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When you simulate a model related to time (such as a transition with a time trigger), Cameo Simulation Toolkit will obtain the simulation time from a simulation clock. The simulation time is the amount of time spent simulating a model. Cameo Simulation Toolkit also uses the simulation time in the timestamp of a signal instance in a SimulationLog (see Simulation log), in a time series chart (see Time Series Chart), and on messages of a generated Sequence diagram. 

There are three types of simulation clocks in Cameo Simulation Toolkit:

• Built-in clock. This is the default simulation clock.

• Internal simulation clock. This clock is designed to precisely control the simulation time. Its implementation is based on UML run-to-completion semantics and internal completion events.
• Model-based clock. You can select the model-based clock by making a property as the time value tag definition of a Simulation Config. See Model-based Clock for further details on the model-based clock.
  
  

To open the Simulation Clock

• Right-click a session in the Simulation Sessions pane and select Show Simulation Clock.
  
  

The Simulation Clock dialog with the Step button.

To show orhide the Simulation Time

• Click in the toolbar of the Simulation window.
  
  
  
  

Related pages

• Built-in clock
• Internal simulation clock
• Model-based clock
• Understanding simulation sessions