Owner's manual

Troubleshooting
Using Module
Indicators to
Troubleshoot
The count module has indicators which provide indication of module
status. ControlLogix modules use the following:
LED This display: Means Take this action:
OK Steady Green Light The inputs are being multicast None
OK Flashing Green Light The module has passed internal None
diagnostics but is not currently
performing connected communication
OK Flashing Red Light Previously establisched communication Check controller
has timed out and chassis communications
OK Steady Red Light It is likely the module should be replaced See below
Under fault conditions the CTR8 will communicate a particular error via a
LED blink code. A description of the fault conditions and LED blink codes
is listed below...
OK LED SYS LED Fault Status
RED 1 Blink EEPROM seed completed.
RED 2 Blinks– EEPROM seed failed.
RED 3 Blinks EEPROM CRC failed.
RED 4 Blinks Invalid serial number.
RED 5 Blinks Boot code CRC failed.
RED 6 Blinks App CRC failed.
RED 7 Blinks– FPGA configuration fail.
RED 8 Blinks– FPGA scan fail.
RED 9 Blinks Not Applicable
RED 10 Blinks XA Watchdog timeout.
In most instances you may try resetting the module to clear the fault. If you are not successful, contact technical
support as the module may require repair.
Note: In RSLogix5000 the Fault Status can be seen in the “Module Info”
tab of the module’s properties dialog.
Chapter 7