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Chapter 3
Communication 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.
IMPORTANT!
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 Speed and Link LED that indicates the state of the port.
LED
Speed
Link
Pin-Out
The following is the pin-out for the RJ45 male connectors:
8
Figure 8: RJ45 Ethernet Port Pin Configuration
Specifications
For specifications on the available copper Ethernet ports, refer to
Specifications"
.
14
State
Yellow
Off
Yellow (Solid)
Yellow (Blinking)
Off
1
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)
Section 4.2, "Copper Ethernet Port
RUGGEDCOM RMC
Installation Guide
Description
Receive Data+
Receive Data-
Transmit Data+
Transmit Data-
Copper Ethernet Ports
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