Rockwell Automation 1756-XXXX ControlLogix Digital I/O Modules - Manual (Page 177)

Rockwell Automation Publication 1756-UM058G-EN-P - November 2012 177
Appendix
A
Troubleshoot Your Module
This appendix describes the status indicators on the ControlLogix digital
modules and how to use them to troubleshoot the module. Each I/O module has
status indicators located on the front of the module.
Status Indicators
for Input Modules ControlLogix input modules support the status indicators described in Table 31
below. The available status indicators vary by module catalog number, as shown
in
Figure 21 on page 178 .
Topic Page
Status Indicators for Input Modules 177
Status Indicators for Output Modules 178
Use RSLogix 5000 Software for Troubleshooting 180
Table 31 - Status Indicators for Input Modules
Indicator Status Description
OK Status Steady green The inputs are being multicast and in a normal operating state.
Flashing green The module has passed internal diagnostics, but is not
multicasting inputs or is inhibited.
Uninhibit the connection or establish a connection to enable
communication to the module.
Steady red The module must be replaced.
Flashing red Previously established communication has timed out.
Check the controller and chassis communication.
I/O Status Yellow The input is On.
Fault Status Red The input has encountered a fault.
Check the input point at the controller.