Dvp Ss Manual

7/29/2019 Dvp Ss Manual

1/458

DVP-PLC Application ManualProgram

Table of Contents

Chapter 1 Working Principles of PLC Ladder Diagram

Preface-The Background and Functions of PLC ...................................................... 1-1

1.1 The Working Principles of Ladder Diagram........................................................ 1-1

1.2 The Difference between Traditional Ladder Diagram and PLC Ladder Diagram... 1-2

1.3 Edition Explanation of Ladder Diagram ............................................................. 1-4

1.4 The Edition of PLC Ladder Diagram.................................................................. 1-8

1.5 The Conversion of PLC Command and Each Diagram Structure ........... ............ .. 1-11

1.6 The Simplification of Ladder Diagram ............................................................... 1-14

1.7 The Example for Designing Basic Program........................................................ 1-16

Chapter 2 DVP-PLC Function

2.1 Summary of DVP-PLC Device Number .............................................................. 2-1

2.2 Value, constant [K] / [H] ................................................................................... 2-7

2.3 The Numbering and Function of External Input/Output Contact [X] / [Y] .............. 2-9

2.4 The Numbering and Function of Auxiliary Relay [M] ........................................... 2-11

2.5 The Numbering and Function of Step Relay [S] ................................................. 2-12

2.6 The Numbering and Function of Timer [T] ......................................................... 2-13

2.7 The Numbering and Function of Counter [C]...................................................... 2-16

2.8 Register Number and Function [D], [E], [F]........................................................ 2-28

2.8.1 Data register [D] ........................................................................................ 2-28

2.8.2 Index Register [E], [F] ................................................................................ 2-29

2.8.3 File Register Function and Characteristics .................................................. 2-30

2.9 Nest Level Pointer[N], Pointer[P], Interrupt Pointer [I]........................................ 2-30

2.10 Special Auxiliary Relay and Special Register ................................................... 2-33

2.11 Special Auxiliary Relay and Special Register Functions....... ............ ............ ..... 2-53

2.12 Fault Code Information................................................................................... 2-83

Chapter 3 Basic Commands

3.1 Summary of Basic Command and Step Ladder Command .................................. 3-1

3.2 Basic Commands Explanations......................................................................... 3-3

Chapter 4 Step Ladder Commands4.1 Step Ladder Command [STL], [RET] ................................................................. 4-1


2/458

4.2 Sequential Function Chart (SFC) ...................................................................... 4-1

4.3 Step Ladder Command Explanation .................................................................. 4-2

4.4 Reminder of Design on the Step Ladder Program .............................................. 4-7

4.5 Categories of Procedures................................................................................. 4-8

4.6 IST command .................................................................................................. 4-18

Chapter 5 Application Commands

5.1 Summary of Parameters................................................................................... 5-1

5.2 Application Command Structure........................................................................ 5-6

5.3 Handling of Numeric Values ............................................................................. 5-11

5.4 Index register E, F ........................................................................................... 5-14

5.5 Index for Commands ........................................................................................ 5-16

Chapter 6 Application Commands API 00-49........................................... 6-1

Chapter 7 Application Commands API 50-99........................................... 7-1

Chapter 8 Application Commands API 100-149 ....................................... 8-1

Chapter 9 Application Commands API 150-199 ....................................... 9-1

Chapter 10 Application Commands API 215-246 ..................................... 10-1


3/458

1 Working Principles of PLC Ladder Diagram

DVP-PLC Application Manual 1-1

Preface----The Background and Functions of PLC

PLC (Programmable Logic Controller) is one of electronic equipments. It was called Sequence Controller

before. It was named Programmable Logic Controller (PLC) by NEMA (National Electrical Manufacture Association)

in 1978 and defined as electronic equipment. The operation of PLC is in the following:

Step 1. Read the external input signal, such as the status of keypad, sensor, switch and pulse.

Step 2. Using microprocessor to execute the calculations of logic, sequence, timer, counter and formula according to

the status and the value of the input signal read in the step 1 and pre-write programs saved inner to get the

corresponding output signal, such as open or close of relay, operation of controlled machine or procedure to control

automatic machine or procedure of manufacture. PLC also can be used to maintain and adjust of production program

by editing or modifying the peripheral equipments (personal computer/handheld programming panel). The common

program language of PLC is ladder diagram.

There are stronger functions in PLC with the development and application requirements of electronic technology,

such as position control, network and etc. Output/Input signals are DI (Digital Input), AI (Analog Input), PI (Pulse

Input), DO (Digital Output), AO (Analog Output) and PO (Pulse Output). Thus PLC plays an important role in the

feature industry.

1.1 The Working Principles of Ladder Diagram

Ladder diagram is an automatic control diagram language that developed during World War II. At first, it just has

basic components, such as A contact (normally open), B contact (normally close), output coil, timer counter and etc.

(The power panel is made up of these basic components) It has more functions, differential contact, latched coil and

the application commands, add, minus, multiply and divide calculation, that traditional power panel cant make since

PLC is developed.

The working principles of the traditional Ladder Diagram and the PLC Ladder Diagram are similar to each other;

the only difference is that the symbols for the traditional ladder diagram are expressed in the format that are close to

its original substance, while those for the PLC ladder diagram employ the symbols that are more explicit when being

used in computers or data sheets. In the Ladder Diagram Logics, it could be divided into the Combination Logics

and the Sequential Logics, and is described as follows:

1. Combination Logics:

The following example is the combination logics that show in traditional diagram and PLC ladder diagram

separately.

Traditional Ladder Diagram PLC Ladder Diagram

X4

X0

X2

X3

X1

Y0

Y2

Y1

X0Y0

X1Y1

Y2X2

X3

X4


4/458

1Working Principles of PLC Ladder Diagram

DVP-PLC Application Manual1-2

Example 1: Circuit 1 utilizes one X0 (NO: Normally Open) switch, which is normally known as the A switch or

contact, and its characteristic is that the contact is in the OFF condition at regular time (not pressed); the

output point Y0 is thus in OFF condition. However, once the switch motion (the button is pressed) is

conducted, the contact will be ON, and the output point Y0 will be in ON condition.

Example 2: Similarly, Circuit 2 utilizes the X1 (NC: Normally Close) switch, which is normally known as the B switch

or contact, and its characteristic is that the contact is in the ON condition at regular time; the output point

Y0 is thus in ON condition. While the switch motion is conducted (which is in the OFF condition), the

output point Y0 is in OFF condition.

Example 3: This is an example of combination logics output, which has more than one input equipment. The output

point Y2 will be in ON condition when X2 is in OFF condition or X3 and X4 are in ON condition.

2. Sequential logics:

The sequential logics are a type of circuit that possesses the Draw-Back structure, which is to draw back the

circuits output result and has it serve as the input condition. Thus, under the same input condition, different

output results will be generated in accordance with previous conditions and motions with different orders.

The following example is the sequential logics that show in traditional diagram and PLC ladder diagram

separately.

Traditional Ladder Diagram PLC Ladder Diagram

X5 X6 Y3

Y3

Y3X5

Y3

X6

When the above circuit is just supplied with power, although the X6 switch is ON, the X5 switch is still OFF, thus,

the output relay Y3 will be in OFF condition; output of the relay will only be ON after X5 is ON. Once the output relay

Y3 is in ON condition, there will be a feedback signal containing the ON condition from Y3 to connect in parallel with

the A contact of X5; this circuit is thus also known as the self-latched circuit. The circuit motion is showed in the

following chart:

Device status

StepX5 X6 Y3

1 N N OFF

2 Y N ON

3 N N ON4 N Y OFF

5 N N OFF

N: is in OFF condition Y: is in ON condition

From above chart, you can find that the same input may get different result. For example, in the step 1 and 3, the

status of X5 and X6 are in OFF condition but Y3 is in OFF condition in step 1 and in ON condition in step3. That is due

to the self-latched circuit feedback input. In this example, it explains with contact A, contact B and output coil. The

usage of other equipments is the same with this. Please refer to the chapter 3 for the detail.

1.2 The Difference between Traditional Ladder Diagram and PLC Ladder Diagram


5/458



Although the working principles are in accordance with each other for the traditional ladder diagram and the PLC

ladder diagram, PLC is indeed utilizing the microcomputer chip (MCU) to simulate the motion of the traditional ladder

diagram, which is to use the scan method to look over one by one the conditions of all input devices and output coils,

and afterwards, with the conditions in consideration, to calculate and generate the same output result as that of the

traditional ladder diagram based on the logics of the combination status of the ladder diagram. However, since that

there is only one MCU, the only way to examine the circuits is to look it over one after another within the ladder

diagram program, then calculate the output result in compliance with the program and the input/output status, and

finally, output the results to the external interface; thereafter, start over with the readout of the input status, the

calculation, output, and repeatedly go over the above-mentioned motions again; the time needed to complete the

whole set of cyclic motion is called one Scan Time. The scan time will become longer in accordance with the

increment of the program. With this scan time, it will incur repeated input detections, and thus, result in delay in the

output responses; and the longer the delay time, the greater the error towards the control, and whats worse, is that

the condition might be unqualified for the control requests. By then, PLC (with faster Scan Time) would be chosen to

do the job; the scan speed is thus an essential specification to PLC. Thanks to the advanced technique of ASIC (IC

with specific functions) within the microcomputer, PLC of the present has made greater progress in the scan speed,

and what follows is the scanning chart of the PLC Ladder Diagram Program.

