Rockwell Automation FactoryTalk Historian SE ProcessBook 3.2 User Guide - Manual (Page 358)

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FactoryTalk Historian ProcessBook User Guide
340
PI Time String Meaning
*-1h One hour ago
t+8h 8:00:00 am today
y-8h 4:00:00 pm on the day before yesterday
mon+14.5h 2:30:00 pm last Monday
sat-1m 11:59:00 pm last Friday
Time Interval Examples
In interval expressions, a positive or unmarked interval is based on the start
time, and a negative interval is based on the end time of a time expression.
For example, if the start time is y, the end time is t, and the interval is +5h
for a Sampled Data function, then interpolated values are generated at y,
y+5h, y+10h, y+15h, and y+20h. If the interval is -5h, the interpolated
values are generated at y+4h, y+9h, y+14h, y+19h and t.
PI Time String Meaning
1.5h One and one-half hours
32m Thirty-two minutes
49s Forty-nine seconds
+5h Five hours added to the time beginning with
the start time.
-5h Five hours subtracted from the time
beginning with the end time.
Table of Format Values
The following number formats are available in FactoryTalk Historian
ProcessBook. The characters used for the decimal and grouping are based