Rockwell Automation FactoryTalk Historian SE 3.0 UniInt Interface User Guide - Manual (Page 32)

Historian Point Configuration
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pipc.ini file, which is located in the %windir% directory. If both are specified, the
PIPCSHARE entry takes precedence.
Since the PIHOME directory is typically C:\Program Files\Rockwell
Software\FactoryTalk Historian\PIPC, the full name of the
iorates.dat
file will typically be C:\Program Files\Rockwell
Software\FactoryTalk Historian\PIPC\dat\iorates.dat.
Add a line in the iorates. dat file of the form:
inf001, #
where inf001 is the name of the I/O Rate Tag and # corresponds to the first instance of
the /ec=#
parameter in the startup command file. # can be any number between 1 and
34 or between 51 and 200, inclusive. However, it is best to use an event counter, #, that
is not equal to 1 because 1 is the default event counter for UniInt-based interfaces. To
specify additional rate counters for additional copies of the interface, create additional
I/O Rate tags and additional entries in the iorates.dat file. The event counter,
/ec=#, should be unique for each copy of the interface.
2. Set the /ec=# parameter on the startup command file of the interface to match the event
counter in the iorates.dat file.
3. The interface must be stopped and restarted in order for the I/O Rate tag to take effect.
I/O Rates will not be written to the tag until 10 minutes after the interface is started. A
message in the
pipc.log file will indicate if the I/O Rate tag was properly configured
and loaded.
Performance Points
Performance points can be configured to monitor the amount of time in seconds that it takes
an interface to complete a scan for a particular scan class. The closer the scan time is to 0
seconds, the better the performance. The scan time is recorded to millisecond resolution.
Several other measurements concerning the performance of the interface can be monitored
with performance points..
Performance point configuration is the same on all operating system platforms. Performance
points are configured as follows.
1. Set the extended descriptor to:
PERFORMANCE_POINT
or to:
PERFORMANCE_POINT=interface_id
where interface_id corresponds to the identifier that is specified with the
/id parameter on the startup command-line of the interface. The character string
PERFORMANCE_POINT is case insenstive. The interface_id does not need to be