Communication Ports
3.1 Copper Ethernet Ports
WARNING
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.
NOTICE
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.
LED
State
Description
Yellow
The port is operating at 100
Mbps
100
Off
The port is operating at 10 Mbps
Yellow (Solid)
Link established
Yellow (Blinking)
Link activity
Link/Act
Off
No link detected
Pin-Out
The following is the pin-out for the RJ45 male connectors:
8
1
Figure 3.2
RJ45 Ethernet Port Pin
Configuration
Pin
Name
Description
1
RX+
Receive Data+
2
RX-
Receive Data-
3
TX+
Transmit Data+
4
Reserved (Do Not Connect)
5
Reserved (Do Not Connect)
6
TX-
Transmit Data-
7
Reserved (Do Not Connect)
8
Reserved (Do Not Connect)
Specifications
For specifications on the available copper Ethernet ports, refer to
Port Specifications (Page 17)"
14
RUGGEDCOM RMC40
Installation Manual, 04/2021, C79000-G8976-1009-09
