Fail-safe digital input modules are suitable for connecting
- Switches and 2-wire proximity switches (BEROs)
- Sensors according to NAMUR and mechanical contacts, also for signals from hazardous areas
The modules are implemented centrally with SIMATIC S7-31xF-2 DP and in the ET 200M distributed I/O station in combination with SIMATIC IM 151-7 F-CPU, S7-31xF-2 DP, S7-416F-2 and S7-400F/FH. They can also be used in non-safety-relevant standard mode and then respond like standard S7-300 modules.