AMX NetLinx Integrated Controller NI-3100 - Manual (Page 33)

Connections and Wiring
29 NI-2100, NI-3100, NI-4100 Hardware Reference Guide
Ethernet/RJ-45 Port: Connections and Wiring
The following table lists the pinouts, signals, and pairing for the Ethernet connector.
FIG. 21 diagrams the RJ-45 pinouts and signals for the Ethernet RJ-45 connector and cable.
Ethernet LEDs
NI-x100 Controllers feature an Auto MDI/MDI-X Ethernet port. This provides the
option of using either a standard (straight through), or a crossover Ethernet cable to
communicate with a PC - both cable types will work.
Ethernet RJ-45 Pinouts and Signals
Pin Signals Connections Pairing Color
1 TX + 1 --------- 1 1 --------- 2 Orange-White
2 TX - 2 --------- 2 Orange
3 RX + 3 --------- 3 3 --------- 6 Green-White
4 no connection 4 --------- 4 Blue
5 no connection 5 --------- 5 Blue-White
6 RX - 6 --------- 6 Green
7 no connection 7 --------- 7 Brown-White
8 no connection 8 --------- 8 Brown
FIG. 21 RJ-45 wiring diagram
FIG. 22 Ethernet LEDs
SPD - Speed LED
connection speed is 100 Mbps
and turns Off when speed is
lights (yellow) when the
L/A - Link/Activity LED
lights (green) when the
Ethernet cables are
connected and terminated
10 Mbps. correctly.