xxiii
C
ONTENTS
• • • • •
Ways to stop data logging ...............................................................................22– 17
23• Setting up trends............................................................................ 23–1
About trends..............................................................................................................23– 1
Charting current versus historical data ..............................................................23– 1
Creating trend objects ...............................................................................................23– 2
Providing a name for the trend ..........................................................................23– 3
Setting up trend properties.................................................................................23– 4
Testing a trend ...................................................................................................23– 5
The parts of a trend ...................................................................................................23– 5
Chart ..................................................................................................................23– 6
Chart title ...........................................................................................................23– 6
X-axis.................................................................................................................23– 6
X-axis legend.....................................................................................................23– 7
Y-axis.................................................................................................................23– 7
Y-axis legend.....................................................................................................23– 7
Pens....................................................................................................................23– 7
Legends..............................................................................................................23– 8
Pen icons............................................................................................................23– 9
Pen markers .......................................................................................................23– 9
Value Bar.........................................................................................................23– 10
Trend chart styles ....................................................................................................23– 10
The Standard chart style ..................................................................................23– 11
The XY Plot chart style..................................................................................23– 11
Isolated graphing .............................................................................................23– 12
Plotting a value across the full width of the chart ...........................................23– 13
Choosing trend colors, fonts, lines, and legends.....................................................23– 14
Changing the trend highlight color..................................................................23– 14
Changing the trend object background............................................................23– 14
Showing a current value legend.......................................................................23– 15
Showing a line legend......................................................................................23– 16
Using shading to compare pens...............................................................................23– 16
Using overlays to compare real-time and historical data........................................23– 19
Setting up snapshots and overlays...................................................................23– 19
Using trend templates..............................................................................................23– 21
Applying a consistent appearance to trend charts ...........................................23– 21
Creating a set of different views for the same data .........................................23– 21
Returning to a standard display .......................................................................23– 21
Saving pen attribute data .................................................................................23– 21
Loading trend templates ..................................................................................23– 22
About the Trend graphic library ......................................................................23– 23
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