We have a customer with a strange issue, they were having slowdowns of their device and did a firmware update. After the update, the device started operating normally, but after approx. 2 weeks the device deleted the view on screen. The customer has connected to the device via FTP and confirmed the entire Viewon folder and files were deleted.
Their configuration has approx. 300 tags, mostly Modbus and memory tags, all the tag values were maintained.
The customer re-uploaded the viewon webpage to the device, and again approx. 2 weeks later the screen was deleted again. I believe this event has occurred another two or three times. The customer states that they have had this unit in operation for years and have not had the current issues.
Do you have any suggestions? If needed I have a backup of the device that has been having issues.