IBD: Figure 38: Internal structure of the circuit example

The composite image shows a version of Figure 38: Internal structure of the circuit example more or less like the SysPhS-1.1 spec version (with overlapping Connector paths) and a version more in line with Webel Best Practice:

Click on the image to view it full size

If you've been following this trail from the beginning you'll hopefully have taken this to heart:

Webel vs SysPhS-1.1: Diagramming style: DO NOT recommend overlapping Connectors as shown in 'Figure 38: Internal structure of the circuit example'

GOTCHA: A SysML/SysPhS Connector (or Modelica connection) in an electronics model is NOT a wire! It's a contract between connected Ports.

It can lead directly to modelling problems such as:

SysPhS-1.1 spec version of 'Figure 38: Internal structure of the circuit example' shows some bi-directional ItemFlows for Charge on overlapping Connector line sections, which are impossible to interpret.

It turns out that in MagicDraw/Cameo v19SP3 one can't draw that bi-directional ItemFlow properly anyway on any Connector due to a known, reported bug that is scheduled to be fixed.

The following display option tip works well for electrical circuit modelling:

TIP: UML/SysML: MagicDraw/Cameo: Consider showing the constraint parameter name and type label inside the small rectangular parameter symbol on SysML Parametric Diagrams. Dr Darren swears by it!

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BDD: Figure 40: Circuit constraint blocks

Notes

[ANTI-PATTERN, ISSUE]{STRONG} Webel vs SysPhS-1.1: Diagramming style: DO NOT recommend overlapping Connectors as shown in 'Figure 38: Internal structure of the circuit example'

[ANTI-PATTERN, ISSUE]{STRONG} GOTCHA: A SysML/SysPhS Connector (or Modelica connection) in an electronics model is NOT a wire! It's a contract between connected Ports.

[CAPABILITY, FEATURE, STYLE, TIP]{RECOMMENDED} TIP: UML/SysML: MagicDraw/Cameo: Consider showing the constraint parameter name and type label inside the small rectangular parameter symbol on SysML Parametric Diagrams. Dr Darren swears by it!

[ISSUE] SysPhS-1.1 spec version of 'Figure 38: Internal structure of the circuit example' shows some bi-directional ItemFlows for Charge on overlapping Connector line sections, which are impossible to interpret.

Snippets (quotes/extracts)

[SysPhS-1.1] A.2.2 System being modeled: The electrical circuit has six components: ground, electrical source, inductor, capacitor, and two resistors, see Figure 37.