We are very new to S7 (one week Class) and no exp in Distributed Safety. We are trying to get an FB181 "F_CTU" working it just counts on its own accord we put a counter in the non safety part of the program it works fine. the input CU is from a SM 326 DI24xDC24V input module I64.0. the Enable in is tied to rail.
The input is a 25ms pulse normally high that goes low for 25ms at a rate of up to 15hz
The input is a 25ms pulse normally high that goes low for 25ms at a rate of up to 15hz
