User Manual

Antaira Technologies - Industrial Ethernet Switches

LNX-1002C-SFP Series User Manual V1.2

2.5 Ethernet Ports



RJ-45 Ports

RJ-45 Ports (Auto MDI/MDIX): The RJ-45 ports (LAN 1~8) are auto-sensing for 10Base-T or

100Base-Tx device connections. The Gigabit combo RJ-45 ports (LAN G1~G2) are auto-sensing

for 10Base-T, 100Base-Tx, and 1000Base-T device connections. Auto MDI/MDIX means that the

switch can connect to another switch or workstation without changing the straight-through or

crossover cabling. See the figures below for straight-through and crossover cabling schematics.



RJ-45 Pin Assignments (Table 2.2)

Pin Number Assignment

1 Rx+

2 Rx-

3 Tx+

6 Tx-

All ports on this industrial Ethernet switch support automatic MDI/MDI-X operations. Users can

use straight-through cables (see figure below) for all network connections to PCs, servers, and

other switches or hubs. With straight-through cabling, pins 1, 2, 3, and 6 are at one end of the

cable and are connected straight through to pins 1, 2, 3 and 6 at the other end of the cable. The

table below (Table 2.3) shows the 10BASE-T/100BASE-TX/1000BASE-T MDI and MDI-X port pin

outs.

Note

: The “+” and “-” signs represent the polarity of the wires that make up each wire pair.

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-)

Table 2.2

RJ45 Pin Assignments

Table 2.3 - Ethernet Signal Pin Outs