wor
d or
val
ue th
at y
ou m
ust s
uppl
y.
monospace
Text
in th
is fo
nt d
enot
es te
xt o
r cha
ract
ers t
hat y
ou sh
ould
ent
er fr
om th
e ke
yboa
rd, s
ectio
ns o
f cod
e, p
rogr
amm
ing
exam
ples
, and
sy
ntax
exa
mpl
es. T
his f
ont i
s als
o us
ed fo
r the
pro
per n
ames
of d
isk
driv
es, p
aths
, dire
ctor
ies,
prog
ram
s, su
bpro
gram
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tines
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nam
es, f
unct
ions
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aria
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es, a
nd e
xten
sion
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monospace bold
Bol
d te
xt in
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font
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otes
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mes
sage
s and
resp
onse
s tha
t the
com
pute
r aut
omat
ical
ly p
rints
to th
e sc
reen
. Thi
s fon
t als
o em
phas
izes
line
s of c
ode
that
are
diff
eren
t fro
m th
e ot
her e
xam
ples
.
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IEW
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iona
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ents
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ing
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aflo
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Exe
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esEx
erci
se 1
-1C
once
pt: C
ompa
ring
Que
ues W
ith L
ocal
Var
iabl
esEx
erci
se 1
-2C
once
pt: C
ompa
ring
Even
t Stru
ctur
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esig
n w
ith P
ollin
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esig
n
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IEW
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iona
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ents
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Exe
rcis
e 1-
1C
once
pt: C
ompa
ring
Que
ues
With
Loc
al V
aria
bles
Goa
lIn
this
exe
rcis
e, y
ou ru
n an
d ex
amin
e a
preb
uilt
prod
ucer
/con
sum
er d
esig
n pa
ttern
VI t
hat t
rans
fers
dat
a th
at a
pro
duce
r loo
p ge
nera
tes t
o co
nsum
er lo
ops u
sing
loca
l va
riabl
es a
nd q
ueue
s.
Des
crip
tion
The
follo
win
g se
ctio
ns d
escr
ibe
how
the
Que
ues v
s Loc
al V
aria
bles
VI d
oes t
he fo
llow
ing.
•C
reat
es a
que
ue.
•Q
ueue
s dat
a th
at th
e pr
oduc
er lo
op g
ener
ates
.
•D
eque
ues d
ata
in th
e co
nsum
er lo
op.
•W
aits
for t
he q
ueue
to e
mpt
y be
fore
exi
ting
the
VI.
•U
ses l
ocal
var
iabl
es to
read
and
dis
play
dat
a fr
om th
e pr
oduc
er lo
op.
Less
on 1
Mov
ing
Bey
ond
Dat
aflo
wni
.com
|1-
4
1.O
pen Queues vs Local Variables.lvproj
in th
e <Exercises>\LabVIEW Core 2\Queues versus Local Variables
dire
ctor
y.
2.D
oubl
e-cl
ick
Que
ues v
s Loc
al V
aria
bles
.vi i
n th
e Pr
ojec
t Exp
lore
r w
indo
w to
ope
n th
e V
I. Th
e fr
ont p
anel
of t
his V
I is s
how
n in
Fig
ure
1-1.
Fig
ure
1-1
. Fr
ont P
anel
of t
he Q
ueue
s vs
Loc
al V
aria
bles
VI
3.R
un th
e V
I. Th
e Pr
oduc
er L
oop
gene
rate
s dat
a an
d tra
nsfe
rs it
to e
ach
cons
umer
loop
usi
ng a
loca
l var
iabl
e an
d a
queu
e. O
bser
ve th
e be
havi
or o
f the
VI w
hen
the
cons
umer
loop
s are
set t
o th
e sa
me
spee
d as
the
prod
ucer
loop
.
4.St
op th
e V
I.
LabV
IEW
Cor
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Exe
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es©
Nat
iona
l Ins
trum
ents
|1-
5
5.D
ispl
ay a
nd e
xam
ine
the
bloc
k di
agra
m fo
r thi
s VI.
The
follo
win
g se
ctio
ns d
escr
ibe
parts
of t
his b
lock
dia
gram
in m
ore
deta
il.
Fig
ure
1-2
. B
lock
Dia
gram
of t
he Q
ueue
s vs
Loc
al V
aria
bles
VI
Less
on 1
Mov
ing
Bey
ond
Dat
aflo
wni
.com
|1-
6
Cre
atin
g a
Que
ueYo
u cr
eate
the
queu
e w
ith c
ode
show
n in
Fig
ure
1-3.
Thi
s cod
e is
loca
ted
to th
e le
ft of
the
prod
ucer
loop
.
Fig
ure
1-3
. C
reat
ing
the
Que
ue
Que
uing
Dat
a G
ener
ated
by
the
Pro
duce
r Lo
op
Fig
ure
1-4
. Q
ueui
ng D
ata
the
Pro
duce
r Lo
op G
ener
ates
1M
ax q
ueue
siz
e—S
ets
the
max
imum
num
ber
of e
lem
ents
that
the
queu
e ca
n ho
ld.
2D
ata
Typ
e nu
mer
ic c
onst
ant—
Wire
d to
the
elem
ent d
ata
typ
e in
put o
f the
Obt
ain
Que
ue fu
nctio
n, s
peci
fies
the
type
of d
ata
that
you
wan
t the
que
ue to
con
tain
.
3O
btai
n Q
ueue
—C
reat
es th
e qu
eue
and
defin
es th
e da
ta ty
pe.
1E
nque
ue E
lem
ent—
Add
s ea
ch d
ata
elem
ent t
he G
ener
ate
Sin
e V
I gen
erat
es in
the
Pro
duce
r Lo
op to
the
back
of t
he q
ueue
.
1 2
3
1
LabV
IEW
Cor
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es©
Nat
iona
l Ins
trum
ents
|1-
7
Deq
ueui
ng D
ata
from
the
Pro
duce
r Lo
op in
side
the
Que
ue C
onsu
mer
Loo
p
Fig
ure
1-5
. D
eque
uing
Dat
a in
side
the
Con
sum
er L
oop
1D
eque
ue E
lem
ent—
Rem
oves
an
elem
ent f
rom
the
fron
t of t
he q
ueue
and
sen
ds th
e da
ta e
lem
ent t
o th
e Q
ueue
Con
sum
er L
oop
wav
efor
m c
hart
.
2G
et Q
ueue
Sta
tus—
Indi
cate
s ho
w m
any
elem
ents
rem
ain
in th
e qu
eue.
In o
rder
to p
roce
ss th
ese
data
ele
men
ts, y
ou m
ust e
xecu
te th
e Q
ueue
Con
sum
er L
oop
fast
er th
an th
e P
rodu
cer
Loop
, or
cont
inue
to p
roce
ss a
fter
the
Pro
duce
r Lo
op s
tops
.
12
Less
on 1
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ing
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ond
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aflo
wni
.com
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8
Wai
ting
for
the
Que
ue to
Em
pty
Fig
ure
1-6
. W
aitin
g fo
r th
e Q
ueue
to E
mpt
y
1W
hile
Loo
p—W
aits
for
the
queu
e to
em
pty
befo
re s
topp
ing
the
VI.
Ref
er to
this
Whi
le L
oop
as th
e Q
ueue
Wai
t Loo
p.
2G
et Q
ueue
Sta
tus—
Ret
urns
info
rmat
ion
abou
t the
cur
rent
sta
te o
f the
que
ue, s
uch
as th
e nu
mbe
r of
dat
a el
emen
ts c
urre
ntly
in th
e qu
eue.
3E
qual
To
0?—
Wire
d to
the
stop
con
ditio
n of
the
Que
ue W
ait L
oop
chec
ks if
the
queu
e is
em
pty.
4R
elea
se Q
ueue
—R
elea
ses
and
clea
rs r
efer
ence
s to
the
queu
e.
5S
impl
e E
rror
Han
dler
—R
epor
ts a
ny e
rror
at t
he e
nd o
f exe
cutio
n.
2 31
5
4
LabV
IEW
Cor
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es©
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iona
l Ins
trum
ents
|1-
9
Loca
l Var
iabl
e C
onsu
mer
Loo
pTh
e Pr
oduc
er L
oop
also
writ
es th
e ge
nera
ted
sine
wav
e da
ta to
a lo
cal v
aria
ble
whi
le th
e Lo
cal V
aria
ble
Con
sum
er L
oop
perio
dica
lly re
ads o
ut th
e si
ne w
ave
data
fr
om th
e sa
me
loca
l var
iabl
e.
Fig
ure
1-7
. Lo
cal V
aria
ble
Con
sum
er L
oop
Test
Loca
l Var
iabl
e C
onsu
mer
Loo
p1.
Switc
h to
the
fron
t pan
el o
f the
Que
ues v
s Loc
al V
aria
bles
VI.
2.R
un th
e V
I.
3.Se
lect
diff
eren
t spe
eds f
or th
e Lo
cal V
aria
ble
Con
sum
er L
oop
and
obse
rve
the
Loca
l Var
iabl
e C
onsu
mer
Loo
p ch
art a
nd th
e re
sults
gen
erat
ed o
n th
e M
issi
ng
Sam
ples
indi
cato
r or D
uplic
ated
Sam
ples
indi
cato
r.
En
sure
that
the
Loo
p Sp
eed
sele
cted
is S
ame
as P
rodu
cer
Loo
p an
d ob
serv
e th
e Pr
oduc
er L
oop
char
t and
the
Loca
l Var
iabl
e C
onsu
mer
Loo
p ch
art.
A ra
ce
cond
ition
may
occ
ur re
sulti
ng in
mis
sed
poin
ts o
r dup
licat
ed d
ata.
Se
lect
2x
from
the
pull-
dow
n m
enu
of th
e L
oop
Spee
d co
ntro
l and
obs
erve
the
Loca
l Var
iabl
e C
onsu
mer
Loo
p ch
art.
A ra
ce c
ondi
tion
occu
rs b
ecau
se d
ata
is c
onsu
med
fast
er th
an it
is p
rodu
ced,
allo
win
g th
e lo
cal v
aria
ble
to re
ad th
e sa
me
valu
e m
ultip
le ti
mes
.
1U
pdat
e C
ount
ers—
Upd
ates
the
coun
ters
for
mis
sed
or d
uplic
ated
sam
ples
.
1
Less
on 1
Mov
ing
Bey
ond
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aflo
wni
.com
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10
Se
lect
1/2
as P
rodu
cer
from
the
pull-
dow
n m
enu
of th
e L
oop
Spee
d co
ntro
l and
obs
erve
the
Loca
l Var
iabl
e C
onsu
mer
Loo
p ch
art.
A ra
ce c
ondi
tion
occu
rs
beca
use
data
is p
rodu
ced
fast
er th
an it
is c
onsu
med
. The
dat
a ch
ange
s bef
ore
the
loca
l var
iabl
e ha
s a c
hanc
e to
read
it.
Se
lect
the
rem
aini
ng o
ptio
ns a
vaila
ble
from
the
pull-
dow
n m
enu
of th
e L
oop
Spee
d co
ntro
l and
obs
erve
the
data
retri
eval
.
4.St
op th
e V
I.
Dat
a tra
nsfe
r bet
wee
n tw
o no
n-sy
nchr
oniz
ed p
aral
lel l
oops
usi
ng lo
cal v
aria
bles
cau
ses a
race
con
ditio
n. T
his o
ccur
s whe
n th
e Pr
oduc
er L
oop
is w
ritin
g a
valu
e to
a lo
cal v
aria
ble
whi
le th
e Lo
cal V
aria
ble
Con
sum
er L
oop
is p
erio
dica
lly re
adin
g ou
t the
val
ue fr
om th
e sa
me
loca
l var
iabl
e. B
ecau
se th
e pa
ralle
l loo
ps a
re n
ot
sync
hron
ized
, the
val
ue c
an b
e w
ritte
n be
fore
it h
as a
ctua
lly b
een
read
or v
ice
vers
a re
sulti
ng in
dat
a st
arva
tion
or d
ata
over
flow
.
Que
ue C
onsu
mer
Loo
p1.
Run
the
VI.
2.Se
lect
the
loop
tim
e sp
eed
of th
e Q
ueue
Con
sum
er L
oop
and
obse
rve
the
Que
ue C
onsu
mer
Loo
p w
avef
orm
cha
rt an
d th
e re
sults
gen
erat
ed o
n th
e Sa
mpl
es in
Q
ueue
indi
cato
r.
En
sure
that
the
Loo
p Sp
eed
sele
cted
is S
ame
as P
rodu
cer
and
obse
rve
the
valu
e of
the
Sam
ples
in Q
ueue
indi
cato
r. Th
e va
lue
shou
ld re
mai
n ze
ro. H
ence
w
ith q
ueue
s, yo
u w
ill n
ot lo
se d
ata
whe
n th
e pr
oduc
er a
nd c
onsu
mer
loop
s are
exe
cutin
g at
the
sam
e ra
te.
Se
lect
2x
from
the
pull-
dow
n m
enu
of th
e L
oop
Spee
d co
ntro
l and
obs
erve
the
valu
e of
the
Sam
ples
in Q
ueue
indi
cato
r. Th
e va
lue
shou
ld re
mai
n ze
ro.
Hen
ce w
ith q
ueue
s, yo
u w
ill n
ot lo
se d
ata
if th
e co
nsum
er lo
op is
exe
cutin
g m
uch
fast
er th
an th
e pr
oduc
er lo
op.
Se
lect
1/2
as P
rodu
cer
from
the
pull-
dow
n m
enu
of th
e L
oop
Spee
d co
ntro
l and
obs
erve
the
valu
e of
the
Sam
ples
in Q
ueue
indi
cato
r. Th
e da
ta p
oint
s ac
cum
ulat
e in
the
queu
e. Y
ou n
eed
to p
roce
ss th
e ac
cum
ulat
ed e
lem
ents
in th
e qu
eue
befo
re re
achi
ng th
e m
axim
um si
ze o
f the
que
ue to
avo
id d
ata
loss
.
Se
lect
the
rem
aini
ng o
ptio
ns a
vaila
ble
from
the
pull-
dow
n m
enu
of th
e L
oop
Spee
d co
ntro
l and
obs
erve
the
sync
hron
izat
ion
of d
ata
trans
fer b
etw
een
the
prod
ucer
loop
and
the
cons
umer
loop
usi
ng q
ueue
s.
3.St
op th
e V
I.
Whe
n th
e Pro
duce
r Loo
p an
d Q
ueue
Con
sum
er L
oop
run
at th
e sam
e spe
ed, t
he n
umbe
r of e
lem
ents
in th
e que
ue re
mai
ns u
ncha
nged
. Whe
n th
e Que
ue C
onsu
mer
Lo
op ru
ns sl
ower
, the
que
ue q
uick
ly b
acks
up
and
the
Prod
ucer
Loo
p m
ust w
ait f
or th
e Q
ueue
Con
sum
er L
oop
to re
mov
e th
e el
emen
ts. W
hen
the
Que
ue
Con
sum
er L
oop
runs
fast
er, t
hequ
eue
quic
kly
empt
ies a
nd th
e co
nsum
er lo
op m
ust w
ait f
or th
e Pr
oduc
er lo
op to
inse
rt el
emen
ts. H
ence
que
ues s
ynch
roni
ze th
e da
ta tr
ansf
er b
etw
een
the
two
inde
pend
ent p
aral
lel l
oops
and
thus
avo
id lo
ss o
r dup
licat
ion
of d
ata.
4.C
lose
the
VI.
Do
not s
ave
chan
ges.
End
of E
xerc
ise
1-1
LabV
IEW
Cor
e 2
Exe
rcis
es©
Nat
iona
l Ins
trum
ents
|1-
11
Exe
rcis
e 1-
2C
once
pt: C
ompa
ring
Eve
nt S
truc
ture
Des
ign
with
Pol
ling
Des
ign
Goa
lTo
con
vert
a po
lling
-bas
ed a
pplic
atio
n to
an
even
t-bas
ed a
pplic
atio
n
Des
crip
tion
Firs
t you
obs
erve
the
beha
vior
of a
pol
ling
VI.
Nex
t, yo
u m
odify
the
polli
ng V
I to
crea
te a
mor
e ef
ficie
nt, e
vent
-driv
en V
I and
obs
erve
the
chan
ges i
n be
havi
or.
Fina
lly, y
ou a
dd d
iffer
ent t
ypes
of e
vent
s to
the
VI.
Tabl
e1-
1 lis
ts th
e ev
ents
you
will
impl
emen
t in
the
UI E
vent
Han
dler
VI y
ou c
reat
e.
Obs
ervi
ng th
e P
ollin
g V
I Beh
avio
r1.
Ope
n an
d ru
n Po
lling
.vi.
O
pen
the Events.lvproj
file
in th
e <Exercises>\LabVIEW Core 2\Events
dire
ctor
y an
d op
en th
e Po
lling
VI f
rom
the
proj
ect.
2.Ex
amin
e th
e pe
rfor
man
ce o
f a p
ollin
g V
I usi
ng th
e W
indo
ws T
ask
Man
ager
.
Pr
ess t
he <
Ctrl
-Alt-
Del
ete>
key
s and
sele
ct S
tart
Tas
k M
anag
er fr
om th
e m
enu.
C
lick
the
Perf
orm
ance
tab
in th
e W
indo
ws T
ask
Man
ager
win
dow
.
Tab
le 1
-1.
Use
r In
terfa
ce E
vent
s
Eve
nt
Eve
nt
Des
crip
tio
n
“Sto
p”: V
alue
Cha
nge
Stop
s the
Whi
le L
oop.
“Tim
e C
heck
”: V
alue
Cha
nge
Dis
play
s a ti
me
stam
p w
hen
you
clic
k th
e T
ime
Che
ck b
utto
n.
“Pan
e”: M
ouse
Dow
nD
ispl
ays t
he c
oord
inat
es o
f the
fron
t pan
el p
oint
you
clic
k.
Pane
l Clo
se?
Han
dles
the
even
t in
whi
ch th
e us
er tr
ies t
o cl
ose
the
runn
ing
VI b
y cl
icki
ng th
e w
indo
w c
lose
but
ton.
“Sto
p”: M
ouse
Ent
erPr
oduc
es a
bee
p w
hen
the
mou
se c
urso
r mov
es o
ver t
he S
top
butto
n.
Less
on 1
Mov
ing
Bey
ond
Dat
aflo
wni
.com
|1-
12
R
un th
e V
I.
N
otic
e ho
w h
igh
the
CPU
usa
ge is
.
St
op th
e V
I and
not
ice
how
the
CPU
usa
ge d
rops
.
3.O
pen
the
bloc
k di
agra
m, t
urn
on e
xecu
tion
high
light
ing,
and
run
the
VI a
gain
.
4.N
otic
e ho
w o
ften
the
Tim
e C
heck
term
inal
send
s dat
a to
the
Cas
e st
ruct
ure
and
how
ofte
n th
e W
hile
Loo
p ite
rate
s.
5.St
op th
e V
I and
turn
off
exe
cutio
n hi
ghlig
htin
g.
Mod
ifyin
g th
e P
ollin
g V
I to
Use
Eve
nts
Inst
ead
of P
ollin
g1.
Save
the
VI a
s UI Event Handler.vi
so y
ou c
an m
odify
it.
Se
lect
Ope
n ad
ditio
nal c
opy
and
add
the
copy
to th
e pr
ojec
t.
2.C
lose
Pol
ling.
vi.
3.O
pen
the
bloc
k di
agra
m o
f Eve
nts.v
i and
mov
e th
e St
op te
rmin
al a
nd th
e Ti
me
Che
ck te
rmin
al o
utsi
de th
e W
hile
Loo
p. Y
ou m
ove
thes
e te
rmin
als i
nto
the
appr
opria
te e
vent
cas
es la
ter i
n th
is e
xerc
ise.
4.D
elet
e th
e C
ase
stru
ctur
e an
d cl
ean
up a
ny b
roke
n w
ires.
5.Pl
ace
an E
vent
stru
ctur
e in
side
the
Whi
le L
oop
betw
een
the
itera
tion
term
inal
and
the
cond
ition
al te
rmin
al.
6.R
ight
-clic
k th
e Ev
ent s
truct
ure
and
sele
ct E
dit E
vent
s Han
dled
by
Thi
s Cas
e fr
om th
e sh
ortc
ut m
enu.
LabV
IEW
Cor
e 2
Exe
rcis
es©
Nat
iona
l Ins
trum
ents
|1-
13
7.C
onfig
ure
the
even
t as s
how
n in
Fig
ure
1-8.
Fig
ure
1-8
. C
onfig
urin
g th
e "S
top"
: Val
ue C
hang
e E
vent
8.C
lick
OK
to c
lose
the
dial
og b
ox.
1C
lick
Sto
p in
the
Eve
nt
So
urc
es p
anel
.
2C
lick
Val
ue
Ch
ang
e in
the
Eve
nts
pan
el.
12
Less
on 1
Mov
ing
Bey
ond
Dat
aflo
wni
.com
|1-
14
9.Pl
ace
a Tr
ue c
onst
ant i
nsid
e th
e ne
w "
Stop
": V
alue
Cha
nge
even
t and
wire
it to
the
cond
ition
al te
rmin
al o
f the
Whi
le L
oop
as sh
own
in F
igur
e1-
9.
Fig
ure
1-9
. E
vent
Str
uctu
re w
ith "
Sto
p": V
alue
Cha
nge
Eve
nt
Obs
ervi
ng th
e B
ehav
ior
of th
e E
vent
-Driv
en V
I1.
Run
the
VI.
2.N
otic
e th
at th
e It
erat
ion
indi
cato
r doe
s not
incr
emen
t.
3.Sw
itch
to th
e bl
ock
diag
ram
and
ena
ble
exec
utio
n hi
ghlig
htin
g.
4.N
otic
e th
at th
e W
hile
Loo
p is
exe
cutin
g th
e fir
st it
erat
ion.
The
Eve
nt st
ruct
ure
is w
aitin
g fo
r an
even
t.
5.D
isab
le e
xecu
tion
high
light
ing
and
switc
h ba
ck to
the
fron
t pan
el.
6.C
lick
the
Stop
but
ton
to st
op th
e V
I.
7.N
otic
e th
at th
e V
I sto
ps ru
nnin
g ev
en th
ough
the
Stop
but
ton
is d
isco
nnec
ted.
8.N
otic
e th
at th
e St
op b
utto
n st
ays d
epre
ssed
eve
n th
ough
the
mec
hani
cal a
ctio
n is
set t
o L
atch
Whe
n R
elea
sed.
The
reas
on th
e bu
tton
stay
s dep
ress
ed is
bec
ause
th
e V
I sto
pped
runn
ing
afte
r you
clic
ked
the
butto
n.
1N
ewV
al e
vent
dat
a—R
esiz
e th
e ev
ent d
ata
item
s lis
t so
that
onl
y on
e ite
m d
ispl
ays.
Clic
k th
e ite
m a
nd s
elec
t New
Val
.
1
LabV
IEW
Cor
e 2
Exe
rcis
es©
Nat
iona
l Ins
trum
ents
|1-
15
9.R
eset
the
Stop
but
ton
by c
licki
ng it
aga
in.
10.D
rag
the
term
inal
of t
he S
top
butto
n in
to th
e "S
top"
: Val
ue C
hang
e ev
ent a
s sho
wn
in F
igur
e1-
10.
Fig
ure
1-1
0. "
Sto
p": V
alue
Cha
nge
Eve
nt w
ith S
top
But
ton
Term
inal
11.R
un th
e V
I and
clic
k th
e St
op b
utto
n ag
ain.
