Decrements the memory data specified by the operand by 1.
On every execution of the instruction the device specified as the (D), has its current value decremented (decreased) by a value of 1. In 16 bit operation, when -32,768 is reached the next incrementation will write a value of +32,767 to the (D).
Examples of the use of DECP instructions on Mitsubishi PLC :
1. If X000=OFF then Value in D0=30.
2. If X000=ON then Value in D0=29.
3. If X000=OFF then Value in D0=29.
4. If X000=ON then Value in D0=28.
5. If X000=OFF then Value in D0=28.
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