Rockwell Automation FactoryTalk Historian SE ProcessBook 3.2 User Guide - Manual (Page 270)

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FactoryTalk Historian ProcessBook User Guide
252
3. Review the following for additional information:
PI Server Select a FactoryTalk Historian server.
Name Enter a name for your data set. The name must be unique for
the current .piw or .pdi file.
PI tag or
Expression
Enter a tag name or a FactoryTalk Historian expression. Use
the Tag Search (page 231) button to search for FactoryTalk
Historian tags. If you choose to type an expression, be sure to
use FactoryTalk Historian performance Equations syntax, such
as one of these:
’r;sinusoid’ * 2
(’r;cdt158’+’r;sinusoid’)/2
log(’r;cdt158’)
(’r;sinusoid’))/tagspan(’r;sinusoid’)
Description This description appears on trends of this data set in the tag
descriptors area.
Calculation
Interval
The interval (minutes, hours, days) for the calculation.
Interval Sync Time This is the absolute time of day at which the periodic
calculations are done. For example, if the Interval Sync Time
box is set to 12:00:24 PM and the time in the Refresh Interval
box is set to ten minutes, then the calculation for each period
is executed at the following times: 12:10:24, 12:20:24,
12:30:34, etc.
Value Column
Name
The name that represents the value column of the calculated
data rather than the time stamp column.
Refresh Interval The interval at which you want to automatically update the
data set. You can also type a number between 0 and 999. If
you select 0, data is not automatically updated.
Stepped Plot Selected by default. Clear the check box if you want a point-
to-point plot.
4. Click OK to save your changes.
 The data set name must be unique for the current .piw or .pdi file.
 The node name and tag name must be valid.
 The interval must be a valid FactoryTalk Historian Time.