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| R2011b Documentation → Stateflow | |
Learn more about Stateflow |
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| Contents | Index |
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When to Use the Event Properties Dialog Box |
Use the Event properties dialog box when you want to modify properties of an event, which can vary based on the scope of the event. The Event properties dialog box displays only the property fields that apply to the event you are modifying.
For example, the dialog box displays these properties and default values for an event whose scope is Local.
For input events, the dialog box displays these properties and defaults.
To access the Event properties dialog box, use one of these methods:
Add a new event from the Stateflow Editor.
The Event properties dialog box appears, as described in Adding Events Using the Stateflow Editor.
Open the Event properties dialog box in the Model Explorer in one of these ways:
Double-click the event in the Contents pane.
Right-click the event in the Contents pane and select Properties.
Select the event in the Contents pane and then select View > Show Dialog Pane.
The Event properties dialog box opens inside the Model Explorer.
Name of the event. Actions reference events by their names. Names must begin with an alphabetic character, cannot include spaces, and cannot be shared by sibling events.
Scope of the event. The scope specifies where the event occurs relative to the parent object. For information about types of scope, see Types of Events.
Property that applies to input and output events.
For input events, port is the index of the input signal that triggers the event.
For output events, port is the index of the signal that outputs this event.
You assign input and output events to ports in the order in which you add the events. For example, you assign the first input event to input port 1 and the third output event to output port 3.
You can change port assignments in the Model Explorer or the Event properties dialog box. When you change the number of one port, the numbers of other ports adjust automatically to preserve the relative order. See Association of Input Events with Control Signals and Association of Output Events with Output Ports.
Type of signal that triggers an input or output event. See Using Input Events to Activate a Stateflow Chart or Using Output Events to Activate a Simulink Block.
Option for setting debugger breakpoints at the start or end of an event broadcast.
Description of this event. You can enter brief descriptions of events in the hierarchy.
Link to online documentation for events in a Stateflow chart. To document a particular event, set the Document Link property to a Web URL address or MATLAB expression that displays documentation in a suitable online format (for example, an HTML file or text in the MATLAB Command Window). When you click the blue Document Link text, the chart evaluates the expression.
 | How to Define Events | Using Input Events to Activate a Stateflow Chart |  |
Learn how engineers use Stateflow to model state machines in their Simulink models.
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