12.N
otic
e th
is ti
me
the
VI s
tops
and
the
butto
n re
sets
.
Less
on 1
Mov
ing
Bey
ond
Dat
aflo
wni
.com
|1-
16
Pro
gram
min
g th
e "T
ime
Che
ck":
Val
ue C
hang
e E
vent
1.A
dd a
new
eve
nt c
ase
and
crea
te a
“Ti
me
Che
ck”:
Val
ue C
hang
e ev
ent a
s sho
wn
in F
igur
e1-
11.
R
ight
-clic
k th
e ev
ent s
truct
ure
and
sele
ct A
dd E
vent
Cas
e.
Fig
ure
1-1
1. E
vent
Str
uctu
re w
ith "
Tim
e C
heck
": V
alue
Cha
nge
Eve
nt
2.R
un th
e V
I.
3.C
lick
the
Tim
e C
heck
but
ton
to se
e th
e cu
rren
t tim
e di
spla
y in
the
curr
ent t
ime
indi
cato
r.
4.D
ispl
ay th
e Ta
sk M
anag
er w
indo
w a
nd n
otic
e th
at C
PU u
sage
has
dec
reas
ed w
hen
you
use
even
ts in
stea
d of
pol
ling.
5.St
op th
e V
I.
1In
the
Ed
it E
ven
ts w
indo
w, s
elec
t Tim
e C
hec
k in
the
Eve
nt
So
urc
es p
anel
and
Val
ue
Ch
ang
e in
the
Eve
nts
pan
el.
2M
ove
the
Tim
e C
heck
term
inal
from
out
side
the
Whi
le L
oop
into
the
"Tim
e C
heck
": V
alue
Cha
nge
even
t cas
e.
3G
et D
ate/
Tim
e In
Sec
onds
—C
reat
es a
tim
e st
amp
in m
emor
y.
4In
dica
tor—
Dis
play
s th
e cu
rren
t ti
me
outp
ut o
f the
Get
Dat
e/T
ime
In S
econ
ds fu
nctio
n.
2 31 43
LabV
IEW
Cor
e 2
Exe
rcis
es©
Nat
iona
l Ins
trum
ents
|1-
17
Add
ing
Mor
e N
otifi
er E
vent
s to
the
VI
1.A
dd a
new
eve
nt c
ase
and
crea
te a
Mou
se D
own
even
t as s
how
n in
Fig
ure
1-12
.
Fig
ure
1-1
2. E
vent
Str
uctu
re w
ith "
Pan
e": M
ouse
Dow
n E
vent
2.R
un th
e V
I.
3.C
lick
on d
iffer
ent p
arts
of t
he fr
ont p
anel
.
N
otic
e th
at th
e C
oord
s ind
icat
or d
ispl
ays t
he c
oord
inat
es fo
r eac
h po
int y
ou c
lick.
N
otic
e th
at th
e ot
her e
vent
s con
tinue
to b
ehav
e as
bef
ore.
4.St
op th
e V
I.
1In
the
Ed
it E
ven
ts w
indo
w, s
elec
t Pan
es»P
ane
in th
e E
ven
t S
ou
rces
pan
el a
nd M
ou
se»M
ou
se D
ow
n in
the
Eve
nts
pan
el.
2C
oord
s ev
ent d
ata—
Clic
k th
e ev
ent d
ata
node
and
sel
ect C
oo
rds»
All
Ele
men
ts.
3C
oord
s in
dica
tor—
Rig
ht-c
lick
the
outp
ut o
f the
Co
ord
s ev
ent d
ata
item
and
sel
ect C
reat
e»In
dic
ato
r fr
om th
e sh
ortc
ut m
enu.
1 32
Less
on 1
Mov
ing
Bey
ond
Dat
aflo
wni
.com
|1-
18
Add
ing
Filt
er E
vent
s to
the
VI
1.A
dd a
new
eve
nt c
ase
and
crea
te a
Pan
el C
lose
? ev
ent a
s sho
wn
in F
igur
e1-
13.
Fig
ure
1-1
3. E
vent
Str
uctu
re w
ith P
anel
Clo
se?
Eve
nt
2.Sa
ve a
nd ru
n th
e V
I.
3.C
lick
the
“X”
at th
e to
p-rig
ht o
f the
win
dow
of t
he fr
ont p
anel
.
4.N
otic
e th
at c
licki
ng th
e N
o bu
tton
canc
els t
he e
vent
and
retu
rns t
o th
e V
I.
5.C
licki
ng th
e Y
es b
utto
n st
ops a
nd c
lose
s the
VI.
6.St
op th
e V
I if n
eces
sary
.
1A
fter
you
add
the
even
t, in
the
Ed
it E
ven
ts w
indo
w, s
elec
t <T
his
VI>
in th
e E
ven
t S
ou
rces
pan
el a
nd P
anel
Clo
se?
in th
e E
ven
ts p
anel
.
2E
vent
dat
a no
de—
Clic
k th
e E
vent
Dat
a N
ode
and
sele
ct S
ou
rce
from
the
men
u.
3T
wo
But
ton
Dia
log
func
tion
and
Not
func
tion—
Wire
the
T b
utt
on
? o
utpu
t to
the
Not
func
tion
and
wire
the
Not
func
tion
to th
e D
isca
rd?
even
t filt
er n
ode.
4S
trin
g co
nsta
nt—
Wire
Are
yo
u s
ure
yo
u w
ant
to c
lose
th
e w
ind
ow
? to
the
mes
sag
e in
put.
5Y
es a
nd N
o st
ring
cons
tant
s—W
ire Y
es to
the
T b
utt
on
nam
e ("
OK
") in
put a
nd w
ire N
o to
the
F b
utt
on
nam
e ("
Can
cel"
) in
put.
1 3 2
4 5
LabV
IEW
Cor
e 2
Exe
rcis
es©
Nat
iona
l Ins
trum
ents
|1-
19
Cha
lleng
e1.
If y
ou h
ave
a so
und
card
, add
an
even
t tha
t pro
duce
s a so
und
whe
n th
e cu
rsor
is o
ver t
he S
top
butto
n.
Tip
Use
Qui
ck D
rop
to fi
nd th
e Beep.vi
.
End
of E
xerc
ise
1-2
LabV
IEW
Cor
e 2
Exe
rcis
es©
Nat
iona
l Ins
trum
ents
|
2-12
Impl
emen
ting
Des
ign
Pat
tern
s
Exe
rcis
esEx
erci
se 2
-1Si
mpl
e St
ate
Mac
hine
Tem
plat
eEx
erci
se 2
-2C
once
pt: P
rodu
cer/C
onsu
mer
—Ev
ents
Exer
cise
2-3
Con
cept
: Pro
duce
r/Con
sum
er E
rror
Han
dlin
gEx
erci
se 2
-4H
isto
gram
Exer
cise
2-5
Use
r Acc
ess L
evel
LabV
IEW
Cor
e 2
Exe
rcis
es©
Nat
iona
l Ins
trum
ents
|2-
3
Exe
rcis
e 2-
1S
impl
e S
tate
Mac
hine
Tem
plat
e
Goa
lU
se th
e Si
mpl
e St
ate
Mac
hine
tem
plat
e in
Lab
VIE
W to
cre
ate
an a
pplic
atio
n in
whi
ch u
sers
con
trol t
he a
cqui
sitio
n an
d sa
ving
of w
avef
orm
dat
a.
Sce
nario
You
wan
t to
use
an e
vent
-bas
ed st
ate
mac
hine
des
ign
to b
uild
a ro
bust
app
licat
ion
that
acq
uire
s and
save
s wav
efor
m d
ata.
You
beg
in w
ith th
e Si
mpl
e St
ate
Mac
hine
te
mpl
ate,
whi
ch p
rovi
des a
Lab
VIE
W p
roje
ct fi
le a
nd a
ll th
e su
ppor
ting
VIs
and
type
def
initi
on c
ontro
ls y
ou n
eed
to c
reat
e an
eve
nt-b
ased
stat
e m
achi
ne a
pplic
atio
n.
Des
ign
The
Sim
ple
Stat
e M
achi
ne p
roje
ct te
mpl
ate
prov
ides
doc
umen
tatio
n on
how
to m
odify
the
code
to b
uild
a c
usto
miz
ed st
ate
mac
hine
app
licat
ion.
Onc
e yo
u cr
eate
a
proj
ect u
sing
the t
empl
ate,
you
cust
omiz
e the
code
for d
iffer
ent e
vent
s so
that
they
gen
erat
e, ac
quire
, and
save
wav
efor
m d
ata.
You
use
the G
ener
ate D
ata V
I, av
aila
ble
in th
e Sh
ared
fold
er, t
o ge
nera
te si
ne w
aves
for t
his a
pplic
atio
n. F
inal
ly, y
ou u
pdat
e th
e cu
stom
con
trols
pro
vide
d by
the
defa
ult t
empl
ate
so th
at th
e co
ntro
ls h
andl
e th
e da
ta y
ou g
ener
ate.
Less
on 2
Impl
emen
ting
Des
ign
Pat
tern
sni
.com
|2-
4
Impl
emen
tatio
n1.
Clic
k th
e C
reat
e Pr
ojec
t but
ton
on th
e G
ettin
g St
arte
d w
indo
w.
2.Se
lect
the
Sim
ple
Stat
e M
achi
ne T
empl
ate
as sh
own
in F
igur
e2-
1.
Fig
ure
2-1
. C
reat
e P
roje
ct U
sing
Sim
ple
Sta
te M
achi
ne T
empl
ate
LabV
IEW
Cor
e 2
Exe
rcis
es©
Nat
iona
l Ins
trum
ents
|2-
5
3.C
ompl
ete
the
conf
igur
atio
n of
the
proj
ect a
s sho
wn
in F
igur
e2-
2.
Fig
ure
2-2
. P
roje
ct C
onfig
urat
ion
in th
e C
reat
e P
roje
ct D
ialo
g B
ox
1P
roje
ct N
ame—
Ent
er Acquire and Save
as
the
nam
e of
you
r ne
w p
roje
ct.
2P
roje
ct R
oot—
You
can
use
the
defa
ult l
ocat
ion
on d
isk.
3F
ile N
ame
Pre
fix—
Thi
s pr
efix
bec
omes
par
t of t
he n
ame
of p
roje
ct li
brar
y fil
es a
nd V
Is th
is te
mpl
ate
crea
tes.
Lab
VIE
W a
lso
upda
tes
icon
ban
ners
with
this
pre
fix.
4E
dit O
verla
y—C
lick
this
but
ton
to c
usto
miz
e th
e ic
on fu
rthe
r.
4321
Less
on 2
Impl
emen
ting
Des
ign
Pat
tern
sni
.com
|2-
6
4.C
lick
the
Fini
sh b
utto
n to
cre
ate
and
open
the
Acq
uire
and
Sav
e pr
ojec
t.
5.In
the
Proj
ect E
xplo
rer
win
dow
, not
ice
that
the
proj
ect c
onta
ins d
ocum
enta
tion,
type
def
initi
ons,
and
a m
ain
VI c
alle
d W
MFM
ain.
vi.
6.A
dd th
e Sh
ared
fold
er to
the
Acq
uire
and
Sav
e pr
ojec
t as s
how
n in
Fig
ure
2-3.
Fig
ure
2-3
. A
ddin
g th
e S
hare
d F
olde
r to
the
Pro
ject
7.D
oubl
e-cl
ick
WFM
Mai
n.vi
in th
e Pr
ojec
t Exp
lore
r w
indo
w a
nd re
view
the
tem
plat
e co
mm
ents
on
the
fron
t pan
el.
1R
ight
-clic
k M
y C
om
pu
ter
and
sele
ct A
dd
»Fo
lder
(S
nap
sho
t) fr
om th
e sh
ortc
ut m
enu.
2N
avig
ate
to <Exercises>\LabVIEW Core 2\Shared
and
clic
k th
e C
urr
ent F
old
er b
utto
n to
add
it to
the
proj
ect.
Be
sure
the
Sha
red
fold
er is
ope
n w
hen
you
clic
k th
e C
urre
nt F
olde
r bu
tton.
1
2
LabV
IEW
Cor
e 2
Exe
rcis
es©
Nat
iona
l Ins
trum
ents
|2-
7
8.O
pen
the
bloc
k di
agra
m a
nd n
otic
e th
e W
hile
Loo
p an
d C
ase
stru
ctur
e ty
pica
l of a
stat
e m
achi
ne d
esig
n pa
ttern
as s
how
n Fi
gure
2-4.
Fig
ure
2-4
. W
hile
Loo
p an
d C
ase
Str
uctu
re T
ypic
al o
f Sta
te M
achi
ne D
esig
n
1C
ase
stru
ctur
e—C
onta
ins
a ca
se fo
r ea
ch s
tate
def
ined
in th
e In
itia
l Sta
te ty
pe d
efin
ition
.
2S
hift
regi
ster
s—M
aint
ain
stat
e in
form
atio
n, e
rror
info
rmat
ion,
and
dat
a fr
om o
ne it
erat
ion
of th
e W
hile
Loo
p to
the
next
. The
se r
egis
ters
ens
ure
that
info
rmat
ion
is a
cces
sibl
e in
eac
h ev
ent a
nd c
ase.
3B
lock
dia
gram
com
men
t—H
elps
gui
de y
ou in
upd
atin
g th
e te
mpl
ate.
2
31
Less
on 2
Impl
emen
ting
Des
ign
Pat
tern
sni
.com
|2-
8
9.U
pdat
e th
e fr
ont p
anel
as s
how
n in
Fig
ure
2-5.
Fig
ure
2-5
. U
pdat
ing
the
Fron
t Pan
el
10.O
pen
the
bloc
k di
agra
m a
nd m
ove
the
Wav
efor
m G
raph
term
inal
out
side
the
Whi
le L
oop.
You
will
mov
e it
agai
n la
ter.
Tip
Dou
ble-
clic
k th
e W
avef
orm
Gra
ph o
n th
e fr
ont p
anel
to fi
nd th
e W
avef
orm
Gra
ph te
rmin
al o
n th
e bl
ock
diag
ram
.
1La
bels
—U
pdat
e th
e bu
tton
labe
ls to
Acq
uire
Wav
efor
m a
nd L
og to
File
. The
labe
ls c
orre
spon
d to
the
term
inal
s on
the
bloc
k di
agra
m a
nd a
re d
ispl
ayed
ther
e,
as w
ell.
2B
oole
an T
ext—
Cha
nge
the
Boo
lean
text
dis
play
ed o
n th
e bu
ttons
to A
cqui
re a
nd S
ave.
The
Boo
lean
text
is th
e te
xt d
ispl
ayed
on
the
butto
n.
3W
avef
orm
gra
ph—
Del
ete
com
men
ts b
efor
e ad
ding
the
Wav
efor
m G
raph
.
3
2
1
LabV
IEW
Cor
e 2
Exe
rcis
es©
Nat
iona
l Ins
trum
ents
|2-
9
11.E
dit t
he In
itial
Sta
te ty
pe d
efin
ition
, sho
wn
in F
igur
e2-
6. Fig
ure
2-6
. In
itial
Sta
te T
ype
Def
initi
on
1In
itial
Sta
te ty
pe d
efin
ition
—R
ight
-clic
k th
e In
itial
Sta
te ty
pe d
efin
ition
and
sel
ect O
pen
Typ
e D
ef.
2S
tate
s en
um—
Rig
ht-c
lick
the
Sta
tes
enum
and
sel
ect E
dit
Item
s.
12
Less
on 2
Impl
emen
ting
Des
ign
Pat
tern
sni
.com
|2-
10
12.E
dit t
he e
num
stat
es a
s sho
wn
in F
igur
e2-
7.
Fig
ure
2-7
. S
tate
s E
num
Pro
pert
ies
Dia
log
Box
C
lick
OK
to c
lose
the
dial
og b
ox.
Se
lect
File
»App
ly C
hang
es.
Sa
ve th
e WfmState.ctl
file
and
clo
se th
e co
ntro
l edi
tor w
indo
w.
LabV
IEW
Cor
e 2
Exe
rcis
es©
Nat
iona
l Ins
trum
ents
|2-
11
13.E
dit t
he D
ata
type
def
initi
on so
that
you
can
use
it w
ith th
e w
avef
orm
dat
a in
the
appl
icat
ion.
a.O
pen
and
edit
the
Dat
a ty
pe d
efin
ition
, as s
how
n in
Fig
ure
2-8.
Fig
ure
2-8
. E
ditin
g th
e D
ata
Type
Def
initi
on
Se
lect
File
»App
ly c
hang
es to
app
ly th
e up
date
d ty
pe d
efin
ition
to th
e op
en V
I.
Sa
ve a
nd c
lose
the
cont
rol e
dito
r win
dow
.
C
lose
the
Gen
erat
e D
ata
VI.
1D
ata
type
def
initi
on—
Rig
ht-c
lick
the
Dat
a ty
pe d
efin
ition
and
sel
ect O
pen
Typ
e D
ef.
2D
efau
lt te
mpl
ate
com
pone
nts—
The
tem
plat
e in
clud
es th
ree
data
com
pone
nts
by d
efau
lt: a
Boo
lean
, a s
trin
g, a
nd a
num
eric
. Del
ete
the
defa
ult d
ata
com
pone
nts
from
the
clus
ter
in th
e ty
pe d
efin
ition
.
3O
pen
the
Gen
erat
e D
ata
VI,
loca
ted
in th
e S
har
ed fo
lder
in th
e P
roje
ct E
xplo
rer
win
dow
, and
cop
y th
e Y
con
trol
.
4P
aste
the
Y c
ontr
ol in
side
the
Dat
a ty
pe d
efin
ition
and
ren
ame
the
Y c
ontr
ol to
Arr
ay.
12
34
Less
on 2
Impl
emen
ting
Des
ign
Pat
tern
sni
.com
|2-
12
14.C
ompl
ete
the
Acq
uire
Wav
efor
m c
ase
as sh
own
in F
igur
e2-
9.
D
elet
e th
e B
undl
e by
Nam
e fu
nctio
n an
d th
e O
ne B
utto
n D
ialo
g fu
nctio
n in
this
cas
e be
fore
com
plet
ing
the
bloc
k di
agra
m sh
own
in F
igur
e2-
9.
Fig
ure
2-9
. U
pdat
ing
the
Acq
uire
Wav
efor
m C
ase
1B
undl
e B
y N
ame—
Wire
the
Dat
a ty
pede
f to
the
inpu
t clu
ster
of a
Bun
dle
By
Nam
e fu
nctio
n.
2W
avef
orm
gra
ph te
rmin
al—
Dra
g th
e te
rmin
al fr
om o
utsi
de th
e W
hile
Loo
p in
to th
e A
cqui
re W
avef
orm
cas
e.
3G
ener
ate
Dat
a V
I—O
pen
the
Sha
red
fold
er in
the
Pro
ject
Exp
lore
r w
indo
w a
nd d
rag
the
Gen
erat
e D
ata
VI t
o th
e bl
ock
diag
ram
. Wire
the
Y o
utpu
t to
the
Wav
efor
m G
raph
term
inal
.
4C
reat
e co
nsta
nts
for
the
sig
nal
and
no
ise
inpu
t ter
min
als
of th
e G
ener
ate
Dat
a V
I.
5W
ire th
e Y
out
put o
f the
Gen
erat
e D
ata
VI t
o th
e A
rray
inpu
t of t
he B
undl
e B
y N
ame
func
tion.
21
5 4 3
LabV
IEW
Cor
e 2
Exe
rcis
es©
Nat
iona
l Ins
trum
ents
|2-
13
15.C
ompl
ete
the
Log
to F
ile c
ase
as sh
own
in F
igur
e2-
10. Fig
ure
2-1
0. U
pdat
ing
the
Log
to F
ile C
ase
1C
onve
rt to
Dyn
amic
Dat
a—C
onfig
ure
with
the
follo
win
g op
tions
:
In
pu
t D
ata
Typ
e—1D
arr
ay o
f sca
lars
—si
ngle
cha
nnel
S
cala
r D
ata
Typ
e—F
loat
ing
poin
t num
bers
(do
uble
)
Sta
rt T
ime—
Zer
o
2W
rite
to M
easu
rem
ent F
ile E
xpre
ss V
I—C
onfig
ure
with
the
follo
win
g op
tions
:
A
ctio
n—
Ask
use
r to
cho
ose
file
A
ctio
n—
Ask
eac
h ite
ratio
n
If a
file
alr
ead
y ex
ists
—O
verw
rite
file
Afte
r yo
u co
nfig
ure
the
Writ
e T
o M
easu
rem
ent F
ile E
xpre
ss V
I, rig
ht-c
lick
the
Exp
ress
VI a
nd s
elec
t Vie
w A
s Ic
on
.
3W
ire th
e C
onve
rt to
Dyn
amic
Dat
a fu
nctio
n to
the
Sig
nals
inpu
t of t
he W
rite
To
Mea
sure
men
t File
Exp
ress
VI.
3
21
Less
on 2
Impl
emen
ting
Des
ign
Pat
tern
sni
.com
|2-
14
16.O
pen
the
Stop
cas
e as
show
n in
Fig
ure
2-11
.
Fig
ure
2-1
1. U
pdat
ing
the
Sto
p C
ase
17.C
lick
the
brok
en R
un b
utto
n to
find
err
ors a
nd c
lean
up
the c
ode.
Bec
ause
you
repl
aced
the
data
ele
men
ts in
the
Dat
a ty
pe d
efin
ition
, the
Boo
lean
that
the
Bun
dle
By
Nam
e fu
nctio
n us
es in
som
e ca
ses i
s no
long
er v
alid
. Del
ete
thes
e B
undl
e B
y N
ame
func
tions
and
rew
ire th
e da
ta to
the
shift
regi
ster
.
18.S
ave
the
VI.
1(V
alue
Not
Use
d) e
num
—Y
ou m
ay w
ant t
o up
date
the
labe
l for
read
abili
ty. H
owev
er, t
he a
pplic
atio
n do
es n
ot u
se th
e en
um v
alue
bec
ause
the
Sto
p b
utto
n st
ops
the
loop
bef
ore
the
next
sta
te e
xecu
tes.
1
LabV
IEW
Cor
e 2
Exe
rcis
es©
Nat
iona
l Ins
trum
ents
|2-
15
Test
1.R
un th
e V
I.
2.C
lick
the
Acq
uire
but
ton
mul
tiple
tim
es. T
he W
avef
orm
Gra
ph u
pdat
es w
ith n
ew d
ata
from
eac
h tim
e.
3.C
lick
the
Save
but
ton.
4.W
hen
you
finis
h ac
quiri
ng a
nd sa
ving
dat
a, c
lick
the
Stop
but
ton.
5.Sa
ve a
nd c
lose
the
VI.
End
of E
xerc
ise
2-1
LabV
IEW
Cor
e 2
Exe
rcis
es©
Nat
iona
l Ins
trum
ents
|2-
17
Exe
rcis
e 2-
2C
once
pt: P
rodu
cer/
Con
sum
er—
Eve
nts
Goa
lA
s a g
roup
, exp
lore
the
Prod
ucer
Con
sum
er te
mpl
ate.
Sce
nario
You
have
a V
I tha
t use
s the
Pro
duce
r/Con
sum
er d
esig
n pa
ttern
to p
roce
ss m
essa
ges.
The c
onsu
mer
rate
is sl
ower
than
the p
rodu
cer a
nd th
eref
ore,
a ba
cklo
g is
crea
ted.
