Prosoft-technology MVI56E-DNPNET Manual do Utilizador descarregar pdf (Página 120)

Contents MVI56E-DNPNET ♦ ControlLogix Platform

User Manual DNPNET Ethernet Client/Server Communication Module

Page 120 of 140 ProSoft Technology, Inc.

February 13, 2015

4.5 Cable Connections

4.5.1 Ethernet 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 ports on the module are Auto-Sensing. You can use either a standard Ethernet

straight-through cable or a crossover cable when connecting the module to an Ethernet hub,

a 10/100 Base-T Ethernet switch, or directly to a PC. The module will detect the cable type

and use the appropriate pins to send and receive Ethernet signals.

Ethernet cabling is like U.S. telephone cables, except that it has eight conductors. Some

hubs have one input that can accept either a straight-through or crossover cable, depending

on a switch position. In this case, you must ensure that the switch position and cable type

agree.

Refer to Ethernet Cable Configuration (page 120) for a diagram of how to configure Ethernet

cable.

4.5.2 Ethernet Cable Configuration

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-

4.5.3 Ethernet Performance

High Ethernet traffic may impact DNPNET performance, consider one of these options:

 Use managed switches to reduce traffic coming to module port

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