Webel: SysMLv1: Recommend using Block Definition Diagrams as associative, graphical engineering "scratchpads" FOR YOU; Use Internal Block Diagrams as the main presentation diagrams for your engineering colleagues and other stakeholders!

Experience shows that most engineers who are not yet fluent in SysML (and those who don't have past experience with UML) understand Internal Block Diagrams (IBDs) that present a system or device using a port-based "signal processing" idiom far better than the associative graphical notations used in Block Definition Diagrams (BDDs).

Internal Block Diagrams (IBDs) use a representation and modelling idiom that is very similar to electrical circuit design, network design, and mechatronics, and are typically more accessible to a wider audience than BDDs.

Webel strongly recommends using Block Definition Diagram (BDDs) as associative, graphical engineering "scratchpads" FOR YOU; Use Internal Block Diagrams as the main communication diagrams for your engineering colleagues and other stakeholders!

Besides, BDDs only how what MAY be connected,
not what IS connected in a particular context.

Visit also: Webel: SysMLv1: Highly recommend creating a "focus" Block Definition Diagram (BDD) for each main Block with expanded feature details and relationships to at least nearest neighbours

Visit also: Webel: SysMLv1: TIP: Consider using high level "communication" Associations between Blocks in BDDs with ItemFlows and corresponding context IBDs WITHOUT any Ports, with Connectors typed by the Associations (as well, in parallel with your port-based IBDs).

Visit also: Webel: SysMLv1: TIP: Consider using high level "communication" Associations between Blocks in BDDs and corresponding object diagram BDDs WITHOUT any Ports, with Links typed by the Associations. Object diagrams are great for exploring Slot values, too.

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