Main Content

Check usage of If blocks and If Action Subsystem blocks

mathworks.hism.hisl_0010

Since R2021b

Dependencies: Simulink® Check™

Usage: High-Integrity System Modeling

Guideline: hisl_0010: Usage of If blocks and If Action Subsystem blocks

Description

Use this check to inspect the usage of If blocks.

Check Parameters

Use the Model Advisor Configuration Editor to define the scope of the analysis by specifying the input parameters.

ParameterDescription
Follow links

Specify whether to include content of library-linked blocks in the analysis.

on (default) | off

Look under masks

Specify whether to include masked model elements in the analysis.

all (default) | none | graphical | functional

  • all — Check analysis includes all masked model elements.

  • none — Check analysis excludes masked model elements.

  • graphical — Check analysis includes only the graphical masked model elements.

  • functional — Check analysis includes only the functional masked model elements.

Recommended Actions and Results

Review the violations that are flagged by the check and the recommended action for fixing the issue. After applying the changes, save the model and rerun the check analysis.

Modeling ConditionRecommended Action
The model or subsystem contains an If block using elseif expressions without an else condition.In the If block Block Parameters dialog box, select Show else condition. Connect the resulting else output port to an If Action Subsystem block.
The model or subsystem contains an If block with output ports that do not connect to If Action Subsystem blocks.Verify that output ports of the If block connect to If Action Subsystem blocks.

Capabilities and Limitations

  • Does not run on library models

  • Allows exclusions of blocks and charts

  • Analyzes only active variant choices

  • Performs model compilation

Version History

Introduced in R2021b