
MVI56E-MNETCR ♦ ControlLogix Platform Diagnostics and Troubleshooting
Modbus TCP/IP Multi Client Enhanced Communications Module for Remote Chassis User Manual
ProSoft Technology, Inc. Page 81 of 159
June 14, 2011
4.1.2 Ethernet LED Indicators
The Ethernet LEDs indicate the module's Ethernet port status as follows:
LED State Description
Data OFF Ethernet connected at 10Mbps duplex speed
AMBER Solid Ethernet connected at 100Mbps duplex speed
Link OFF No physical network connection is detected. No Ethernet
communication is possible. Check wiring and cables.
GREEN Solid
or Blinking
Physical network connection detected. This LED must be ON solid
for Ethernet communication to be possible.
4.1.3 Non-Scrolling LED Status Indicators
The non-scrolling LEDs indicate the module’s operating status as follows:
LED Label Color Status Indication
APP Red or
Green
OFF The module is not receiving adequate power or is not securely
plugged into the rack. May also be OFF during configuration
download.
GREEN The MVI56E-MNETCR is working normally.
RED The most common cause is that the module has detected a
communication error during operation of an application port.
The following conditions may also cause a RED LED:
The firmware is initializing during startup
The firmware detects an on-board hardware problem
during startup
Failure of application port hardware during startup
The module is shutting down
The module is rebooting due to a ColdBoot or WarmBoot
request from the ladder logic or Debug Menu
OK Red or
Green
OFF The module is not receiving adequate power or is not securely
plugged into the rack.
GREEN The module is operating normally.
RED The module has detected an internal error or is being
initialized. If the LED remains RED for over 10 seconds, the
module is not working. Remove it from the rack and re-insert it
to restart its internal program.
ERR Not Used
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