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6F3B0253
Basic Hardware and Function 155
7. Instructions
FUN 045 -1 Decrement
Expression
Input −[ -1 A ]− Output
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
Name Device Register Constant Index
X Y R S T. C. XWYWRWSW T C D I J K
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.
D0050 D0050
1022 - 1 1021
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.