Calculate the result by ladder

diagram algorithm (it doesnt sent

to the outer output point but the

inner equipment will output

immediately.)

Y0

X0 X1

Y0Start

M100 X3

Y1

X10

::

X100 M505

Y126

End

Send the result to the output point

Read input state from outside

Execute in cycles

In addition to the difference of scan time, PLC ladder diagram and traditional ladder diagram also has difference

in reverse current. In the following chart of traditional ladder diagram, if X0, X1, X4 and X6 are in ON condition and

the others are in OFF condition, output point Y0 will be in ON condition as shown as dotted line in the following

diagram. But in the PLC ladder diagram will have error in the peripheral equipmentWPLSoft due to scan method of

MCU is from up to down and from left to right.


6/458



Reverse current of traditional ladder diagram

X6

X0 X1 X2

X3 X4 X5a b

Y0

Reverse current of PLC ladder diagram

X6

X0

Y0

X1 X2 Y0

X3 X4 X5a b

There is a fault in the 3rd row of ladder diagram.

1.3 Edition Explanation of Ladder Diagram

Ladder diagram is a diagram language that applied on the automatic control and it is also a diagram that made

up of the symbols of electric control circuit. PLC procedures are finished after ladder diagram editor edits the ladder

diagram. It is easy to understand the control flow that indicated with diagram and also accept by technical staff of

electric control circuit. Many basic symbols and motions of ladder diagram are the same as mechanical and electrical

equipments of traditional automatic power panel, such as button, switch, relay, timer, counter and etc.

The kinds and amounts of PLC internal equipment will be different with brands. Although internal equipment has

the name of traditional electric control circuit, such as relay, coil and contact. It doesnt have the real components in it.

In PLC, it just has a basic unit of internal memory. If this bit is 1, it means the coil is ON and if this bit is 0, it means the

coil is OFF. You should read the corresponding value of that bit when using contact (Normally Open, NO or contact a).

Otherwise, you should read the opposite sate of corresponding value of that bit when using contact (Normally Close,

NC or contact b). Many relays will need many bits, 8-bits makes up a byte. 2 bytes can make up a word. 2 words

makes up double word. When using many relays to do calculation, such as add/ subtraction or shift, you could use

byte, word or double word. Furthermore, the two equipments, timer and counter, in PLC not only have coil but also

value of counting time and times.

In conclusion, each internal storage unit occupies fixed storage unit. When using these equipments, the

corresponding content will be read by bit, byte or word.

Basic introduction of the inner equipment of PLC: (Refer to Chapter 2 for detail)

Input relay

Input relay is the basic storage unit of internal memory that corresponds to external input

point (it is the terminal that used to connect to external input switch and receive external input

signal). Input signal from external will decide it to display 0 or 1. You couldnt change the state of

input relay by program design or forced ON/OFF via HPP. The contacts (contact a, b) can be

used unlimitedly. If there is no input signal, the corresponding input relay could be empty and

cant be used with other functions.

Equipment indication method: X0, X1,X7, X10, X11,. The symbol of equipment is X

and the number uses octal. There are numeric indications of input point on MPU and

expansion unit.


7/458



Output relay

Output relay is the basic storage unit of internal memory that corresponds to external output

point (it is used to connect to external load). It can be driven by input relay contact, the contact of

other internal equipment and itself contact. It uses a normally open contact to connect to external

load and other contacts can be used unlimitedly as input contacts. It doesnt have the

corresponding output relay, if need, it can be used as internal relay.

Equipment indication: Y0, Y1,Y7, Y10, Y11,. . The symbol of equipment is Y and the

number uses octal. There are numeric indications of output point on MPU and expansion

unit.

Internal relay The internal relay doesnt connect directly to outside. It is an auxiliary relay in PLC. Its

function is the same as the auxiliary relay in electric control circuit. Each auxiliary relay has the

corresponding basic unit. It can be driven by the contact of input relay, output relay or other

internal equipment. Its contacts can be used unlimitedly. Internal auxiliary relay cant output

directly, it should output with output point.

Equipment indication: M0, M1,, M4, M5. The symbol of equipment is M and the number

uses decimal number system.

STEP DVP PLC provides input method for controlling program of step actions. It is very easy to

write control program by using the conversion of control step S of command STL. If there is no

step program in the program, step point S could be used as internal relay M or alarm point.

Equipment indication: S0, S1,S1023. The symbol of equipment is S and the number

uses decimal.

Timer Timer is used to control time. There are coil, contact and timer storage. When coil is ON, its

contact will act (contact a is close, contact b is open) when attaining desired time. The time value

of timer is set by settings and each timer has its regular period. User sets the timer value and

each timer has its timing period. Once the coil is OFF, the contact wont act (contact a is open

and contact b is close) and the timer will be set to zero.

Equipment indication: T0, T1,,T255. The symbol of equipment is T and the number uses

decimal system. The different number range corresponds with the different timing period.

Counter Counter is used to count. It needs to set counter before using counter (i.e. the pulse of

counter). There are coil, contacts and storage unit of counter in counter. When coil is form OFF

to ON, that means input a pulse in counter and the counter should add 1. There are 16-bit, 32-bit

and high-speed counter for user to use.

Equipment indication: C0, C1,,C255. The symbol of equipment is C and the number

uses decimal.


8/458



Data register PLC needs to handle data and operation when controlling each order, timer value and

counter value. The data register is used to store data or parameters. It stores 16-bit binary

number, i.e. a word, in each register. It uses two continuous number of data register to store

double words.

Equipment indication: D0, D1,,D9,999. The symbol of equipment is D and the number

uses decimal.

File register The file register can be used to store data or parameter when the register that PLC needs is

not enough during handling data and parameter. It can store 16-bit binary number, i.e. a word, in

each file register. It uses two continuous number of file register to handle double word. There are

1600 file registers for EP series and 10000 file registers for EH series. There is not the real

equipment number for file register, thus it needs to execute READ/WRITE of file register via

commandsAPI147 MEMR,API148 MEMW or the peripheral equipment HPP and WPLSoft.

Equipment indication: K0~K9,999. There is no equipment symbol and uses decimal

number for number.

Index register Index register E and F are 16-bit data register just the same as general data register. It can

be wrote and read freely and has the function of index indication to use for character device, bit

device and constants.

Equipment indication: E0~E7, F0~F7. The symbols of equipment are E, F and the number

uses decimal.

The structure and explanation of ladder diagram:

Ladder DiagramStructure

Explanation Command Equipment

Normally open, contact a LD X, Y, M, S, T, C

Normally close, contact b LDI X, Y, M, S, T, C

Serial normally open AND X, Y, M, S, T, C

Parallel normally open OR X, Y, M, S, T, C

Parallel normally close ORI X, Y, M, S, T, C

Rising-edge trigger switch LDP X, Y, M, S, T, C

Falling-edge triggerswitch

LDF X, Y, M, S, T, C

Rising-edge trigger inserial

ANDP X, Y, M, S, T, C

Falling-edge trigger inserial

ANDF X, Y, M, S, T, C


9/458



Ladder DiagramStructure

Explanation Command Equipment

Rising-edge trigger inparallel

ORP X, Y, M, S, T, C

Falling-edge trigger in

parallelORF X, Y, M, S, T, C

Block in serial ANB none

Block in parallel ORB none

Multiple outputMPSMRDMPP

none

Output command of coildrive OUT Y, M, S

S

Step ladder STL S

Basic command,Application command

Applicationcommand

Please refer chapter 3 basic command andchapter 5 application command

Inverse logic INV none

Block: The block is the ladder diagram that made up of the serial or parallel calculation of two or above equipments. It

will get the result of parallel block or serial block according to operation character.

Serial block

Parallel block

Divergent line and combinative line: the vertical line is usually a separation for devices. This line is combination line

for the left device (it means that there are at least two columns or above circuit at

the left connect to this vertical line) this line is the divergent line for the right

device (it means that there are at least two rows or above circuit connect to this

line.

1 2

combinative line of block 1divergent line of block 2

combinative line of block 2


10/458



Network: this is the complete network that made up of devices and blocks. The vertical line or continuous line and the

block or device that line can connect to is the same network.

Independent network:Network1

Network2

Incomplete network:

1.4 The Edition of PLC Ladder Diagram

The program edited method is from left power line to right power line. (the right power line will be omitted during

the edited of DPLSoft and WPLSoft.) After editing a row, go to editing the next row. The maximum contacts in a row

are 11 contacts. If you need more than 11 contacts, you could have the new row and start with continuous line to

continue more input devices. The continuous number will be produced automatically and the same input point can be

used repeatedly. The drawing is shown as follows.

