... HMI part optional clock24V powerPLC part10 digital input 8 digital output( relay )Function similar to PLC XC2 2 channels AB-phase counter ... to PLC XC2XP2-18RT-C10DI/8DO(4 relay, 4 transistor), 24v, 2 channels pulse output,2 channels AB-phase counter, 3 channels ... counter,3 channels external interruption, 2 axes pulse output.XP3-18RT-C10DI/8DO(4 relay, 4 transistor), 24v, 3 channels AB-phasecounter ...