- Data interface
The data interface of a selected widget is displayed in the following figure. The data interface of a selected widget is displayed in the following figure. If a widget is comprised of multiple data interfaces, you can click an interface title and configure data one by one.
- Interface data structure
The following area outlined in red displays the data structure of the selected data interface.
Click the drop-down menu (outlined in red) to see various data source types.
If you select Database from the Data Source Type drop-down list, select a database for inquiry.
Note You must use the corresponding syntax to query the database you selected. DataV has no special handling for database syntax.
- Data source type and parameter
Data source type and the corresponding input parameters are displayed in the area outlined in red.
- Data filters
Select Data filter to enable the data filter function. You can write programs to implement data structure conversion, filtering, and simple calculations.
- Data polling frequency
Select Auto Data Request. You can also manually enter the time frequency of round-robin.
Select a widget and click the Data tab. The data configuration menu of the widget appears.