Th
e V
I cle
ars m
essa
ges f
rom
the
back
log
in th
e or
der t
he m
essa
ges a
re re
ceiv
ed, u
ntil
a hi
gh p
riorit
y m
essa
ge is
intro
duce
d. H
igh
prio
rity
mes
sage
s are
pro
cess
ed a
s so
on a
s the
y ar
e re
ceiv
ed a
nd th
en th
e V
I res
umes
pro
cess
ing
norm
al p
riorit
y m
essa
ges.
Impl
emen
tatio
n1.
Ope
n th
e Pr
oduc
er C
onsu
mer
pro
ject
loca
ted
in th
e <Exercises>\LabVIEW Core 2\Producer Consumer - Event
dire
ctor
y, a
nd th
en o
pen
the
Mai
n.vi
, sho
wn
in F
igur
e2-
12 fr
om th
e pr
ojec
t.
Fig
ure
2-1
2. P
rodu
cer
Con
sum
er -
Eve
nts
Mai
n V
I Fro
nt P
anel
2.R
un th
e V
I.
3.C
lick
the
Nor
mal
Pri
ority
but
ton.
N
otic
e th
e St
ate
to E
xecu
te in
dica
tor s
ays N
ormal Priority
.
Less
on 2
Impl
emen
ting
Des
ign
Pat
tern
sni
.com
|2-
18
N
otic
e th
at P
roce
ssed
Val
ue in
crea
sed
by 1
.
N
otic
e th
e H
igh
Prio
rity
? B
oole
an in
dica
tor i
s off
.
4.C
lick
the
Nor
mal
Pri
ority
but
ton
seve
ral t
imes
.
N
otic
e th
at th
e B
ackl
og in
dica
tor i
ncre
ases
.
N
otic
e th
at th
e B
ackl
og d
ecre
ases
by
1 ev
ery
seco
nd.
5.C
lick
the
Hig
h Pr
iori
ty b
utto
n.
N
otic
e th
at S
tate
to E
xecu
te sa
ys High Priority
and
the
Proc
esse
d V
alue
indi
cato
r say
s 1000
.
N
otic
e th
e H
igh
Prio
rity
? B
oole
an in
dica
tor i
s on.
6.W
atch
the
flow
of d
ata
on th
e bl
ock
diag
ram
.
Se
lect
Win
dow
»Tile
Lef
t and
Rig
ht.
C
lick
the
Hig
hlig
ht E
xecu
tion
butto
n on
the
bloc
k di
agra
m a
nd th
en ru
n th
e V
I and
wat
ch w
hat h
appe
ns w
hen
you
clic
k th
e N
orm
al P
rior
ity b
utto
n.
C
lick
the
Hig
h Pr
iori
ty b
utto
n.
N
otic
e th
at th
e W
ait (
ms)
in th
e D
efau
lt st
ate
of th
e C
onsu
mer
loop
is se
t to
1000
. Thi
s is w
hat c
ause
s the
pro
cess
ing
of o
ne m
essa
ge p
er se
cond
.
7.D
isab
le H
ighl
ight
Exe
cutio
n.
8.C
lick
the
Nor
mal
Pri
ority
but
ton
seve
ral t
imes
to c
reat
e a
back
log.
9.W
hile
the
back
log
is p
rese
nt c
lick
the
Stop
but
ton.
N
otic
e th
at th
e V
I sto
ps e
ven
thou
gh th
e ba
cklo
g ha
s not
bee
n pr
oces
sed.
Th
e E
nque
ue E
lem
ent a
t Opp
osite
End
func
tion
caus
ed th
is to
occ
ur. I
f the
Sto
p sh
ould
occ
ur a
fter a
ll m
essa
ges i
n th
e ba
cklo
g ar
e pr
oces
sed,
then
this
fu
nctio
n w
ould
be
repl
aced
with
a re
gula
r Enq
ueue
Ele
men
t fun
ctio
n.
LabV
IEW
Cor
e 2
Exe
rcis
es©
Nat
iona
l Ins
trum
ents
|2-
19
10.I
njec
t an
erro
r and
see
wha
t hap
pens
:
D
elet
e th
e er
ror c
lust
er w
ire ru
nnin
g th
roug
h th
e D
efau
lt st
ate
of th
e C
onsu
mer
loop
.
R
ight
-clic
k th
e er
ror o
utpu
t tun
nel o
f the
Cas
e St
ruct
ure
and
sele
ct C
reat
e»C
onst
ant.
R
un th
e V
I aga
in a
nd c
lick
Nor
mal
Pri
ority
.
N
otic
e th
at th
e V
I doe
s not
beh
ave
prop
erly
any
mor
e. T
his i
s bec
ause
an
erro
r in
the
Con
sum
er lo
op h
as c
ause
d th
e C
onsu
mer
loop
to sh
utdo
wn.
Bec
ause
th
e C
onsu
mer
loop
was
doi
ng th
e bu
lk o
f the
wor
k, th
e V
I doe
s not
beh
ave
corr
ectly
. The
Pro
duce
r loo
p is
still
runn
ing.
11.C
lose
the
VI a
nd th
e pr
ojec
t. D
o no
t sav
e yo
ur c
hang
es.
This
VI d
oes n
ot in
clud
e an
y er
ror h
andl
ing.
You
mod
ify a
ver
sion
of t
his V
I in
Exer
cise
2-3
to e
nabl
e er
ror h
andl
ing
so th
e V
I shu
ts d
own
if an
err
or o
ccur
s.
End
of E
xerc
ise
2-2
LabV
IEW
Cor
e 2
Exe
rcis
es©
Nat
iona
l Ins
trum
ents
|2-
21
Exe
rcis
e 2-
3C
once
pt: P
rodu
cer/
Con
sum
er E
rror
Han
dlin
g
Goa
lU
se b
utto
ns to
inje
ct e
rror
s int
o th
e Pr
oduc
er/C
onsu
mer
tem
plat
e to
test
the
erro
r han
dlin
g co
de.
Sce
nario
You
need
to te
st th
e er
ror h
andl
ing
in th
e Pr
oduc
er/C
onsu
mer
des
ign
patte
rn V
I, so
you
will
inje
ct si
mul
ated
err
ors a
s the
VI r
uns.
Des
ign
Add
but
tons
to in
ject
sim
ulat
ed e
rror
s in
the
prod
ucer
loop
and
the
cons
umer
loop
.
Impl
emen
tatio
n1.
Ope
n th
e Pr
oduc
er C
onsu
mer
pro
ject
loca
ted
in th
e <Exercises>\LabVIEW Core 2\Producer Consumer - Error
dire
ctor
y, a
nd th
en o
pen
the
Mai
n.vi
from
the
proj
ect.
This
VI i
s sim
ilar t
o th
e on
e yo
u us
ed in
Exe
rcis
e2-
2. T
he P
rodu
cer E
rror
and
Con
sum
er E
rror
but
tons
are
pro
vide
d on
the
fron
t pan
el, a
s sho
wn
in F
igur
e2-
13.
You
mod
ify th
e bl
ock
diag
ram
to e
nabl
e th
e bu
ttons
and
test
err
or h
andl
ing
in th
is V
I.
Fig
ure
2-1
3. P
rodu
cer
Con
sum
er M
ain
VI F
ront
Pan
el w
ith E
rror
But
tons
Less
on 2
Impl
emen
ting
Des
ign
Pat
tern
sni
.com
|2-
22
2.C
reat
e a
new
eve
nt to
inje
ct a
n er
ror i
nto
the
Prod
ucer
Loo
p as
show
n in
Fig
ure
2-14
.
Fig
ure
2-1
4. P
rodu
cer
Con
sum
er “
Pro
duce
r E
rror
”: V
alue
Cha
nge
Eve
nt
1“P
rodu
cer
Err
or”:
Val
ue C
hang
e E
vent
—R
ight
-clic
k th
e E
vent
Str
uctu
re a
nd s
elec
t Ad
d E
ven
t C
ase.
2P
rodu
cer
Err
or—
Dra
g th
e te
rmin
al in
to th
e ne
w E
vent
Cas
e.
3E
rror
Rin
g C
onst
ant—
Whe
n an
err
or o
ccur
s, th
e V
I sto
ps r
unni
ng a
nd th
e er
ror
mes
sage
you
sel
ect h
ere
is d
ispl
ayed
in a
dia
log
box.
R
efer
to F
igur
e2-
15 to
con
figur
e th
e E
rror
Rin
g C
onst
ant.
2 3
1
LabV
IEW
Cor
e 2
Exe
rcis
es©
Nat
iona
l Ins
trum
ents
|2-
23
3.C
lick
the
Erro
r Rin
g co
nsta
nt a
nd c
onfig
ure
it to
dis
play
the
mes
sage
15: LabVIEW: Resource not found
as s
how
n in
Fig
ure
2-15
.
Fig
ure
2-1
5. S
elec
t Err
or
1E
rror
Cod
e R
ange
—S
elec
t Lab
VIE
W fr
om th
e dr
op-d
own
list.
2E
rror
Cod
e—S
elec
t any
err
or in
the
list a
nd ty
pe 15
to fi
nd th
is e
rror
qui
ckly
.
1 2
Less
on 2
Impl
emen
ting
Des
ign
Pat
tern
sni
.com
|2-
24
4.C
reat
e th
e co
de fo
r the
Con
sum
er E
rror
but
ton
in th
e C
onsu
mer
Loo
p as
show
n in
Fig
ure
2-16
.
Fig
ure
2-1
6. P
rodu
cer
Con
sum
er C
onsu
mer
Err
or C
ode
1C
usto
m E
rror
Cod
e—R
efer
to F
igur
e2-
17 to
cre
ate
a cu
stom
err
or m
essa
ge.
2C
onsu
mer
Err
or—
Dra
g th
e te
rmin
al in
to th
e D
efau
lt ca
se o
f the
Cas
e S
truc
ture
in th
e C
onsu
mer
Loo
p.
21
LabV
IEW
Cor
e 2
Exe
rcis
es©
Nat
iona
l Ins
trum
ents
|2-
25
5.C
lick
the
Erro
r Rin
g co
nsta
nt a
nd c
onfig
ure
it to
dis
play
a C
usto
m E
rror
Cod
e as
show
n in
Fig
ure
2-17
.
Fig
ure
2-1
7. C
usto
m E
rror
Cod
e
6.Sa
ve th
e V
I.
Less
on 2
Impl
emen
ting
Des
ign
Pat
tern
sni
.com
|2-
26
Test
1.R
un M
ain.
vi.
2.Se
nd se
vera
l nor
mal
and
hig
h pr
iorit
y m
essa
ges t
o cr
eate
a b
ackl
og.
3.C
lick
the
Prod
ucer
Err
or b
utto
n.
4.R
un th
e V
I aga
in a
nd se
nd m
ultip
le m
essa
ges.
5.C
lick
the
Con
sum
er E
rror
but
ton.
End
of E
xerc
ise
2-3
LabV
IEW
Cor
e 2
Exe
rcis
es©
Nat
iona
l Ins
trum
ents
|2-
27
Exe
rcis
e 2-
4H
isto
gram
Goa
lM
odify
the
prod
ucer
/con
sum
er te
mpl
ate
to c
reat
e a
hist
ogra
m fr
om a
cqui
red
data
.
Sce
nario
You
wan
t to
crea
te a
n ap
plic
atio
n w
hich
doe
s the
follo
win
g:
•Si
mul
ates
acq
uisi
tion
of a
wav
efor
m.
•Si
mul
ates
pro
cess
ing
of th
e w
avef
orm
whi
ch in
clud
es g
ener
atin
g a
hist
ogra
m.
•Sa
ves a
snap
shot
of a
his
togr
am.
You
can
mod
ify th
e pr
oduc
er/c
onsu
mer
tem
plat
e to
han
dle
thos
e th
ree
task
s as w
ell a
s err
ors a
nd U
I eve
nts f
rom
the
prod
ucer
/con
sum
er te
mpl
ate
itsel
f.
Des
ign
Afte
r cop
ying
the
tem
plat
e, y
ou u
pdat
e th
e pr
oduc
er lo
op to
gen
erat
e w
avef
orm
dat
a an
d yo
u up
date
the
cons
umer
loop
to d
ispl
ay a
his
togr
am a
nd ta
ke a
snap
shot
of
the
hist
ogra
m w
hen
the
user
spec
ifies
.
Less
on 2
Impl
emen
ting
Des
ign
Pat
tern
sni
.com
|2-
28
Impl
emen
tatio
n1.
Mov
e an
d re
nam
e th
e Pr
oduc
er C
onsu
mer
pro
ject
and
file
s.
O
pen
the Producer Consumer.lvproj
loca
ted
in th
e <Exercises>\LabVIEW Core 2\Producer Consumer - Template
dire
ctor
y.
Se
lect
File
»Sav
e A
s and
set t
he sa
ve a
s opt
ions
as s
how
n in
Fig
ure
2-18
, and
then
clic
k th
e C
ontin
ue b
utto
n.
Fig
ure
2-1
8. S
ave
As
Opt
ions
En
ter H
istogram
as t
he n
ame
of th
e pr
ojec
t, an
d sa
ve th
e pr
ojec
t to
the <Exercises>\LabVIEW Core 2\Histogram
dire
ctor
y.
2.C
lose
the
Prod
ucer
Con
sum
er -
Tem
plat
e Pr
ojec
t Exp
lore
r win
dow
.
3.O
pen
His
togr
am.lv
proj
and
rena
me
the
proj
ect V
Is in
Lab
VIE
W so
that
Lab
VIE
W c
an u
pdat
e al
l lin
ks a
nd in
stan
ces o
f the
VIs
.
R
ight
-clic
k M
ain.
vi in
the
Proj
ect E
xplo
rer
win
dow
and
sele
ct R
enam
e.
R
enam
e th
e V
I as H
istogram Main.vi
and
clic
k O
K.
LabV
IEW
Cor
e 2
Exe
rcis
es©
Nat
iona
l Ins
trum
ents
|2-
29
4.A
dd th
e Shared
fold
er to
the
proj
ect a
s an
auto
-pop
ulat
ing
fold
er. T
he S
hare
d fo
lder
con
tain
s the
Gen
erat
e D
ata
VI a
nd th
e R
unni
ng H
isto
gram
VI t
hat y
ou u
se
late
r.
5.O
pen
the
bloc
k di
agra
m o
f the
His
togr
am M
ain
VI.
6.U
pdat
e th
e C
onsu
mer
Mes
sage
type
def
initi
on, s
how
n in
Fig
ure
2-19
to h
andl
e w
avef
orm
dat
a.
Fig
ure
2-1
9. C
onsu
mer
Mes
sage
Typ
e D
efin
ition
1C
onsu
mer
Mes
sage
type
def
initi
on—
Rig
ht-c
lick
the
Con
sum
er M
essa
ge ty
pe d
efin
ition
loca
ted
to th
e le
ft of
the
prod
ucer
loop
on
the
His
togr
am M
ain
VI b
lock
di
agra
m a
nd s
elec
t Op
en T
ype
Def
.
1
Less
on 2
Impl
emen
ting
Des
ign
Pat
tern
sni
.com
|2-
30
M
odify
the
Con
sum
er M
essa
ge ty
pe d
efin
ition
as s
how
n in
Fig
ure
2-20
.
Fig
ure
2-2
0. C
onsu
mer
Mes
sage
Typ
e D
efin
ition
1A
rray
—A
dd a
n ar
ray
to th
e ty
pe d
efin
ition
so
it ca
n ha
ndle
wav
efor
m d
ata.
Ren
ame
the
Arr
ay Signal
.
2N
umer
ic In
dica
tor—
Add
a n
umer
ic in
dica
tor
to th
e ar
ray.
3R
ight
-clic
k th
e cl
uste
r bo
rder
and
sel
ect R
eord
er C
on
tro
ls In
Clu
ster
and
arr
ange
them
so
that
the
Sig
nal c
ontr
ol is
dire
ctly
bel
ow th
e N
um
eric
Dat
a co
ntro
l.
123
LabV
IEW
Cor
e 2
Exe
rcis
es©
Nat
iona
l Ins
trum
ents
|2-
31
A
pply
cha
nges
, sav
e, a
nd c
lose
the
type
def
initi
on.
7.D
ispl
ay th
e ty
pe d
efin
ition
as a
n ic
on o
n th
e bl
ock
diag
ram
as s
how
n in
Fig
ure
2-21
.
Fig
ure
2-2
1. V
iew
ing
a Ty
pe D
efin
ition
as
an Ic
on
1R
ight
-clic
k th
e C
onsu
mer
Mes
sage
type
def
initi
on a
nd s
elec
t Au
toS
izin
g»A
rran
ge
Ver
tica
lly fr
om th
e sh
ortc
ut m
enu.
2R
ight
-clic
k th
e C
onsu
mer
Mes
sage
type
def
initi
on a
nd s
elec
t Vie
w C
lust
er a
s Ic
on
to s
ave
spac
e on
the
bloc
k di
agra
m.
1
2
Less
on 2
Impl
emen
ting
Des
ign
Pat
tern
sni
.com
|2-
32
8.Se
nd si
gnal
dat
a th
roug
h th
e C
onsu
mer
Mes
sage
type
def
initi
on. C
ompl
ete
the
Tim
eout
eve
nt in
the
prod
ucer
loop
as s
how
n in
Fig
ure
2-22
.
Fig
ure
2-2
2. U
pdat
ing
the
Pro
duce
r Lo
op T
imeo
ut E
vent
1C
onsu
mer
Mes
sage
type
def
initi
on—
Cop
y th
e C
onsu
mer
Mes
sage
type
def
initi
on a
nd p
aste
it in
side
the
Tim
eout
eve
nt c
ase.
2B
undl
e B
y N
ame
func
tion—
Wire
the
Con
sum
er M
essa
ge ty
pede
f to
the
inp
ut
clu
ster
inpu
t.
E
xpan
d th
e no
de to
dis
play
two
elem
ents
.
S
elec
t Co
nsu
mer
Sta
te a
nd S
ign
al.
3G
ener
ate
Dat
a V
I—D
rag
the
Gen
erat
e D
ata
VI f
rom
the
Sh
ared
fold
er in
the
Pro
ject
Exp
lore
r w
indo
w in
to th
e T
imeo
ut e
vent
cas
e.
4W
ire th
e Y
out
put o
f the
Gen
erat
e D
ata
VI t
o th
e S
ign
al in
put o
f the
Bun
dle
By
Nam
e fu
nctio
n.
5C
reat
e a
cont
rol f
or th
e si
gn
al in
put o
f the
Gen
erat
e D
ata
VI.
6C
reat
e a
cons
tant
for
the
Co
nsu
mer
Sta
te in
put.
7E
nque
ue E
lem
ent—
Rig
ht-c
lick
the
queu
e w
ire a
nd s
elec
t In
sert
»Qu
eue
Op
erat
ion
s P
alet
te»E
nq
ueu
e E
lem
ent.
W
ire th
e er
ror w
ire th
roug
h th
e E
nque
ue E
lem
ent f
unct
ion
to th
e G
et Q
ueue
Sta
tus
func
tion.
It w
ill a
ppea
r wire
d, b
ut w
hen
you
inse
rt th
e no
de, t
he e
rror
wire
is
beh
ind
the
Enq
ueue
Ele
men
t fun
ctio
n.
6 53 4
1
7
2
LabV
IEW
Cor
e 2
Exe
rcis
es©
Nat
iona
l Ins
trum
ents
|2-
33
9.C
reat
e th
e D
ispl
ay c
ase
in th
e co
nsum
er lo
op a
s sho
wn
in F
igur
e2-
23.
Fig
ure
2-2
3. U
pdat
ing
the
Con
sum
er L
oop
Dis
play
Cas
e
1O
pen
to th
e D
efau
lt ca
se o
f the
Cas
e st
ruct
ure
and
rena
me
the
case
to “Display”, Default
.
2U
nbun
dle
By
Nam
e fu
nctio
n—C
hang
e th
e N
um
eric
Dat
a el
emen
t to
Sig
nal
and
rem
ove
the
Bo
ole
an D
ata
wire
and
ele
men
t.
3R
unni
ng H
isto
gram
VI—
Dra
g th
e R
unni
ng H
isto
gram
VI f
rom
the
Sh
ared
fold
er in
the
Pro
ject
Exp
lore
r w
indo
w.
4N
umer
ic c
ontr
ol—
Cre
ate
a co
ntro
l for
the
bin
s in
put a
nd la
bel t
he c
ontr
ol Bins
.
5X
Y G
raph
(S
ilver
)—O
n th
e fr
ont p
anel
, pla
ce a
n X
Y G
raph
(S
ilver
) an
d re
nam
e it Histogram
.
6B
undl
e fu
nctio
n—W
ire th
e h
isto
gra
m a
nd x
axi
s ou
tput
s fr
om th
e R
unni
ng H
isto
gram
VI t
o th
e B
undl
e fu
nctio
n.
7R
epla
ce th
e rig
ht H
isto
gram
tunn
el w
ith a
shi
ft re
gist
er a
nd c
ompl
ete
the
shift
reg
iste
r.
8W
ire th
e le
ft sh
ift r
egis
ter
to th
e C
ase
stru
ctur
e.
9R
ight
-clic
k th
e H
isto
gram
out
put t
unne
l and
sel
ect L
inke
d In
pu
t tu
nn
el»C
reat
e &
Wir
e U
nw
ired
Cas
es a
nd th
en c
lick
the
His
togr
am in
put t
unne
l on
the
left.
10 R
ight
-clic
k th
e le
ft sh
ift r
egis
ter
and
crea
te a
con
stan
t.
42
77
810
31
6
5
9
Less
on 2
Impl
emen
ting
Des
ign
Pat
tern
sni
.com
|2-
34
10.C
reat
e a
Snap
shot
eve
nt in
the
prod
ucer
loop
by
chan
ging
the
“Hig
h Pr
iorit
y M
essa
ge”:
Val
ue C
hang
e ev
ent,
as sh
own
in F
igur
e2-
24.
Fig
ure
2-2
4. U
pdat
ing
the
Pro
duce
r Lo
op “
Sna
psho
t”: V
alue
Cha
nge
Eve
nt
1C
hang
e th
e ev
ent n
ame—
Cha
nge
the
labe
l of t
he H
igh
Pri
ori
ty b
utto
n to
Snapshot
. Cha
ngin
g th
e na
me
of th
e bu
tton
chan
ges
the
even
t nam
e.
2B
undl
e B
y N
ame
func
tion—
Del
ete
the
valu
es w
ired
to th
e B
oo
lean
Dat
a an
d N
um
eric
Dat
a in
puts
of t
he B
undl
e B
y N
ame
func
tion
and
hide
the
term
inal
s.
3C
hang
e th
e va
lue
of th
e C
on
sum
er S
tate
str
ing
cons
tant
to Snapshot
.
4D
oubl
e-cl
ick
the
Sn
apsh
ot
cont
rol t
o lo
cate
the
butto
n on
the
fron
t pan
el. C
hang
e th
e B
oole
an te
xt d
ispl
ayed
on
the
butto
n to
Snapshot
.
32
1
4
LabV
IEW
Cor
e 2
Exe
rcis
es©
Nat
iona
l Ins
trum
ents
|2-
35
11.A
dd th
e Sn
apsh
ot c
ase
to th
e co
nsum
er lo
op a
s sho
wn
in F
igur
e2-
25.
Fig
ure
2-2
5. U
pdat
ing
the
Con
sum
er L
oop
Sna
psho
t Eve
nt
12.D
elet
e th
e N
orm
al P
riorit
y M
essa
ge e
vent
from
the
Even
t stru
ctur
e in
the
Prod
ucer
Loo
p. L
abV
IEW
del
etes
the
corr
espo
ndin
g bu
tton
from
the
fron
t pan
el.
