db_0137: States in state machines

Since R2020a

Guideline Publication

Control Algorithm Modeling Guidelines - Using MATLAB^®, Simulink^®, and Stateflow^®

• Version 5.0

Sub ID Recommendations

• NA-MAAB — a

• JMAAB — a

MATLAB Versions

All

Rule

Sub ID a

When the Decomposition for the Chart block or State is set to OR (Exclusive), there shall be at least two states in the hierarchy.

Custom Parameter

Not Applicable

Example — Incorrect

The hierarchy contains only one state when the Decomposition option is set to OR (Exclusive)

Rationale

Sub ID a:

• Redundant descriptions impair readability.

• Generated code includes unnecessary state variables.

Verification

Model Advisor check: Check for state in state machines (Simulink Check)

Last Changed

R2020a