6 Application Instructions API 00-49
DVP-PLC Application Manual
6-40
API Mnemonic
Operands
Function
25
D DEC P
Decrement
Controllers
ES/EX/SS SA/SX/SC EH/SV
Bit Devices
Word Devices
Program Steps
Type
OP
X Y M S K H
KnX
KnY
KnM KnS T C D E F
D
*
*
*
*
*
*
*
*
DEC, DECP: 3 steps
DDEC, DDECP: 5 steps
PULSE 16-bit 32-bit
ES EX SS SA SX SC EH SV ES EX SS SA SX SC EH SV ES EX SS SA SX SC EH SV
Operands:
D
: Destination device
Explanations:
1. If
D
is used in device F, only 16-bit instruction is applicable.
2.
See the specifications of each model for their range of use.
3.
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.
4.
This instruction adopts pulse execution instructions (DECP, DDECP).
5.
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.
6.
The operation results will not affect M1020 ~ M1022.
Program Example:
When X0 = Off
→
On, the content in D0 minuses 1 automatically.
X0
DECP
D0
Содержание DVP-PLC
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