This example demonstrates how a custom pick action might be configured to enable users to change the value of a Test point, which itself is used in a Logic program. The expression used for the pick action specifies a default value—the value that is used if no other value is specified for the point. This type of expression is only supported by User Methods (see Method Expressions in the ClearSCADA Guide to Expressions).
Example:
The fields on the User Methods tab of the Test Point’s Form are used to assign a custom pick action to that point:
The configuration is saved.
Whenever a user with the Override/Release permission for the Test Point displays the context sensitive menu for that point, the custom pick action is displayed on the list of menu options:
When the pick action is selected, a custom pick action window is displayed:
The user can either:
- Select the OK button without entering a different value (in which case, the Test Point will be overridden with the default value of 20)
- Overtype the default with a different value, then select OK.
- Specify a different value using the Numeric Touch Screen keypad. (The keypad is only displayed on ViewX workstations on which the On-Screen Keyboard feature is enabled.)