Y100000

00000

X0 X1 X2 X3 X4 X5 X6 X7 X10 C0 C1

X11 X12 X13

The operation of ladder diagram is to scan from left upper corner to right lower corner. The output handling,

including the operation frame of coil and application command, at the most right side in ladder diagram.

Take the following diagram for example; we analyze the process step by step. The number at the right corner is

the explanation order.

TMR T0 K10

Y1X0 X1 Y1 X4

M3T0M0

X3 M1

122

34

55

56

78


11/458



The explanation of command order:

1 LD X0

2 OR M03 AND X14 LD X3

AND M1

ORB5 LD Y1AND X4

6 LD T0AND M3ORB

7 ANB8 OUT Y1

TMR T0 K10

The detail explanation of basic structure of ladder diagram

1. LD (LDI) command: give the command LD or LDI in the start of a block.

LD command

AND Block

LD command

OR Block

The structures of command LDP and LDF are similar to the command LD. The difference is that command LDP

and LDF will act in the rising-edge or falling-edge when contact is ON as shown in the following.

X0

OFF ON OFF

Time

Rising-edge

X0

OFF ON OFF

Time

Falling-edge

2. AND (ANI) command: single device connects to a device or a block in series.

ANDcommand

ANDcommand

The structures of ANDP and ANDF are the same but the action is in rising-edge or falling-edge.

3. OR (ORI) command: single device connects to a device or a block.

ORcommand

ORcommand

ORcommand


12/458



The structures of ORP and ORF are the same but the action is in rising-edge or falling-edge.

4. ANB command: a block connects to a device or a block in series.

ANB command

5. ORB command: a block connects to a device or a block in parallel.

ORBcommand

If there are several blocks when operate ANB or ORB, they should be combined to blocks or network from up to

down or from left to right.

6. MPS, MRD, MPP commands: Divergent memory of multi-output. It can produce many various outputs.

The command MPS is the start of divergent point. The divergent point means the connection place between

horizontal line and vertical line. We should determine to have contact memory command or not according to the

contacts status in the same vertical line. Basically, each contact could have memory command but in some places of

ladder diagram conversion will be omitted due to the PLC operation convenience and capacity limit. MPS command

can be used for 8 continuous times and you can recognize this command by the symbol .

MRD command is used to read memory of divergent point. Because the logical status is the same in the same

horizontal line, it needs to read the status of original contact to keep on analyzing other ladder diagram. You canrecognize the command MRD by the symbol .

MPP command is used to read the start status of the top level and pop it out from stack. Because it is the last

item of the horizontal line, it means the status of this horizontal line is ending.


13/458



You can recognize this command by the symbol .

Basically, that is all right to use the above method to

analyze but sometimes compiler will omit the same

outputs as shown at the right.

MPS

MRD

MPPMPP

MPS

7. STL command: this command is used in the syntax design for the Sequential Function Chart (SFC). This

command helps the programmer to have clearer ideas on the program procedure, and thus the procedure will

be more readable. As shown in the following diagrams, we can get clear procedure, and original step point will

have the action of power loss after each step point S transfer to the next step point. In this way, we could

transfer to our procedure diagram from the left diagram to the PLC structure diagram below.

e

S0

S21

S22

M1002initialpulse

M1002

SET S0

SET S21SS0

SET S22S

S21

S

S22S0

RET

8. RET command: you should add RET command after finishing step ladder program and RET command should

add after STL command as shown in the following.

eS

S20

RET

eS

S20

RET

Refer to chapter 4 for the structure of step ladder [ STL ] , [ RET ].

1.5 The Conversion of PLC Command and Each Diagram Structure


14/458



Ladder Diagram

X0 X2 X1

X1

M1

C0

Y0

SET S0

M2 Y0

M0

X10Y10

SET S10

S0S

X11Y11

SET S11

S10S

SET S12

SET S13

X12Y12

SET S20

S11S

X13S0

RET

S20S

S12S

S13S

X0

CNT C0 K10

X1M0

C0

X1

M2

RST C0

M1

M2

END

LD X0

OR X1

LD

OR

X2

M0

ORI M1

ANB

LD

AND

M2

Y0

5

1ORblock

2 ORblock

Serialblock

3

AND

block

Serial block

4 ANI

ORB

ANI

OUT

AND

SET

STL

LD

X1

Y0

C0

S0

S0

X10

Multipleoutputs

Step ladder Start

State working item andstep point transfer

Output state will keep onhandling according toprogram scan state

7

8

8

9

10

12

13

11

14

Y10

S10

S10

OUT

SET

STL

LD X11OUT

SET

SET

SET

STL

LD

OUT

Y11

S11

S12

S13

S11

X12

Y12

S10 state take out

Take out X11 state

State working item andstep point transfer

S11 state take out

Take out X12 state

State working item andstep point transferSET

STL

STL

STL

LD

OUT

RET

S20

S20

S12

S13

X13

S0

15

LD S0

CNT

LD C0

C0K1017

18

Simultaneousdivergence

State working itemand step point transfer

End of step ladder

Return

Read C0

Multipleoutputs

MPS

AND X1

OUT M0

MRD

ANI X1

OUT M1MPP

ANI

OUT

END

M2

M2

Program End

Syntax Fuzzy Structure

The analytic process of correct ladder diagram should be from left to right or from up to down. But there are some

exceptions as shown in the following.

Example 1: there are two methods to use command to show the following ladder diagram but the result is the same.


15/458



Good method Bad method

LD X0 LD X0

OR X1 OR X1

LD X2 LD X2

OR X3 OR X3

ANB LD X4

LD X4 OR X5OR X5 ANB

X0 X2 X4

X5X3X1

ANB ANB

The results for the above two programs to convert to ladder diagram are the same. Why one is better than the

other? That is due to operation of MPU. The operation of the program in the left side is one block merges to another

one. Although the length of the program at the right side is the same as the left one, the operation of the program in

the right side is merged at the last. (command ANB is used to merge, it cant use more than 8 continuous times). In

this program, it just needs to use continuous two times of command ANB and MPU allows that. But when the program

needs to use more than continuous 8 times of command ANB, MPU wont allow. So the best method is to merge once

the block is established and in this way the logic of programmer will be in order.

Example 2: there are two methods to use command to show the following ladder diagram but the result is the same.

Good method Bad method

LD X0 LD X0

OR X1 LD X1

OR X2 LD X2

OR X3 LD X3

ORB

ORB

X0

X1

X2

X3

ORB

The difference is very clear in these two programs. In the bad method, the more program code it needs and the

operation memory of MPU also needs to increase. So that is better to decode in the order of the definition.

The error figures of ladder diagram

When editing ladder diagram, you can use all ladder symbols to make up all kinds of figures. When drawing

ladder diagram, you should start from left power line and end with the right power line (the right power line will be

omitted when using DPLSoft ladder diagram) due to the principle for PLC to handle figure program is from up to down

and from left to right (it is drew from left to right and draw the next new row after finishing drawing a row). They are the

common error figure in the following.

It cant do OR operation upward.


16/458



reverse flow power

There is reverse power flow during the circuit thatis from input to output signal.

The correct is output from right upper corner.

If you want to merge or edit, the order should befrom left upper corner to right lower corner. Theblock of dot line should move up.

It cant do parallel operation with empty device.

Empty device cant do operation with other device.

There is no device in the middle block.

.

The device in series should be arranged in parallelwith the block that it connects in series.

The position of Label P should be in the first row ofthe complete network.

The block that is connected in series should be

arranged in parallel with the upper horizontal line.

1.6 The Simplification of Ladder Diagram

To put the block in the front of ladder diagram can omit command ANB when series block and parallel block

connect in series.


17/458



Command

LD X0

LD X1

OR X2

X0 X1

X2

ANB

Command

LD X1

OR X2

X0X1

X2

AND X0

To put the block in the front of ladder diagram can omit command ORB when single equipment and block are

connected in parallel.

Command

LD T0

LD X1

AND X2

T0

X1 X2

ORB

Command

LD X1

AND X2T0

X1 X2

OR T0

In figure a of ladder diagram, it does not illegal due to the reverse power flow. In figure a, the upper block is

shorter than lower block, you could make it legal by switching them.

command

LD X0

OR X1

AND X2

LD X3

AND X4

X0

X1 X2

X3 X4

Fig. aORB

command

LD X3

AND X4

LD X1

OR X0

AND X2

X0

X1 X2

X3 X4

Fig. bORB


18/458



You can omit commands MPS, MPP when the multiple outputs in the same horizontal line dont need to operate

with other input device.

command

MPS

AND X0

OUT Y1MPP

X0

Y1

Y0

OUT Y0

command

OUT Y0

AND X0

Y0

Y1

X0

OUT Y1

Correct the circuit of reverse flow power

In the following examples, the figure at the left is the ladder diagram that is draw by our definition but there is

reverse flow power in it. Therefore, we correct it and show it at the right side.

