Rockwell Automation 9301 Series RSView32 Users Guide - Manual (Page 479)

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RSView32 User’s Guide
To configure the time axis, fill in the following fields as outlined below.
Start time for a real-time trend
For a real-time trend, NEWEST is shown. Data will start plotting as
soon as the trend starts, with the newest data available.
You cannot modify the start time for a real-time trend.
Start time for a historical trend
Start times for historical data can be relative or absolute. With relative
time, plotting always starts relative to the newest or oldest data in the
log model or log file. With absolute time, plotting always starts at the
specified date and time.
You can also specify a start time at runtime. For details, see
“Specifying a start time” on page 13-34.
To specify relative time, type one of the following:
the word NEWEST or NEWEST minus (-) a time range
the word OLDEST or OLDEST plus (+) a time range
Specify the time range as a whole number followed by a unit. Valid
units are: Sec, Min, Hour, Day, Week.