8
RJ-45 Pin Assignments
Pin Number
Assignment
1 Tx+
2 Tx-
3 Rx+
6 Rx-
[NOTE]
“+” and “-” signs represent the polarity of the wires that make up each
wire pair.
All ports on this industrial switch support automatic MDI/MDI-X operation, you
can use straight-through cables (See Figure below) for all network connections
to PCs or servers, or to other switches or hubs. In straight-through cable, pins 1,
2, 3, and 6, at one end of the cable, are connected straight through to pins 1, 2,
3 and 6 at the other end of the cable. The table below shows the
10BASE-T/100BASE-TX MDI and MDI-X port pin outs.
Pin MDI-X
Signal Name
MDI Signal Name
1
Receive Data plus (RD+)
Transmit Data plus (TD+)
2
Receive Data minus (RD-)
Transmit Data minus (TD-)
3
Transmit Data plus (TD+)
Receive Data plus (RD+)
6
Transmit Data minus (TD-)
Receive Data minus (RD-)
Straight Through Cable Schematic
