I am working with a PLC5 program that is operating a machine without issues. The program is using several OTL (latch) instructions but I can not find the OTU (unlatch) instructions that goes with each bit. I cannot locate an OTU instruction in the program anywhere.
What am I over looking or can an OTL be unlatched another way I do not know about?
What am I over looking or can an OTL be unlatched another way I do not know about?