Trigger dialog box
    The
 Trigger 
dialog box opens when you click the Edit button on the Triggers tab of the Alarm Setup editor.The
 Trigger 
dialog box has the following columns:- Tag or expressionType the tag name or expression associated with the connection. If a tag or expression was selected, it is shown here. You can use analog, digital, and array tags to generate alarms.
 - Tag button (...)Click this button to open the Tag Browser and select a tag instead of typing the tag name in the Tag or expression column.
 - Exprn button (...)Click this button to open the Expression Editor and create an expression instead of typing the expression in the Tag or expression column.
 
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