Hey hows everyone? Ive been in industrial maintenance for almost 25 years as a mechanical tech. Recently I took an interest in working with our PLCs. Along with schooling, I have a good mentor. My question is, today I got to deal with a PLC fault on my own. It was an AB SLC 5/03, and the fault was 0002h. It seemed like the processor couldnt see the #12 module but knew it needed it. I removed the #12 module and reinserted it and downloaded the I/O config. The processor fault was cleared and the line started as usual. Do I need to get ready to replace this module or rack or is this common?