Stateflow Diagram Objects :: Stateflow Concepts (Stateflow User's Guide)

Stateflow User's Guide

Stateflow Diagram Objects

Stateflow diagrams are made of objects. Some of these objects graphical, that is, you draw them in a Stateflow diagram. Some of these objects are nongraphical, that is, they do not have a graphical appearance, but are referred to in the Stateflow diagram.

The following sample Stateflow diagram displays some of the key graphical objects of a Stateflow diagram.

Stateflow Diagram of Graphical Objects

This section introduces you to the graphical and nongraphical objects in a Stateflow diagram in the following topics:

States -- Describes the role of states in a Stateflow diagram that represent the current mode of an executing diagram.
Transitions -- Describes the role of a transitions in a Stateflow diagram that provide a path for an executing diagram to change from one mode (state) to another.
Default Transitions -- Describes the role of a default transition that specifies which exclusive (OR) state in an executing diagram is active on startup.
Events -- Describes the role of events that drive Stateflow diagram execution.
Data -- Describes the role of data that serves as variables in a Stateflow diagram.
Conditions -- Describes the conditions that, along with events, drive Stateflow diagram execution.
History Junction -- Describes the role of history junctions that record the most recently active substate of a chart or superstate.
Actions -- Describes the role of actions that take place as part of Stateflow diagram execution.
Connective Junctions -- Describes the role of connective junctions that provide decision points for transitions taking place during diagram execution.

All Stateflow objects are arranged in a hierarchy of objects. See Stateflow Hierarchy of Objects.

Defining Stateflow Interfaces to Simulink States