SIMATIC S7-1200, Communication module CM 1241, RS232, 9-pole D-sub (pin), supports Freeport
SIMATIC S7-1500, TM count 2x 24 V counter module, 2 channels for 24 V incremental encoder or pulse encoder, 3 DI, 2 DQ per channel
SIMATIC S7-1200, Digital output SM 1222, 8 DO, relay 2 A
SIMATIC S7-1200, Simulator module SIM 1274, for CPU 1211/1212 8 input switches DC 24V
SIMATIC S7-1500, System power supply PS 60W 24/48/60 V DC, supplies the backplane bus of the S7-1500 with operating voltage
communications module CM 1242-5; for connection of SIMATIC S7-1200 to PROFIBUS as DP slave module.