Example 1:

X0

X3

X6

X1

X4

X7

X2

X5

X10 LOOP1

reverse flow power

X0 X1 X2

X3 X4 X5

X10

X6 X7 X5

X10 LOOP1

Example 2:

X0

X3

X6

X1

X4

X7

X2

X5

X10 LOOP1

reverse flow power

X0

X3

X6

X1

X4

X7

X2

X5

X10

reverse flow power

LOOP1

X0 X1 X2

X3 X4 X5

X6

X3 X7 X10

X6

X0 X1 X7 X10

LOOP2

X4

1.7 The Example for Designing Basic Program


19/458



Start, Stop and Latching

In the same occasions, it needs transient close button and transient open button to be start and stop switch.

Therefore, if you want to keep the action, you should design latching circuit. There are several latching circuits in the

following:

Example 1: the latching circuit for priority of stop

When start normally open contact X1=On, stop normally

contact X2Off, and Y1=On are set at the same time, if

X2=On, the coil Y1 will stop acting. Therefore, it calls priority of

stop.

X2

Y1

X1

Y1

Example 2: the latching circuit for priority of start

When start normally open contact X1=On, stop normallycontact X2Off and Y1=On (coil Y1 will be active and

latching) are valid at the same time, if X2=On, coil Y1 will be

active due to latched contact. Therefore, it calls priority of start.

X2

Y1

X1

Y1

Example 3: the latching circuit of SET and RST commands

SET Y1

RST Y1

X1

X2

Top priori ty of stop

The figure at the right side is latching circuit that made up

of RST and SET command.

It is top priority of stop when RST command is set behind

SET command. When executing PLC from up to down, The

coil Y1 is ON and coil Y1 will be OFF when X1 and X2 act at

the same time, therefore it calls priority of stop.

It is top priority of start when SET command is set after

RST command. When X1 and X2 act at the same time, Y1 is

ON so it calls top priority of start. SET

Y1RST

Y1

X2

X1

Top priority of start

Example 4: latched

Auxiliary relay M512 is latched at the right side. (refer to

PLC user manual) the circuit at the right side will be latched

when power is on and it will be also latched once the power

loss and power on again. Therefore the latched is continuous.

X2

M512

X1

SET

RST M512

Y1

M512

The common control circuit


20/458



Example 5: condition control

X3

Y1

X1

Y1

X4Y2

X2

Y2

Y1

X1

X3

X2

X4

Y1

Y2

X1 and X3 can start/stop Y1 separately, X2 and X4 can start/stop Y2 separately and they are all self latched

circuit. Y1 is an element for Y2 to do AND function due to the normally open contact connects to Y2 in series.

Therefore, Y1 is the input of Y2 and Y2 is also the input of Y1.

Example 6: Interlock control

X3

Y1

X1

Y1

X4

Y2

X2

Y2

Y1

Y2

X1

X3

X2

X4

Y1

Y2

The figure above is the circuit of interlock control. Y1 and Y2 will act according to the start contact X1 and X2.

Y1 and Y2 will act not at the same time, once one of them acts and the other wont act. (This is called interlock.)

Even if X1 and X2 are valid at the same time, Y1 and Y2 wont act at the same time due to up-to-down scan of

ladder diagram. For this ladder diagram, Y1 has higher priority than Y2.

Example 7: Sequential Control

X3

Y1

X1

Y1

X4

Y2

X2

Y2

Y1

Y2

If add normally close contact Y2 into Y1 circuit to be

an input for Y1 to do AND function. (as shown in the left

side) Y1 is an input of Y2 and Y2 can stop Y1 after

acting. In this way, Y1 and Y2 can execute in sequential.

Example 8: Oscillating Circuit

The period of oscillating circuit is T+T


21/458



Y1

Y1

Y1

T T

The figure above is a very simple ladder step diagram. When starting to scan Y1 normally close contact, Y1

normally close contact is close due to the coil Y1 is OFF. Then it will scan Y1 and the coil Y1 will be ON and output 1.

In the next scan period to scan normally close contact Y1, Y1 normally close contact will be open due to Y1 is ON.

Finally, coil Y1 will be OFF and output 0. Scan repeatedly, the period of oscillating circuit is nT+T.

T0

X0

TMR

Y1

Y1

T0

Kn

Y1

T Tn

X0

The figure above uses timer T0 to control coil Y1 to be ON. After Y1 is ON, timer T0 will be closed at the next

scan period and output Y1. The oscillating circuit will be shown as above. (n is the setting of timer and it is decimal

number. T is the base of timer. (clock period))

Example 9: Blinking Circuit

T2TMR Kn2

T1

X0

TMR

Y1

T2

T1

Kn1

X0 T1

Y1

Tn1

X0

Tn2

The figure above is common used oscillating circuit for indication light blinks or buzzer alarms. It uses two

timers to control On/OFF time of Y1 coil. If figure, n1 and n2 are timer setting of T1 and T2. T is the base of timer

(clock period)

Example 10: Triggered Circuit

Y1

M0

X0

Y1

Y1

M0

M0

X0

M0

Y1

T


22/458



In figure above, the rising-edge differential command of X0 will make coil M0 to have a single pulse of T (a

scan time). Y1 will be ON during this scan time. In the next scan time, coil M0 will be OFF and normally close M0

and normally close Y1 are all closed. However, coil Y1 will keep on being ON and it will make coil Y1 to be OFF once

a rising-edge comes after input X0 and coil M0 is ON for a scan time. The timing chart is as shown above. This

circuit usually executes alternate two actions with an input. From above timing: when input X0 is a square wave of a

period T, output coil Y1 is square wave of a period 2T.

Example 11: Delay Circuit

T10

X0

TMR

Y1

T10

K1000

TB = 0.1 sec

X0

Y1

100 seconds

When input X0 is ON, output coil Y1 will be ON at the same time due to the corresponding normally close

contact OFF makes timer T10 to be OFF. Output coil Y1 will be OFF after delay 100 seconds once input X0 is OFF

and T10 is ON. Please refer to timing chart above.

Example 12: Output delay circuit, in the following example, the circuit is made up of two timers. No matter input X0 is

ON or OFF, output Y4 will be delay.

T5

T5

TMR

Y4

T6

X0

K50

Y4

T6

Y4

TMR

X0

K30

X0

T5

Y0

T6

5seconds

3seconds

Example13: Extend Timer Circuit

T12TMR Kn2

T11

X0

TMR

Y1

T11

Kn1

T12

In this circuit, the total delay time from input X0 is

close and output Y1 is ON= (n1+n2)* T. where T is

clock period.

Example 14: The method of enlarge counter range


23/458



C6CNT Kn2

C5

X13

CNT

RST

C5

Kn1

X14C5RST

Y1

C6

C6

The range of 16-bit counter is 0~32,767. If using

two counters as figure in left side, the counter range

can be enlarge to n1*n2. When counter C5 attains n1,

counter C6 will counts one time and reset itself. Then

counter C6 will count the pulse of X13. When counter

C6 attains n2, the pulse of X13 will be n1*n2.

Example 15: Traffic light control (by using step ladder command)

VerticalLight

HorizontalLight

Traffic light control

Red lightYellowlight

Greenlight

Greenblink light

Verticallight

Y0 Y1 Y2 Y2

Horizontallight

Y10 Y11 Y12 Y12

Light Time 35 Sec 5 Sec 25 Sec 5 Sec

Timing chart:

25 Sec

5 Sec 5 Sec

5 Sec 5 Sec

25 Sec

Y0

Y1

Y2

Y10

Y11

Y12

VerticalLight

Red

Yellow

Green

HorizontalLight

Red

Yellow

Green


24/458


25/458



Drawing by SFC Editor (WPLSoft )

Drawing by SFC Internal Ladder Diagram View

LAD-0

S0ZRST S127

M1002

S0SET

Transferred condition 1

TRANS*

T0

S22

Y2

T2TMR K50

M1013


TRANS*

T13

TRANS*

T13

TRANS*

T13

TRANS*

T13

TRANS*

T13

TRANS*

T13

TRANS*

T13

0

2

3

4

5

6

7

1

LAD-0

S0

S20

S21

S22

S23

S30

S31

S32

S33

S0


TRANS*T12

TRANS*T12

TRANS*T12

TRANS*T12

TRANS*T12

TRANS*T12

TRANS*T12


26/458

2 DVP-PLC Function


2.1 Summary of DVP-PLC Device Number

ES, EX, SS Models:

Type Device Item Usage Range Function

X External input relayX0~X177, 128 points, octalnumber system

Correspond toexternal input point

Y External output relay

Y0~Y177, 128 points, octal

number system

Total is256

points

Correspond to

external output point

For generalM0~M511, M768~M999,744 points

For latched * M512~M767, 256 pointsM Auxiliary

For specialM1000~M1279, 280 points(some are latched)

Total is1280points

Contacts can switch toOn/Off in program(some is latched)

100ms timer T0~T63, 64 points

10ms counterT64~T126, 63 points (whenM1028=On, it is 10ms,M1028=Off, it is 100ms)

T Timer

1ms timer T127, 1 points

Total is128

points

When the timerindicated by TMRcommand attains thesetting, the T contactwith the same numberwill be ON.

