Maple Systems MAPware-7000 - Manual (Page 70)

MAPware-7000 Ladder Logic Guide 62
1010-1041 rev. 00
Instruction 34- Decrement
Expression:
Space Requirement: 1 line x 3 column Location Requirement: Middle, Right rail
Function:
When the input is ON, the data of A is decreased by 1 and stored in A.
Execution Condition:
Input Operation Output
OFF No execution OFF
ON Execution ON
Operand:
Coil or Bit Register Constant Index
Name X Y B S T. C. M
X
W Y
W B
W S
W
T C D I J K
M
W
A
Operation
Data
√ √ √ √ √ √ √ √ √ √
Example:
At the rising edge of X005 changes from OFF to ON, the data of D0050 is decreased by 1 and
stored in D0050.
If the data of D0050 is 1022 before the execution, it will be 1021 after the execution.
Note:
There is no limit value for this instruction. When the data of operand A is -32768 before the
execution, it will be 32767 after the execution