Rockwell-automation FactoryTalk Historian SE ProcessBook 3.2 User Guid Manual de usuario Pagina 341

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11 System Administrator Notes
323
Trend Definition Section
Trend initializations. Possible entries:
Autoscale
1=yes
0=no
Value/Description/Plot
Title/Grids/Scale Inside
Axis/Tag Name/Eng
Units/Correlation
Coefficient/Linear
Correlation/Connecting
Lines
1=enable feature
0=disable feature
Background Null
1=sets to have no background color.
0=have background color specified under Elements.
Start Time/End Time
Default start and end time range (must be a valid FactoryTalk
Historian string)
UpdateTimeRange
Maximum time period, in seconds, to support updates. The
default is 604,800 seconds, equal to 7 days. If the time range
is greater than this value, the trend does not update
automatically even when the end time is '*'. Note that the
maximum update range is different from the update rate,
which is the frequency with which the computer displays new
data from the server, typically every 5 seconds.
MarkerWarning
ProcessBook has the option of showing a warning dialog box
whenever a trend has found too many marker values to
display them on the plot.
1=enables this option (default).
0=disables this option.
RequeryThresholdFactor
Base the max values for each trace on a "factor" of the
interval.
RequeryHoldoffTimeout
Minimum time for re-query since last requery in milliseconds.
Max Traces
The maximum number of traces per trend.
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