Delta DVP-ES2/EX2/SS2/SA2/SX2/SE manual Dec

DVP - ES2/EX2/SS2/SA2/SX2/SE Operation Manual - Programming

API Mnemonic Operands Function Controllers

25

D

DEC

P

Decrement

ES2/EX2

SS2

SA2

SX2

SE

Type

Bit Devices

Word devices

Program Steps

OP

X

Y

M

S

K

H KnX KnY KnM KnS T

C

D

E

F DEC, DECP: 3 steps

D

*

*

*

*

*

*

*

* DDEC, DDECP: 5 steps

PULSE

16-bit

32-bit

ES2/EX2

SS2

SA2

SX2

ES2/EX2

SS2

SA2

SX2 ES2/EX2

SS2

SA2

SX2

SE

SE

SE

Operands:

D: Destination device

Explanation:

1.If the instruction is not used in pulse execution mode, the content in the designated device D will minus “1” in every scan whenever the instruction is executed.

2.This instruction is generally used in pulse execution mode (DECP, DDECP).

3.In 16-bit instruction, if –32,768 is reached and “1” is minused, it will write a value of +32,767 to the destination. In 32-bit instruction, if -2,147,483,648 is reached and “1” is minused, it will write a value of +2,147,483,647 to the destination.

4.If operand D uses index F, only a 16-bit instruction is applicable.

5.The operation results will not affect M1020 ~ M1022

Program Example:

When X0 is triggered, the value in D0 will be decremented by 1.

X0

DECP D0

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