Manual

Publication 1756-UM009C-EN-P - December 2010 273
Chapter 12
Troubleshoot Your Module
Introduction
Each ControlLogix analog I/O module has status indicators that display
module status. This chapter describes the status indicators, located on the
front of a module, and how to use these visual signals to troubleshoot
anomalies.
Status indicators show the I/O module state (green), or fault (red).
Status Indicators for Input Modules
The illustration and table show the status indicators used with analog
input modules.
Topic Page
Status Indicators for Input Modules 273
Status Indicators for Output Modules 274
Use RSLogix 5000 Software for Troubleshooting 275
Status Indicator Display Description Action
OK Steady green light The inputs are being multicast and in
normal operating state.
None
OK Flashing green light The module has passed internal
diagnostics but is not currently
performing connected communication.
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
20962-M
ANALOG INPUT
CAL
OK