SIMATIC S7-1200 G2, replacement part front flaps CPU 1212 (CPU 1212 front flap top/front flap bottom/Signal Board cover), 4 pieces each SIMATIC S7-1200 Basic Controller - flexible thanks to a wide range of communication options. For the SIMATIC S7-1200 family, demand-based accessories are also available. This ranges from the battery board, for long-term buffering of the real-time clock, to memory cards, push-in terminals and input simulators, to the Ethernet switch with four RJ45 ports.