1D
uplic
ate
the
Initi
aliz
e ca
se—
Rig
ht-c
lick
the
case
str
uctu
re a
nd s
elec
t Du
plic
ate
Cas
e. R
enam
e th
e du
plic
ate
case
Snapshot
.
2U
nbun
dle
func
tion—
Afte
r yo
u w
ire th
e in
put,
the
Unb
undl
e fu
nctio
n co
ntai
ns tw
o 1D
arr
ays.
3B
uild
Arr
ay fu
nctio
n—W
ire b
oth
1D A
rray
out
puts
to th
e B
uild
Arr
ay fu
nctio
n.
4 W
rite
to S
prea
dshe
et F
ile V
I—W
ire th
e ap
pen
ded
arr
ay o
utpu
t of t
he B
uild
Arr
ay fu
nctio
n to
the
2D d
ata
inpu
t.
2
3
41
Less
on 2
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emen
ting
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ign
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tern
sni
.com
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36
13.C
lean
up th
e fr
ont p
anel
of t
he V
I as s
how
n in
Fig
ure
2-26
.
Fig
ure
2-2
6. C
lean
ing
Up
the
Fron
t Pan
el o
f the
His
togr
am M
ain
VI
Test
1.R
un th
e V
I.
2.To
cre
ate
the
look
of a
his
togr
am in
the
char
t, cl
ick
the
plot
lege
nd a
nd se
lect
a h
oriz
onta
l bar
plo
t typ
e fr
om th
e bo
ttom
row
. You
may
als
o w
ant t
o re
mov
e th
e lin
e in
terp
olat
ion
by c
licki
ng th
e pl
ot le
gend
and
sele
ctin
g In
terp
olat
ion
from
the
shor
tcut
men
u.
3.N
otic
e ho
w c
hang
ing
the
Sign
al a
nd B
ins v
alue
s cha
nges
the
look
of t
he h
isto
gram
.
4.C
lick
the
Snap
shot
but
ton.
A fi
le d
ialo
g bo
x di
spla
ys so
you
can
save
the
hist
ogra
m fi
le.
C
hoos
e a
nam
e fo
r the
new
file
, inc
ludi
ng .txt
.
W
hile
the
dial
og b
ox is
ope
n, th
e B
ackl
og in
dica
tor r
ises
.
LabV
IEW
Cor
e 2
Exe
rcis
es©
Nat
iona
l Ins
trum
ents
|2-
37
C
lick
the
Save
but
ton
to sa
ve th
e fil
e.
Th
e B
ackl
og in
dica
tor s
houl
d qu
ickl
y de
crea
se.
5.C
lick
the
Stop
but
ton
to st
op th
e V
I.
6.O
pen
the
save
d te
xt fi
le a
nd re
view
the
cont
ents
to se
e th
e bi
ns a
nd v
alue
s of t
he h
isto
gram
.
7.Sa
ve a
nd c
lose
the
His
togr
am p
roje
ct.
End
of E
xerc
ise
2-4
LabV
IEW
Cor
e 2
Exe
rcis
es©
Nat
iona
l Ins
trum
ents
|2-
39
Exe
rcis
e 2-
5U
ser
Acc
ess
Leve
l
Goa
lTo
cre
ate
a ga
ting
appl
icat
ion,
usi
ng a
func
tiona
l glo
bal v
aria
bles
des
ign
patte
rn, w
hich
rest
ricts
use
r acc
ess t
o ce
rtain
feat
ures
bas
ed o
n di
ffere
nt u
ser a
cces
s lev
els.
Sce
nario
You
need
to c
reat
e an
app
licat
ion
in w
hich
som
e fe
atur
es a
re n
ot a
vaila
ble
to a
ll us
ers.
You
crea
te a
fini
te n
umbe
r of u
ser a
cces
s lev
els a
nd a
ssig
n an
app
ropr
iate
use
r le
vel t
o va
rious
use
rs. Y
ou u
se a
func
tiona
l glo
bal v
aria
ble
desi
gn p
atte
rn to
che
ck fo
r diff
eren
t acc
ess l
evel
s.
Des
ign
The f
ollo
win
g ta
ble d
escr
ibes
the d
iffer
ent a
ctio
ns y
ou n
eed
to h
andl
e so
you
can
impl
emen
t use
r acc
ess c
ontro
l. In
this
exer
cise
, you
crea
te a
cust
om co
ntro
l to
hand
le
thes
e ite
ms.
Act
ion
D
escr
ipti
on
Rea
d U
ser A
cces
s Lev
el F
ileR
eads
info
rmat
ion
abou
t aut
horiz
ed u
sers
and
thei
r acc
ess l
evel
s fro
m a
spec
ified
file
and
stor
es th
is a
cces
s inf
orm
atio
n in
m
emor
y.
Set C
urre
nt A
cces
s Lev
elSe
ts th
e ac
cess
leve
l of t
he c
urre
nt u
ser i
n ap
plic
atio
n m
emor
y.
Get
Cur
rent
Acc
ess L
evel
Ret
rieve
s the
acc
ess l
evel
from
mem
ory
so th
at th
e ap
plic
atio
n ca
n de
term
ine
if a
user
has
acc
ess t
o a
certa
in fe
atur
e.
Less
on 2
Impl
emen
ting
Des
ign
Pat
tern
sni
.com
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40
Impl
emen
tatio
n1.
Ope
n th
e User Level FGV.lvproj
pro
ject
from
<Exercises>\LabVIEW Core 2\FGVs
.
2.O
pen
the
Use
r L
evel
FG
V fo
lder
in th
e Pr
ojec
t Exp
lore
r w
indo
w a
nd th
en o
pen
Use
r A
cces
s Lev
el F
GV
.vi.
The
Use
r Acc
ess L
evel
FG
V V
I alre
ady
cont
ains
se
vera
l ite
ms o
n th
e fr
ont p
anel
, an
icon
, and
con
nect
or p
ane.
3.C
reat
e a
type
-def
ined
enu
m c
ontro
l and
mod
ify th
e fr
ont p
anel
as s
how
n in
Fig
ure
2-27
.
Fig
ure
2-2
7. U
ser
Acc
ess
Leve
l FG
V F
ront
Pan
el
1E
num
(S
ilver
)—R
ight
-clic
k th
e en
um c
ontr
ol a
nd s
elec
t Mak
e T
ype
Def
, and
then
rig
ht-c
lick
and
sele
ct O
pen
Typ
e D
ef.
LabV
IEW
Cor
e 2
Exe
rcis
es©
Nat
iona
l Ins
trum
ents
|2-
41
4.A
dd th
e th
ree
actio
ns li
sted
in th
e D
esig
n se
ctio
n of
this
exe
rcis
e to
the
Use
r Lev
el C
md
type
def
initi
on a
s sho
wn
in F
igur
e2-
28.
Fig
ure
2-2
8. E
ditin
g th
e U
ser
Acc
ess
Leve
l Cm
d E
num
5.Sa
ve th
e en
um a
s User Level Cmd.ctl
in <Exercises>\LabVIEW Core 2\FGVs\User Level FGV
and
clo
se th
e cu
stom
con
trol e
dito
r win
dow
.
6.Fr
om th
e U
ser A
cces
s Lev
el F
GV
VI f
ront
pan
el, a
ssig
n a
term
inal
from
the
top-
leve
l of t
he U
ser A
cces
s Lev
el F
GV
VI c
onne
ctor
pan
e to
the
Use
r L
evel
Cm
d co
ntro
l as s
how
n in
Fig
ure
2-29
.
Fig
ure
2-2
9. A
ssig
n th
e U
ser
Leve
l Cm
d C
ontr
ol to
a C
onne
ctor
Pan
e Te
rmin
al
1E
num
—R
ight
-clic
k an
d se
lect
Edi
t Ite
ms.
1C
onne
ctor
pan
e te
rmin
al—
Clic
k th
is te
rmin
al, t
hen
clic
k th
e U
ser
Lev
el C
md
con
trol
to a
ssig
n th
e co
ntro
l to
the
conn
ecto
r pa
ne te
rmin
al.
R
ight
-clic
k th
e co
nnec
tor
pane
term
inal
and
sel
ect T
his
Co
nn
ecti
on
Is»R
equ
ired
. By
mak
ing
this
term
inal
req
uire
d, a
n ap
plic
atio
n m
ust p
rovi
de a
val
ue to
th
e U
ser
Leve
l Cm
d in
put w
hen
you
use
the
Use
r A
cces
s Le
vel V
I in
anot
her
VI.
1
1
Less
on 2
Impl
emen
ting
Des
ign
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tern
sni
.com
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42
7.C
reat
e th
e fr
amew
ork
for t
he fu
nctio
nal g
loba
l var
iabl
e de
sign
by
com
plet
ing
the
bloc
k di
agra
m a
s sho
wn
in F
igur
e2-
30.
Fig
ure
2-3
0. C
reat
ing
the
Fun
ctio
nal G
loba
l Var
iabl
e D
esig
n Fr
amew
ork
Tip
Use
the
Add
Cas
e fo
r Eve
ry V
alue
opt
ion
whe
n yo
u kn
ow th
at e
ach
case
dia
gram
is si
gnifi
cant
ly d
iffer
ent.
If c
ases
con
tain
sim
ilar s
ubdi
agra
ms,
use
the
Dup
licat
e C
ase
optio
n in
stea
d. A
fter y
ou d
uplic
ate
a ca
se, y
ou c
an m
odify
and
rena
me
it.
1C
ase
sele
ctor
—W
ire th
e E
rro
r In
clu
ster
to th
e ca
se s
elec
tor
of th
e ou
ter
case
str
uctu
re to
set
the
erro
r an
d no
err
or c
ases
.
2C
ase
sele
ctor
—W
ire U
ser
Lev
el C
md
to th
e ca
se s
elec
tor.
3C
ase
stru
ctur
e—R
ight
-clic
k th
e C
ase
stru
ctur
e an
d se
lect
Ad
d C
ase
for
Eve
ry V
alu
e fr
om th
e sh
ortc
ut m
enu
and
then
sel
ect “
Rea
d U
ser
Acc
ess
Leve
l File
”,
Def
ault.
4E
rror
In/E
rror
Out
—W
ire E
rro
r In
to E
rro
r O
ut
thro
ugh
the
defa
ult c
ase.
5W
ire E
rror
In/E
rror
Out
thro
ugh
all c
ases
—R
ight
-clic
k th
e ou
tput
tunn
el a
nd s
elec
t Lin
ked
Inp
ut
Tu
nn
el»C
reat
e &
Wir
e U
nw
ired
Cas
es. W
hen
the
curs
or
chan
ges
to a
wiri
ng to
ol, c
lick
on th
e le
ft-si
de in
put t
unne
l. S
mal
l whi
te tr
iang
les
insi
de th
e in
put a
nd o
utpu
t tun
nels
indi
cate
the
link.
1
55
423
LabV
IEW
Cor
e 2
Exe
rcis
es©
Nat
iona
l Ins
trum
ents
|2-
43
8.C
ompl
ete
the
Rea
d U
ser A
cces
s Lev
el F
ile c
ase
as sh
own
in F
igur
e2-
31.
Fig
ure
2-3
1. C
onfig
urin
g th
e R
ead
Use
r A
cces
s Le
vel F
ile C
ase
1T
he p
ath
to User Access Levels.txt
is r
elat
ive
to w
here
you
sav
e th
e U
ser
Acc
ess
Leve
l FG
V V
I. In
this
cas
e, th
e te
xt fi
le is
in a
par
alle
l dire
ctor
y.
2R
ead
Fro
m S
prea
dshe
et F
ile V
I—C
lick
the
poly
mor
phic
sel
ecto
r an
d se
lect
Str
ing
.
W
ire th
e al
l ro
ws
outp
ut th
roug
h a
tunn
el o
n th
e C
ase
Str
uctu
re to
the
Whi
le L
oop.
3S
hift
regi
ster
—R
ight
-clic
k th
e tu
nnel
and
sel
ect R
epla
ce w
ith
Sh
ift
Reg
iste
r. C
lick
the
left
side
of t
he W
hile
Loo
p to
com
plet
e th
e sh
ift r
egis
ter.
4La
bel—
Rig
ht-c
lick
the
wire
and
sel
ect V
isib
le It
ems»
Lab
el to
sho
w th
e la
bel,
then
type
the
nam
e User Names & Levels
.
5Li
nk th
e ou
tput
tunn
el to
the
corr
espo
ndin
g in
put t
unne
l and
cre
ate
and
wire
unw
ired
case
s of
the
tunn
el.
1
55
2
33
4
Less
on 2
Impl
emen
ting
Des
ign
Pat
tern
sni
.com
|2-
44
9.C
ompl
ete
the
Set C
urre
nt A
cces
s Lev
el c
ase
as sh
own
in F
igur
e2-
32.
Fig
ure
2-3
2.
Con
figur
ing
the
Set
Cur
rent
Acc
ess
Leve
l Cas
e
1In
dex
Arr
ay fu
nctio
n—W
ire th
e U
ser
Nam
es &
Lev
els
wire
to a
n In
dex
Arr
ay fu
nctio
n.
2U
ser
Leve
ls C
olum
n an
d N
ames
Col
umn
cons
tant
s—C
reat
e co
nsta
nts
for
the
ind
ex (
col)
inpu
t of t
he In
dex
Arr
ay fu
nctio
n.
3S
hift
regi
ster
—C
hang
e th
e tu
nnel
to s
hift
regi
ster
.
4R
ight
-clic
k th
e ou
tput
tunn
el a
nd s
elec
t Lin
k In
pu
t T
un
nel
»Cre
ate
& W
ire
All
Un
wir
ed C
ases
.
12
44
3
LabV
IEW
Cor
e 2
Exe
rcis
es©
Nat
iona
l Ins
trum
ents
|2-
45
10.L
eave
the
Get
Cur
rent
Acc
ess L
evel
cas
e as
show
n in
Fig
ure
2-33
.
Fig
ure
2-3
3.
Get
Cur
rent
Acc
ess
Leve
l Cas
e
11.W
ire th
e Er
ror C
ase
as sh
own
in F
igur
e2-
34.
Fig
ure
2-3
4. N
o E
rror
Cas
e
Less
on 2
Impl
emen
ting
Des
ign
Pat
tern
sni
.com
|2-
46
12.S
ave
and
clos
e th
e V
I.
Test
1.Fr
om th
e pro
ject
, ope
n User Access Levels.txt
and
revi
ew th
e con
tent
s of t
he fi
le. T
his f
ile c
onta
ins t
he n
ames
of a
utho
rized
use
rs a
nd th
eir a
cces
s lev
els.
You
can
add
addi
tiona
l use
r nam
es a
nd le
vels
if y
ou w
ant.
2.D
oubl
e-cl
ick
Use
r A
cces
s Lev
el F
GV
Uni
t Tes
t.vi i
n th
e Pr
ojec
t Exp
lore
r w
indo
w to
ope
n th
e V
I. Th
is V
I tak
es a
use
r nam
e yo
u in
put,
sets
the
perm
issi
ons
of th
e V
I to
the
user
's ac
cess
leve
l, an
d te
sts w
heth
er th
e pr
oper
acc
ess l
evel
is se
t.
3.C
ompl
ete
the
“Set
Use
r Acc
ess L
evel
”: V
alue
Cha
nge
even
t as s
how
n in
Fig
ure
2-35
.
Fig
ure
2-3
5. C
ompl
etin
g th
e “S
et U
ser
Acc
ess
Leve
l”: V
alue
Cha
nge
Eve
nt
1U
ser
Acc
ess
Leve
l FG
V V
I—T
his
is th
e V
I you
mod
ified
in th
is e
xerc
ise.
It h
as a
lread
y be
en p
lace
d on
the
bloc
k di
agra
m.
2U
ser
Leve
l Cm
d C
onst
ants
—R
ight
-clic
k th
e U
ser
Leve
l Cm
d in
put a
nd s
elec
t Cre
ate»
Co
nst
ant.
2
2
11
LabV
IEW
Cor
e 2
Exe
rcis
es©
Nat
iona
l Ins
trum
ents
|2-
47
4.C
ompl
ete
the
“Acc
ess S
ecur
e A
rea”
: Val
ue C
hang
e ev
ent c
ase
as sh
own
in F
igur
e2-
36.
Fig
ure
2-3
6. C
ompl
etin
g th
e “A
cces
s S
ecur
e A
rea”
: Val
ue C
hang
e E
vent
5.R
un th
e V
I with
the
follo
win
g us
er n
ames
and
ver
ify th
e us
er le
vel i
s cor
rect
by
clic
king
the
Tes
t Acc
ess L
evel
but
ton.
6.Sa
ve a
nd c
lose
the
proj
ect.
End
of E
xerc
ise
2-5
Use
r N
ame
Use
r L
evel
John
Ope
rato
r
Paul
Adm
in
Geo
rge
Adm
in
Rin
goO
pera
tor
LabV
IEW
Cor
e 2
Exe
rcis
es©
Nat
iona
l Ins
trum
ents
|
3-13
Con
trol
ling
the
Use
r In
terf
ace
Exe
rcis
esEx
erci
se 3
-1D
ispl
ay T
empe
ratu
re a
nd L
imits
Exer
cise
3-2
Cus
tom
izin
g th
e V
I Win
dow
Exer
cise
3-3
Usi
ng S
ubV
Is
LabV
IEW
Cor
e 2
Exe
rcis
es©
Nat
iona
l Ins
trum
ents
|3-
3
Exe
rcis
e 3-
1D
ispl
ay T
empe
ratu
re a
nd L
imits
Goa
lU
se P
rope
rty N
odes
to c
hang
e th
e pr
oper
ties o
f fro
nt p
anel
obj
ects
pro
gram
mat
ical
ly.
Sce
nario
Com
plet
e a
VI t
hat r
ecor
ds te
mpe
ratu
re to
a w
avef
orm
cha
rt. D
urin
g ex
ecut
ion,
the
VI p
erfo
rms t
he fo
llow
ing
task
s:
•D
isab
le a
nd e
nabl
e th
e co
ntro
ls a
t the
star
t and
com
plet
ion
of e
xecu
tion.
•Se
t the
Δx
valu
e of
the
char
t to
the
user
-def
ined
val
ue.
•C
lear
the
wav
efor
m c
hart
so it
initi
ally
con
tain
s no
data
.
•C
halle
nge:
Cha
nge
the
colo
r of a
plo
t if t
he d
ata
exce
eds a
cer
tain
val
ue.
Des
ign
You
build
this
VI i
n fo
ur st
ages
, inc
ludi
ng a
cha
lleng
e.
Part
1—D
isab
le C
ontro
ls
Part
2—En
able
Con
trols
Part
3—C
lear
Cha
rt
Part
4—C
halle
nge:
Cha
nge
the
Plot
Col
or
Less
on 3
Con
trol
ling
the
Use
r In
terf
ace
ni.c
om|
3-4
Impl
emen
tatio
n
Par
t 1—
Dis
able
Con
trol
s1.
Ope
n Temperature Limit.vi
from
the
Tem
pera
ture
Lim
it pr
ojec
t loc
ated
in th
e <Exercises>\LabVIEWCore 2\Temp Limit - Ctl Props
di
rect
ory.
Fig
ure
3-1
. Te
mpe
ratu
re L
imit
Fron
t Pan
el
2.R
un th
e V
I and
then
clic
k th
e St
art A
cqui
sitio
n bu
tton.
N
otic
e th
at w
hile
the
VI r
uns,
the
cont
rols
are
still
ena
bled
.You
can
cha
nge
the
valu
es o
n th
e co
ntro
ls w
hile
the
VI r
uns.
C
lick
the
Stop
but
ton.
LabV
IEW
Cor
e 2
Exe
rcis
es©
Nat
iona
l Ins
trum
ents
|3-
5
3.M
odify
the
bloc
k di
agra
m a
s sho
wn
in F
igur
e3-
2 to
dis
able
the
cont
rols
whe
n th
e V
I is r
unni
ng.
Fig
ure
3-2
. Te
mpe
ratu
re L
imit—
Dis
able
Con
trol
s B
lock
Dia
gram
1D
elta
t (m
s) P
rope
rty
Nod
e—R
ight
-clic
k th
e D
elta
t (m
s) c
ontr
ol a
nd s
elec
t Cre
ate»
Pro
per
ty N
od
e»D
isab
led
. Rig
ht c
lick
the
prop
erty
nod
e an
d se
lect
C
han
ge
All
toW
rite
.
2H
igh
Lim
it P
rope
rty
Nod
e—In
the
Tim
eout
Eve
nt C
ase,
rig
ht-c
lick
the
Hig
h Li
mit
cont
rol a
nd s
elec
t Cre
ate»
Pro
per
ty N
od
e»D
isab
led
.
P
lace
the
Pro
pert
y N
ode
outs
ide
the
Whi
le L
oop,
so
you
can
mov
e it
into
the
“Sta
rt”:
Val
ue C
hang
e ev
ent c
ase.
R
ight
-clic
k th
e pr
oper
ty n
ode
and
sele
ct C
han
ge
All
toW
rite
.
3T
empe
ratu
re P
rope
rty
Nod
e—In
the
Tim
eout
Eve
nt C
ase,
rig
ht-c
lick
the
Tem
pera
ture
indi
cato
r an
d se
lect
Cre
ate»
Pro
per
ty N
od
e»X
Sca
le»
Off
set
and
Mu
ltip
lier»
Mu
ltip
lier.
P
lace
the
Pro
pert
y N
ode
outs
ide
the
Whi
le L
oop,
so
you
can
mov
e it
into
the
“Sta
rt”:
Val
ue C
hang
e ev
ent c
ase.
R
ight
-clic
k th
e pr
oper
ty n
ode
and
sele
ct C
han
ge
All
toW
rite
.
M
ove
the
Hig
h Li
mit
prop
erty
nod
e in
to th
e “S
tart
”: V
alue
Cha
nge
even
t cas
e.
4T
o D
oubl
e P
reci
sion
Flo
at—
Con
vert
s th
e I3
2 in
put f
rom
the
Del
ta t
(ms)
con
trol
to a
dou
ble
prec
isio
n nu
mbe
r.
5R
ight
-clic
k th
e D
elta
t (m
s) p
rope
rty
node
and
sel
ect C
reat
e»C
on
stan
t an
d se
t it t
o D
isab
led
an
d G
raye
d O
ut.
1
4
32
5
Less
on 3
Con
trol
ling
the
Use
r In
terf
ace
ni.c
om|
3-6
Test
1.R
un th
e V
I and
clic
k th
e St
art A
cqui
sitio
n bu
tton.
The
Del
ta t
(ms)
and
Hig
h Li
mit
cont
rols
are
dis
able
d an
d gr
ayed
out
.
2.St
op th
e V
I.
3.R
un th
e V
I a se
cond
tim
e, c
lick
the
Star
t Acq
uisi
tion
butto
n an
d no
tice
that
the
cont
rols
are
still
dis
able
d.
LabV
IEW
Cor
e 2
Exe
rcis
es©
Nat
iona
l Ins
trum
ents
|3-
7
Par
t 2—
Ena
ble
Con
trol
sYo
u w
ant t
o di
sabl
e th
e co
ntro
ls w
hile
the
VI i
s run
ning
, how
ever
, you
wan
t to
enab
le th
em a
gain
the
next
tim
e yo
u ru
n th
e V
I. 1.
Mod
ify th
e bl
ock
diag
ram
as s
how
n in
Fig
ure
3-3
to e
nabl
e th
e co
ntro
ls e
ach
time
you
run
the
VI.
