Please ensure Javascript is enabled for purposes of website accessibility
Powered by Zoomin Software. For more details please contactZoomin

AVEVA™ Historian

ValueState retrieval query 2: minimum time in state for a single tag

ValueState retrieval query 2: minimum time in state for a single tag

  • Last UpdatedFeb 06, 2025
  • 1 minute read

The following query finds the minimum time-in-state for the Mixer discrete tag for the "on" state. Note that minimum times are returned for each state for both the five-minute phantom cycle before the query start time and for the single retrieval cycle between 10:00 and 10:05.

SELECT DateTime, TagName, vValue, StateTime, wwStateCalc

FROM History

WHERE TagName IN ('Mixer')

AND DateTime >= '2017-12-11 08:00:00'

AND DateTime < '2017-12-12 08:00:00'

AND wwCycleCount= '1'

AND wwRetrievalMode = 'ValueState'

AND wwStateCalc = 'Min'

AND vValue = 1

The results are:

DateTime

TagName

vValue

StateTime

wwStateCalc

2017-12-11 08:00:00.0000000

Mixer

1

35906

Min

TitleResults for “How to create a CRG?”Also Available in