Introduction
The History Values query has many parameters to configure.
Below is a brief description on how to configure them.
For more information, please see the corresponding help topics in the Wonderware Historian documentation.
In the Retrieval part of the window you can set all retrieval parameters :
Retrieval mode
You can select a Retrieval Mode (Cyclic is the default) :
All Wonderware Historian retrieval modes are available :
- Cyclic
- Delta
- Full
- Interpolated
- BestFit
- Average
- Min
- Max
- Integral
- Slope
- Counter
- ValueState
- RoundTrip
Query row limit
A Query Row Limit can be set :
This allows to limit the number of data rows returned.
Cyclic Attributes
The Cyclic Attributes can be configured :
Delta Attributes
The Delta Retrieval Deadband can be configured :
Other Attributes
To display the other retrieval options click on the Other button :
Here, you can configure the History Version, the Rules Settings, the State Retrieval (available depending the retrieval mode chosen) and the Transformation options.
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