An introduction to troubleshooting faults
A fault is an error state in your controller that will prevent it from executing normally. It must be resolved in order for the controller to resume its normal execution. There are many reasons that would cause an automation process to stop. There are a few ways of confirming that a controller fault is the cause of a process upset:
An operator may notice a controller fault is being indicated from an HMI display
The fault light is lit on your controller or a fault code is being listed on the scrolling status display on the controller
We can also see that fault indicated when going online with our controller from RSLogix5000 / Logix Designer
A major fault as seen from the Controller Properties window
Troubleshooting faults in Logix is the process of locating and resolving problems encountered during the execution of a project on a controller. Access to piping and instrumentation diagram (P&ID) drawings, cause and effect diagrams, wiring drawings, and...