Rockwell Automation FactoryTalk Historian SE DataLink 4.2 User Guide - Manual (Page 32)

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FactoryTalk Historian DataLink User Guide
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Show Timestamps
A show timestamps check box appears when a function returns an array of
FactoryTalk Historian values over time. If selected, this option returns a
corresponding time stamp with each FactoryTalk Historian event value.
For functions that return multiple event values (for example, Sampled
Data), the orientation controls (page 26) determine how time stamps are
displayed in relation to each value.
For some functions that return a single value (for example, Current Value),
options are provided to provide equivalent options:
 Select no timestamp to suppress the time stamp display.
 Select time at left to return a time stamp into a cell to the left of the
event value.
 Select time on top to display the time stamp in a cell above the
retrieved event value.
When a reference to an array of tag names in cells is specified in the
Tagname field, these preferences are ignored. Time stamp and event
values are instead positioned to match the orientation of the input tag array.
For tag names in a single column, time stamps appear to the left of values.
For tag names in a single row, time stamps appear on top of values.
Interval Timestamps
Functions that return values at specific time intervals (for example,
Calculated Data) provide options to display different time stamps:
 Choose show start time to display the start time of each interval.
 Choose show end time to display the end time of each interval.
For calculated minimum, maximum, and range values:
 Choose show min/max time to display time stamps for minimum and
maximum values over each interval.