Siemens SIMATIC ET 200pro Operating Instructions Manual page 32

Pin assignment of the RJ45 connector
The assignment corresponds to the Ethernet standard for an RJ45 connection plug.
RJ45 socket X1 P3:
● If autonegotiation is activated, then the RJ45 socket has the switch assignment (MDI-X).
● If autonegotiation is activated, then autocrossing is active and the RJ45 socket has either
a device assignment (MDI) or switch assignment (MDI-X).
Figure 4-3
Connect the RJ45 connector
1. Unscrew the screw cap from the CPU.
2. Push the RJ45 connection plug into the socket on the CPU.
Note
Note that IP65, IP66 and IP67 degree of protection is no longer ensured when the RJ45
connector is plugged in.
Restoring degree of protection IP65, IP66 and IP67 after removing the RJ45 connector
In order to achieve degree of protection IP65, IP66 and IP67, install the screw cap back
onto the CPU. Hand-tighten the cap (minimum tightening torque 1.0 Nm).
CPU 1516pro-2 PN (6ES7516-2PN00-0AB0)
Operating Instructions, 11/2019, A5E35873416-AC
View of RJ45 socket
Mounting and connecting
4.4 Connecting an RJ45 socket
31