Learn about output time stamps for analyses
- Last UpdatedJan 08, 2025
- 1 minute read
- PI System
- PI Server 2024 R2
- PI Server
For any scheduled analysis, the default time stamp for output values is the trigger time. For periodic scheduling, the trigger time is the scheduled evaluation time, and for event-triggered scheduling, the trigger time is the time that a specified attribute changes values.
You can specify the time stamp of analysis output values. By specifying an output time stamp, you can:
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Produce results that are time-stamped at a specified offset from the trigger time.
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Produce results that are time-stamped at a particular time each day, regardless of when the analysis is actually evaluated. For example, you can ensure a 6:00 p.m. time stamp for the output of an analysis that calculates results for a daily production shift ending at 6:00 p.m., even if the analysis is not actually evaluated until 10:00 p.m.
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Repeatedly evaluate an analysis to calculate a forecast value for a particular date and time, as input conditions change. The results of each evaluation have the same timestamp: the analysis output values reflect results from the most recent evaluation.