UML Modeling Techniques > System architecture modeling > Key items > Multidrop bus
Multidrop bus
A multidrop bus allows parallel communication between items on the System Architecture Diagram.
Use the icon on the System Architecture Diagram toolbar to add a multidrop bus to the diagram, or you can drag a multidrop bus from the dictionary.
When you have added a multidrop bus, you can change it both via the diagram using the multidrop bus Property pages and the context menu.
To describe the protocol, speed and width of the multidrop bus attach a multidrop bus type through the Options tab of the multidrop bus Property pages.
Drops link multidrop buses with other items on the diagram.