ProSoft Technology MVI56E-MCM/MCMXT - Manual (Page 139)

MVI56E-MCM ♦ ControlLogix Platform Reference
Modbus Communication Module User Manual
ProSoft Technology, Inc. Page 139 of 199
June 18, 2014
Refer to Ethernet Cable Configuration (page 139) for a diagram of how to
configure Ethernet cable.
6.3.2 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 RJ-45 PIN
1 Rx+ 3 Tx+
2 Rx- 6 Tx-
3 Tx+ 1 Rx+
6 Tx- 2 Rx-
RJ-45 PIN RJ-45 PIN
1 Rx+ 1 Tx+
2 Rx- 2 Tx-
3 Tx+ 3 Rx+
6 Tx- 6 Rx-
6.3.3 Ethernet Performance
High Ethernet traffic may impact MCM performance, consider one of these
options:
 Use managed switches to reduce traffic coming to module port
 Use CIPconnect for these applications and disconnect the module Ethernet
port from the network