16-bit count up for general C0~C111, 112 points

16-bit count up for latched * C112~C127, 16 points

Total is128

points

1-phase inputC235~C238, C241, C242,C244, 7 points

1-phase 2 inputs C246, C247, C249, 3 points

C Counter32-bit countup/downhigh-speedcounter forlatched*

2-phase 2 inputs C251, C252, C254, 3 points

Total is13

points

When the counterindicated by CNT(DCNT) commandattains the setting, theC contact with thesame number will beON.

Initial step point latched * S0~S9, 10 points

Zero point return latched *S10~S19, 10 points (usewith IST command)

Re

laybitmode

SSteppoint

latched * S20~S127, 108 points

Total is128

points

Usage device of stepladder diagram (SFC)

T Present value of timer T0~T127, 128 pointsWhen timer attains,the contact of timerwill be ON.

C Present value of counterC0~C127, 16-bit counter, 128C235~C254, 32-bit counter, 13 points

When timer attains,the contact of timerwill be ON.

For general D0~D407, 408 points

For latched * D408~D599, 192 points

Total is600 points

For special

D1000~D1311, 312 points(for V4.9 and above)D1000~D1143, 144 points(for V4.8 and below)

RegisterWORDdata

DDataregister

For index indication E(=D1028), F(=D1029), 2points

Total is312 points

(144

points)

It can be memoryarea for storing data.E and F can be usedas the specialpurpose of index

indication

N For master control nested loop N0~N7, 8 pointsControl point ofmaster control nestedloop

P For CJ, CALL commands P0~P63, 64 pointsLocation pointer ofCJ, CALL

Time interruptI6, 1 point (10~99ms)

(for Version 5.7)

External interrupt I001, I101, I201, I301, 4 points

Pointer

I Interrupt

Communication interrupt I150

Location pointer ofinterrupt subroutine

K DecimalK-32,768 ~ K32,767 (16-bit operation)

K-2,147,483,648 ~ K2,147,483,647 (32-bit operation)

Consta

nt

H HexadecimalH0000 ~ HFFFF (16-bit operation)H00000000 ~ HFFFFFFFF (32-bit operation)

* latched area is fixed, it cant be changed.


27/458

2 DVP-PLC Function


EP/SA models:

Type Device Item Range Function

X External input relayX0~X177, 128 points, octal number

system

Correspond to

external input point

Y External output relayY0~Y177, 128 points, octal number

system

Total

is

256points

Correspond to

external output point

For general M0~M511, 512 points (*1)

For latched *M512~M999, 488 points (*3)

M2000~M4095, 2096 points (*3)MAuxiliary

Relay

For specialM1000~M1999, 1000 points (some

are latched)

Total

is

4096

points

Contacts can be

switched during

ON/OFF in the

program (some is

latched)

100ms

T0~T199, 200 points (*1)

T192~T199 for subroutine

T250~T255, 6 points (accumulative

type) (*4)

10ms

T200~T239, 40 points (*1)

T240~T245, 6 points (accumulative

type) (*4)

T Timer

1msT246~T249, 4 points (accumulative

type) (*4)

Total

is

256

points

When the timer that

TMR command

indicates attains the

setting, the T contact

with the same

number will be On.

C0~C95, 96 points (*1)16-bit count upC96~C199, 104 points (*3)

C200~C215, 16 points (*1)32-bit count up/down

C216~C234, 19 points (*3)

C235~C244, 1-phase 1 input, 9

points (*3)

C246, C247, C249, 1-phase 2

inputs, 3 points (*3)

C Counter

32-bit high-speed

counter

C251, C252, C254, 2-phase 2

inputs, 3 points (*3)

Total

is

250

points

When the timer that

CNT(DCNT)

command indicates

attains, the contact C

with the same

number will be On.

Initial step point S0~S9, 10 points (*1)

Zero point returnS10~S19, 10 points (use with IST

command) (*1)

For general S20~S512, 492 points (*1)

For latched * S512~S895, 384 points (*3)

R

elaybitmode

SStep

point

For alarm S896~S1023, 128 points (*3)

Total

is

1024

points

Usage device of step

ladder diagram


28/458

2 DVP-PLC Function



T Present value of timer T0~T255, 256 points

When timer attains,

the contact will be

On.

CPresent value of counter C0~C199, 16-bit counter, 200 points

C200~C254, 16-bit counter, 50 points

When timer attains,

the contact will be On.

For general D0~D199, 200 points (*1)

For latched*

D200~D999, 800 points (*3)

D2000~D4999, 3000 points

(*3)

For special D1000~D1999, 1000 points

D Data

register

For index indication E0~E3, F0~F3, 8 points (*1)

Total is

5000 points

It is the memory area

for storing data. E and

F can be used as

special purpose of

index indication

RegisterWORDdata

None File register * K0~K1599 (1600 points) (*4) It is extension register

for storing data

N Master control nested N0~N7, 8 pointsThe control point of

master control nested

P For CJ, CALL commands P0~P255, 256 pointsThe location point of

CJ, CALL

External interruptI001, I101, I201, I301, I401, I501, total is 6

points

Time interrupt I6, I7, 2 points (1~99ms,time base=0.1ms)

High-speed counter

reaches interruptI010, I020, I030, I040, I050, I060, 6 points

Pointer

IFor

interrupt

Communication interrupt I150

The location point of

interrupt subroutine.

K Decimal number systemK-32,768 ~ K32,767 (16-bit operation)

K-2,147,483,648 ~ K2,147,483,647 (32-bit operation)

Constant

H Hexadecimal number systemH0000 ~ HFFFF (16-bit operation)

H00000000 ~ HFFFFFFFF (32-bit operation)

*1: non-latched area is fixed, it cant be changed.

*2: non-latched area can be changed to latched area by parameter setting.

*3: latched area can be changed to non-latched area by parameter setting.

*4: latched area is fixed, it cant be modified. (the area marked withcant be changed)


29/458

2 DVP-PLC Function


Latched setting for each EP/SA model:

For general For latched Special auxiliary relay Latched

M0~M511 M512~M999 M1000~M1999 M2000~M4095

Factory setting islatched

Factory setting is latchedM

Auxiliary relayIt is fixed to be

non-latched Start: D1200(K512)End: D1201(K999)

Some are latched and

cant be changed Start: D1202(K2000)End: D1203(K4095)

100 ms 10 ms 10ms 1 ms 100 ms

T0 ~T199 T200~T239 T240~T245 T246~T249 T250~T255T

TimerIt is fixed to be

non-latchedIt is fixed to be

non-latchedAccumulative type

It is fixed to be latched

16 bits count up 32 bits count up/down32 bits count up/down high

speed counter

C0~C95 C96~C199 C200~C215 C216~C234 C235~C255

It is fixed to belatched It is fixed to belatched Factory setting is latchedCCounter

It is fixed to benon-latched

Start: D1208K96

End: D1209K199

It is fixed tobe

non-latched

Start: D1210K216

End: D1211K234

Start: D1212K235

End: D1213K255

Forgeneral

LatchedSpecialregister

Latched For general

S0~S9 S10~S19 S20~S511 S512~S895 S896~S1023

Factory setting is latchedS

Step relay

It is fixed to be non-latched Start: D1214K512

End: D1215K895


For general Latched Special register LatchedD0~D199 D200~D999 D1000~D1999 D2000~D9999

Factory setting islatched

Factory setting is latchedDRegister It is fixed to be

non-latched Start: D1216 (K200)End: D1217 (K999)

Some are latched andcant be changed Start: D1218 (K2000)

End: D1219 (K4999)

K0~K1599Data Register


EH model:


X External input relay X0~X377, 256 points, octal number systemCorresponds toexternal input point

Y External output relay Y0~Y377, 256 points, octal number system

Totalis

512points

Corresponds toexternal output point

For general M0~M499, 500 points (*2)

For latchedM500~M999, 500 points (*3)M2000~M4095, 2096 points (*3)M

Auxiliaryrelay

For specialM1000~M1999, 1000 points (some arelatched)

Totalis

4096points

Contacts can beswitched betweenOn/Off in the program(some is latched)

100ms

T0~T199, 200 points (*2)T192~T199 is for subroutine

T250~T255, 6-point Accumulative type (*4)

10msT200~T239, 40 points (*2)

T240~T245, 6-point Accumulative type (*4)

Relaybitmode

T Timer

1ms T246~T249, 4-point Accumulative type (*4)

Total

is256

points

When the timer thatset by TMR

command attains, theT contact with thesame number will beOn.


30/458

2 DVP-PLC Function



16-bit count upC0~C99, 100 points (*2)C100~C199, 100 points (*3)

32-bit countup/down

C200~C219, 20 points (*2)C220~C234, 15 points (*3)C Counter

High-speedcounter

C235~C244, 1-phase 1 input, 10 points (*3)

C246~C249, 1-phase 2 inputs, 4 points(*3)C251~C254, 2-phases 2 inputs, 4 points (*3)

Totalis

253

points

When the timer thatset by CNT(DCNT)command attains, the

contact C will be On.

Initial steppoint

S0~S9, 10 points (*2)

For zero pointreturn

S10~S19, 10 points (use with IST command)(*2)

For general S20~S499, 480 points (*2)

For latched S500~S899, 400 points (*3)

SSteppoints

For alarm S900~S1023, 124 points (*3)

Totalis

1024points

Usage device of stepladder diagram (SFC)

T Present value of timer T0~T255, 256 pointsWhen timer attains,the contact of timerwill be On.

