... -18R-C10DI/8DO(relay), 24v, 3 channels AB-phase counter, 3 channelsexternal interruption. XP3-18T-C10DI/8DO(transistor), 24v, 3 channels AB-phase counter,3 channels external interruption, 2 ... axes pulse output.XP3-18RT-C10DI/8DO(4 relay, 4 transistor), 24v, 3 channels AB-phasecounter, 3 channels external ...