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Solution Example: Solution file: TrendCustomDataSource.dbsln |
- Solution Name: Trend Custom Data Source
- Software Version:
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- v10
- Keywords:
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- TrendChart. GetSamples. Data.
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Summary
This example shows how to use
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TrendCharts, and solutions on basic archiving, creating and
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charting of Data.
Technical Information
When creating a TrendChart, you can associate a HistorianTag with a HistorianTable to supply data points. This configuration is done through the Historian section. These tables can either receive data from databases accessed via software platform or from a script within a script class, accessible under Scripts / Classes.
In this example, the GetSamples method is applied in two different ways:
In the
ServerMainScriptClass, the method is used to create a custom signal and send it to the historian for plotting.In the
MyClassScriptClass, the method is used to retrieve data stored in a table within a database, which is then sent to the historian for plotting.
When creating a
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TrendChart, if you have data logging
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set up in
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software platform (via HistorianTags) or if you
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're using software platform with the OSIsoft PI System, the system will automatically
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search for
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archived
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data to plot
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.
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If you want to
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use data other than what the
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system archives by default, you have
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two options:
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Populate the historian archive (
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Microsoft SQL, or other
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databases,
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including the PI System) from another application.
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Customize the
GetSamplesmethod used by the
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One more advanced example of custom Trend chart drawing, where a curve model is created from a recipe: (TrendWithRecipe.rar).
Reference Information
TrendChart, as demonstrated in the
ServerMainandMyClassScriptClasses
In this section:
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