C Present value of counterC0~C199, 16-bit counter, 200 pointsC200~C254, 132-bit counter, 53 points

When timer attains,the contact of timerwill be On.

For general D0~D199, 200 points, (*2)

For latchedD200~D999, 800 points (*3)D2000~D9999, 8000 points (*3)

For special D1000~D1999, 1000 points

DDataregister

For index E0~E7, F0~F7, 16 points (*1)

Total is10000points

It is the memory areafor storing data. Eand F can be used asspecial purpose ofindex indication

RegisterWORDdata

None File register K0~K9999(10000 points) (*4)Extension register forstoring data

N Master control nested N0~N7, 8 pointsMaster control nested

control pointP For CJ, CALL commands P0~P255, 256 points

The location pointer ofCJ, CALL

External interrupt

I00(X0), I10(X1), I20(X2), I30(X3), I40

(X4), I50(X5), 6 points

(=1, rising-edge trigger , =0, falling-edge

trigger )

Time interrupt

I6, I7, I8, 3 points(1~99ms) time

base=1msI8, 1 point (1~99, time base=0.1ms)

High-speed counterattained interrupt

I010, I020, I030, I040, I050, I060, 6 points

Pulse interrupt I110, I120, I130, I140, 4 points

Pointer

I

Interrupt

Communicationinterrrupt

I150

The location pointer ofinterrupt subroutine

K Decimal systemK-32,768 ~ K32,767 (16-bit operation)K-2,147,483,648 ~ K2,147,483,647 (32-bitoperation)

Constant

H Hexadecimal systemH0000 ~ HFFFF (16-bit operation)H00000000 ~ HFFFFFFFF (32-bit operation)


31/458

2 DVP-PLC Function


*1: the area of non-latched is fixed, it cant be changed.

*2: the area of non-latched, it can be changed to latched area by parameter setting.

*3: latched area can be changed to non-latched area by parameter setting.

*4: latched area is fixed, it cant be modified. (the area marked withcant be changed)

Latched setting for each EH model:

* 1: HFFFF means factory setting is non-latched.

When switching between power On/Off or MPU RUN/STOP mode, the memory type of version 5.5 and higher of ES,

ES/EX/SS series will be as following:

Memory typePower

Off=>OnSTOP=>RUN RUN=>STOP

Clear all M1031Non-latched

area

Clear all M1032latched area

Factorysetting

When M1033=Off, clearNon-latched Clear

When M1033=On, unchangedClear Unchanged 0

Latched Unchanged Unchanged Clear Unchanged

Special M,Special D,index register

Initial Unchanged UnchangedInitial

setting

For general For latched Special auxiliary relay Latched

M0~M499 M500~M999 M1000~M1999 M2000~M4095MAuxiliary relay

Start: D1200(K500)End: D1201(K999)

Some are latched andthey cant be changed.

Start: D1202(K2000)End: D1203(K4095)

100 ms 10 ms 10ms 1 ms 100 ms

T0 ~T199 T200~T239 T240~T245 T246~T249 T250~T255

Factory setting isnon-latched

Factory setting isnon-latched

TTimer

Start: D1204 (HFFFF)*1

End: D1205 (HFFFF)*1

Start: D1206 (HFFFF)*1

End: D1207 (HFFFF)*1

Accumulative typeFixed latched

16-bit count up 32-bit count up/down 32-bit high-speed count up/down

C0~C99 C100~C199 C200~C219 C220~C234 C235~C245 C246~C255

Non-latched(default)

Latched (default)Non-latched

(default)Latched(default)

Latched (default)C

Counter

Start: D1208 (K100)End: D1209 (K199)

Start: D1210 (K220)End: D1211 (K234)

Start: D1212 (K235)End: D1213 (K255)

InitialZero point

returnFor general Latched Step point for alarm

S0~S9 S10~S19 S20~S499 S500~S899 S900~S1023

Non-latched (default) Latched (default)S

Step relay

Start: D1214 (K500)End: D1215 (K899)

Always is latched

For general Latched Special register Latched

D0~D199 D200~D999 D1000~D1999 D2000~D9999

Non-latched (default) Latched (default) Latched (default)D

Register

Start: D1216 (K200)End: D1217 (K999)

Some is latched, it cantbe changed Start: D1218 (K2000)

End: D1219 (K9999)


32/458

2 DVP-PLC Function


The memory type of EP/SA/EH models will be as following:

Memory typePower

Off=>OnSTOP=>RUN RUN=>STOP

Clear all M1031Non-latched

area

Clear all M1032latched area

Factorysetting

When M1033=Off, clearNon-latched Clear

When M1033=On, No changeClear Unchanged 0

Latched Unchanged Unchanged Clear 0

Special M,Special D,index register

Initial Unchanged UnchangedInitial

setting

File Register Unchanged 0

2.2 Value, constant [K] / [H]

K DecimalK-32,768 ~ K32,767 (16-bit operation)K-2,147,483,648 ~ K2,147,483,647 (32-bit operation)

Constant

H HexadecimalH0 ~ HFFFF (16-bit operation)H0 ~ HFFFFFFFF (32-bit operation)

There are five value types for DVP-PLC to use by the different control destination. The following is the

explanation of value types.

1. Binary Number (BIN)

It uses binary system for the PLC internal operation or storage. The relative information of binary system is in the

following.

Bit : Bit is the basic unit of binary system, the status are 1 or 0.

Nibble : It is made up of continuous 4 bits, such as b3~b0. It can be used to representnumber 0~9 of decimal or 0~F of hexadecimal.

Byte : It is made up of continuous 2 nibbles, i.e. 8 bits, b7~b0). It can used torepresent 00~FF of hexadecimal system.

Word : It is made up of continuous 2 bytes, i.e. 16 bits, b15~b0. It can used torepresent 0000~FFFF of hexadecimal system.

Double Word : It is made up of continuous 2 words, i.e. 32 bits, b31~b0. It can used torepresent 00000000~FFFFFFFF of hexadecimal.

The relations among bit, nibble, byte, word, and double word of binary number are shown as follows.

NB0NB1NB2NB3NB4NB5NB6NB7

BY3 BY2 BY1 BY0

W1

DW

W0

Double Word

Word

Byte

Nibble

Bi t

2. Octal Number (OCT)

The numbers of external input and output terminal of DVP-PLC use octal number.Example:

External input: X0~X7, X10~X17(device number)


33/458

2 DVP-PLC Function


External output: Y0~Y7, Y10~Y17(device number)

3. Decimal Number (DEC)

The suitable time for decimal number to use in DVP-PLC system.

To be the setting value of timer T or counter C, such as TMR C0 K50. (K constant)

To be the device number of S, M, T, C, D, E, F, P, I. For example: M10, T30. (device number)

To be operand in application command, such as MOV K123 D0. (K constant)

4. BCD (Binary Code Decimal, BCD)

It shows a decimal number by a unit number or four bits so continuous 16 bits can use to represent the

four numbers of decimal number. BCD code is usually used to read the input value of DIP switch or output

value to 7-segment display to be display.

5. Hexadecimal Number (HEX)

The suitable time for hexadecimal number to use in DVP-PLC system.

To be operand in application command. For example: MOV H1A2B D0. (constant H)

Constant K:

In PLC, it is usually have K before constant to mean decimal number. For example, K100 means 100 in

decimal number.

Exception:

The value that is made up of K and bit equipment X, Y, M, S will be bit, byte, word or double word. Forexample, K2Y10, K4M100. K1 means a 4-bit data and K2~K4 can be 8, 12 and 16-bit data separately.

Constant H:

In PLC, it is usually have H before constant to mean hexadecimal number. For example, H100 means 100 in

hexadecimal number.

