Extension of an interface
You can extend interfaces just like function blocks. The interface is then also given the interface methods and interface properties of the basic interface in addition to its own.
Procedure. Creation of an interface that extends another interface.
In the device tree, select the Application object.
Click
.The Add Interface dialog opens.
Specify a name for the new interface.
Select the Extends option and then click the
button.
The Input Assistant opens.
From the category Interfaces, select the interface that is to be extended by the new interface.