7
Ports
RJ-45 ports
The UTP (RJ-45) Fast Ethernet ports will auto-sense 10Base-T or 100Base-TX
connections. Auto MDI/MDIX means that the media converter can connect to another
switch or workstation without changing straight through or crossover cabling. See the
figures below for straight through and crossover cable schematic.
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 media converter supports automatic MDI/MDI-X operation,
user can use straight-through cables (See figure below) for all network connections to
PCs/servers, or to switches/hubs. For 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-)
