Siemens Simatic 620 Owner's Manual page 148

Hardware Information
Ethernet RJ45 Connection
Figure 7-8 Ethernet port
Pin-No.
1
2
3
4, 5 *
6
7, 8 *
S
* is not necessary for data transfer
7-16
LED yellow
1
Designation
TD+ Transmitted data
TD– Transmitted data
RD+ Received data
SYMR Internal 75 Ω output
Received data
SYMT Internal 75 Ω output
Shield
LED green Connection
LED yellow Activity
LED green
8
Description
Output
Output
Input
-
Input
-
-
-
-
SIMATIC Box PC 620 Manual
Input / Output
A5E00131465-01