S7-1200 - CPU 1211C The SIMATIC S7-1200 system comes in five different models, CPU 1211C, CPU 1212C, CPU 1214C, 1215C and 1217C, that may each be expanded to exactly fit your machine requirements. Function board can be added inside the front of any CPU to easily expand the digital or analog I/Os without affecting the physical size of the controller. SIMATIC S7-1200 CPU 1211C Series Control for clever compact solution With 10 integrated inputs and outputs Integrated Ethernet interface Fast counter Basic PID Controller Integrated real-time clock Alarm inputs Removable terminals on all modules Expandable with: 1 signal board (SB) or 1 communication board (CB) Max. 3 communication modules (CM) Siemens S7-1200