Siemens SIMOCODE pro System Manual page 121

4 digital inputs (non-safety-oriented) 24 V DC
Table 1-25: Inputs, outputs and voltage supply of the digital module
1)
Warning
Dangerous voltage
Use a power supply unit compliant with IEC 60536, Class III (SELV or PELV)!
Overvoltage limiters are required for inductive loads.
SIMOCODE pro
GWA 4NEB 631 6050-22 DS 03
Inputs
Failsafe PROFIsafe (DM-F PROFIsafe)
1
Supply )
2 monostable relay outputs
inputs (non-safety-oriented)
System description
Outputs
1-103