Rockwell Automation FactoryTalk Metrics User Guide - Manual (Page 116)

Chapter 3 Collecting Performance Data
You can set the collection rate in the range of 1 to 60 seconds. This
setting does not affect unscheduled part counters, which are
collected as often as they change.
When configuring the setting, take into account the following:
• The lower the number, the more often the data will be
collected from the control system. Using a lower number
enables a greater resolution in data collected from rapid
processes. The part counts will be stored in a record that spans
10 minutes (by default), so a higher resolution in collecting the
part count data does not translate into a higher resolution for
reporting.
• The greater the number, the less often the data will be
collected. Using a higher number can help with server loading
in slower processes. The downside is that collecting part
counts infrequently can lead to count inaccuracies when, for
example, part count registers are reset.
Under System Generated Event Data Summarization, select the
data summarization type that will be used by system-generated
events. The summarization behavior of custom events is defined for
each event.
The following data summarization types are available:
• Scheduled Shift Start
• Scheduled Shift Start and End
System-generated Event
Data Summarization
116 Rockwell Automation Publication PLTMT-UM001M-EN-P-June 2014