Siemens SIMATIC NET RUGGEDCOM RS940G Equipment Manual page 31

Communication Ports
4.1 Copper Ethernet Ports
Electric shock hazard – risk of serious personal injury and/or equipment
interference
If shielded cables are used, make sure the shielded cables do not form a ground loop
via the shield wire and the RJ45 receptacles at either end. Ground loops can cause
excessive noise and interference, but more importantly, create a potential shock
hazard that can result in serious injury.
Each port features LEDs that indicate the state of the port.
1
1
2
Figure 4.2
The following is the pin-out for the RJ45 male connectors:
8
Figure 4.3
22
WARNING
2
Speed LED
Link/Activity LED
RJ45 and FastConnect RJ45
Port LEDs
1
RJ45 Ethernet Port Pin
Configuration
LED State
Speed Yellow
Off
Link/Activity Yellow (Solid)
Yellow
(Blinking)
Off
Pin Name
10/100Base- 1000Base-
TX
1 RX+
2 RX-
3 TX+ BI_DA+
4 BI_DC+
5
6 TX-
7 BI_DD+
8
Equipment Manual, 10/2023, C79000-G8976-1036-09
Description
The port is
operating at
1000 Mbps
The port is
operating at
10 or 100
Mbps
Link
established
Link activity
No link
detected
Description
TX
BI_DB+ Receive
Data+ or Bi-
Directional
BI_DB- Receive
Data- or Bi-
Directional
Transmit
Data+ or Bi-
Directional
Bi-
Directional
BI_DC- Bi-
Directional
BI_DA- Transmit
Data- or Bi-
Directional
Bi-
Directional
BI_DD- Bi-
Directional
RUGGEDCOM RS940G