Siemens Simatic ET200pro

Mounting and connecting
3.3 Connecting the connection module CM CPU 2PN M12 7/8"
CPU 1516pro-2 PN (6ES7516-2PN00-0AB0)
Operating Instructions, 09/2016, A5E35873416-AA
29
Pin assignment of the M12 connector
M12 circular socket X1-P1 R and X1-P2 R
● If autonegotiation is activated, then the M12 circular socket has the switch assignment
(MDI-X).
● If autonegotiation is activated, then autocrossing is active and the M12 circular socket has
either a device assignment (MDI) or switch assignment (MDI-X).
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)
Terminal
MDI (device assignment)
MDI-X (switch assignment)
Assignment
Assignment
X1 P1 R, X1 P2 R, X2-P1 for connection of PROFINET
1
TD_P (Transmit Data +)
RD_P (Receive Data +)
2 RD_P (Receive Data +) TD_P (Transmit Data +)
3
TD_N (Transmit Data –)
RD_N (Receive Data –)
4 RD_N (Receive Data –) TD_N (Transmit Data –)
Thread Functional ground