DeleteTrendLine Method
DeleteTrendLine is a method for a Trend Invoke method action.
- Purpose: DeleteTrendLine
- Advanced Configuration: DeleteTrendLine
Purpose: DeleteTrendLine
To delete a specified point line from the runtime Trend Control when Invoke Method is triggered by an event.
Advanced Configuration: DeleteTrendLine
Click Advanced on the Action tab of the Procedure Information dialog box.
The Edit Method dialog box opens for the DeleteTrendLine method
Configuration is as follows.
Field | Description | ||
---|---|---|---|
Method name | Name of the selected method. Note: Another method can be selected from the drop-down list. | ||
Method result | (Optional) Setpoint that contains the status value. | ||
Class | Boolean | ||
Structure Type | BOOL | ||
Allowed | Device or global Point ID. | ||
Parameters | LineID | String that evaluates to an existing Line ID. Trending will delete the specified line when the method is invoked. | |
Result: When a user invokes the method, the Method result displays one of the following:
- The number of lines deleted from the chart
- A dialog box with an appropriate error message, if an existing line cannot be deleted
- Zero, if the line does not exist on the chart