ProSoft Technology MVI56E-MNET/MNETXT - Manual (Page 90)

Diagnostics and Troubleshooting MVI56E-MNET / MNETXT ♦ ControlLogix Platform
User Manual Modbus TCP/IP Interface Module
Page 90 of 181 ProSoft Technology, Inc.
April 23, 2014
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-MNET 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