Prosoft-technology MVI69L-MBS User Manual download pdf (Page 144)

Reference MVI69L-MBS ♦ CompactLogix Platform

User Manual Communication Module

Page 144 of 154 ProSoft Technology, Inc.

January 6, 2014

7.5 Ethernet Port Connection

7.5.1 Cable Specifications

The recommended cable is Category 5 or better. A Category 5 cable has four

twisted pairs of wires, which are color-coded and cannot be swapped. The

module uses only two of the four pairs.

The Ethernet port on the module is Auto-Sensing. A standard Ethernet straight-

through cable or a crossover cable can be used when connecting the module to

an Ethernet hub, a 10/100 Base-T Ethernet switch, or directly to a PC. The

module detects the cable type and uses the appropriate pins to send and receive

Ethernet signals.

Some hubs have one input that can accept either a straight-through or crossover

cable, depending on a switch position. In this case, ensure the switch position

and cable type agree.

Note: The standard connector view shown is color-coded for a straight-through cable.

Crossover cable

Straight- through cable

RJ-45 PIN

1 Rx+

3 Tx+

2 Rx-

6 Tx-

3 Tx+

1 Rx+

6 Tx-

2 Rx-

RJ-45 PIN

1 Rx+

1 Tx+

2 Rx-

2 Tx-

3 Tx+

3 Rx+

6 Tx-

6 Rx-

7.5.2 Ethernet Performance

Ethernet performance on the MVI69L-MBS module can affect the operation of

the application port in the following ways.

 Accessing the web interface (refreshing the page, downloading files, and so

on) may affect MBS performance

 High Ethernet traffic may impact MBS performance (consider using managed

switches to reduce traffic coming to module port).

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