hisTotalized

Kind:	Marker

Indicates values which are a continuous stream of totalization and should be read by computing the delta.

From: Structure | Point His

If a point is historized this means that we have a time-series sampling of the point's value over a time range. Historized points are sometimes called logged or trended points. Historized points should be tagged with the his tag.

Historized points can have their time-series data read/write over HTTP via the hisRead and hisWrite operations.

If a point implements the his tag, then it should also implement these tags:

• tz: all historized points must define this tag with their timezone name (must match the point's site timezone)
• hisInterpolate: optionally defined to indicate whether the point is logged by interval of change-of-value
• hisTotalized: optionally defined to indicate a point is collected an ongoing accumulated value

The current status of historization is modeled with:

• hisStatus: ok, down, fault, disabled, pending, syncing, unknown
• hisErr: error message if hisStatus indicated error