EN 50716:2023 - Railway Applications - Requirements for Software Development
Annex A: Criteria for the selection of techniques and measures – EN 50716:2023 - Railway Applications - Requirements for Software Development

EN 50716:2023 - Railway Applications - Requirements for Software Development A.17: Table A.17: modelling

Detailed table for modelling. At SIL 1 to 4, data flow diagrams, control flow diagrams, state machines and state transition diagrams, Petri nets, decision or truth tables, formal methods, performance modelling, structure diagrams, sequence diagrams and data modelling are HR; prototyping or animation, cause consequence diagrams and event tree diagrams are R. At Basic Integrity data modelling, control flow diagrams, decision tables, sequence diagrams and cause consequence diagrams are R. For SIL 1 to 4, modelling guidance is defined and used and at least one HR technique is chosen.

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