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Check safety-related optimization settings for application lifespan

Check ID: mathworks.hism.hisl_0048

Check model configuration for optimization settings that can impact safety.


This check verifies that model optimization configuration parameters are set optimally for generating code for a safety-related application. Although highly optimized code is desirable for most real-time systems, some optimizations can have undesirable side effects that impact safety.

Available with Simulink® Check™.

Results and Recommended Actions

ConditionRecommended Action
The model includes blocks that depend on elapsed or absolute time and is configured to minimize the amount of memory allocated for the timers. Such a configuration limits the number of days the application can execute before a timer overflow occurs. Many aerospace products are powered on continuously and timers should not assume a limited lifespan. Set Configuration Parameter Application lifespan (days) or set the parameter LifeSpan to inf.

Action Results

Clicking Modify Settings configures model optimization settings that can impact safety.

Subchecks depend on the results of the subchecks noted with D in the results table in the Model Advisor window.

Capabilities and Limitations

  • Does not run on library models.

  • Does not allow exclusions of blocks or charts.

See Also