ProSoft Technology MVI56E-GSC/ GSCXT - Manual (Page 132)

Reference MVI56E-GSC ♦ CompactLogix or MicroLogix Platform
User Manual Enhanced Generic ASCII Serial Communication Module
Page 132 of 140 ProSoft Technology, Inc.
May 9, 2014
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 132) for a diagram of how to
configure Ethernet cable.
4.10.2 Ethernet Performance
High Ethernet traffic may impact GSC 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
4.10.3 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-