6
Ports
RJ-45 ports
The Fast Ethernet ports (RJ-45) will auto-sense for 10Base-T or 100Base-TX
connections. Auto MDI/MDI-X means that the switch can connect to another switch or
workstation without changing straight-through or crossover cabling. Please refer to
Table-2
for RJ-45 pin assignment.
Pin Number
Assignment
1 Tx+
2 Tx-
3 Rx+
6 Rx-
Table-2: RJ-45 Pin Assignment
Note
“+” and “-” signs represent the polarity of the wires that make up each wire
pair.
All ports on this industrial switch supports automatic MDI/MDI-X operation, users can
use straight-through cables (See figures below) for all network connections to PCs or
Servers, or to other switches/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.
Table-3
shows the 10BASE-T/100BASE-TX MDI and MDI-X port pin-outs.
Pin
MDI-X Signal
MDI Signal
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-)
Table-3: MDI/MDI-X Port Pin-outs
