tgaljar
Member
Hi,
Just one question about SLC500 memory. Few days ago I had long power loss in a plant and my PLCs were ofline for almost 1 hour. When a power came back I checked program in one SLC with last working copy and a program was not complete some of the rungs and symbols were missing. In an offline mode rungs were there but when I passed to online mode Rslogix deleted some of them. And of course program was not working correctly. How is that possible?!? PLC has a battery properly connected. Before power loss I made some online changes and I saved program, but didn’t make complete download to PLC.
Does anyone have any clues?
Just one question about SLC500 memory. Few days ago I had long power loss in a plant and my PLCs were ofline for almost 1 hour. When a power came back I checked program in one SLC with last working copy and a program was not complete some of the rungs and symbols were missing. In an offline mode rungs were there but when I passed to online mode Rslogix deleted some of them. And of course program was not working correctly. How is that possible?!? PLC has a battery properly connected. Before power loss I made some online changes and I saved program, but didn’t make complete download to PLC.
Does anyone have any clues?