Trigger Arguments for External Communication

You can use trigger arguments for external communication. Stack variables which do not burden the static RAM are created for the arguments of a C function. The dynamic RAM area is burdened temporarily.

You should always keep the following points in mind:

• Triggers are public methods. Their arguments can be described outside of the state machines. In the Layout Editor, the trigger arguments are represented by black argument connections.
• You can use classes (except CT blocks) as complex trigger arguments. However, a state machine with complex trigger argument cannot be stimulated in an experiment.

• Actions and conditions are private methods. Their arguments are therefore not available outside the state machine. In the Layout Editor, they are represented by white argument connections.

  If a trigger argument is to be used in an action or condition specified as a block diagram, an argument of the same type and the same name as the trigger argument must be added to each corresponding method.

  

  The arguments are depicted according to their name and their type. If, in the trigger and the action/condition, there are arguments with the same names but with different types, a warning is issued. If the argument is only defined in an action or a condition but not in the opening trigger, an error message is output.

The rules for using trigger arguments are described here: Rules for Trigger Arguments