Rockwell Automation FactoryTalk Metrics User Guide - Manual (Page 26)

Chapter 3 Collecting Performance Data
disk when data collection started) processed as current data values.
This approach could lead to inaccurate count information being
recorded in the event of a part count reset in the control system. The
most serious effect of this issue was observed when the counter used
in a FactoryTalk Metrics part count formula was reset, and the
resulting formula evaluated to a negative number. The change
required that the initial data used as a baseline for calculations all
come from the same time period. In certain environments with
continuous counters that do not get reset, this change could result in
the loss of count data that was collected erroneously in previous
versions. The data collected this way can account for part counts
that were produced since the last time the Metrics server was
running.
In order to accommodate customers that found this data useful, the
Metrics Server Manager settings file
(PlantMetricsServerSettings.xml) can be configured so that it
forces the Metrics Server Manager to initialize its data in the pre-7.0
manner.
The file is located in the <ProgramFiles>\Rockwell
Software\RSBizWare folder. It contains the
InitializeFromSingleTimestamp
tag. The tag is set by default to
1
.
The default value causes the Metrics Server Manager to process data
in the standard way to prevent the inclusion of older data. If you
change the value to
0
, the Metrics Server Manager will process data
regardless of its timestamp. This change may be appropriate for
some production environments, but in others may lead to incorrect
values being logged for count information.
For more information on the Metrics Server Manager settings file,
refer to "The Metrics Server Manager settings file" in the
RSBizWare
Administration Guide.
26 Rockwell Automation Publication PLTMT-UM001M-EN-P-June 2014