Siemens SIRIUS 3RK3 Equipment Manual page 116

Description of the hardware
5.1 Description of the individual modules
Internal circuit diagram
Figure 5-18
Terminal designations of the PROFINET interface module
Terminal
A1+
A2-
FE
Interfaces of the PROFINET interface module
Interface
X1
X2
X3
Display elements of the PROFINET interface module
Element
DEVICE
PORT
BF
SF
116
PROFINET interface internal circuit diagram
Meaning
Power supply
Ground
Functional ground
Meaning
Device interface
System interface
Ethernet RJ45
Meaning
Status
PROFINET connection status
Bus error
Group error
Explanation
24 V DC
Ground to 24 V DC
Shielding, equipotential bonding
Explanation
Connection of PC / PG, diagnostics display
Safety relay connection
PROFINET connection
SIRIUS 3RK3 Modular Safety System
Equipment Manual, 07/2020, NEB926253002000/RS-AC/006