omron instruction

HI when increment (@INC) and decrement (@DEC) instruction is used
please tell me one application . thanks

An incrementing or decrementing counter. Each time the condition preceding the instruction transitions from off to on, the value is inc or dec by one.

Note: the @ symbolises a one-shot, if there is no @ present, the value will inc/dec each scan as long as the preceding condition is on.

It may pay to get yourself a copy of the Omron Manuals, they can take a bit to understand, but once you have a grasp, they get better.

Perhaps your cycle count is stored in memory area DM100.

Each time the cycle is done @INC DM100

Cycle done bit ........Cycle count
-\\-------------------- @INC DM100

I use it regularly from an thumbwheel input from a SCADA package to set SVs for timers and counters. Also use it in routines for random SVs for timers.