CollinRudy
Member
Hello all, fairly new technician and first post on here but wanted some feedback and a better understanding of memory module and a fault I had on a SLC 5/03 yesterday.
So I got to the railyard and they couldn't fuel on one of the skids. Power had gone out the night before but they had a battery back-up to keep the PLC powered. Not sure how long power was out and if the battery back-up stayed on or ended up dying after a few hours.
I get into the panel and the PLC was flashing the fault light. So first tried cycling power, didn't work. Next I did the run-program-run key switch trick, still didn't work. So I got online with it and looked into the fault. The error description read "The required memory module is absent or S:1/10 or S:1/11 is not set as required by the program.".
I moved to the processor status data files S2- memory module folder. The S:1/10 Load Memory Module On Memory Error box was at 1. I set it back to 0 and the PLC would now go into run mode. I cycled power and still would was working. Skid is operational again, but I leave confused as to what this exactly means??? Any info helps, thanks everyone!
So I got to the railyard and they couldn't fuel on one of the skids. Power had gone out the night before but they had a battery back-up to keep the PLC powered. Not sure how long power was out and if the battery back-up stayed on or ended up dying after a few hours.
I get into the panel and the PLC was flashing the fault light. So first tried cycling power, didn't work. Next I did the run-program-run key switch trick, still didn't work. So I got online with it and looked into the fault. The error description read "The required memory module is absent or S:1/10 or S:1/11 is not set as required by the program.".
I moved to the processor status data files S2- memory module folder. The S:1/10 Load Memory Module On Memory Error box was at 1. I set it back to 0 and the PLC would now go into run mode. I cycled power and still would was working. Skid is operational again, but I leave confused as to what this exactly means??? Any info helps, thanks everyone!