Siemens PC 670 - Manual (Page 149)

Hardware Information Release 04/02
7-17 Panel PC 670 Computing Unit, Equipment Manual
Ethernet RJ45 connection
The Ethernet-RJ45 interface of the computing unit is assigned as follows:
LED green LED yellow
1 8
Figure 7-8 Ethernet port
Pin
No. Short Name Meaning Input/Output
1 TD+ Transmission data Output
2 TD– Transmission data Output
3 RD+ Received data Input
4, 5 * SYMR Internal 75
Ω
output -
6 Received data Input
7, 8 * SYMT Internal 75
Ω
output -
S Shield -
LED green Connection -
LED yellow Activity -
* Not required for data transmission