Reference Chart:

Binary(BIN)

Octal(OCT)

Decimal(DEC)

BCD(Binary Code Decimal)

Hexadecimal(HEX)

For PLC internal operationEquipment

X, Y number

Constant K,

equipment M, S, T, C,D, E, F, P, I number

For DIP Switch and 7-segmentdisplay Constant H

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 1 1 1 0 0 0 0 0 0 0 1 1

0 0 0 0 0 0 1 0 2 2 0 0 0 0 0 0 1 0 2

0 0 0 0 0 0 1 1 3 3 0 0 0 0 0 0 1 1 3

0 0 0 0 0 1 0 0 4 4 0 0 0 0 0 1 0 0 4

0 0 0 0 0 1 0 1 5 5 0 0 0 0 0 1 0 1 5

0 0 0 0 0 1 1 0 6 6 0 0 0 0 0 1 1 0 6

0 0 0 0 0 1 1 1 7 7 0 0 0 0 0 1 1 1 7

0 0 0 0 1 0 0 0 10 8 0 0 0 0 1 0 0 0 8

0 0 0 0 1 0 0 1 11 9 0 0 0 0 1 0 0 1 9

0 0 0 0 1 0 1 0 12 10 0 0 0 1 0 0 0 0 A0 0 0 0 1 0 1 1 13 11 0 0 0 1 0 0 0 1 B

0 0 0 0 1 1 0 0 14 12 0 0 0 1 0 0 1 0 C

0 0 0 0 1 1 0 1 15 13 0 0 0 1 0 0 1 1 D


34/458

2 DVP-PLC Function


Binary(BIN)

Octal(OCT)

Decimal(DEC)

BCD(Binary Code Decimal)

Hexadecimal(HEX)

For PLC internal operationEquipment

X, Y number

Constant K,equipment M, S, T, C,D, E, F, P, I number

For DIP Switch and 7-segmentdisplay

Constant H

0 0 0 0 1 1 1 0 16 14 0 0 0 1 0 1 0 0 E

0 0 0 0 1 1 1 1 17 15 0 0 0 1 0 1 0 1 F0 0 0 1 0 0 0 0 20 16 0 0 0 1 0 1 1 0 10

0 0 0 1 0 0 0 1 21 17 0 0 0 1 0 1 1 1 11

:::

:::

:::

:::

:::

0 1 1 0 0 0 1 1 143 99 1 0 0 1 1 0 0 1 63

2.3 The Numbering and Function of External Input/Output Contact [X] / [Y]

Input/output contact number:(octal number)

For MPU, the number of input and output contact will be counted from X0 and Y0. The number will be changed

with points of MPU. For I/O extension unit, the number of input / output terminal is counted with the connection

sequence of MPU.

For ES, EX, SS Models:

Model no DVP-14ES DVP-14SS DVP-20EX DVP-24ES DVP-32ES DVP-60ES Extension I/O

Input XX0~X7

(8 Points)

X0~X7

(8 Points)

X0~X7

(8 Points)

X0~X17

(16 Points)

X0~X17

(16 Points)

X0~X43

(36 Points)

X20(X50)~X177

(Note)

Output YY0~Y5

(6 Points)

Y0~Y5

(6 Points)

Y0~Y5

(6 Points)

Y0~Y7

(8 Points)

Y0~Y17

(16 Points)

Y0~Y27

(24 Points)

Y20(Y30)~Y177

(Note)

Note: Besides DVP-60ES, the started input number of extension unit is from X20 and the started output

number of extension unit from Y20. The started input number of DVP-60ES is X50 and the started

output number of DVP-60ES is Y30. The number of extension I/O is increased by 8 times and if it is

less than 8 points, it will count with 8 points.

EP/SA model:

Model no DVP-12SA (Note1) DVP-14EP DVP-32EP Extension I/O

Input X X0~X7 (8 points) X0~X7 (8 points) X0~X17 (16 points) X20~X177 (note 2)

Output Y Y0~Y3 (4 points) Y0~Y7 (8 points) Y0~Y17 (16 points) Y20~Y177 (note 2)

Note 1: All SA functions are the same as EP except function extension card. All SA extension units share

with SS series.

Note 2: The started input number of extension unit is from X20 and the started output number of extension

unit from Y20. The number of extension I/O is increased by 8 times and if it is less than 8 points, it

will count with 8 points.


35/458

2 DVP-PLC Function


EH model:

Model no DVP-16EH DVP-20EH DVP-32EH DVP-48EH DVP-64EH DVP-80EH Extension I/O

Input XX0~X7

(8 points)

X0~X13(12

points)

X0~X17

(16 points)

X0~X27

(24 points)

X0~X37

(32 points)

X0~X47

(40 points)

X20~X377

(note)

Output YY0~Y7

(8 points)

Y0~Y7(8

points)

Y0~Y17

(16 points)

Y0~Y27

(24 points)

Y0~Y37

(32 points)

Y0~Y47

(40 points)

Y20~Y377

(note)

Note: Besides DVP-16EH and DVP-20EH, the started input/output number of extension unit starts with the

last number of MPU. The started input number of DVP-60EH is X20 and the started output number

of DVP-60EH is Y20. The numbers of extension I/O are sequential numbers. The input number can

be up to X377 and output number can be up to Y377.

Input relay: X0~X377

The number of input relay (or called input terminal) uses octal number. The points of EH model can be up

to 256 points, the range as follows: X0~X7, X10~X17, , X370~X377.

Output relay: Y0~Y377

The number of output relay (or called output terminal) uses octal number. The points of EH model can be

up to 256 points, the range as follows: Y0~Y7, Y10~Y17, , Y370~Y377.

Input/output contact Function:

The function of input contact X: input contact X reads input signal and enter PLC by connecting with inputequipment. It is unlimited usage times for A contact or B contact of each input contact X in program. The

On/Off of input contact X can be changed with the On/Off of input equipment but cant be changed by using

peripheral equipment (HPP or WPLSoft).

( There is a special relay M1304 in EH model to force input contact X On/Off by peripheral equipment

HPP or WPLSoft, but PLC wont receive any external input signal at this time.)

Output contact Y Function:

The mission of output contact Y is to drive the load that connects to output contact Y by sending On/Off

signal. There are two kinds of output contact: one is relay and the other is transistor. It is unlimited usage

times for A or B contact of each output contact Y in program. But there is number for output coil Y and it is

recommended to use one time in program. Otherwise, the output result will be decided by the circuit of last

output Y with PLC program scan method.


36/458

2 DVP-PLC Function


X0

X10

Y0

Y0

1

2

Y0 is repeated

The output of Y0 will be decided by circuit 2 , i.e.

decided by On/Off of X10.

The Handling Process of PLC Program (Batch I/O)

X0

Y0

Y0

M0

input X

input terminal

read in memory

Input signal memory

DeviceMemory

read X0 state from memory

Write Y0 state into

read Y0 state from memory

Write M0 state into

Output

Program

Input signal

output

Y output

output terminal

output latched memory

Input signal:

1. PLC will read the On/Off of input signal into the

memory of input signal before executing

program.

2. The input signal state in memory wont change

if On/Off of the input signal changes during

executing. The new On/Off state will be read

into memory in the next scan.

3. The delay time from the changes of external

signal OnOff or OffOn to the contact will be

10ms.

Program:

PLC executes each command in program from

address 0 after reading On/Off state of input

signal in input signal memory and save each

On/Off of output coil into each equipment

memory.

Output:

1. When executing END command, send On/Off

state of Y in memory to output latched memory.

In fact, this memory is the coil of output relay.2. The delay time from the change of OnOff or

OffOn of relay coil to contact On/Off.

2.4 The Numbering and Function of Auxiliary Relay [M]

The number of auxiliary relay:(decimal number)

ES, EX, SS models:

For general M0~M511, M768~M999, 744 points. It is fixed to be non-latched area.

For latched M512~M767, 256 points. It is fixed to be latched area.Auxiliary relayM

For special M1000~M1279, 280 points. Some are latched.

Total is1280

points


37/458

2 DVP-PLC Function


EP/SA models:

For general M0~M511, 512 points. It is fixed to be non-latched area.

For latchedM512~M999, M2000~M4095, 2584 points. It can be changed tonon-latched area by parameters.

Auxiliary relayM

For special M1000~M1999, 1000 points.

Total is4096points

EH models:

For generalM0~M499, 500 points. It can be changed to latched area by settingparameters.

For latchedM500~M999, M2000~M4095, 2596 points. It can be changed tonon-latched area by setting parameters.

Auxiliary relayM

For special M1000~M1999, 1000 points. Some are latched.

Total is4096points

Auxiliary Relay Function

There are output coil and A, B contacts in auxiliary relay M and output relay Y. It is unlimited usage times in

program. User can control loop by using auxiliary relay, but cant drive external load directly. There are three types

divided by its characteristics.

1. Auxiliary relay for general : It will reset to OFF when power loss during running. Its state will be OFF whenpower on after power loss.

2. Auxiliary relay for latched : The state will be saved when power loss during running and the state whenpower on after power loss will be the same as the state before power loss.

3. Auxiliary relay for special : Each special auxiliary relay has its special function. Please dont use undefinedauxiliary relay. Please refer to 2.10 Special relay and special register for eachspecial auxiliary relay and 2.11 Functions of special auxiliary relay and special

registers.

2.5 The Numbering and Function of Step Relay [S]

The numbering of auxiliary relay (by decimal number):

ES, EX, SS models:

Initial latched S0~S9, 10 points. It is fixed to be latched area.

Zero point

return latched

S10~S19, 10 points. (use with IST command) It is fixed to be

latched area.Step relay S

Latched S20~S127, 108 points. It is fixed to be latched area.

Total is

128

points

EP/SA Models:

For initial S0~S9, 10 points. It is fixed to be non-latched area.

For zero point

return

S10~S19, 10 points. (use with IST command) It is fixed to be

non-latched area.

For general S20~S511, 492 points. It is fixed to be non-latched area.

For latchedS512~S895, 384 points. It can be changed to be non-latched area

by parameters.

Step relay S

For alarm S896~S1023, 128 points. It is fixed to be latched area.

Total is

1024

points


38/458

2 DVP-PLC Function


EH Models:

For initial S0~S9, 10 points. It can be latched area by setting parameters.

