PLC SIEMENS S7-1200 I/O
Digital inputs as supplement to the integral IO of the CPUs
The SM 1221 digital input signal modules convert the level of the external digital signals from the process to the internal signal level of the S7-1200.
PLC SIEMENS S7-1200 I/O
The SM 1221 digital input signal modules convert the level of the external digital signals from the process to the internal signal level of the S7-1200.