Stateflow

Events

Events drive the Stateflow diagram execution but are nongraphical objects and are thus not represented directly in a Stateflow chart. All events that affect the Stateflow diagram must be defined. The occurrence of an event causes the status of the states in the Stateflow diagram to be evaluated. The broadcast of an event can trigger a transition to occur or can trigger an action to be executed. Events are broadcast in a top-down manner starting from the event's parent in the hierarchy.

Events are created and modified using the Stateflow Explorer. Events can be created at any level in the hierarchy. Events have properties such as a scope. The scope defines whether the event is

• Local to the Stateflow diagram
• An input to the Stateflow diagram from its Simulink model
• An output from the Stateflow diagram to its Simulink model
• Exported to a (code) destination external to the Stateflow diagram and Simulink model
• Imported from a code source external to the Stateflow diagram and Simulink model

Default Transitions

Data