Posted 20 Aug 2019 (edited) Hi Have a TSX 47-30 with the memory fault LED "on" after a fault in the main power plant, the PLC have been without power 2 days. I try to find som manuals that shows what to do. Somebody have any info?? Edited 20 Aug 2019 by Victorybear Share this post Link to post Share on other sites
Posted 21 Aug 2019 Probably lost the program, but also watch out for faulty PSU AND lost program. If it was a black tab on memory module that would be a eeprom module but as it is a red one it will drop it's program. Share this post Link to post Share on other sites
Posted 21 Aug 2019 Morning, You have lost the program for sure. There's a battery inside the RAM cartridge memory and if it has never been replaced the program vanish each time you power off the plc. JC Share this post Link to post Share on other sites