chadhoot78
Member
Hi all. I have a Control Logix system controlling our coal conveying system. Each conveyor and piece of equipment has a separate routing in the program,however, the conveyor/machine status and alarming is combined into 3 separate status routines. They are using JSR's with parameters to jump out of a conveyor routine, check for faults and give status updates to the HMI, then jump back into the conveyor routine and finish the scan. After studying the logic, I understand how it works, and why they wrote it (I wouldn't do it), but I'm wondering how to troubleshoot it. While in a status routine, every bit and timer is constantly changing states and values. If I'm trying to see what or why a particular conveyor is shutting down or alarming, how is the best way to view it alone.