ASIL

You can assign ASIL (Automotive Safety Integrity Level) to requirements in several ways.

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1. Directly assign to a requirement

You can directly assign ASIL to a requirement by double-clicking on the top-right corner of the requirement.
Assign ASIL to Requirement

You can also assign it from Requirement’s property view.
Set ASIL to requirement from property view

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2. ASIL assigned by decomposition

Please refer to “Decomposition” for details.
When you perform decomposition several times, ASIL assigned at the last decomposition will stay.

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3. Safety Goal

When you create a Safety Goal Requirement with ASIL on a Safety Concept Diagram, the ASIL of the safety goal will apply to all the requirements on the diagram.

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Determination of ASIL

ASIL of requirement is determined in the following order.

  1. ASIL assigned directly to a Requirement
    ASIL directly assigned to a requirement prevails ASIL that were assigned in other ways.
  2. ASIL assigned by decomposition
  3. ASIL being set to a Safety Concept Diagram
    If there is more than one Safety Goal being set to a diagram, the highest ASIL will prevail.
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View ASIL History

You can see a history of assigned ASIL from [View ASIL History] menu on a requirement’s pop-up menu.
View ASIL History

This ASIL history helps to clarify how the current ASIL was set to the requirement.
View ASIL History