5.4.3.27 Delta

The Delta Aggregate defined in Table 75 retrieves the difference between the earliest and latest Good raw values in the interval. The Aggregate is negative if the latest value is less than the earliest value. The status is Uncertain_DataSubNormal if non-Good values are skipped while looking for the first or last values. The status is Good otherwise. The status is Bad_NoData if no Good raw values exist.

Table 75 – Delta Aggregate summary
Delta Aggregate Characteristics
TypeCalculated
Data TypeSame as Source
Use BoundsNone
TimestampStartTime
StatusCode Calculations
Calculation Method

Custom

Uncertain_DataSubNormal if non-Good values are skipped while looking for the first or last values

Partial

Set Sometimes

If an interval is not a complete interval

Calculated

Set Always

InterpolatedNot Set
RawNot Set
Multi ValueNot Set
StatusCode Common Special Cases
Before Start of DataBad_NoData
After End of DataBad_NoData
No Start BoundDoes not apply
No End BoundDoes not apply
Bound Bad Does not apply
Bound UncertainDoes not apply