Tracing back signals in PMC 2 Ladder and there are alot of E contacts that do not have coils in PMC 2 or PMC 1. They are not coming from the PLC communicating with the CNC. Where exactly are they coming from?Are there background scripts? Coming from the CNC side?(I thought F was the standards for bits coming from CNC to PMC). Kinda hard to trace anything back when the signal that is dropping off doesn't appear to be coming from anywhere