tjice

I had a similar problem with a system installed in the spring of '01. About 6 months later, I get all kinds of calls about the system not working. Since it was a coal handling system at a power plant, it was urgent (isn't it always?). The ControlLogix was a 5555 running firmware 7. It wasn't that difficult to fix, just download the program again and away we go. A call to the trusty AB tech support didn't really reveal what could have caused it since the program had already been reloaded. There was no motion control and it was a straight forward ladder logic program. We eventually flashed up to firmware v8 and haven't had any problems since. If this should happen to anyone again I would definitely reccomend trying to contact tech support or getting online (if even possible) to try to nail down an error code or something. The tech support rep told me that since the program had been reloaded, there was nothing he could find out. tj