I have a Flexy 205 with ~15 tags set up for historical logging. The tags are generally behaving as expected; however, every so often (usually once every few minutes) one timestamp of data is missing. The value is missing for all tags and does not show up in any database (variable history, historical graph, export block results, DataMailbox). The Flexy is not running any scripts and I have observed this behavior on multiple Flexys across multiple sites.
See screenshot below showing historical log of tag values with row after missing timestamp highlighted as an example. The tags are set to log historically every second. This is how the historical values appear in any view for any tag – one time stamp worth of data completely missing every few minutes.
Why is this happening? How do I fix this?
Thanks for the help!