Rockwell Automation FactoryTalk Historian SE 3.0 Live Data Interface User Guide - Manual (Page 46)

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FactoryTalk Historian Live Data Interface User Guide
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Parameter Description
/maxstoptime=stopti
me Default = 120 seconds.
When an interface receives a signal from the operating system to shut
down, it must perform a number of cleanup functions. If for some
reason the execution of these functions takes longer time than the
stop time, the interface will shut down without finishing these
functions.
/sio Default = send initial outputs.
The /sio parameter stands for suppress initial outputs. The parameter
applies only to interfaces, such as the FTLD, that support outputs. If
the /sio parameter is not specified, the FTLD Interface will behave in
the following manner:
When the FTLD Interface is started, it determines the current
Snapshot value of each output tag. Next, the FTLD interface writes
this value to each output tag. In addition, whenever an individual
output tag is edited while the FTLD Interface is running, it will write
the current Snapshot value to the edited output tag.
This behavior is suppressed if the /sio parameter is specified on the
command line. That is, outputs will not be written when the FTLD
Interface starts or when an output tag is edited. In other words,
when the /sio parameter is specified, outputs will only be written
when they are explicitly triggered.
/perf=interval Default = 8 hours
When the percentage of scans that a UniInt-based interface performs
on time drops below 95%, UniInt will write the performance
summaries for each scan class into the PIPC.log file.
For example, if /perf=0.025, UniInt will write performance summaries
every 90 seconds if the percentage of on-time scans is below 95%.
The minimum time between summaries is 60 seconds. Setting
/perf=0 disables summaries.
If the /perf parameter is omitted, then by default, every 8 hours,
UniInt checks whether summaries are needed.
If the inputs for the interface are unsolicited, then performance
summaries should be disabled by setting /perf=0 because
performance summaries are meaningless for unsolicited input points.