Siemens SIMATIC NET RUGGEDCOM RMC40 Installation Manual page 23

Communication Ports
3.1 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.
For substation applications, do not use the copper Ethernet port to interface with
field devices across distances that could produce high levels of ground potential rise
(i.e. greater than 2500 V) during line-to-ground fault conditions.
LEDs
Each port features a 100 and Link/Act LED that indicates the state of the port.
100
Link/Act
Pin-Out
The following is the pin-out for the RJ45 male connectors:
8
Figure 3.2
Specifications
For specifications on the available copper Ethernet ports, refer to
Port Specifications" (Page
14
WARNING
NOTICE
LED
1
RJ45 Ethernet Port Pin
Configuration
State
Yellow
Off
Yellow (Solid)
Yellow (Blinking)
Off
17).
Description
The port is operating at 100
Mbps
The port is operating at 10 Mbps
Link established
Link activity
No link detected
Pin Name
1 RX+
2 RX-
3 TX+
4 Reserved (Do Not Connect)
5 Reserved (Do Not Connect)
6 TX-
7 Reserved (Do Not Connect)
8 Reserved (Do Not Connect)
"Copper Ethernet
Installation Manual, 11/2022, C79000-G8976-1009-10
Description
Receive Data+
Receive Data-
Transmit Data+
Transmit Data-
RUGGEDCOM RMC40