For zero point

return

S10~S19, 10 points. (use with IST command). It can be latched

area by setting parameters.

For general S20~S499, 480 points. It can be latched area by setting parameters.

For latchedS500~S899, 400 points. It can be non-latched area by setting

parameters.

Step relay S

For alarmS900~S1023, 124 points. It can be latched area by setting

parameters.

Total is

1024points

The function of step relay:

Step relay S is the basic equipment of step ladder diagram and it can set process easily in PLC. In step ladder

diagram (or call Sequential Function Chart, SFC), it should be used with command STL, REL and etc.

There are 1024 points, S0~S1023, in step relay S. Like output relay Y, there are output coil and A, B contacts in

each step relay S and unlimited usage times in program. But it cant drive external load directly. Step relay (S) can be

used as general auxiliary relay when not use with step command. There are four types divided by its characteristics.

1. Initial step relay : S0~S9, 10 points.In Sequential Function Chart (SFC), it is the step point for initiating.

2. Zero point return steprelay

: S10~S19, 10 points.S10 S19 are for zero point return when usingAPI 60 IST in program. If it cantuse IST command, they will be used as general step relay.

3. General step relay : EP/SA model: S20~S511, 492 points. EH mode: S20~S499, 480 points.

Those step points that are used as general in sequential function chart (SFC).They will be cleared when power loss after running.

4. Latched step relay : ES, EX, SS models: S20~S127, 108 points. EP models: S512~S895,384points. EH models: S500~S899, 400 points.In sequential function chart (SFC), latched step relay will be saved when powerloss after running. The state of power on after power loss will be the same asthe sate before power loss.

5. Step relay for alarm : EP/SA models: S896~S1023, 128 points. EH models: S900~S1023, 124points.The step relay for alarm uses with alarm drive commandAPI 46 ANS to be thecontact for alarm. It is used to record warning and eliminate externalmalfunction.

2.6 The Numbering and Function of Timer [T]

The numbering of timer (by decimal number):

ES, EX, SS models:

100ms for general T0~T63, 64 points

10ms for generalT64~T126, 63 points (when M1028=On, it is 10ms. when M1028=Off, it

is 100ms)Timer T

1ms for general T127, 1 points

Total is

128

points


39/458

2 DVP-PLC Function


EP/SA model:

100ms for general T0~T199, 200 points. (T192~T199 are the timers for subroutine.)

100ms foraccumulative

T250~T255, 6 points. It is fixed to be latched area.

10ms for general T200~T239, 40 points.

10ms for

accumulative


Timer T

1ms foraccumulative


Total is256

points

EH model:

100ms for generalT0~T199, 200 points. It can be latched area by setting parameters.(T192~T199 are the timers for subroutine.)



10ms for general T200~T239, 40 points. It can be latched area by setting parameters.



Timer T

1ms foraccumulative


Total is256

points

Timer function:

The unit of timer is 1ms, 10ms and 100ms. The count method is count up. The output coil will be ON when the

present value of timer equals to the settings. The setting is K in decimal number. Data register D can be also used as

settings.

The real setting time of timer = unit of timer * settings

There are three types divided by these characteristics as follows.

1. General timer:

ES/EP/SA Series

Models:

General timer will count once when executing command END. Output coil will be On if

timer attains when executing command TMR.

EH Series Models :General timer will count once when executing command TMR. Output coil will be On if


T0

Y0

X0

TMR T0 K100

X0

T0

Y0

K100

10 sec

presentvalue

When X0=On, timer T0 is counted up with

100ms. The output coil T0=On, when the present

value of timer equals to setting (K100).

When X0=Off or power off, timer T0 will be

cleared to 0 and output coil T0 will be OFF.

2. Accumulative timer:


40/458

2 DVP-PLC Function


ES/EP Series Models :General timer will count once when executing command END. Output coil will be On iftimer attains when executing command TMR.

EH Series Models :General timer will count once when executing command TMR. Output coil will be On iftimer attains when executing command TMR.

T250

Y0

X0

TMR T250 K100

X0

T2

Y0

K100

T1+T2=10sec

T250

T1

presentvalue

When X0=On, timer T250 is counted up with100ms. The output coil T0=On, when the present

value of timer equals to settings (K100).If X0=Off or power off during counting, timer

T250 pauses and keep on counting after X0=On. Thepresent value counts up till the present value of timerequals to settings (K100), output coil T0=On.

3. Timer for subroutine

If timer is used in subroutine or have interrupt in subroutine, use timer T192~T194 for it.

ES/EP Series Models :General timer will count once when executing command END. Output coil will be On if


EH Series Models :General timer will count once when executing command TMR. Output coil will be On if


If general timer is used in subroutine or interrupt to insert in subroutine and the subroutine wont be executed,

timer cant count correctly.

Designate method of settings: actual setting time of timer = unit * settings.

1. Designate constant K: Settings designates constant K directly

2. Designate indirectly D: Settings use data register D to be indirect designation

The detail of timer:

Beside timer used for subroutine, the flow chart of general timer is in the following:

T0

Y0

X0

T0 K100TMR

input reflash

When X0=On,it starts to count.

1st scan 2nd scan Nth scan (N+1)th scan

contact Y0=On

contact T0 is OnT0 counts to10sec now,but contactisnt On.

Timer will start when executing TMR command.If scan time is longer, same scan will count withplural timing pulse automatically.

From action above, the action since the coil is started to be ON in detail are in the following:

+T0T

-

: 1ms timer is 0.001 second, 10ms timer is 0.01 second, 100ms timer is 0.1 second

T : Setting time of timer (second)

T0 : Scan time (second)


41/458

2 DVP-PLC Function


If contact is wrote prior to TMR command in program, it needs to add 2*T0 (two times scan time) in the worst

situation.

If timer setting is 0, output contact will be ON when TMR command is executed in the next time.

2.7 The Numbering and Function of Counter [C]

The numbering of counter (by decimal number):

ES, EX, SS model:

16 bits count up forgeneral

C0~C111, 112 pointsCounter C

16 bits count up forlatched

C112~C127, 16 points. it is always latched area

1-phase inputC235~C238, C241, C242, C244, 7 points. It is alwayslatched area

1-phase 2 inputs C246, C247, C249, 3 points. It is always latched area32 bits count up/downHigh speed counters C

2-phase inputs C251, C252, C254, 3 points. It is always latched area

Total is141

points

EP/SA models:

16 bits count up forgeneral

C0~C95, 96 points. It is fixed to be non-latched area.

16 bits count up forlatched

C96~C199, 104 points. It can be non-latched area by settingparameters.

32 bits countup/down forgeneral

C200~C215, 15 points. It is fixed to be non-latched area.Counter C

32 bits countup/down forlatched

C216~C234, 19 points. It can be changed to be non-latchedarea by setting parameters.

1-phase input forlatched

C235~C242, C244, 9 points. It can be changed to benon-latched area by setting parameters.

1-phase 2 inputsfor latched

C246, C247, C249, 3 points. It can be changed to benon-latched area by setting parameters.

32 bits count up/downHigh speed counters C

2-phase 2 inputsfor latched

C251, C252, C254, 3 points. It can be changed to benon-latched area by setting parameters.

Total is250

points

EH models:

16-bit count up forgeneral

C0~C99, 100 points. It can be changed to be latched areaby parameters.

16-bit count up forlatched

C100~C199, 100 points. It can be changed to benon-latched area by parameters.

32-bit count up/downfor general

C200~C219, 20 points. It can be changed to be latched areaby parameters.

Counter C

32-bit count up/downfor latched

C220~C234, 15 points. It can be changed to be non-latchedarea by parameters.

Software 1-phase 1input


Hardware 1-phase 1input


Hardware 1-phase 2inputs


32 bits count up/downHigh-speed counters C

Hardware 1-phase 2inputs


Total is253

points

Features:


42/458

2 DVP-PLC Function


Item 16 bits counters 32 bits counters

Type General General High speed

Countdirection

Count up Count up/down

Settings 0~32,767 -2,147,483,648~+2,147,483,647

Designate for

constant

Constant K or data register D Constant K or data register D (2 for designated)

Presentvalue change

Counter will stop when attainingsettings

Counter will keep on counting when attaining settings

Outputcontact

When count attains settings,contact will be ON and latched.

When count up attains settings, contact will be ON and latched.When count down attains settings, contact will reset to OFF.

Reset action The present value will reset to 0 when RST command is executed and contact will reset to OFF.

Presentregister

16 bits 32 bits

Contactaction

After scanning, act together. After scanning, acttogether.

Act immediately when count attains. Ithas no relation with scan period.

Functions:

When pulse input signal of counter is from OFF to ON, the present value of counter equals to settings and output

coil is ON. Settings are decimal system and data register D can also be used as settings.

16-bit counters C0~C199:

1. Setting range of 16-bit counter is K0~K32,767. (K0 is the same as K1. output contact will be ON

immediately at the first count.

2. General counter will be clear when PLC is power loss. If counter is latched, it will remember the value

before power loss and keep on counting when power on after power lo

Dvp Ss Manual

Documents

Transcript of Dvp Ss Manual