Fig
ure
3-3
. Te
mpe
ratu
re L
imit—
Ena
ble
Con
trol
s B
lock
Dia
gram
Test
1.R
un th
e V
I and
not
ice
that
the
cont
rols
are
ena
bled
aga
in b
efor
e yo
u cl
ick
the
Star
t Acq
uisi
tion
butto
n.
2.Se
t diff
eren
t val
ues f
or th
e co
ntro
ls a
nd c
lick
the
Star
t Acq
uisi
tion
butto
n. N
otic
e th
at th
e da
ta d
ispl
ayed
on
the
char
t sta
rts fr
om w
here
it st
oppe
d th
e la
st ti
me
you
ran
the
VI.
1C
reat
e co
pies
of t
he D
elta
t (m
s) a
nd H
igh
Lim
it pr
oper
ty n
odes
and
dra
g th
em to
the
left
of th
e W
hile
Loo
p.
2C
reat
e a
cons
tant
to e
nabl
e th
e co
ntro
ls.
21
Less
on 3
Con
trol
ling
the
Use
r In
terf
ace
ni.c
om|
3-8
Par
t 3—
Cle
ar C
hart
You
wan
t to
clea
r the
cha
rt ea
ch ti
me
you
run
the
VI.
1.M
odify
the
bloc
k di
agra
m a
s sho
wn
in F
igur
e3-
4 to
cle
ar o
ld d
ata
from
the
char
t eac
h tim
e yo
u ru
n th
e V
I.
Fig
ure
3-4
. Te
mpe
ratu
re L
imit—
Cle
ar C
hart
Blo
ck D
iagr
am
Test
1.R
un th
e V
I, cl
ick
the
Star
t Acq
uisi
tion
butto
n an
d le
t the
VI r
un fo
r a fe
w se
cond
s, th
en c
lick
the
Stop
but
ton.
2.R
un th
e V
I a se
cond
tim
e. N
otic
e th
at th
e ch
art c
lear
s bef
ore
you
clic
k th
e St
art A
cqui
sitio
n bu
tton
and
new
dat
a is
writ
ten
to it
.
Par
t 4—
Cha
lleng
e: C
hang
e th
e P
lot C
olor
Mod
ify th
e V
I so
that
the
Dat
a pl
ot c
hang
es c
olor
whe
n it
exce
eds t
he h
igh
limit.
End
of E
xerc
ise
3-1
1T
empe
ratu
re P
rope
rty
Nod
e—C
reat
e a
copy
of t
he T
empe
ratu
re P
rope
rty
node
and
dra
g it
to th
e le
ft of
the
Whi
le L
oop.
C
lick
the
new
pro
pert
y no
de a
nd s
elec
t His
tory
Dat
a.
2R
ight
-clic
k th
e H
isto
ry in
put a
nd s
elec
t Cre
ate»
Co
nst
ant.
Thi
s cr
eate
s a
clus
ter w
ith v
alue
s of
0 to
initi
aliz
e th
e te
mpe
ratu
re c
hart
to 0
whe
n th
e V
I sta
rts
runn
ing.
1
2
LabV
IEW
Cor
e 2
Exe
rcis
es©
Nat
iona
l Ins
trum
ents
|3-
9
Exe
rcis
e 3-
2C
usto
miz
ing
the
VI W
indo
w
Goa
lA
ffect
the
attri
bute
s of a
VI b
y us
ing
Prop
erty
Nod
es a
nd In
voke
Nod
es.
Sce
nario
You
can
set t
he a
ppea
ranc
e pr
oper
ties o
f a V
I sta
tical
ly b
y us
ing
the
VI p
rope
rties
pag
e. H
owev
er, r
obus
t use
r int
erfa
ces o
ften
mus
t mod
ify th
e ap
pear
ance
of a
fron
t pa
nel w
hile
the
prog
ram
runs
.
Mod
ify th
e Te
mpe
ratu
re L
imit
VI t
o ha
ve th
e fo
llow
ing
appe
aran
ce a
nd b
ehav
iors
whe
n th
e V
I is r
unni
ng:
•H
ide
the
tool
bar
•H
ide
the
men
u ba
r
•H
ide
the
scro
ll ba
rs
•M
ove
to th
e ce
nter
of t
he sc
reen
•W
rite
data
to a
n Ex
cel f
ile
Des
ign
Pro
pert
ies
Use
the
follo
win
g pr
oper
ties a
nd m
etho
ds o
n th
e V
I cla
ss:
•Sh
owM
enuB
ar—
Whe
n th
is p
rope
rty is
fals
e, th
e m
enu
bar o
f the
VI i
s not
dis
play
ed.
Fig
ure
3-5
. V
I Men
u B
ar
•T
ool B
ar V
isib
le—
Whe
n th
is p
rope
rty is
fals
e, th
e to
ol b
ar o
f the
VI i
s not
dis
play
ed.
Fig
ure
3-6
. V
I Too
l Bar
Less
on 3
Con
trol
ling
the
Use
r In
terf
ace
ni.c
om|
3-10
Met
hods
Unl
ike
prop
ertie
s, a
met
hod
has a
n ef
fect
eve
ry ti
me
you
call
it. T
here
fore
, you
shou
ld c
all m
etho
ds o
nly
whe
n yo
u w
ant t
o pe
rfor
m a
n ac
tion.
For
exa
mpl
e, if
you
ca
ll th
e Fp
.Cen
ter m
etho
d du
ring
each
iter
atio
n of
a lo
op, t
he V
I is c
ontin
ually
cen
tere
d, th
ereb
y pr
even
ting
the
user
from
mov
ing
it. Y
ou c
an u
se a
Cas
e st
ruct
ure
to
cont
rol c
allin
g th
e m
etho
d in
a g
iven
iter
atio
n of
a lo
op. U
se th
e fo
llow
ing
met
hod
on th
e V
I cla
ss:
•C
ente
r—Ea
ch ti
me
this
met
hod
is c
alle
d, th
e V
I mov
es to
the
cent
er o
f the
scre
en.
Tip
Use
the
Con
text
Hel
p w
indo
w to
vie
w d
escr
iptio
ns o
f eac
h pr
oper
ty a
nd m
etho
d.
Afte
r you
impl
emen
t the
cha
nges
to th
e V
I, w
hen
you
run
the
Tem
pera
ture
Lim
it V
I it s
houl
d m
ove
to th
e ce
nter
of t
he sc
reen
and
look
sim
ilar t
o Fi
gure
3-7.
Fig
ure
3-7
. Te
mpe
ratu
re L
imit
VI F
ront
Pan
el w
ith C
usto
miz
ed A
ppea
ranc
e
LabV
IEW
Cor
e 2
Exe
rcis
es©
Nat
iona
l Ins
trum
ents
|3-
11
Impl
emen
tatio
n
Par
t 1—
Set
App
eara
nce
Pro
pert
ies
1.O
pen
the
Tem
pera
ture
Lim
it V
I fro
m th
e Te
mpe
ratu
re L
imit
proj
ect l
ocat
ed in
the <Exercises>\LabVIEW Core 2\Temp Limit - Methods
dire
ctor
y.
2.M
odify
the
bloc
k di
agra
m a
s sho
wn
in F
igur
e3-
8 to
hid
e th
e sc
rollb
ars,
men
u ba
r, an
d to
ol b
ar, a
nd c
ente
r the
fron
t pan
el o
n th
e sc
reen
whi
le th
e V
I is r
unni
ng.
Less
on 3
Con
trol
ling
the
Use
r In
terf
ace
ni.c
om|
3-12
Fig
ure
3-8
. Te
mpe
ratu
re L
imit
VI—
Met
hods
Blo
ck D
iagr
am
No
teN
otic
e th
at th
e sc
rollb
ar v
isib
ility
pro
perti
es a
pply
to th
e Pa
ne c
lass
, not
the
VI c
lass
. The
fron
t pan
el c
an b
e sp
lit in
to m
ultip
le p
anes
usi
ng th
e ho
rizon
tal s
plitt
er b
ar o
r ver
tical
split
ter b
ar. E
ach
pane
can
hav
e its
ow
n sc
rollb
ars.
3.Sa
ve th
e V
I.
1P
rope
rty
Nod
e—R
ight
-clic
k th
e pr
oper
ty n
ode
and
sele
ct L
ink
to»P
ane»
Pan
e.
R
ight
-clic
k an
d se
lect
Ch
ang
e A
ll to
Wri
te.
E
xpan
d th
e no
de to
dis
play
two
prop
ertie
s an
d se
t the
m to
Ho
rizo
nta
l Scr
oll
Bar
Vis
ibili
ty a
nd V
erti
cal S
cro
llbar
Vis
ibili
ty.
2O
ff W
hile
Run
ning
con
stan
t—R
ight
-clic
k on
e of
the
inpu
ts to
the
Pan
e pr
oper
ty n
ode
and
sele
ct C
reat
e»C
on
stan
t.
3P
rope
rty
Nod
e—R
ight
-clic
k th
e pr
oper
ty n
ode
and
choo
se S
elec
t C
lass
»VI S
erve
r»V
I»V
I.
R
ight
-clic
k an
d se
lect
Ch
ang
e A
ll to
Wri
te.
E
xpan
d th
e no
de to
dis
play
two
prop
ertie
s.
C
lick
the
top
prop
erty
and
sel
ect F
ron
t P
anel
Win
do
w»S
ho
w M
enu
Bar
.
C
lick
the
low
er p
rope
rty
and
sele
ct T
oo
l Bar
»Vis
ible
.
W
hen
you
wire
a F
alse
con
stan
t to
each
of t
he p
rope
rtie
s, th
e m
enu
bar
and
tool
bar
will
be
hidd
en w
hen
the
VI r
uns.
4In
voke
Nod
e—C
lick
Met
hod
and
sele
ct F
ron
t P
anel
»Cen
ter.
You
mus
t wire
the
refe
renc
e fr
om th
e V
I pro
pert
y no
de b
efor
e se
tting
this
met
hod.
12
34
LabV
IEW
Cor
e 2
Exe
rcis
es©
Nat
iona
l Ins
trum
ents
|3-
13
Test
1.R
un th
e V
I.
2.V
erify
that
the
scro
ll ba
rs, t
ool b
ar, a
nd m
enu
bar a
re n
ot d
ispl
ayed
, and
that
the
fron
t pan
el w
indo
w is
cen
tere
d on
the
scre
en w
hile
the
VI r
uns.
3.St
op th
e V
I.
Less
on 3
Con
trol
ling
the
Use
r In
terf
ace
ni.c
om|
3-14
Par
t 2—
Exp
ort D
ata
Add
a m
etho
d to
exp
ort T
empe
ratu
re c
hart
data
to E
xcel
.
1.M
odify
the
bloc
k di
agra
m a
s sho
wn
in F
igur
e3-
9 to
exp
ort t
he d
ata
disp
laye
d on
the
Tem
pera
ture
cha
rt to
Exc
el.
Fig
ure
3-9
. Te
mpe
ratu
re L
imit
VI—
Exp
ort t
o E
xcel
Blo
ck D
iagr
am
2.Sa
ve th
e V
I.
Test
1.R
un th
e V
I.
2.C
lick
Stop
. The
Exp
ort D
ata
to E
xcel
met
hod
crea
tes a
tem
pora
ry E
xcel
file
with
the
data
from
the
Wav
efor
m c
hart.
Vie
w th
e da
ta in
the
Exce
l file
.
3.Sa
ve a
nd c
lose
the
VI.
End
of E
xerc
ise
3-2
1T
empe
ratu
re In
voke
Nod
e—R
ight
-clic
k th
e T
empe
ratu
re in
dica
tor
and
sele
ct C
reat
e»In
voke
No
de»
Exp
ort
Dat
a to
Exc
el.
1
LabV
IEW
Cor
e 2
Exe
rcis
es©
Nat
iona
l Ins
trum
ents
|3-
15
Exe
rcis
e 3-
3U
sing
Sub
VIs
Goa
lU
se c
ontro
l ref
eren
ces t
o cr
eate
subV
Is th
at m
odify
VI,
grap
h, o
r cha
rt pr
oper
ties.
Sce
nario
Cre
ate
subV
Is fo
r the
Tem
pera
ture
Lim
it V
I tha
t allo
w y
ou to
han
dle
som
e of
the
func
tiona
lity
that
you
ena
bled
in E
xerc
ise
3-1
and
Exer
cise
3-2.
Impl
emen
tatio
n1.
Ope
n th
e Te
mpe
ratu
re L
imit
VI f
rom
the
Tem
pera
ture
Lim
it Pr
ojec
t loc
ated
in th
e <Exercises>\LabVIEW Core 2\Temp Limit - SubVIs
dire
ctor
y.
2.Th
e bl
ock
diag
ram
, as s
how
n in
Fig
ure
3-10
incl
udes
cod
e to
:
•hi
de sc
roll
bars
whi
le ru
nnin
g
•se
t dia
log
prop
ertie
s
•re
enab
le th
e co
ntro
ls w
hen
you
stop
the
VI
Fig
ure
3-1
0. T
empe
ratu
re L
imit—
Sub
VIs
Sta
rt
Less
on 3
Con
trol
ling
the
Use
r In
terf
ace
ni.c
om|
3-16
In th
is ex
erci
se, y
ou m
odify
the b
lock
dia
gram
to u
se su
bVIs
and
use c
ontro
l ref
eren
ces.
Figu
re3-
11 d
escr
ibes
the s
ubV
Is y
ou cr
eate
and
use t
o m
ake t
he T
empe
ratu
re
Lim
it V
I mor
e m
odul
ar a
nd sc
alab
le.
Fig
ure
3-1
1. T
empe
ratu
re L
imit
VI—
Com
plet
e B
lock
Dia
gram
3.C
reat
e th
e Se
t Scr
oll B
ar S
tate
subV
I.
O
n th
e Te
mpe
ratu
re L
imit
bloc
k di
agra
m, h
ighl
ight
the
code
show
n in
Fig
ure
3-12
and
sele
ct E
dit»
Cre
ate
SubV
I.
Fig
ure
3-1
2. S
et S
crol
l Bar
Sta
te C
ode
to H
ighl
ight
1S
et S
crol
l Bar
Sta
te S
ubV
I—H
ides
the
scro
ll ba
rs w
hen
the
VI r
uns.
2S
et D
ialo
g P
rope
rtie
s S
ubV
I—H
ides
the
tool
bar
and
men
u ba
r w
hen
the
VI r
uns.
3S
et E
nabl
e S
tate
on
Mul
tiple
Con
trol
s V
I—S
ets
all t
he c
ontr
ols
in th
e in
put a
rray
to th
e E
nabl
e st
ate
valu
e.
12
3
LabV
IEW
Cor
e 2
Exe
rcis
es©
Nat
iona
l Ins
trum
ents
|3-
17
4.O
pen
the
subV
I.
D
oubl
e-cl
ick
the
subV
I ico
n on
the
bloc
k di
agra
m to
ope
n an
d m
odify
the
fron
t pan
el o
f the
subV
I you
just
cre
ated
as s
how
n in
Fig
ure
3-13
.
Fig
ure
3-1
3. S
et S
crol
l Bar
Sta
te S
ubV
I Fro
nt P
anel
1P
ane
Ref
Out
Indi
cato
r—C
reat
e a
copy
of t
he P
ane
Ref
In c
ontr
ol. R
ight
-clic
k th
e co
py a
nd s
elec
t Ch
ang
e to
Ind
icat
or
and
chan
ge th
e la
bel.
2A
ssig
n th
e P
ane
Ref
Out
indi
cato
r to
the
top
right
term
inal
of t
he c
onne
ctor
pan
e. C
onne
ctio
ns fo
r th
e ot
her
cont
rols
and
indi
cato
rs s
houl
d al
read
y be
cre
ated
.
1
2
Less
on 3
Con
trol
ling
the
Use
r In
terf
ace
ni.c
om|
3-18
5.M
odify
the
bloc
k di
agra
m o
f the
Set
Scr
oll B
ar S
tate
subV
I as s
how
n in
Fig
ure
3-14
.
Fig
ure
3-1
4. S
et S
crol
l Bar
Sta
te S
ubV
I Blo
ck D
iagr
am
6.W
ire th
e re
fere
nce
and
erro
r wire
s thr
ough
the
Erro
r cas
e.
7.C
reat
e a
mea
ning
ful i
con
for t
he su
bVI a
nd sa
ve it
as S
et Scroll Bar State.vi
in th
e <Exercises>\LabVIEW Core 2\Temp Limit - SubVI
di
rect
ory.
8.C
reat
e th
e Se
t Dia
log
Prop
ertie
s sub
VI.
9.O
n th
e Te
mpe
ratu
re L
imit
VI,
high
light
the
code
show
n in
Fig
ure
3-15
and
sele
ct E
dit»
Cre
ate
SubV
I.
Fig
ure
3-1
5. S
et D
ialo
g P
rope
rtie
s C
ode
to H
ighl
ight
LabV
IEW
Cor
e 2
Exe
rcis
es©
Nat
iona
l Ins
trum
ents
|3-
19
10.O
pen
the
subV
I you
just
cre
ated
and
mod
ify th
e fr
ont p
anel
as s
how
n in
Fig
ure
3-16
.
Fig
ure
3-1
6. S
et D
ialo
g P
rope
rtie
s S
ubV
I Fro
nt P
anel
1V
I Ref
Out
Indi
cato
r—C
reat
e a
copy
of t
he V
I Ref
Con
trol
. Rig
ht-c
lick
the
copy
and
sel
ect C
han
ge
to In
dic
ato
r an
d ch
ange
the
labe
l.
2A
ssig
n th
e V
I Ref
Out
indi
cato
r to
the
top
right
term
inal
of t
he c
onne
ctor
pan
e. C
onne
ctio
ns fo
r th
e ot
her
cont
rols
and
indi
cato
rs s
houl
d al
read
y be
cre
ated
.
1
2
Less
on 3
Con
trol
ling
the
Use
r In
terf
ace
ni.c
om|
3-20
Fig
ure
3-1
7. S
et D
ialo
g P
rope
rtie
s S
ubV
I Blo
ck D
iagr
am
11.W
ire th
e re
fere
nce
and
erro
r wire
s thr
ough
the
Erro
r cas
e.
12.C
reat
e a
mea
ning
ful i
con
for t
he su
bVI a
nd sa
ve it
as S
et Dialog Properties.vi
in th
e <Exercises>\LabVIEW Core 2\Temp Limit - SubVI
di
rect
ory.
13.A
dd th
e Se
t Ena
ble
Stat
e on
Mul
tiple
Con
trols
VI t
o th
e bl
ock
diag
ram
of t
he T
empe
ratu
re L
imit
VI.
Th
e Se
t Ena
ble
Stat
e on
Mul
tiple
Con
trols
VI i
s pro
vide
d fo
r you
in th
e Te
mpe
ratu
re L
imit
proj
ect.
D
rag
two
copi
es o
f the
VI f
rom
the
Proj
ect E
xplo
rer W
indo
w o
nto
the
Tem
pera
ture
Lim
it bl
ock
diag
ram
and
com
plet
e th
e bl
ock
diag
ram
as s
how
n in
Fi
gure
3-18
.
1N
ot fu
nctio
n—In
vert
the
logi
c fo
r th
e E
nabl
e D
ialo
g P
rope
rtie
s bu
tton
whe
n w
ired
to th
e pr
oper
ty n
ode
to s
how
the
men
u ba
r an
d to
ol b
ar
1
LabV
IEW
Cor
e 2
Exe
rcis
es©
Nat
iona
l Ins
trum
ents
|3-
21
Fig
ure
3-1
8. T
empe
ratu
re L
imit
Blo
ck D
iagr
am C
ompl
ete
Test
1.R
un th
e Te
mpe
ratu
re L
imit
VI a
nd v
erify
that
it b
ehav
es a
s exp
ecte
d.
2.Sa
ve a
nd c
lose
all
open
VIs
and
the
Tem
pera
ture
Lim
it pr
ojec
t.
End
of E
xerc
ise
3-3
1V
I Ser
ver
Ref
eren
ces—
Cre
ate
refe
renc
es fo
r th
e D
elta
t (m
s) c
ontr
ol, t
he H
igh
Lim
it co
ntro
l, an
d th
e S
tart
but
ton
cont
rol.
R
ight
-clic
k ea
ch o
f the
con
trol
s an
d se
lect
Cre
ate»
Ref
eren
ce.
T
he H
igh
Lim
it co
ntro
l is
in th
e T
imeo
ut e
vent
cas
e.
2B
uild
Arr
ay—
Exp
and
the
node
to a
ccep
t thr
ee in
puts
.
3S
et E
nabl
e S
tate
on
Mul
tiple
Con
trol
s su
bVI—
Cre
ate
a co
py o
f the
sub
VI a
nd th
e D
isab
led
Sta
te c
onst
ant a
nd p
lace
them
in th
e “S
tart
”: V
alue
Cha
nge
even
t ca
se.
2
1
3
LabV
IEW
Cor
e 2
Exe
rcis
es©
Nat
iona
l Ins
trum
ents
|
4-14
File
I/O
Tec
hniq
ues
Exe
rcis
esEx
erci
se 4
-1C
reat
e Fo
lder
and
File
Exer
cise
4-2
Writ
e M
ultip
le C
hann
els w
ith S
impl
e H
eade
rEx
erci
se 4
-3R
ead
TDM
S Fi
les
LabV
IEW
Cor
e 2
Exe
rcis
es©
Nat
iona
l Ins
trum
ents
|4-
3
Exe
rcis
e 4-
1C
reat
e F
olde
r an
d F
ile
Goa
lM
odify
a V
I to
prog
ram
atic
ally
cre
ate
a fo
lder
if n
one
exis
ts o
r to
repl
ace
it if
it al
read
y ex
ists
.
Impl
emen
tatio
n1.
Ope
n th
e Create folder and file.lvproj
loca
ted
in th
e <Exercises>\LabVIEW Core 2\Create folder and file
dire
ctor
y.
2.R
ight
-clic
k C
reat
e fol
der a
nd fi
le.lv
proj
in th
e Pro
ject
Exp
lore
r win
dow
and
sele
ct E
xplo
re. N
otic
e the
file
s in
the f
olde
r and
not
ice t
hat t
here
is n
o fo
lder
calle
d Logged Data
.
3.O
pen
Cre
ate
Dat
a Fi
le.v
i fro
m th
e Pr
ojec
t Exp
lore
r win
dow
.
Less
on 4
File
I/O
Tec
hniq
ues
ni.c
om|
4-4
4.Ex
amin
e th
e bl
ock
diag
ram
, as s
how
n in
Fig
ure
4-1. Fig
ure
4-1
. C
reat
e D
ata
File
VI B
lock
Dia
gram
—S
tart
1A
pplic
atio
n D
irect
ory—
Ret
urns
the
path
to th
e di
rect
ory
cont
aini
ng th
e ap
plic
atio
n. T
his
is u
sefu
l bec
ause
you
are
usi
ng a
sub
VI t
o cr
eate
the
data
file
.
2B
uild
Pat
h—A
dds
“Log
ged
Dat
a” to
the
file
path
nam
e.
3C
reat
e F
olde
r—If
the
Logg
ed D
ata
fold
er d
oes
not e
xist
, thi
s fu
nctio
n cr
eate
s it.
4B
uild
Pat
h—T
his
inst
ance
of t
he B
uild
Pat
h fu
nctio
n ap
pend
s th
e au
to g
ener
ated
file
nam
e Acquired Data <Date><Time>.txt
to th
e fil
e pa
th.
5O
pen/
Cre
ate/
Rep
lace
File
—R
epla
ces
or c
reat
es th
e fil
e.
