Delta Electronics VFD-E manual Incp D0, Decrement, Decp D0

Appendix D How to Use PLC Function

Operands:

D: Destination device

Explanations:

1.If the instruction is not a pulse execution one, the content in the designated device D will plus “1” in every scan period whenever the instruction is executed.

2.This instruction adopts pulse execution instructions (INCP).

3.In 16-bit operation, 32,767 pluses 1 and obtains -32,768. In 32-bit operation,

2,147,483,647 pluses 1 and obtains -2,147,483,648. Program Example:

When X0 goes from Off to On, the content in D0 pluses 1 automatically.

X0

INCP D0

API

25

Mnemonic		Operands	Function
DEC	P	D	Decrement

Type	Bit Devices					Word devices					Program Steps
OP	X	Y	M	K	H	KnX	KnY	KnM	T	C	D DEC, DECP: 3 steps
D							*	*	*	*	*

Operands:

D:Destination Explanations:

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

2.This instruction adopts pulse execution instructions (DECP).

3.In 16-bit operation, -32,768 minuses 1 and obtains 32,767. In 32-bit operation, - 2,147,483,648 minuses 1 and obtains 2,147,483,647.

Program Example:

When X0 goes from Off to On, the content in D0 minuses 1 automatically.

X0

DECP D0

D-56 Revision June 2008, 04EE, SW--PW V1.11/CTL V2.11