Stateflow User's Guide

Controlling with Superstates

This chapter introduces you to superstates. These objects extend the use of states and transitions by defining states that contain other Stateflow objects. Superstates form the basis of Stateflow containment hierarchy. They also help you to simplify your Stateflow diagrams. Use the following sections to add superstates to the SFcontrol4 model you build in Controlling with Junctions:

Adding Superstates to Simplify Control	Use a junction and an additional state to delay turning on a control device for temperature changes.
Adding a History Junction to Save State	Use a history junction to remember the active state of a superstate when it becomes active again.
Creating Subcharts to Add More Substates	Convert a superstate into a subchart to gain room for more substates.
Controlling Objects with Parallel Superstates	Use parallel states to control two independent devices together.

Using Junctions in Flow Diagrams Adding Superstates to Simplify Control