1. internal counter CThe internal counter counts the internal signals (such as X, Y, M, S, T, etc.) when performing the scan operation. The connection and disconnection time of internal input signal should be longer than that of PLC.(1) the 16 bit increase counter (C0 ~ C199) is 200 points, of which C0 ~ C99 is a … Continue reading How to use counter C and auxiliary relay M in MITSUBISHI PLC programming