jc_0656: Usage of Conditional Control blocks

Since R2020a

Guideline Publication

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

• Version 5.0

Sub ID Recommendations

• NA-MAAB — No recommendations

• JMAAB — a

MATLAB Versions

All

Rule

Sub ID a

To make all actions in the conditions explicit, these block parameters shall be set as follows :

• For If blocks, select Show else condition

• For Switch Case blocks, select Show default case

Custom Parameter

Not Applicable

Example — Correct

Using default behavior in the Switch Case block.

Example — Incorrect

Not using default behavior in the Switch Case block.

Rationale

Sub ID a:

• Determining whether there is pointless processing or if something is missing from the design (such as a missing description) is easier when the processing of exceptions (else, default) is explicitly set in the model.

Verification

Model Advisor check: Check default/else case in Switch Case blocks and If blocks (Simulink Check)

Last Changed

R2020a