SIMATIC S7-1200, simulator module SIM 1274 for CPU 1217C, 14 input switches, 10x DC 24V inputs, 4x 1.5V differential inputs SIMATIC S7-1200, simulator module SIM 1274 for CPU 1217C, 14 input switches, 10x DC 24V inputs, 4x 1.5V differential inputs SIMATIC S7-1200 Basic Controller - flexible thanks to a wide range of communication options. Accessories tailored to your needs are also available for the SIMATIC S7-1200 family. This ranges from the battery board for long-term buffering of the real-time clock to memory cards and input simulators to the Ethernet switch with four RJ45 ports.