Siemens SIMATIC ET 200pro Operating Instructions Manual page 29

Mounting and connecting
4.3 Connecting the connection module CM CPU 2PN M12 7/8"
M12 circular socket X2-P1:
Autocrossing is always active. As a result, the M12 circular socket has either a device
assignment (MDI) or switch assignment (MDI-X).
View of M12 connector, d-
coded (PROFINET)
Pin assignment of the 7/8" connector
View of 7/8" connector (supply voltage 1L+ und
2L+)
28
Terminal MDI (device assignment)
Assignment
X1 P1 R, X1 P2 R, X2 P1 for connection of PROFINET
1 TD_P (Transmit Data +)
2 RD_P (Receive Data +)
3 TD_N (Transmit Data –)
4 RD_N (Receive Data –)
Thread Functional ground
Terminal
X3 DC 24 V for infeed
X4 DC 24 V for loop-through
1
2
3
4
5
MDI-X (switch assignment)
Assignment
RD_P (Receive Data +)
TD_P (Transmit Data +)
RD_N (Receive Data –)
TD_N (Transmit Data –)
Assignment
Load voltage ground 2M
Ground for electronics/encoder supply 1M
Functional ground
Electronic / encoder supply 1L+
Load voltage supply 2L+
CPU 1516pro-2 PN (6ES7516-2PN00-0AB0)
Operating Instructions, 11/2019, A5E35873416-AC