Rockwell Automation 1756-HIST2G FactoryTalk Historian ME 2.2 - Manual (Page 69)

4 • V IEWING D ATA
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S HOW P OINTS
Check the Show Points checkbox to display discrete data points in the trend chart.
Each point will be represented in the chart as a bubble. You must disable Auto
Refresh (by clicking the red square) before you can enable the Show Points feature.
S HOW V ERTICAL B AR
Check the Show Vertical Bar checkbox to display a vertical bar across all points on
an X axis. At the bottom of the trend chart, timestamps will be adjusted when you
click inside the trend chart and drag the vertical bar across the chart.
When Daylight Savings Time (DST) occurs, the timestamps displayed will
automatically update to reflect the time change. If you adjust the start time to an
earlier start time, the timestamps reflected will coincide with DST even if the DST
transfer did not occur until later.
You must disable Auto Refresh (by clicking the red square) before you can enable the
Show Vertical Bar feature.
If you want to draw a trend chart that consists of high speed points, avoid checking the
Show Points checkbox due to the large number of points that will be displayed.