I have a CHNC with a Siemens 810T control that gets corrupted parameters every time I power if off and on again. Because of this issue, I have gotten very proficient at re-commissioning the control, and once done, it works fine until the power is cycled.
The backup battery appears to be recent, and measures 3.64v, so I think its good. Also, the part programs don't appear to get lost, only the NC and PLC commissioning data.
Any thoughts what it could be? Has anyone else ever seen anything like it?
Brian