Lab View Lecture 2

8/13/2019 Lab View Lecture 2

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LabVIEW Lecture 2

Programming with LabVIEW (contd.)


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First LabVIEW Program

Take a number from the user

Multiply it by 2

Add 246 Divide it by 2

Subtract the original number

Display the result (is it 123?)


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Types in LabVIEW

Each type is associated with a different color


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Representation

There are eight types of Integers

Four types of Float

Three types of ComplexFloats

Complex Numbers

Integers


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Representation

Floats and Complex Numbers are defined by

their precision.

Integers are defined by number of digits.

Floats

Complex Numbers

Integers

You will use

I32 (Long

Integer) in

someproblems.


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Manipulation

You can find all manipulation functions in

related palettes


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Loops, Cases, Sequences

There are several useful structures to control

the program flow


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the program flowYou might be familiar with For and

While loop


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the program flowInstead of IF structure, there is Case

structure.


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the program flow

One thing unique to LabVIEW is Flat

Squence


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For Loop

You feed an integer to N


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While Loop

You need to feed the loop condition as

boolean.


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Case Structure

Feed a condition that results in True or False.

Program two cases.


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Flat Sequence

If you want to order the execution you can use

flat sequence.


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Shift Register

You may need to carry result of one iteration

to the next. Use shift register.


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Shift Register


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Shift Register

You can also use shift register with while loop.


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Arrays

In LabVIEW, arrays are all containers.

Put an array container first.


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Array

Drop any kind of constant to make an array of

that tipe

Empty Array Container An Array of Strings


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Array

You can do the same thing in the front panel.

Find the Array container in Modern Palette

It becomes indicator or control depending onwhat you dropped


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You should invest some time to get used to

the LabVIEW structures.

Design you program in some language you

know, and port that code to LabVIEW.


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END OF LECTURE 2

Lab View Lecture 2

Documents

Transcript of Lab View Lecture 2