History is not showing Tag Quality Correctly for Float Value

I am using History Logging for the Float Value. The values are logging correctly. But its Quality is always showing 192 irrespective with bad quality. For Digital Signals, the signal logs with bad quality, For Analog signals , the signal is not logging at all. Why there are a difference between those?


I have seen this also. It appears that you are logging on change, which apparently only applies to change of value. If the tag quality isn’t good, the stale data won’t change. The max time between samples will cause the stale data to be logged until quality is good again and the value changes. We have set an alarm to detect if the device connection providing the tag faults.