Rockwell Automation 1756-XXXX ControlLogix Analog I/O Modules - Manual (Page 274)

274 Publication 1756-UM009C-EN-P - December 2010
Chapter 12 Troubleshoot Your Module
Status Indicators for Output Modules
The illustration and table show the status indicators used with analog
output modules.
Status Indicator Display Description Action
OK Steady green light The outputs are in a normal
operating state in Run mode. None
OK Flashing green light Either:
• the module has passed internal
diagnostics and is not
actively controlled
• a connection is open and the
controller is in Program mode.
None
OK Flashing red light Previously established
communication has timed out. Check controller and
chassis communication
OK Steady red light The module must be replaced. Replace the module.
CAL Flashing green light The module is in Calibration mode. Finish calibration
20965-M
ANALOG OUTPUT
CAL
OK