Ethernet Port Connection; Ethernet Cable Specifications - ProSoft Technology CompactLogix MVI69E-MBS User Manual

MVI69E-MBS ♦ CompactLogix™ Platform
Modbus Serial Enhanced Communication Module
8.5

Ethernet Port Connection

8.5.1 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 port or 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 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, you must ensure that the switch position
and cable type agree.
Refer to Ethernet Cable Configuration (page 153) for a diagram of how to configure
Ethernet cable.
Ethernet Cable Configuration
Note: The standard connector view shown is color-coded for a straight-through cable.
Crossover cable
RJ-45 PIN
1 Rx+
2 Rx-
3 Tx+
6 Tx-
ProSoft Technology, Inc.
RJ-45 PIN
3 Tx+
6 Tx-
1 Rx+
2 Rx-
Straight- through cable
RJ-45 PIN
RJ-45 PIN
1 Tx+
1 Rx+
2 Tx-
2 Rx-
3 Rx+
3 Tx+
6 Rx-
6 Tx-
Reference
User Manual
Page 153 of 159