Posted 27 Aug 2020 Hello all, I have an Micrologix 1200 with 3 1762-IF 4 modules. The 1200 PLC recently failed and I put a new one in and loaded the same running program. When going to run, it faulted saying the program was set for modules not found in the PLC or modules were found that were not configured in the program. When I go to IO configuration in RS500, there all in there, but when I do the "Read IO Configuration" button, it comes up empty, it doesn't find the connected IF-4's. I am suspecting maybe the cards got damaged too? Or am I missing something? Share this post Link to post Share on other sites
Posted 28 Aug 2020 Check and double check the flat ribbon cable between the controller and modules. Share this post Link to post Share on other sites