The DurationInStateZero Aggregate defined in Table 33 returns the time Duration during the interval that the Variable was in the zero state. The Simple Bounding Values for the interval are used to determine initial value (start time < end time) or ending value (if start time > end time). If one or more raw values are non-Good, they are not included in the Duration, and the Aggregate StatusCode is determined using the StatusCode Calculation (see 5.3) for time based Aggregates. Duration is in milliseconds. Unless otherwise indicated, StatusCodes are Good, Calculated.
Table 33 – DurationInStateZero Aggregate summary
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DurationInStateZero Aggregate Characteristics |
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Type |
Calculated |
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Data Type |
Duration |
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|
Use Bounds |
Simple |
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|
Timestamp |
StartTime |
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|
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StatusCode Calculations |
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Calculation Method |
PercentTime |
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Partial |
Set Sometimes If an interval is not a complete interval |
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|
Calculated |
Set Always |
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Interpolated |
Not Set |
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|
Raw |
Not Set |
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|
Multi Value |
Not Set |
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|
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StatusCode Common Special Cases |
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Before Start of Data |
Bad_NoData |
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After End of Data |
Bad_NoData |
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No Start Bound |
Treat the beginning value as Bad_NoData and compute the Aggregate |
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No End Bound |
Treat the ending value as Bad_NoData and compute the Aggregate |
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Bound Bad |
Use as value and compute the Aggregate as defined |
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Bound Uncertain |
Use as value and compute the Aggregate as defined |
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