We are trying to integrate Pi archive data using the AFAttribute search with our reporting system, and are able to retrieve data arriving in PI archive.
One of the use cases (or scenarios) we wish to cover is late arriving data. For example; if the hardware goes does, the the value for the data arrive late to the system, how is it treated?
Does it have two timestamps, aka value.timestamp and value.updatetimestamp OR does it always have one timestamp regardless if the actual value was recorded an hour or so back from a SCADA system?
We are using AFAttribute class and need help is making sure we can detect gaps and cover them up.