Siemens simatic s7 1200 sb 1222 digital output module siemens 6es7222 1ad30 0xb0 the siemens 6es7222 1ad30 0xb0 sb 1222 is a digital input output signal module that convert the internal signal level of the s7 1200 to the external signal level required for the process the signal module is plugged directly into the receptacle on the front of the s7 1200 cpu and connects electrically and mechanically to the cpu the cpu mounting dimensions remain unchanged siemens 6es7222 1ad30 0xb0 s7 1200