Siemens Simatic box pc 627b - Page 124

Detailed descriptions
16.1 Motherboard
SIMATIC Box PC 627
16-6 Operating Instructions, Release 05/2006, A5E00362052-03
Ethernet RJ45 connection, X500, X501
Ethernet RJ45 connection
PinNo. Abbreviation Meaning Input /Output
1 TD+ Transmitted data Output
2 TD- Transmitted data Output
3 RD+ Received data Input
4, 5
1
SYMR Internal 75-Ohm terminating resistor –
6 RD- Received data Input
7, 8
1
SYMT Internal 75-Ohm terminating resistor –
S Shield –
LED green Off: 10 Mbps
Lit: 100 Mbps
–
LED yellow Lit: Active connection
(e.g. to a hub)
Flashing: Activity
–
1
is not necessary for data transfer