6F
orm
at D
ate/
Tim
e S
trin
g—G
ener
ates
a p
re-f
orm
atte
d st
ring
cont
aini
ng th
e cu
rren
t dat
e an
d tim
e.
7F
orm
at In
to S
trin
g—C
onca
tena
ntes
the
strin
gs to
bui
ld th
e fil
e na
me.
67
12
34
5
LabV
IEW
Cor
e 2
Exe
rcis
es©
Nat
iona
l Ins
trum
ents
|4-
5
5.U
se th
e C
onte
xt H
elp
and
Det
aile
d H
elp
for t
he F
orm
at D
ate/
Tim
e St
ring
func
tion
to id
entif
y th
e m
eani
ng o
f the
tim
e-re
late
d fo
rmat
cod
es u
sed
in th
is V
I.
O
pen
the
Con
text
Hel
p if
it is
not
alre
ady
open
.
M
ove
the
curs
or o
ver t
he F
orm
at D
ate/
Tim
e St
ring
func
tion
and
then
clic
k th
e D
etai
led
Hel
p lin
k in
the
Con
text
Hel
p w
indo
w.
R
ead
the
Form
at D
ate/
Tim
e St
ring
Func
tion
help
topi
c to
lear
n th
e m
eani
ng o
f the
follo
win
g co
des:
•%
b
•%
d
•%
y
•%
H
•%
M
6.R
un th
e V
I to
test
the
func
tiona
lity.
Tu
rn o
n ex
ecut
ion
high
light
ing.
R
un th
e V
I onc
e an
d w
atch
the
flow
of d
ata
on th
e bl
ock
diag
ram
.
O
pen
the <Exercises>\LabVIEW Core 2\Create folder and file
dire
ctor
y an
d no
tice
that
a n
ew fo
lder
nam
ed L
ogge
d D
ata
was
cre
ated
and
co
ntai
ns a
n em
pty
file.
Che
ck th
at th
e fil
enam
e in
clud
es th
e da
te a
nd ti
me
form
atte
d co
mpo
nent
s cre
ated
usi
ng th
e co
des u
sed
in th
e V
I.
7.R
un th
e V
I a se
cond
tim
e.
N
otic
e th
at a
n er
ror o
ccur
s at t
he C
reat
e Fo
lder
func
tion.
O
pen
the f
ront
pan
el, r
ight
-clic
k th
e Err
or O
ut cl
uste
r and
sele
ct E
xpla
in E
rror
. The
erro
r cod
e 10
Dup
licat
e Pat
h is
retu
rned
bec
ause
the f
olde
r alre
ady
exis
ts.
8.M
odify
the
code
to c
heck
if th
e Lo
gged
Dat
a fo
lder
alre
ady
exis
ts a
s sho
wn
in F
igur
e4-
2.
9.O
nly
if th
e fo
lder
doe
s not
exi
st, c
reat
e it.
The
refo
re, y
ou e
nclo
se th
e C
reat
e Fo
lder
func
tion
in a
Cas
e st
ruct
ure.
You
use
the
outp
ut o
f the
Che
ck if
File
or F
olde
r Ex
ists
VI t
o co
nditi
onal
ly c
all t
he C
reat
e Fo
lder
func
tion.
10.M
odify
the
bloc
k di
agra
m to
con
ditio
nally
cre
ate
the
fold
er.
Less
on 4
File
I/O
Tec
hniq
ues
ni.c
om|
4-6
Fig
ure
4-2
. C
reat
e D
ata
File
VI B
lock
Dia
gram
—C
ompl
ete
11.S
ave
the
VI a
nd ru
n it
agai
n. N
otic
e th
at a
new
.txt
file
is c
reat
ed a
nd th
e V
I doe
sn't
retu
rn a
n er
ror.
End
of E
xerc
ise
4-1
1C
heck
if F
ile o
r F
olde
r E
xist
s V
I—C
heck
s to
see
if th
e fil
e or
fold
er e
xist
s an
d ou
tput
s th
is in
form
atio
n to
the
Cre
ate
Fol
der
func
tion.
2C
ase
Str
uctu
re—
Add
a C
ase
Str
uctu
re a
roun
d th
e C
reat
e F
olde
r fun
ctio
n an
d th
en c
lick
the
Cas
e st
ruct
ure
bord
er a
nd s
elec
t Mak
e th
is C
ase
Fal
se. T
he fo
lder
is
cre
ated
onl
y if
it do
es n
ot a
lread
y ex
ist.
W
ire th
e re
fere
nce
and
erro
r w
ires
thro
ugh
the
Tru
e C
ase.
12
LabV
IEW
Cor
e 2
Exe
rcis
es©
Nat
iona
l Ins
trum
ents
|4-
7
Exe
rcis
e 4-
2W
rite
Mul
tiple
Cha
nnel
s w
ith S
impl
e H
eade
r
Goa
lB
uild
coh
esiv
e, m
odul
ar, a
nd re
adab
le V
Is th
at a
llow
for a
pplic
atio
n sc
alab
ility
and
mai
ntai
nabi
lity.
LabV
IEW
arr
ays s
tore
cha
nnel
s in
row
s and
text
file
s typ
ical
ly st
ore
chan
nel d
ata
in c
olum
ns (f
or e
xam
ple,
Exc
el p
refe
rs d
ata
in c
olum
ns).
Use
Lab
VIE
W fu
nctio
ns to
eas
ily c
onve
rt nu
mer
ic a
rray
s int
o st
rings
.
Impl
emen
tatio
n1.
Ope
n th
e Write Multiple Channels with Simple Headers.lvproj
loca
ted
in th
e <Exercises>\LabVIEW Core 2\File IO -
MultiChannel with Header
dire
ctor
y.
2.O
pen
Wri
te M
ultip
le C
hann
els w
ith S
impl
e H
eade
r.vi
from
the
Proj
ect E
xplo
rer w
indo
w a
nd o
pen
the
bloc
k di
agra
m.
This
VI u
ses s
ever
al su
bVIs
in o
rder
to m
odul
ariz
e th
e co
de a
nd m
ake
it m
ore
read
able
. In
this
exe
rcis
e yo
u co
mpl
ete
the
Form
at F
ile P
rope
rty V
I and
the
Mul
tiCha
nnel
Writ
e V
I.
Fig
ure
4-3
. W
rite
Mul
tiple
Cha
nnel
s w
ith S
impl
e H
eade
r V
I Blo
ck D
iagr
am
1F
orm
at F
ile P
rope
rty
VI—
Fou
r in
stan
ces
of th
is V
I are
use
d to
add
Dat
e, T
ime,
Ope
rato
r N
ame,
and
UU
T S
eria
l Num
ber
to th
e fil
e he
ader
.
2C
reat
e D
ata
File
VI—
As
you
saw
in E
xerc
ise
4-1,
this
VI p
rogr
amm
atic
ally
cre
ates
and
sav
es a
file
.
3M
ultiC
hann
el W
rite
VI
1
23
Less
on 4
File
I/O
Tec
hniq
ues
ni.c
om|
4-8
3.Fr
om th
e bl
ock
diag
ram
of t
he W
rite
Mul
tiple
Cha
nnel
s with
Sim
ple
Hea
der V
I, do
uble
-clic
k th
e Fo
rmat
File
Pro
perty
subV
I and
mod
ify th
e bl
ock
diag
ram
as
show
n in
Fig
ure
4-4.
Fig
ure
4-4
. Fo
rmat
File
VI B
lock
Dia
gram
No
teW
hen
you
add
oper
atio
ns to
the
Cur
rent
form
at se
quen
ce in
the
Edit
Form
at S
ting
dial
og b
ox, L
abV
IEW
add
s a sp
ace
betw
een
each
one
by
defa
ult.
You
can
rem
ove
the
spac
es in
the
Cor
resp
ondi
ng fo
rmat
stri
ng se
ctio
n of
the
dial
og b
ox.
4.Sa
ve a
nd c
lose
the
Form
at F
ile P
rope
rty V
I.
1T
ab C
onst
ant
2E
nd o
f Lin
e C
onst
ant
3F
orm
at In
to S
trin
g—D
oubl
e-cl
ick
the
node
to o
pen
the
Edi
t Str
ing
For
mat
dia
log
box
and
sele
ct F
orm
at s
trin
g (
abc)
from
the
Sel
ecte
d o
per
atio
n (
exam
ple
) pu
ll-do
wn
men
u.
C
lick
the
Ad
d N
ew O
per
atio
n b
utto
n th
ree
times
to a
dd th
ree
mor
e F
orm
at s
trin
g op
erat
ions
to th
e C
urr
ent
form
at s
equ
ence
list
box.
C
lick
OK
to c
lose
the
dial
og b
ox.
N
otic
e th
at th
e F
orm
at In
to S
trin
g fu
nctio
n no
w h
as fo
ur in
puts
to c
orre
spon
d to
the
four
ope
ratio
ns y
ou a
dded
.
21
3
LabV
IEW
Cor
e 2
Exe
rcis
es©
Nat
iona
l Ins
trum
ents
|4-
9
5.Fr
om th
e bl
ock
diag
ram
of t
he W
rite
Mul
tiple
Cha
nnel
s with
Sim
ple
Hea
der V
I, do
uble
-clic
k th
e M
ultiC
hann
el W
rite
subV
I and
com
plet
e th
e N
o Er
ror c
ase,
as
show
n in
Fig
ure
4-5.
Fig
ure
4-5
. M
ultiC
hann
el W
rite
Sub
VI B
lock
Dia
gram
6.Sa
ve a
nd c
lose
the
Mul
tiCha
nnel
Writ
e V
I.
Test
1.R
un th
e W
rite
Mul
tiple
Cha
nnel
s with
Sim
ple
Hea
der V
I and
cre
ate
a da
ta fi
le.
This
VI u
ses t
he C
reat
e D
ata
File
VI t
hat y
ou u
sed
in E
xerc
ise
4-1
to p
rogr
amm
atic
ally
cre
ate
the
Logg
ed D
ata
dire
ctor
y an
d th
e da
ta fi
le in
the
sam
e di
rect
ory
cont
aini
ng th
e ap
plic
atio
n.
1T
rans
pose
2D
Arr
ay—
Bec
ause
Lab
VIE
W s
tore
s ar
ray
data
in r
ows
by d
efau
lt, th
is fu
nctio
n tr
ansp
oses
you
r ar
ray
to w
rite
the
data
into
col
umns
.
2A
rray
to S
prea
dshe
et S
trin
g—C
onve
rts
the
arra
y to
a ta
ble
in s
trin
g fo
rm.
3W
rite
to T
ext F
ile—
Writ
es a
str
ing
or a
n ar
ray
of s
trin
gs to
line
s in
a fi
le.
1
3
2
Less
on 4
File
I/O
Tec
hniq
ues
ni.c
om|
4-10
2.A
dd th
e Lo
gged
Dat
a di
rect
ory
to y
our p
roje
ct.
In
the
Writ
e M
ultip
le C
hann
els w
ith S
impl
e H
eade
r Lab
VIE
W P
roje
ct E
xplo
rer w
indo
w, r
ight
-clic
k M
y C
ompu
ter
and
sele
ct A
dd»F
olde
r (A
uto-
popu
latin
g).
N
avig
ate
to <Exercises>\LabVIEW Core 2\File IO - MultiChannel with Header\Logged Data
and
clic
k th
e Se
lect
Fol
der
butto
n.
O
pen
the Logged Data
dire
ctor
y fr
om th
e La
bVIE
W P
roje
ct E
xplo
rer w
indo
w a
nd n
otic
e th
at it
con
tain
s the
file
you
cre
ated
whe
n yo
u ra
n th
e Sa
ve
Mul
tiple
Cha
nnel
s with
Sim
ple
Hea
der V
I.
O
pen
and
exam
ine
the
gene
rate
d fil
e in
the
Logg
ed D
ata
dire
ctor
y.
3.R
ead
the
data
file
.
R
un th
e R
ead
Mul
tiple
Cha
nnel
s with
Sim
ple
Hea
der V
I.
N
avig
ate
to <Exercises>\LabVIEW Core 2\File IO - MultiChannel with Header\Logged Data
and
sele
ct th
e da
ta fi
le y
ou ju
st c
reat
ed.
4.Sa
ve a
nd c
lose
all
open
VIs
. Sav
e an
d cl
ose
the
Writ
e M
ultip
le C
hann
els w
ith S
impl
e H
eade
r pro
ject
.
LabV
IEW
Cor
e 2
Exe
rcis
es©
Nat
iona
l Ins
trum
ents
|4-
11
Cha
lleng
e 4-
2A
Goa
lC
reat
e a
VI t
hat t
akes
the
prop
erty
nam
e as
inpu
t and
retu
rns t
he a
ssoc
iate
d pr
oper
ty v
alue
.
Sce
nario
Supp
ose
your
file
hea
der i
nclu
des a
var
iabl
e nu
mbe
r of p
rope
rty n
ames
and
val
ues.
Afte
r rea
ding
in th
e fil
e, y
ou w
ant t
o pr
ogra
mm
atic
ally
acc
ess t
he p
rope
rty v
alue
fo
r a g
iven
pro
perty
. For
exa
mpl
e, in
this
exe
rcis
e, o
ne o
f the
pro
perti
es w
as “
UU
T Se
rial N
umbe
r”. Y
ou w
ant t
o pr
ogra
mm
atic
ally
sear
ch fo
r “U
UT
Seria
l Num
ber”
an
d th
en re
turn
the
seria
l num
ber v
alue
(e.g
., “A
1234
5”).
Des
crip
tion
Afte
r rea
ding
the
spre
adsh
eet s
tring
into
mem
ory,
use
a m
odul
ar a
ppro
ach
to c
reat
e a
VI w
hich
find
s the
row
inde
x of
a p
rope
rty n
ame.
The
n us
e th
e ro
w in
dex
to
retu
rn th
e pr
oper
ty v
alue
. If t
he p
rope
rty n
ame
isn'
t fou
nd, t
he V
I sho
uld
retu
rn a
des
crip
tive
erro
r.
Cha
lleng
e 4-
2B
Goa
lC
reat
e a
VI t
hat c
reat
es ta
b de
limite
d co
lum
n he
ader
s for
an
arbi
trary
num
ber o
f cha
nnel
s.
Sce
nario
The
Mul
tiCha
nnel
Writ
e V
I can
writ
e da
ta fo
r an
arbi
trary
num
ber o
f cha
nnel
s usi
ng a
two
dim
ensi
onal
arr
ay. Y
ou w
ant t
o cr
eate
a c
hann
el h
eade
r for
eac
h ch
anne
l of
dat
a. S
ince
the
num
ber o
f cha
nnel
s is a
rbitr
ary,
you
nee
d a
scal
able
app
roac
h w
hich
allo
ws f
or a
var
iabl
e nu
mbe
r of c
hann
el h
eade
rs. F
or e
xam
ple,
if y
ou h
ave
3ch
anne
ls o
f dat
a—te
mpe
ratu
re, p
ress
ure,
and
stra
in—
you
wan
t to
writ
e th
e da
ta to
file
with
the
follo
win
g he
ader
s Tem
pera
ture
, Pre
ssur
e, a
nd S
train
. For
the
file
to
be fo
rmat
ted
corr
ectly
, you
wan
t the
sam
e de
limite
rs to
be
used
in th
e he
ader
as i
s use
d fo
r the
cha
nnel
dat
a. F
or e
xam
ple,
if th
e ch
anne
l dat
a is
tab
delim
ited
with
ea
ch li
ne te
rmin
ated
with
an
end-
of-li
ne c
hara
cter
, you
wan
t you
r hea
der t
o be
form
atte
d th
e sa
me
way
.
Des
crip
tion
Cre
ate
a W
rite
Cha
nnel
with
Hea
ders
VI w
hich
you
cal
l prio
r to
your
Mul
tiCha
nnel
Writ
e V
I tha
t writ
es a
cha
nnel
hea
der f
or e
ach
chan
nel o
f dat
a. T
he V
I sho
uld
take
an
arra
y of
strin
gs a
s inp
ut. Y
our s
ubV
I sho
uld
writ
e th
e st
rings
to fi
le so
that
a ta
b se
para
tes e
ach
strin
g an
d th
e lin
e is
term
inat
ed b
y an
end
-of-
line
char
acte
r.
End
of E
xerc
ise
4-2
LabV
IEW
Cor
e 2
Exe
rcis
es©
Nat
iona
l Ins
trum
ents
|4-
13
Exe
rcis
e 4-
3R
ead
TD
MS
File
s
Goa
lLo
g da
ta to
a T
DM
S fil
e an
d re
ad th
e sa
me
TDM
S fil
e to
acc
ess i
nfor
mat
ion
abou
t a sp
ecifi
c ch
anne
l.
Sce
nario
You
are g
iven
a TD
MS
Logg
er V
I tha
t gen
erat
es m
easu
rem
ent d
ata f
or an
y nu
mbe
r of u
nits
und
er te
st (U
UTs
). Th
e UU
T m
easu
rem
ent d
ata c
onsi
sts o
f a ti
me d
omai
n w
avef
orm
and
the
pow
er sp
ectru
m o
f a w
avef
orm
.
Run
the
TDM
S Lo
gger
VI t
hat a
ccep
ts U
UTs
iden
tifie
d by
seria
l num
bers
. The
TD
MS
Logg
er V
I ret
rieve
s the
mea
sure
men
t dat
a fr
om th
e G
ener
ate
Dat
a V
I, an
d lo
gs th
e U
UT
data
and
add
ition
al p
rope
rties
to a
TD
MS
file.
The
TDM
S fil
e co
ntai
ns th
e au
thor
, tim
esta
mp,
and
two
chan
nel g
roup
s—Ti
me
Dat
a an
d Po
wer
Spe
ctru
m D
ata.
Eac
h gr
oup
cont
ains
a c
hann
el fo
r eac
h U
UT.
The
se
rial n
umbe
r of t
he U
UT
nam
es e
ach
chan
nel a
nd c
onta
ins t
he m
atch
ing
sign
al d
ata.
Savi
ng d
ata
to a
file
serv
es n
o pu
rpos
e un
less
you
als
o ca
n ac
cess
the
data
. Cre
ate
a re
ader
VI t
o ac
cess
dat
a fr
om th
e TD
MS
file
you
gene
rate
d. T
he re
ader
shou
ld
retu
rn e
ither
tim
e da
ta o
r pow
er sp
ectru
m d
ata
for a
par
ticul
ar U
UT
seria
l num
ber.
No
teO
ptio
nally
, if y
ou h
ave M
icro
soft
Exce
l ins
talle
d on
you
r sys
tem
you
can
use t
he T
DM
Exc
el A
dd-I
n to
ol to
load
the
TDM
S fil
e int
o M
icro
soft
Exce
l.
Des
ign
TD
MS
File
Ref
eren
ce In
form
atio
n
•Fi
le L
evel
Info
rmat
ion
–T
ime
Stam
p—co
ntai
ns th
e cu
rren
t tim
e.
–A
utho
r—co
ntai
ns th
e te
st o
pera
tor n
ame,
acq
uire
d th
roug
h a
fron
t pan
el c
ontro
l.
–Th
e fil
e co
ntai
ns tw
o ch
anne
l gro
ups,
one
for t
ime
data
and
one
for t
he p
ower
spec
trum
dat
a.
•C
hann
el G
roup
Lev
el In
form
atio
n
–N
ame—
cont
ains
Time Data
or P
ower Spectrum Data
. Thi
s ide
ntifi
es th
e ch
anne
l gro
up.
–Ea
ch c
hann
el g
roup
shou
ld c
onta
in a
cha
nnel
for e
ach
UU
T.
Less
on 4
File
I/O
Tec
hniq
ues
ni.c
om|
4-14
•C
hann
el L
evel
Info
rmat
ion
–N
ame—
cont
ains
the
UU
T Se
rial N
umbe
r, w
hich
ass
ocia
tes t
he n
umer
ic d
ata
with
a p
artic
ular
uni
t.
–Si
gnal
—co
ntai
ns a
n ar
ray
of fl
oatin
g-po
int n
umer
ic d
ata.
–Se
vera
l oth
er p
rope
rties
, suc
h as
the
sign
al m
inim
um a
nd m
axim
um w
ill a
utom
atic
ally
be
calc
ulat
ed a
nd a
dded
to th
e fil
e.
TD
MS
Rea
der
Inpu
ts a
nd O
utpu
ts
Your
VI s
houl
d be
gin
by o
peni
ng th
e TD
MS
file a
nd re
adin
g th
e aut
hor a
nd ti
me s
tam
p fil
e pro
perti
es. T
hen
read
the t
ime d
ata o
r pow
er sp
ectru
m d
ata f
or th
e spe
cifie
d U
UT
and
disp
lay
the
data
on
the
Cha
nnel
Dat
a w
avef
orm
gra
ph.
Tab
le 4
-1.
TD
MS
Rea
der
VI I
nput
s an
d O
utpu
ts
Typ
eN
ame
Pro
per
ties
Strin
g C
ontro
lSerial Number
—
Com
bo B
oxData Set
Item
1 =
“Ti
me
Dat
a”Ite
m 2
= “
Pow
er S
pect
rum
”
Wav
efor
m G
raph
Indi
cato
rChannel Data
—
Strin
g In
dica
tor
Test Operator
—
Tim
e St
amp
Indi
cato
rTime of Test
—
LabV
IEW
Cor
e 2
Exe
rcis
es©
Nat
iona
l Ins
trum
ents
|4-
15
Impl
emen
tatio
n
TD
MS
Log
ger
1.O
pen TDMS Logger.vi
from
the
TDM
S Lo
gger
and
Rea
der P
roje
ct lo
cate
d in
the <Exercises>\LabVIEW Core 2\TDMS Logger and Reader
dire
ctor
y. T
his V
I is p
re-b
uilt
for y
ou a
s sho
wn
in F
igur
e4-
6.
Fig
ure
4-6
. T
DM
S L
ogge
r Fr
ont P
anel
Less
on 4
File
I/O
Tec
hniq
ues
ni.c
om|
4-16
2.Te
st th
e TD
MS
Logg
er V
I.
En
ter y
our n
ame
in th
e T
est O
pera
tor
field
.
En
ter A
001
, A002
, and
A003
in th
e U
UT
Ser
ial N
umbe
rs c
ontro
l.
R
un th
e TD
MS
Logg
er V
I and
save
the
file
as test.tdms
in th
e <Exercises>\LabVIEW Core 2\TDMS Logger and Reader
dire
ctor
y.W
hen
you
save
the
TDM
S fil
e, th
e TD
MS
File
Vie
w w
indo
w o
pens
.
V
iew
the
logg
ed d
ata
in th
e TD
MS
File
Vie
wer
win
dow
.
Ex
pand
the
test
.tdm
s ite
m in
the
File
Con
tent
s pan
e of
the
win
dow
and
then
exp
and
the
Tim
e D
ata
and
Pow
er S
pect
rum
item
s and
vie
w th
e sa
mpl
e da
ta
for e
ach
of th
e U
UT
seria
l num
bers
you
ent
ered
.
C
lick
Qui
t to
clos
e th
e TD
MS
File
Vie
wer
win
dow
.
V
iew
the
fron
t pan
el o
f the
TD
MS
Logg
er V
I, w
hich
als
o di
spla
ys a
plo
t for
eac
h se
rial n
umbe
r you
ent
er.
Ex
amin
e th
e bl
ock
diag
ram
.
C
lose
the
TDM
S Lo
gger
VI.
Do
not s
ave
any
chan
ges.
