Spectrum Controls 1756sc-IF8u - Manual (Page 73)

Troubleshooting
Using Module
Indicators to
Troubleshoot
The universal analog I/O 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
CAL Flashing Green Light The module is in calibration mode None
Under fault conditions the IF8u 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 CAL LED Fault Status
RED 3 Blinks Major Nonrecoverable
EEPROM Fault. Send in Module for Repair
RED 4 Blinks Major Nonrecoverable
Serial Number not programmed. Send in Module for Repair
RED 5 Blinks Major Nonrecoverable
Boot code section has failed the CRC check. Send in Module for Repair
RED 6 Blinks Major Recoverable
Application code section has failed the CRC check. Try re-programming the module firmware. If condition
persists send module in for repair.
RED 9 Blinks Major Nonrecoverable
Module has lost it’s calibration data. Send in Module for repair.
RED 10 Blinks Major Recoverable
Module’s firmware watchdog timer has timed out. Try resetting module. If condition persists send
module in for repair.
RED 11 Blinks Major Nonrecoverable
Wrong application installed. Send in Module for Repair.
RED 12 Blinks Major Recoverable
ADC communication fault. Try resetting module. If condition persists send module in for repair.
Note: In RSLogix5000 the Fault Status can be seen in the “Module Info”
tab of the module’s properties dialog.
Chapter 7