6F3B0250
Basic Hardware and Function
173
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. XW YW RW SW
T
C
D
I
J
K
A
Operation data
Ö
Ö
Ö
Ö
Ö
Ö
Ö
Ö
Ö
Ö
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.
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