Stateflow User's Guide

Outputting State Activity to Simulink

Stateflow allows a chart to output the activity of its states to Simulink via a data port on the state's Chart block. To enable output of a particular state's activity, first name the state (see Entering the Name), if unnamed, then select the Output State Activity check box on the state's property dialog (see Changing State Properties). Stateflow creates a data output port on the Chart block containing the state. The port has the same name as the state. Stateflow also adds a corresponding data object of type State to the Stateflow data dictionary. During simulation of a model, the port outputs 1 at each time step in which the state is active; 0, otherwise. Attaching a scope to the port allows you to monitor a state's activity visually during the simulation. See Sharing Input and Output Data with Simulink for more information.

Note    If a chart has multiple states with the same name, only one of those states can output activity data. If you check the Output State Activity property for more than one state with the same name, Stateflow outputs data only from the first state whose Output State Activity property you specified.

Labeling States

Creating Transitions in Stateflow Charts

© 1994-2005 The MathWorks, Inc.