CPU base for S7-200 small-machine control
The Siemens 6ES7214-1AD21-0XB0 is a SIMATIC S7-200 CPU 224 compact unit with a DC power supply, carrying 14 DC digital inputs and 10 DC digital outputs, 8 KB of code memory and 5 KB of data memory, and PROFIBUS DP extension capability.
The 14 DC inputs and 10 DC outputs match a mid-range I/O budget for a stand-alone machine or small process cell; the 8 KB code memory is sized for ladder logic up to a few hundred rungs, with headroom for a single DP master or slave configuration. PROFIBUS DP extension means this CPU can join a legacy fieldbus network — useful for retrofits or lines where a DP master controls distributed remote I/O.