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NetLinx Master Cards and Modules
ICSHub RJ-45 Connections/Wiring
The two ICSHub RJ-45 connectors on the rear of the Master Card provide data to other Hubs
connected to a downstream system. Hubs allow you to connect multiple NetLinx Hubs together in a
daisy-chain configuration. Connect the OUT port to the IN port on the second or downstream
NetLinx hub. The following table describes the pinout/signal information.
! Use CAT5 cables for all ICSHub connections.
! Do not connect the last hub in a daisy-chain configuration to the first hub.
Ethernet 10/100 Base-T RJ-45 Connections/Wiring
The following table describes the RJ-45 pinouts, signals and pairing for the Ethernet 10/100 Base-T
RJ-45 connector and cable.
ISCHub Pinouts and Signals
IN Port OUT Port
Pin Signal Pin Signal
1TX -1 RX +
2TX +2 RX -
7RX -7 TX +
8RX +8 TX -
Ethernet RJ-45 Pinouts and Signals
Pin Signals Connections Pairing
1 TX + 1 --------- 1 1 --------- 2
2 TX - 2 --------- 2
3 RX + 3 --------- 3 3 --------- 6
4 no connection 4 --------- 4
5 no connection 5 --------- 5
6 RX - 6 --------- 6
7 no connection 7 --------- 7
8 no connection 8 --------- 8
RJ-45 plug
RJ-45 plug
RJ-45 plug
RJ-45 plug