Siemens SIPROTEC 7SC80 Series Manual page 212

Mounting and Commissioning
3.2 Checking Connections
Ethernet Connections at RJ45
If the interface is used for communication with the device, the data connection is to be checked.
Table 3-4 Socket Assignment
Pin No.
1
2
3
4
5
6
7
8
GPS Interface
Via the SMB socket, an active GPS antenna (5 V max. 50 mA) can be connected.
If no GPS interface is available, there is a cover instead.
212
Ethernet interface
Tx+
Tx-
Rx+
—
—
Rx-
—
—
SIPROTEC, 7SC80, Manual
E50417-G1140-C486-A1, Release date 12.2011