I do not know if I'm right here now, but whatever.

On my screen "PC error" is displayed and nothing else (on a System 3 controller)

The machine was running previously and the back-up battery was replaced about 2 months ago. After switching it on/off, nothing came up anymore. On the NC-PLC coupling, the left LED flashes (how many Hz? No idea). After a couple of times turning it on and off again, it worked for about 5-10 minutes and then the same image came up again. Since this morning, nothing works anymore. Does anyone know that problem and / or has a solution? We will still check the 24V supply and the battery but I do not think that is where the error lies. So please say your opinions and hunches whether they are meaningful or not, I will try everything.... wink.gif

Best regards