I need to get the time to totalize a knowed value of a certain attribute, from a specific datetime.
For example, I want to know the time passed to totalize 1000L of flow rate L/s, knowing of the initial time is 2018-09-07 14:30:00.
There is a way to do that in PI Web API and without create new PIPoints?
I try to build a calculation request with no success.
https://<WEBAPISERVER>/piwebapi/calculation/summary?webid=<WEBID>&starttime=2018-09-07T4:30:00.000Z&endtime=*&expression=TimeLE('<ATTRIBUTEPAHT>', '2018-09-07T14:30:00.000Z', '*', 1000)&summarytype=Total