LabV
IEW
Cor
e 2
Exe
rcis
es©
Nat
iona
l Ins
trum
ents
|4-
17
TD
MS
Rea
der
VI
1.O
pen
the
TDM
S R
eade
r VI f
rom
the
Proj
ect E
xplo
rer w
indo
w o
f the
TD
MS
Logg
er a
nd R
eade
r pro
ject
.
2.Th
e fr
ont p
anel
is sh
own
in F
igur
e4-
7.
Fig
ure
4-7
. T
DM
S R
eade
r Fr
ont P
anel
Less
on 4
File
I/O
Tec
hniq
ues
ni.c
om|
4-18
3.O
pen
and
exam
ine
the
bloc
k di
agra
m a
s sho
wn
in F
igur
e4-
8
Fig
ure
4-8
. T
DM
S R
eade
r B
lock
Dia
gram
1A
pplic
atio
n D
irect
ory
VI—
Ret
urns
the
path
to th
e di
rect
ory
cont
aini
ng th
e ap
plic
atio
n.
2F
ile D
ialo
g E
xpre
ss V
I—T
his
VI i
s co
nfig
ured
with
the
follo
win
g op
tions
:
Li
mit
sele
ctio
n to
sin
gle
item
F
ile—
The
use
r ca
n on
ly s
elec
t a fi
le
E
xist
ing—
The
use
r ca
n on
ly s
elec
t an
exis
ting
file
or fo
lder
3T
DM
S O
pen—
Ope
n a
.tdm
s fil
e fo
r re
adin
g or
writ
ing.
4O
pen
cons
tant
—R
ight
-clic
k th
e op
erat
ion
inpu
t of t
he T
DM
S O
pen
func
tion
and
sele
ct C
reat
e»C
on
stan
t.
5T
DM
S G
et P
rope
rtie
s—T
his
inst
ance
of t
he T
DM
S G
et P
rope
rtie
s fu
nctio
n re
ads
the
Aut
hor
file
prop
erty
.
6T
ime
Sta
mp
Con
stan
t—P
asse
s tim
e an
d da
te v
alue
to th
e bl
ock
diag
ram
.
7T
DM
S G
et P
rope
rtie
s—T
his
inst
ance
of t
he T
DM
S G
et P
rope
rtie
s fu
nctio
n re
ads
the
Tim
e S
tam
p fil
e pr
oper
ty.
8T
DM
S R
ead—
Rea
ds th
e tim
e da
ta o
r po
wer
spe
ctru
m d
ata
for
the
spec
ified
UU
T a
nd d
ispl
ays
the
data
on
the
Wav
efor
m G
raph
.
9T
DM
S C
lose
1
34
2
89
6
7
5
LabV
IEW
Cor
e 2
Exe
rcis
es©
Nat
iona
l Ins
trum
ents
|4-
19
Test
1.R
ead
and
disp
lay
the
time
dom
ain
data
.
O
n th
e V
I fro
nt p
anel
, ens
ure
that
the
Dat
a Se
t is s
et to
Tim
e D
ata.
En
ter A
001
in th
e Se
rial
Num
ber
cont
rol.
No
teA001
was
one
of t
he se
rial n
umbe
rs y
ou e
nter
ed w
hen
you
ran
the
TDM
S Lo
gger
VI.
R
un th
e V
I and
sele
ct th
e te
st.td
ms f
ile y
ou sa
ved
in <Exercises>\LabVIEW Core 2\TDMS Logger and Reader
. The
follo
win
g in
form
atio
n is
di
spla
yed
on th
e fr
ont p
anel
:
–W
avef
orm
Gra
ph—
sine
wav
e
–Te
st O
pera
tor—
your
nam
e
–Ti
me
of T
est—
time
stam
p fr
om w
hen
you
ran
the
TDM
S R
eade
r
C
hang
e th
e Se
rial N
umbe
r to A002
.
R
un th
e V
I. A
diff
eren
t sin
e w
ave
shou
ld d
ispl
ay.
2.R
ead
and
disp
lay
the
pow
er sp
ectru
m d
ata.
C
hang
e th
e D
ata
Set c
ontro
l to
Pow
er S
pect
rum
.
R
un th
e V
I and
sele
ct y
our T
DM
S fil
e. P
ower
spec
trum
dat
a sh
ould
dis
play
in th
e W
avef
orm
Gra
ph.
3.C
lose
the
VI.
Less
on 4
File
I/O
Tec
hniq
ues
ni.c
om|
4-20
TD
M E
xcel
Add
-In
(Opt
iona
l)
No
teTh
is e
xerc
ise
requ
ires M
icro
soft
Exce
l ver
sion
200
3 or
200
7 an
d th
e TD
M A
dd-in
Too
l ava
ilabl
e on
ni.com
.
1.La
unch
Mic
roso
ft Ex
cel.
2.C
lick
the
Add
-Ins
tab
and
sele
ct th
e T
DM
Impo
rter
: Im
port
a T
DM
(S) F
ile ic
on in
the
Cus
tom
Too
lbar
s sec
tion.
3.B
row
se to
find
the T
DM
S fil
e you
crea
ted
earli
er: <Exercises>\LabVIEW Core 2\TDMS Logger and Reader\test.tdms
. The
pro
perty
info
rmat
ion
is d
ispl
ayed
on
the
first
wor
kshe
et. T
he T
ime
data
and
Pow
er S
pect
rum
dat
a ar
e di
spla
yed
on se
para
te w
orks
heet
s.
4.Ex
it M
icro
soft
Exce
l and
retu
rn to
Lab
VIE
W.
End
of E
xerc
ise
4-3
LabV
IEW
Cor
e 2
Exe
rcis
es©
Nat
iona
l Ins
trum
ents
|
5-15
Impr
ovin
g an
Exi
stin
g V
I
Exe
rcis
e 5-
1C
once
pt: R
efac
torin
g In
herit
ed C
ode
This
exe
rcis
e co
nsis
ts o
f fiv
e V
Is th
at y
ou w
ill e
valu
ate
for w
ays t
o im
prov
e. L
ook
over
eac
h op
tion
and
choo
se o
ne o
r tw
o to
com
plet
e du
ring
the
time
allo
tted
in
clas
s. Th
e op
tions
for c
ode
to p
ract
ice
refa
ctor
ing
are
liste
d fr
om e
asie
st to
har
dest
.
Sele
ct fr
om th
e fo
llow
ing
optio
ns to
pra
ctic
e re
fact
orin
g La
bVIE
W c
ode:
•Su
bVIs
to F
or L
oops
•A
rray
Man
ipul
atio
n V
I
•Po
lling
to E
vent
s
•Fo
rmat
Into
Stri
ng
•St
ring
Form
attin
g
LabV
IEW
Cor
e 2
Exe
rcis
es©
Nat
iona
l Ins
trum
ents
|5-
3
Sub
VIs
to F
or L
oops
Goa
lTo
take
an
exis
ting
VI a
nd m
ake
it m
ore
read
able
, sca
labl
e an
d m
aint
aina
ble.
Des
crip
tion
In th
e co
urse
of t
he d
evel
opm
ent o
f a L
abV
IEW
app
licat
ion
ther
e ar
e tim
es w
hen
VIs
or s
ectio
ns o
f VIs
end
up
bein
g w
ritte
n “b
adly
”.
Sce
nario
Your
cus
tom
er is
a re
sear
ch fa
cilit
y th
at is
doi
ng e
xper
imen
ts o
n su
perc
ondu
ctin
g m
ater
ial.
The
rese
arch
ers m
ust p
erfo
rm e
xper
imen
ts a
t ver
y lo
w te
mpe
ratu
res.
The
mat
eria
ls a
re te
sted
in a
cha
mbe
r tha
t con
tain
s fou
r tem
pera
ture
sens
ors s
prea
d th
roug
hout
the
cham
ber.
The
sens
ors r
etur
n te
mpe
ratu
res i
n °C
. Due
to th
e lo
w
tem
pera
ture
s inv
olve
d, th
e tem
pera
ture
s in
°C ar
e les
s rea
dabl
e tha
n °K
. For
this
reas
on th
e cus
tom
er’s
appl
icat
ion
alre
ady
incl
udes
a V
I tha
t con
verts
the t
empe
ratu
res
from
°C to
°K.
The
cust
omer
has
rece
ntly
dec
ided
to m
onito
r mor
e th
an fo
ur te
mpe
ratu
res.
He
is w
orrie
d th
at e
very
tim
e he
incr
ease
s the
num
ber o
f tem
pera
ture
s he
wou
ld h
ave
to
upda
te th
e V
I tha
t doe
s the
con
vers
ion.
In th
is e
xerc
ise
you
will
refa
ctor
the
conv
ersi
on V
I to
mak
e it
mor
e sc
alab
le. Y
ou a
lso
will
mak
e th
e V
I mor
e re
adab
le a
nd
mai
ntai
nabl
e.
No
teTh
e K
elvi
n sc
ale
defin
es A
bsol
ute
Zero
as t
he lo
wes
t tem
pera
ture
pos
sibl
e. N
o te
mpe
ratu
re b
elow
Abs
olut
e Ze
ro is
allo
wed
. Abs
olut
e Ze
ro is
ap
prox
imat
ely
equa
l to
–273
°C. Y
ou sh
ould
bui
ld y
our r
efac
tore
d ap
plic
atio
n to
gen
erat
e err
ors i
f the
use
r trie
s to
conv
ert i
nval
id te
mpe
ratu
res,
for e
xam
ple,
te
mpe
ratu
res l
ess t
han
–273
°C.
Ope
n th
e C
onve
rt Te
mpe
ratu
res V
I loc
ated
in th
e <Exercises>\LabVIEW Core 2\Refactoring\Use subVIs_ForLoop
.
Hin
ts•
Find
repe
ated
cod
e an
d re
plac
e it
with
subV
Is.
•Fi
nd c
ode
that
wor
ks o
n a
limite
d nu
mbe
r of e
lem
ents
of a
n ar
ray
and
scal
e it
to w
ork
on a
n un
limite
d nu
mbe
r of e
lem
ents
.•
Cle
anup
a V
I to
mak
e it
read
able
.•
Org
aniz
e su
bVIs
and
rela
ted
files
in a
pro
ject
.
Test
Test
you
r ref
acto
red
code
to e
nsur
e th
at it
wor
ks a
s the
orig
inal
app
licat
ion
did.
Als
o en
sure
that
the
refa
ctor
ed a
pplic
atio
n ge
nera
tes e
rror
s if t
he u
ser t
ries t
o co
nver
t in
valid
tem
pera
ture
s.
Less
on 5
Impr
ovin
g an
Exi
stin
g V
Ini
.com
|5-
4
Arr
ay M
anip
ulat
ion
VI
Goa
lR
efac
tor a
VI t
hat u
ses a
n ou
tdat
ed te
chni
que
for c
ondi
tiona
lly se
para
ting
an a
rray
into
mul
tiple
arr
ays.
Des
crip
tion
Each
rele
ase
of L
abV
IEW
intro
duce
s new
feat
ures
that
impr
ove
codi
ng e
ffici
enci
es. T
here
fore
, you
mig
ht re
fact
or c
ode
you
inhe
rited
from
som
eone
who
dev
elop
ed
the
code
in a
n ea
rlier
ver
sion
of L
abV
IEW
.
Impl
emen
tatio
n1.
Ope
n Separate Array Values.vi
from
the
Arr
ay M
anip
ulat
ion
proj
ect l
ocat
ed in
the <Exercises>\LabVIEW Core 2\Refactoring\Array
Manipulation
dire
ctor
y.
2.Te
st th
e V
I.
Not
ice
that
the
inpu
t arr
ay c
onta
ins a
mix
of p
ositi
ve a
nd n
egat
ive
valu
es. A
fter r
unni
ng, t
he P
ositi
ve A
rray
con
tain
s pos
itive
val
ues w
hile
the
Neg
ativ
e A
rray
co
ntai
ns n
egat
ive
valu
es.
Hin
tsC
ondi
tiona
l aut
o-in
dexi
ng a
llow
s you
to c
ondi
tiona
lly b
uild
an
arra
y w
ithin
a F
or L
oop.
LabV
IEW
Cor
e 2
Exe
rcis
es©
Nat
iona
l Ins
trum
ents
|5-
5
Pol
ling
to E
vent
s
Goa
lTo
take
an
exis
ting
VI t
hat u
ses o
utda
ted
tech
niqu
es a
nd re
fact
or it
to b
e m
ore
read
able
, sca
labl
e an
d m
aint
aina
ble.
Des
crip
tion
A lo
t of e
xist
ing
LabV
IEW
cod
e w
as w
ritte
n us
ing
prac
tices
whi
ch w
ere
stan
dard
and
acc
epte
d in
the
past
but
whi
ch w
ere
disc
over
ed to
be
less
than
idea
l in
term
s of
read
abili
ty, s
cala
bilit
y an
d m
aint
aina
bilit
y.
Sce
nario
You
inhe
rit a
n ol
d La
bVIE
W a
pplic
atio
n w
hich
per
form
s the
follo
win
g fu
nctio
ns:
1.A
cqui
re a
wav
efor
m a
s a T
ime
Serie
s.
2.C
alcu
late
the
FFT
of th
e w
avef
orm
(tha
t is,
gene
rate
the
Spec
trum
).
3.C
alcu
late
the
Max
and
Min
val
ues o
f the
Wav
efor
m.
The
wav
efor
m a
nd sp
ectru
m a
re d
ispl
ayed
in se
para
te W
avef
orm
Gra
ph in
dica
tors
as a
re th
e M
ax a
nd M
in v
alue
s.
You
are
aske
d to
add
a fe
atur
e to
cal
cula
te th
e St
anda
rd D
evia
tion
of th
e Ti
me
Serie
s. Yo
u no
tice
that
the
Blo
ck D
iagr
am o
f the
VI i
s bui
lt in
such
a w
ay th
at a
ddin
g m
ore
feat
ures
mak
es it
gro
w.
Ope
n th
e W
avef
orm
Ana
lysi
s (Po
lling
) VI l
ocat
ed in
the <Exercises>\LabVIEW Core 2\Refactoring\Polling to Events
dire
ctor
y.
Hin
ts
•U
se E
vent
s ins
tead
of P
ollin
g.
•U
se S
hift
Reg
iste
rs in
stea
d of
Loc
al V
aria
bles
.
•U
se a
Pro
ject
to o
rgan
ize
the
files
.
Less
on 5
Impr
ovin
g an
Exi
stin
g V
Ini
.com
|5-
6
For
mat
Into
Str
ing
Goa
lR
efac
tor a
VI t
hat u
ses t
he F
orm
at In
to S
tring
func
tion
to m
ake
the
VI m
ore
scal
able
.
Des
crip
tion
The
Form
at In
to S
tring
func
tion
is v
ery
vers
atile
: it c
onve
rts m
ultip
le p
iece
s of d
ata
into
a st
ring
acco
rdin
g to
a fo
rmat
strin
g. H
owev
er, i
f new
par
amet
ers a
re
intro
duce
d, b
oth
the
Form
at In
to S
tring
func
tion
and
the
form
at st
ring
mus
t be
mod
ified
.
You
can
add
para
met
ers w
ithou
t cha
ngin
g th
e V
I if a
ll th
e pa
ram
eter
s are
of t
he sa
me
data
type
.
Impl
emen
tatio
n1.
Ope
n Format Gas Params.vi
from
the F
orm
at G
as P
aram
eter
s pro
ject
loca
ted
in th
e <Exercises>\LabVIEW Core 2\Refactoring\Format Into
String
dire
ctor
y.
A
ssum
e yo
u ne
ed to
add
a n
ew D
BL
para
met
er (f
or e
xam
ple,
Exp
losi
vene
ss).
N
otic
e th
at th
e Fo
rmat
Into
Stri
ng n
ode
need
s to
be e
xpan
ded.
A
lso
notic
e th
at th
e fo
rmat
strin
g ne
eds t
o ha
ve \r\nExplosiveness:\s%f
add
ed.
Hin
tsIf
an
addi
tiona
l par
amet
er n
eeds
to b
e ad
ded
to th
e R
esul
t stri
ng la
ter,
and
arra
y of
par
amet
er v
alue
s mak
es it
eas
y to
add
the
new
nam
e.
LabV
IEW
Cor
e 2
Exe
rcis
es©
Nat
iona
l Ins
trum
ents
|5-
7
Str
ing
For
mat
ting
Goa
lR
efac
tor a
VI t
hat u
ses t
he F
orm
at In
to S
tring
func
tion
to m
ake
it m
ore
scal
able
.
Des
crip
tion
The
Form
at In
to S
tring
func
tion
is v
ery
vers
atile
: it c
onve
rts m
ultip
le p
iece
s of d
ata
into
a st
ring
acco
rdin
g to
a fo
rmat
strin
g. H
owev
er, i
f new
par
amet
ers a
re
intro
duce
d, b
oth
the
Form
at In
to S
tring
and
the
form
at st
ring
mus
t be
mod
ified
.
Sce
nario
You
inhe
rited
som
e co
de th
at c
reat
es a
file
hea
der a
nd in
clud
es a
serie
s of n
ame-
valu
e pa
irs fo
r you
r tes
t dat
a. B
ecau
se th
e fil
e is
exp
ecte
d to
be
load
ed in
to E
xcel
, ea
ch n
ame
and
valu
e is
sepa
rate
d by
a ta
b an
d te
rmin
ated
with
an
End
of L
ine
char
acte
r. In
add
ition
to ti
me
and
date
info
rmat
ion,
the
file
head
er a
lso
incl
udes
in
form
atio
n co
ntai
ned
in a
clu
ster
. The
clu
ster
ele
men
t nam
es a
nd v
alue
s are
use
d in
the
nam
e-va
lue
pairs
.
Your
man
ager
wan
ts to
re-o
rder
the
nam
e-va
lue
pairs
so th
at D
ate
and
Tim
e ap
pear
firs
t. In
the
futu
re y
ou m
ay w
ant t
o ex
pand
the
num
ber o
f ele
men
ts in
the
File
H
eade
r Dat
a cl
uste
r fro
m 3
ele
men
ts to
10
elem
ents
. You
mus
t upd
ate
the
code
to c
hang
e th
e or
der a
nd p
repa
re fo
r fut
ure
scal
abili
ty o
f the
clu
ster
ele
men
ts.
Impl
emen
tatio
nO
pen
the
Gen
erat
e Fi
le H
eade
r VI i
n th
e Fo
rmat
File
Hea
der p
roje
ct lo
cate
d in
the <Exercises>\LabVIEW Core 2\Refactoring\String Formatting
di
rect
ory.
Hin
ts:
•C
reat
e a
subV
I whi
ch fo
rmat
s eac
h na
me-
valu
e pa
ir. S
epar
ate
the
nam
e an
d va
lue
usin
g a
Tab
cons
tant
and
term
inat
e w
ith th
e En
d of
Lin
e co
nsta
nt.
•Th
en p
roce
ss a
list
of n
ame-
valu
e pa
irs. T
he c
halle
nge
is to
cre
ate
two
para
llel a
rray
s, on
e fo
r nam
es a
nd o
ne fo
r val
ues.
•If
all
clus
ter e
lem
ents
are
of t
he sa
me
data
type
, you
can
con
vert
a cl
uste
r to
an a
rray
usi
ng th
e C
lust
er to
Arr
ay fu
nctio
n. Y
ou c
an th
en u
se a
For
Loo
p to
pro
cess
ea
ch c
lust
er e
lem
ent.
•U
se a
con
trol p
rope
rty n
ode
to g
et a
list
of c
ontro
l ref
eren
ces t
o al
l the
clu
ster
ele
men
ts. Y
ou c
an th
en g
et a
cces
s to
the
Labe
l nam
es o
f the
clu
ster
ele
men
ts. U
se
that
to b
uild
an
arra
y of
nam
es.
End
of E
xerc
ise
5-1
LabV
IEW
Cor
e 2
Exe
rcis
es©
Nat
iona
l Ins
trum
ents
|
6-16
Cre
atin
g an
d D
istr
ibut
ing
App
licat
ions
Exe
rcis
esEx
erci
se 6
-1A
Prep
arin
g Fi
les f
or D
istri
butio
nEx
erci
se 6
-1B
Cre
atin
g an
d D
ebug
ging
a S
tand
-Alo
ne A
pplic
atio
nEx
erci
se 6
-1C
Bui
ldin
g an
Inst
alle
r and
Deb
uggi
ng o
n a
Rem
ote
Mac
hine
LabV
IEW
Cor
e 2
Exe
rcis
es©
Nat
iona
l Ins
trum
ents
|6-
3
Exe
rcis
e 6-
1AP
repa
ring
File
s fo
r D
istr
ibut
ion
Goa
lR
evie
w th
e B
uild
ing
App
licat
ions
Che
cklis
t and
pre
pare
VIs
to b
uild
a st
and-
alon
e ap
plic
atio
n.
Sce
nario
Rev
iew
the
Bui
ldin
g A
pplic
atio
ns C
heck
list t
o as
sist
you
in th
e bu
ild p
roce
ss b
efor
e cr
eatin
g a
stan
d-al
one
appl
icat
ion
or in
stal
ler.
Stan
d-al
one
appl
icat
ions
in L
abV
IEW
hav
e th
e W
indo
w A
ppea
ranc
e se
t to
Top
-leve
l app
licat
ion
to e
nabl
e th
e fr
ont p
anel
to o
pen
whe
n th
e V
I run
s.
A V
I tha
t run
s as a
stan
d-al
one
exec
utab
le re
mai
ns in
mem
ory
whe
n th
e ap
plic
atio
n fin
ishe
s run
ning
. The
refo
re, i
t is n
eces
sary
to c
all t
he Q
uit L
abV
IEW
func
tion
to
clos
e th
e ap
plic
atio
n w
hen
the
appl
icat
ion
finis
hes e
xecu
ting.
Pla
cing
the
Qui
t Lab
VIE
W fu
nctio
n on
the
bloc
k di
agra
m c
an m
ake
editi
ng th
e ap
plic
atio
n m
ore
diffi
cult
in th
e fut
ure b
ecau
se L
abV
IEW
exits
each
tim
e the
appl
icat
ion
finis
hes.
By
usin
g a P
rope
rty N
ode w
ith th
e App
.Kin
d pr
oper
ty, y
ou ca
n sp
ecify
that
Lab
VIE
W
exits
onl
y w
hen
exec
uted
with
in th
e ru
n-tim
e sy
stem
.
Des
ign
•M
odify
the
VI P
rope
rties
to p
repa
re to
bui
ld a
stan
d-al
one
appl
icat
ion.
•M
odify
the
appl
icat
ion
to c
all t
he Q
uit L
abV
IEW
func
tion
whe
n th
e co
de is
exe
cute
d in
the
run-
time
syst
em.
•M
odify
the
appl
icat
ion
to sp
ecify
a lo
g pa
th re
lativ
e to
the
stan
d-al
one
exec
utab
le.
Impl
emen
tatio
nB
efor
e yo
u bu
ild a
n ap
plic
atio
n, y
ou fi
rst p
repa
re th
e co
de so
that
it e
xecu
tes r
elia
bly
whe
n co
mpi
led
into
an
appl
icat
ion.
Rev
iew
the
Bui
ldin
g A
pplic
atio
ns C
heck
list
1.Se
lect
Hel
p»L
abV
IEW
Hel
p to
ope
n th
e La
bVIE
W H
elp.
2.Se
lect
Fun
dam
enta
ls»B
uild
ing
and
Dis
trib
utin
g A
pplic
atio
ns»B
uild
ing
App
licat
ions
Che
cklis
t.
3.R
evie
w th
e Pr
epar
ing
File
s che
cklis
t ite
ms.
