Model Parts, Diagrams, Dictionary Items, and Properties > Dictionary items > Multidrop bus (dictionary item)
  
Multidrop bus (dictionary item)
For automation interface information about a Multidrop Bus, see Multidrop bus (automation interface).
A Multidrop Bus allows parallel communication between items on the System Architecture Diagram. Rather than all the items being inter-linked, each makes one connection to the Multidrop Bus.
A Multidrop Bus uses the Protocol, Speed and Width properties of a linked Multidrop Bus Type.
You can create a Multidrop Bus through the context menu of a Package: right-click the Package, point to New, point to Proprietary, point to System Architecture Model, and then click Multidrop Bus. You can also create a Multidrop Bus through a System Architecture Diagram.
In addition, you can also create a Multidrop Bus by copying an existing Multidrop Bus. Modeler copies the Multidrop Bus' links. For more information, see Copying items.
When used on a diagram, a Multidrop Bus' notation is as follows:
In the Modeler panes, a short-cut symbol on the Multidrop Bus' icon indicates that the item is a stub.
The following sections provide information about how a Multidrop Bus is used in the model. For more information about a property, item, model part or diagram, click it.
Properties
In addition to the standard properties, a Multidrop Bus has these properties:
• Number of instances
• Visibility
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The Protocol, Speed and Width properties are taken from a linked Multidrop Bus Type.
Owned by
Model
Package
Owns
Comment
Constraint
Dependency —The Dependency is owned jointly by the Multidrop Bus and the other associated item. The access permissions you have to a Dependency are determined by the access permissions of the dependent item.
Drop —The Drop is owned jointly by the Multidrop Bus and the associated item. The access permissions you have to a Drop are determined by the access permissions you have to the source item.
Defined in these parts of the model
System Architecture Model
Shown on these diagrams
System Architecture Diagram
Variant Diagram
Can be linked to these dictionary items
In addition to the owning Package or Model, a Multidrop Bus can be linked to the following items.
Multidrop Bus Type —The linked Multidrop Bus Type specifies the Protocol, Speed and Width requirements for the Multidrop Bus.
Stereotype
Subsystem —Note that a Multidrop Bus cannot be linked to both a Package and a Subsystem.
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