Rockwell Automation FactoryTalk View Site Edition Users Guide - Manual (Page 624)

F ACTORY T ALK V IEW S ITE E DITION U SER ’ S G UIDE
23–28
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Displaying the difference in pen values for two points
The delta value bar works with the value bar to show the difference in value between two
x-axis points for standard and XY Plot chart types.
To show the delta value bar
1. Right-click the trend chart, select Active value bar, and then click Value.
2. Click the trend where you want the value bar to appear.
3. From the shortcut menu, select Active value bar, and then select Delta.
4. Click the trend where you want to see the difference between the value at the value
bar’s data point and the value at the delta value bar’s data point.
To move the delta value bar
1. Right-click the trend, select Active value bar, and then click Delta.
2. Click the trend chart at the position where you want to know the difference between
the value indicated by the value bar, and the value indicated by the delta value bar.
To remove the delta value bar
 Right-click the trend, and then select Show value bar.
The value of the
data point at the
value bar’s
position
The difference
between the
value bar’s data
point and the
delta value bar’s
data point
The delta value
bar
The value bar