Set
Top
-Lev
el A
pplic
atio
n W
indo
w1.
Ope
n th
e H
isto
gram
Mai
n V
I.
If
you
hav
e ha
rdw
are
conn
ecte
d, o
pen Histogram.lvproj
in th
e <Exercises>\LabVIEW Core 2\Deployment\HW
dire
ctor
y.
Less
on 6
Cre
atin
g an
d D
istr
ibut
ing
App
licat
ions
ni.c
om|
6-4
If
you
do
not h
ave
hard
war
e co
nnec
ted,
ope
n Histogram.lvproj
in th
e <Exercises>\LabVIEW Core 2\Deployment\No HW
dire
ctor
y.
In
the
Proj
ect E
xplo
rer w
indo
w, d
oubl
e-cl
ick
His
togr
am M
ain.
vi to
ope
n th
e V
I.
2.Se
lect
File
»VI P
rope
rtie
s to
disp
lay
the
VI P
rope
rties
dia
log
box.
3.Se
lect
Win
dow
App
eara
nce
from
the
Cat
egor
y pu
ll-do
wn
men
u.
4.En
ter a
nam
e, su
ch a
s Histogram Application
, in
the
Win
dow
Titl
e te
xt b
ox.
5.Se
lect
Top
-leve
l app
licat
ion
win
dow
to g
ive
the
fron
t pan
el a
pro
fess
iona
l app
eara
nce
whe
n th
e V
I ope
ns a
s an
exec
utab
le.
6.C
lick
the
Cus
tom
ize
butto
n to
vie
w th
e va
rious
win
dow
setti
ngs t
hat L
abV
IEW
con
figur
es fo
r top
-leve
l app
licat
ion
win
dow
s.
7.C
lick
OK
to c
lose
the
Cus
tom
ize
Win
dow
App
eara
nce
dial
og b
ox a
nd c
lick
OK
to c
lose
the
VI P
rope
rtie
s dia
log
box.
8.Sa
ve th
e V
I.
Cal
l the
Qui
t Lab
VIE
W F
unct
ion
1.O
pen
and
mod
ify th
e bl
ock
diag
ram
to c
all t
he Q
uit L
abV
IEW
func
tion
whe
n th
e ap
plic
atio
n fin
ishe
s. Th
e Q
uit L
abV
IEW
func
tion
quits
Lab
VIE
W a
nd q
uits
th
e ap
plic
atio
n af
ter i
t has
exe
cute
d.
Fig
ure
6-1
. A
ddin
g th
e Q
uit L
abV
IEW
Fun
ctio
n to
the
Blo
ck D
iagr
am
2.In
the
Proj
ect E
xplo
rer w
indo
w, s
elec
t File
»Sav
e A
ll to
save
all
the
VIs
.
1P
rope
rty
Nod
e—S
elec
t Ap
plic
atio
n»K
ind
.
2C
ase
Str
uctu
re—
Wire
the
App
licat
ion:
Kin
d ou
tput
to th
e ca
se s
elec
tor
term
inal
and
then
rig
ht-c
lick
the
Cas
e st
ruct
ure
bord
er a
nd s
elec
t Add
Cas
e fo
r E
very
V
alue
.
3Q
uit L
abV
IEW
Fun
ctio
n—P
lace
this
func
tion
in th
e “R
un T
ime
Sys
tem
” ca
se. Y
ou c
an le
ave
the
othe
r ca
ses
empt
y or
del
ete
them
LabV
IEW
Cor
e 2
Exe
rcis
es©
Nat
iona
l Ins
trum
ents
|6-
5
Spe
cify
a F
ile P
ath
Rel
ativ
e to
the
Exe
cuta
ble
His
togr
am M
ain
VI a
lread
y co
ntai
ns c
ode
to sp
ecify
a re
lativ
e pa
th to
the
exec
utab
le a
pplic
atio
n.
Ope
n th
e C
reat
e D
ata
File
VI i
n th
e In
itial
ize
case
of t
he c
onsu
mer
loop
. The
App
licat
ion
Dire
ctor
y V
I cre
ates
a p
ath
rela
tive t
o th
e st
and-
alon
e ap
plic
atio
n w
hen
you
call
the
VI f
rom
a st
and-
alon
e ap
plic
atio
n. O
ther
wis
e, th
e A
pplic
atio
n D
irect
ory
VI r
etur
ns th
e pa
th to
the
fold
er c
onta
inin
g th
e pr
ojec
t file
.
Test
1.R
un th
e H
isto
gram
Mai
n V
I to
ensu
re th
at it
is w
orki
ng.
2.Sa
ve th
e V
I and
the
proj
ect.
End
of E
xerc
ise
6-1A
LabV
IEW
Cor
e 2
Exe
rcis
es©
Nat
iona
l Ins
trum
ents
|6-
7
Exe
rcis
e 6-
1BC
reat
ing
and
Deb
uggi
ng a
Sta
nd-A
lone
App
licat
ion
Goa
lC
reat
e a
build
spec
ifica
tion,
bui
ld a
stan
d-al
one
appl
icat
ion
(EX
E) in
Lab
VIE
W, a
nd d
ebug
the
appl
icat
ion
runn
ing
on th
e lo
cal c
ompu
ter.
Sce
nario
Cre
ate
a st
and-
alon
e ap
plic
atio
n to
run
the
His
togr
am M
ain
VI.
Afte
r you
pre
pare
you
r file
s, yo
u cr
eate
an
App
licat
ion
(.exe
) Bui
ld S
peci
ficat
ion,
and
run
the
appl
icat
ion.
You
then
use
Lab
VIE
W to
deb
ug th
e ru
nnin
g ap
plic
atio
n.
Des
ign
Use
the
App
licat
ion
(EX
E) B
uild
Spe
cific
atio
ns to
cre
ate
a st
and-
alon
e ap
plic
atio
n fo
r the
his
togr
am a
pplic
atio
n.
Con
nect
with
the
runn
ing
appl
icat
ion
by c
reat
ing
a de
bugg
ing
sess
ion
in L
abV
IEW
.
Impl
emen
tatio
nC
reat
ing
an A
pplic
atio
n (E
XE
) B
uild
Spe
cific
atio
n1.
Ope
n Histogram.lvproj
in th
e <Exercises>\LabVIEW Core 2\Deployment
dire
ctor
y.
2.R
ight
-clic
k B
uild
Spe
cific
atio
ns in
the
Proj
ect E
xplo
rer
win
dow
and
sele
ct N
ew»A
pplic
atio
n (E
XE
) fro
m th
e sh
ortc
ut m
enu.
3.(O
ptio
nal)
Plac
e a ch
eckm
ark
in th
e Do
not p
rom
pt a
gain
for t
his o
pera
tion
chec
kbox
and
clic
k th
e OK
but
ton
if yo
u re
ceiv
e a p
rom
pt ab
out S
SE2
optim
izat
ion.
4.M
odify
the
filen
ame
of th
e ta
rget
and
des
tinat
ion
dire
ctor
y fo
r the
app
licat
ion
in th
e In
form
atio
n ca
tego
ry.
Se
lect
the
Info
rmat
ion
cate
gory
.
C
hang
e th
e T
arge
t file
nam
e to
HistogramData.exe
.
En
ter <
Exercises>\LabVIEW Core 2\Deployment\Executable
in th
e D
estin
atio
n di
rect
ory
text
box
.
Tip
You
do n
ot n
eed
to c
reat
e th
e di
rect
ory.
Lab
VIE
W c
reat
es a
ny d
irect
orie
s tha
t you
spec
ify.
5.Sp
ecify
the
top-
leve
l VI f
or th
e ap
plic
atio
n.
Se
lect
the
Sour
ce F
iles c
ateg
ory.
Se
lect
the
His
togr
am M
ain.
vi in
the
Proj
ect F
iles t
ree.
Less
on 6
Cre
atin
g an
d D
istr
ibut
ing
App
licat
ions
ni.c
om|
6-8
C
lick
the
right
arr
ow n
ext t
o th
e St
artu
p V
Is li
stbo
x to
add
the
sele
cted
VI t
o th
e St
artu
p V
Is li
stbo
x.
6.In
clud
e co
de to
allo
w d
ebug
ging
of t
he e
xecu
tabl
e.
Se
lect
the
Adv
ance
d ca
tego
ry.
Pl
ace
a ch
eckm
ark
in th
e E
nabl
e de
bugg
ing
chec
kbox
.
C
lick
OK
.
7.In
the
Proj
ect E
xplo
rer
win
dow
, sel
ect F
ile»S
ave
All.
8.In
the
Proj
ect E
xplo
rer
win
dow
, rig
ht-c
lick
the
My
App
licat
ion
build
spec
ifica
tion
and
sele
ct B
uild
from
the
shor
tcut
men
u.
9.C
lick
Don
e in
the
Bui
ld st
atus
win
dow
.
Run
ning
the
App
licat
ion
Exe
cuta
ble
1.C
lose
the
His
togr
am P
roje
ct E
xplo
rer w
indo
w a
nd c
lose
Lab
VIE
W.
2.N
avig
ate
to <Exercises>\LabVIEW Core 2\Deployment\Executable
in W
indo
ws E
xplo
rer.
3.R
un HistogramData.exe
.
C
lick
the
Snap
shot
but
ton.
C
lick
the
Stop
but
ton
whe
n do
ne.
4.V
erify
that
the
appl
icat
ion
clos
ed w
hen
you
stop
ped
the
appl
icat
ion
and
the
appl
icat
ion
crea
ted
a te
xt fi
le in
the
Logg
ed D
ata
fold
er w
ithin
the
Exec
utab
le fo
lder
.
Deb
uggi
ng th
e E
xecu
tabl
e on
the
Sam
e C
ompu
ter
1.La
unch
Lab
VIE
W.
2.R
un HistogramData.exe
.
3.Se
lect
Ope
rate
»Deb
ug A
pplic
atio
n or
Sha
red
Lib
rary
from
the
LabV
IEW
men
u.
4.En
ter l
ocalhost
in th
e M
achi
ne n
ame
or IP
add
ress
text
box
.
LabV
IEW
Cor
e 2
Exe
rcis
es©
Nat
iona
l Ins
trum
ents
|6-
9
5.Se
lect
His
togr
amD
ata.
exe
from
the
App
licat
ion
or sh
ared
libr
ary
drop
-dow
n m
enu.
C
lick
the
Ref
resh
but
ton
if H
isto
gram
Dat
a.ex
e do
es n
ot a
ppea
r in
the
list.
6.C
lick
the
Con
nect
but
ton
to c
reat
e th
e de
bugg
ing
conn
ectio
n.
7.St
art d
ebug
ging
the
runn
ing
appl
icat
ion.
O
pen
the
bloc
k di
agra
m.
Tu
rn o
n Ex
ecut
ion
Hig
hlig
htin
g.
Tr
y us
ing
prob
es, b
reak
poin
ts, a
nd si
ngle
-ste
ppin
g.
8.St
op th
e ap
plic
atio
n by
clic
king
the
Stop
but
ton
in th
e de
bugg
ing
win
dow
.
End
of E
xerc
ise
6-1B
LabV
IEW
Cor
e 2
Exe
rcis
es©
Nat
iona
l Ins
trum
ents
|6-
11
Exe
rcis
e 6-
1CB
uild
ing
an In
stal
ler
and
Deb
uggi
ng o
n a
Rem
ote
Mac
hine
Goa
lC
reat
e an
inst
alle
r bui
ld sp
ecifi
catio
n an
d bu
ild th
e in
stal
ler.
As a
cha
lleng
e, re
mot
ely
debu
g th
e ap
plic
atio
n cr
eate
d by
the
inst
alle
r.
Sce
nario
Cre
atin
g an
inst
alle
r sim
plifi
es d
eplo
ying
an
appl
icat
ion
on m
ultip
le m
achi
nes.
Afte
r you
hav
e pr
epar
ed y
our f
iles,
you
crea
te a
n A
pplic
atio
n (.exe
) Bui
ld
Spec
ifica
tion
and
then
cre
ate
an In
stal
ler B
uild
Spe
cific
atio
n.
Des
ign
Use
an
Inst
alle
r Bui
ld S
peci
ficat
ion
to c
reat
e an
inst
alle
r for
the
App
licat
ion
(.exe
) Bui
ld S
peci
ficat
ion
you
crea
ted
in E
xerc
ise
6-1B
.
Impl
emen
tatio
n
Rev
iew
the
Bui
ldin
g A
pplic
atio
ns C
heck
list
1.O
pen
the
LabV
IEW
Hel
p by
sele
ctin
g H
elp»
Lab
VIE
W H
elp.
2.Se
lect
Fun
dam
enta
ls»B
uild
ing
and
Dis
trib
utin
g A
pplic
atio
ns»B
uild
ing
App
licat
ions
Che
cklis
t.
3.R
evie
w th
e C
onfig
urin
g B
uild
Spe
cific
atio
ns c
heck
list i
tem
s.
Cre
atin
g an
Inst
alle
r B
uild
Spe
cific
atio
n1.
Rig
ht-c
lick
Bui
ld S
peci
ficat
ions
in th
e Pr
ojec
t Exp
lore
r w
indo
w a
nd se
lect
New
»Ins
talle
r fr
om th
e sh
ortc
ut m
enu.
2.M
odify
the
inst
alle
r des
tinat
ion
in th
e Pr
oduc
t Inf
orm
atio
n ca
tego
ry.
Se
lect
the
Prod
uct I
nfor
mat
ion
cate
gory
.
Ty
pe <Exercises>\LabVIEW Core 2\Deployment\Installer
as t
he In
stal
ler d
estin
atio
n.
3.Sp
ecify
the
Exec
utab
le B
uild
Spe
cific
atio
n.
C
lick
the
Sour
ce F
iles c
ateg
ory.
Se
lect
the
My
App
licat
ion
build
spec
ifica
tion.
Less
on 6
Cre
atin
g an
d D
istr
ibut
ing
App
licat
ions
ni.c
om|
6-12
Se
lect
Pro
gram
File
s»H
isto
gram
in th
e D
estin
atio
n V
iew
tree
.
C
lick
the
right
arr
ow n
ext t
o th
e Pro
ject
File
s Vie
w tr
ee to
pla
ce th
e hi
stog
ram
exe
cuta
ble
and
all e
xecu
tabl
e su
ppor
t file
s und
er P
rogr
am F
iles»
His
togr
am
in th
e D
estin
atio
n V
iew
tree
, as s
how
n in
Fig
ure
6-2. Fig
ure
6-2
. In
stal
ler
Sou
rce
File
s C
ateg
ory
LabV
IEW
Cor
e 2
Exe
rcis
es©
Nat
iona
l Ins
trum
ents
|6-
13
4.A
dd th
e N
I Lab
VIE
W R
un-T
ime
Engi
ne to
the
inst
alle
r by
mod
ifyin
g th
e A
dditi
onal
Inst
alle
rs c
ateg
ory.
No
teIf
you
incl
ude
addi
tiona
l ins
talle
rs in
you
r bui
ld, m
ake
sure
the
prod
uct i
nsta
ller f
iles a
re a
vaila
ble.
Som
e in
stal
ler f
iles,
such
as t
he L
abV
IEW
R
un-T
ime
Engi
ne, a
re a
lread
y ca
ched
on
your
bui
ld sy
stem
. For
oth
er in
stal
ler f
iles,
such
as D
AQ
mx,
you
mig
ht n
eed
to in
sert
the
CD
or D
VD
that
con
tain
s th
e pr
oduc
t ins
talle
r file
s int
o a
CD
/DV
D d
rive.
If y
ou a
re c
ompl
etin
g th
is e
xerc
ise
in a
cla
ssro
om e
nviro
nmen
t, th
e D
AQ
mx
inst
alle
r is p
roba
bly
not a
vaila
ble.
The
refo
re, d
o no
t sel
ect t
he D
AQ
mx
driv
er.
How
ever
, if y
ou c
ompl
ete
this
exe
rcis
e ba
ck a
t you
r offi
ce, y
ou w
ill w
ant t
o in
clud
e th
e N
I-D
AQ
mx
Cor
e R
untim
e in
stal
ler i
n yo
ur b
uild
.
Se
lect
the
Add
ition
al In
stal
lers
cat
egor
y.
Se
lect
the
NI L
abV
IEW
Run
-Tim
e E
ngin
e 20
12 in
stal
ler.
C
lick
OK
.
5.In
the
Proj
ect E
xplo
rer
win
dow
, rig
ht-c
lick
the
My
Inst
alle
r bu
ild sp
ecifi
catio
n an
d se
lect
Bui
ld fr
om th
e sh
ortc
ut m
enu.
6.C
lick
Don
e w
hen
LabV
IEW
fini
shes
bui
ldin
g th
e in
stal
ler.
Test
1.R
un th
e setup.exe
file
in th
e <Exercises>\LabVIEW Core 2\Deployment\Installer\Volume
dire
ctor
y.
2.Fo
llow
the
inst
ruct
ions
on-
scre
en to
inst
all t
he a
pplic
atio
n. B
y de
faul
t, th
e ex
ecut
able
is c
reat
ed in
side
the <Program Files>\Histogram
dire
ctor
y.
3.R
un th
e ap
plic
atio
n by
sele
ctin
g St
art»
Prog
ram
s»H
isto
gram
»His
togr
amD
ata.
Cha
lleng
eIf
you
hav
e in
tern
et a
cces
s dur
ing
clas
s, try
to d
ebug
the
exec
utab
le o
n a
rem
ote
com
pute
r.
1.V
erify
that
cla
ssro
om h
as in
tern
et a
cces
s.
2.D
ecid
e w
heth
er to
deb
ug a
cla
ssm
ate’
s app
licat
ion
or in
stal
l you
r app
licat
ion
on y
our c
lass
mat
e’s c
ompu
ter.
Less
on 6
Cre
atin
g an
d D
istr
ibut
ing
App
licat
ions
ni.c
om|
6-14
3.If
you
dec
ide
to d
ebug
you
r ow
n ap
plic
atio
n on
a re
mot
e co
mpu
ter y
ou m
ust d
istin
guis
h yo
ur a
pplic
atio
n fr
om th
e ap
plic
atio
ns a
lread
y on
you
r cla
ssm
ate’
s co
mpu
ter.
In
the
inst
alle
r bui
ld sp
ecifi
catio
n, re
nam
e yo
ur a
pplic
atio
n w
ith a
uni
que
nam
e.
Tr
ansf
er y
our i
nsta
ller t
o th
e re
mot
e co
mpu
ter u
sing
a U
SB fl
ash
driv
e or
the
netw
ork.
In
stal
l you
r app
licat
ion.
4.To
use
Lab
VIE
W o
n yo
ur co
mpu
ter t
o de
bug
a run
ning
appl
icat
ion
on a
rem
ote c
ompu
ter,
you
mus
t det
erm
ine t
he IP
addr
ess o
f the
rem
ote c
ompu
ter,
also
kno
wn
as th
e D
estin
atio
n co
mpu
ter.
No
teC
onsi
der y
our c
ompu
ter t
o be
the
Dev
elop
men
t com
pute
r and
you
r cla
ssm
ate’
s com
pute
r to
be th
e D
estin
atio
n co
mpu
ter.
O
pen
the
Win
dow
s Sta
rt m
enu
on th
e D
estin
atio
n co
mpu
ter.
En
ter c
md
in th
e se
arch
box
and
pre
ss th
e <E
nter
> ke
y.
Ty
pe ipconfig
at t
he p
rom
pt in
the
Com
man
d w
indo
w a
nd p
ress
the
<Ent
er>
key.
N
ote
the
IP a
ddre
ss.
5.R
un th
e ap
plic
atio
n on
the
Des
tinat
ion
com
pute
r.
6.O
n th
e D
evel
opm
ent c
ompu
ter,
laun
ch L
abV
IEW
, if n
eces
sary
.
7.Se
lect
Ope
rate
»Deb
ug A
pplic
atio
n or
Sha
red
Lib
rary
from
the
LabV
IEW
men
u.
8.En
ter t
he IP
add
ress
of t
he D
estin
atio
n co
mpu
ter i
n th
e M
achi
ne n
ame
or IP
add
ress
text
box
.
9.Se
lect
the
exec
utab
le fr
om th
e A
pplic
atio
n or
shar
ed li
brar
y dr
op-d
own
men
u.
C
lick
the
Ref
resh
but
ton
if th
e ex
ecut
able
you
wan
t doe
s not
app
ear i
n th
e lis
t.
10.C
lick
the
Con
nect
but
ton
to c
reat
e th
e de
bugg
ing
conn
ectio
n.
LabV
IEW
Cor
e 2
Exe
rcis
es©
Nat
iona
l Ins
trum
ents
|6-
15
11.S
tart
debu
ggin
g th
e ru
nnin
g ap
plic
atio
n.
O
pen
the
bloc
k di
agra
m.
Tu
rn o
n Ex
ecut
ion
Hig
hlig
htin
g.
Tr
y us
ing
prob
es, b
reak
poin
ts, a
nd si
ngle
-ste
ppin
g.
12.S
top
the
appl
icat
ion
by c
licki
ng th
e St
op b
utto
n in
the
debu
ggin
g w
indo
w.
End
of E
xerc
ise
6-1C
LabV
IEW
Cor
e 2
Exe
rcis
es©
Nat
iona
l Ins
trum
ents
|A
-1AS
ettin
g U
p Yo
ur H
ardw
are
This
app
endi
x co
ntai
ns in
stru
ctio
ns o
n se
tting
up
your
har
dwar
e.
No
teC
ompl
ete
this
setu
p on
ly if
you
hav
e ha
rdw
are
inst
alle
d an
d ha
ve n
ot al
read
y co
mpl
eted
har
dwar
e set
up o
n yo
ur sy
stem
as p
art o
f a L
abVI
EW C
ore
1 co
urse
exe
rcis
e.
1.La
unch
MA
X b
y se
lect
ing
Star
t»Pr
ogra
ms»
Nat
iona
l Ins
trum
ents
»Mea
sure
men
t & A
utom
atio
n or
by
doub
le-c
licki
ng th
e MA
X ic
on o
n yo
ur d
eskt
op. M
AX
se
arch
es th
e co
mpu
ter f
or in
stal
led
Nat
iona
l Ins
trum
ents
har
dwar
e an
d di
spla
ys th
e in
form
atio
n.
2.C
reat
e a
cust
om sc
ale
for t
he te
mpe
ratu
re se
nsor
on
the
DA
Q S
igna
l Acc
esso
ry. T
he se
nsor
con
vers
ion
is li
near
and
use
s the
follo
win
g th
e fo
rmul
a Voltagex
100 = Celsius
.
App
endi
x A
Set
ting
Up
Your
Har
dwar
eni
.com
|A
-2
Fig
ure
A-1
. T
empe
ratu
re S
cale
R
ight
-clic
k th
e Sc
ales
sect
ion
and
sele
ct C
reat
e N
ew fr
om th
e sh
ortc
ut m
enu.
Se
lect
NI-
DA
Qm
x Sc
ale.
C
lick
Nex
t.
Se
lect
Lin
ear.
N
ame
the
scal
e Temperature
.
LabV
IEW
Cor
e 2
Exe
rcis
es©
Nat
iona
l Ins
trum
ents
|A
-3
C
lick
Fini
sh.
C
hang
e th
e Sc
alin
g Pa
ram
eter
Slo
pe to
100
.
U
nder
Uni
ts, e
nter
Celsius
in th
e Sc
aled
fiel
d.
C
lick
the
Save
but
ton
on th
e to
olba
r to
save
the
scal
e.
C
lose
MA
X b
y se
lect
ing
File
»Exi
t.
