Implementing Interfaces
The methods prototype of an interface can be implemented by a function block.Upon creation of the function block, or editing its properties, you can specify one or more interfaces in the Implements field; the interface and its methods will appear in the project tree as subelements of the Function Block that implements them.
In the example of the above picture, fb_class_2 implements intf_1; and intf_1 extends intf_2.In order to implement a method prototype of an interface, you need to create a method which has the same prototype (name and input variables) of the method prototype you wish to implement. Compiling a project with method prototypes not correctly implement- ed, will raise errors.To implement a method prototype you can create a new method (see paragraph 6.7.2.1) which has the same prototype of the method you wish to implement, or you can right-click on the method prototype and select Implement method; this way a new method will be created, already with the correct prototype.Method prototypes can have different icons, with different meaning:method prototype correctly implemented.
there is a method with the same name but different prototype from the one you wish to implement.
no method has been found with the same name of the method prototype you wish to implement.
the previous icons can also have a blue arrow on their right side, that means the method prototype is inherited from a different interface
In the example of the above picture, fb_class_2 implements intf_1; and intf_1 extends intf_2.In order to implement a method prototype of an interface, you need to create a method which has the same prototype (name and input variables) of the method prototype you wish to implement. Compiling a project with method prototypes not correctly implement- ed, will raise errors.To implement a method prototype you can create a new method (see paragraph 6.7.2.1) which has the same prototype of the method you wish to implement, or you can right-click on the method prototype and select Implement method; this way a new method will be created, already with the correct prototype.Method prototypes can have different icons, with different meaning:method prototype correctly implemented.
there is a method with the same name but different prototype from the one you wish to implement.
no method has been found with the same name of the method prototype you wish to implement.
the previous icons can also have a blue arrow on their right side, that means the method prototype is inherited from a different interface