hisl_0079: Connections to root input/output ports
R2026bAdhere to internal connection constraints on root-level Inport and Outport blocks to improve traceability
Since R2024a
Usage: High-Integrity System Modeling
Guideline ID: hisl_0079
Rules
| hisl_0079: Connections to root input/output ports |
|---|
To improve traceability, adhere to the internal connection constraints on the root-level Inport and Outport blocks of the current model. Rationale Improve robustness of design. Verification Check for invalid root input and output port connections (Simulink Check) |
Tips
When internal connections to the root-level port blocks of a model are invalid, the software silently inserts hidden blocks to satisfy the constraints wherever possible. The hidden blocks can result in generated code without traceable requirements.
Industry Standards
DO-331, Section MB.6.3.1.d – High-level requirements are verifiable
DO-331, Section MB.6.3.2.d – Low-level requirements are verifiable
DO-331, Section MB.6.3.3.b – Software architecture is consistent
IEC 61508-3, Table A.3 (3) - Language subset
IEC 62304, 5.5.3 - Software Unit acceptance criteria
ISO 26262-6, Table 1 (1b) - Use of language subsets
EN 50128, Table A.4 (11) - Language Subset
EN 50657, Table A.4 (11) - Language Subset
