Rockwell Automation FactoryTalk Metrics User Guide - Manual (Page 264)

Appendix A Report Data Sources
reports by shift or by part number. System-generated events are
summarized (the current Event History record is closed and a new
record is created in the database) based on the event data
summarization type that is specified.
Unlike Workcell History records, Event History records are not
created on a regular, predictable basis and can span any amount of
time. An Event History record is created when an event occurs and
is closed when that event ends, which in some cases may be hours
later. Even though the time span of an Event History record can be
quite long, its contents are updated every 10 seconds. Because Event
records can have very different time spans, reporting on Event
records can bring some unexpected results. Remember that reports
always include entire records, and cannot be run on portions of
records. You can mitigate this effect by ensuring that user-defined
events have similar data summarization types. Refer to the
Configuration Console online help for detailed information on
events and event data summarization types.
NOTE
In FactoryTalk Metrics you can disable event data summarization for a
user-defined event. Use this features with caution though, because it
could result in creating event records that are difficult to report on.
The FactoryTalk Metrics Machine State Data report data source is
based on the OEEQStateData view in the RSBizWare database.
This report data source contains historical machine state data. Each
record contains the following summarized information for a single
occurrence of a machine state for a configured workcell:
• Activity area information.
• Machine state ID and description.
• Start and end times for the record, along with duration of the
record.
Machine State Data
264 Rockwell Automation Publication PLTMT-UM001M-EN-P-June 2014