Redundant instruction
This is a redundant instruction. It is replaced by: FP_DEC
Subtracts "1" from the 16-bit data specified by d if the trigger EN is in the ON-state. The result is stored in d.
Output
16-bit area to be decreased by 1
Instead of using this F instruction, we recommend using the corresponding FP7 instruction: FP_DECFP_DEC
if the calculated result is 0.
if the result exceeds the range of 16-bit data (underflow).