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Altova UModel 2021 Professional Edition

SysML activity diagrams express information about a system's dynamic behavior, such as the flow of objects during system operation. Such diagrams express the order in which actions are performed, and which of the structures performs a particular action. The flows themselves can be control flows or object flows. You can add either kind of the flow through the respective toolbar buttons:

 

um-ic-sysml-ControlFlow

Control flow

um-ic-sysml-ObjectFlow

Object flow

 

The example Activity diagram illustrated below uses both flows. Control flows appear as dashed lines, while object flows appear as uninterrupted lines.

um-sysml-act-01

SysML Activity diagram

The SysML Activity diagram is modified from UML, with SysML extensions. For general information about designing UML Activity diagrams with UModel, see Activity Diagram.

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