Model Parts, Diagrams, Dictionary Items, and Properties > Properties > Synchronous (property)
  
Synchronous (property)
For automation interface information about the Synchronous property (Information Source association through the automation interface), see the automation interface topic for an IO Flow in the Related Topics.
This property shows the source item for an IO Flow.
By default, the Synchronous check box is selected.
This property is set on the Options tab of an action node item's Property Pages.
The following section provides information about the items and diagrams for which Synchronous is a property. For more information about an item or diagram, click it.
Is property of
Call Behavior Action
Call Operational Action