Find source of stopped simulation in Simulink

Hello everybody,

in Simulink there are multiple ways to stop a simulation. Examples:

1.) ... "StopTime" has been reached

2.) ... input of a Stop Block is nonzero

3.) ... set_param( gcs, 'SimulationCommand', 'stop' )

Now I was wondering if there's a way to find out what exactly caused my simulation to stop.

In my case especially the third case has to be treated differently.

Using

get_param( gcs, 'SimulationStatus' )

does not work, because the answer in all three cases is 'stopped'.

Any help would be very much appreciated.

Best regards,

Stefan

Answer 1

[Paul]

Hi Stefan,

If you use the sim command, then the output has some useful information. For example, I used a model with a Clock, feeding Compare To Constant (>= 3), feeding a Stop Simulation.

In this case, I set the Tfinal = 2.

>> y = sim('untitled');
>> y.SimulationMetadata.ExecutionInfo

ans = 

  struct with fields:

               StopEvent: 'ReachedStopTime'
         StopEventSource: []
    StopEventDescription: 'Reached stop time of 2'
         ErrorDiagnostic: []
      WarningDiagnostics: [0×1 struct]

After a change to the model to set Tfinal = 10.

>> y = sim('untitled');
>> y.SimulationMetadata.ExecutionInfo

ans = 

  struct with fields:

               StopEvent: 'ModelStop'
         StopEventSource: [1×1 Simulink.SimulationData.BlockPath]
    StopEventDescription: 'Stop requested by untitled/Stop Simulation'
         ErrorDiagnostic: []
      WarningDiagnostics: [0×1 struct]

I don't normally use set_param to control excution status of the model, so couldn't come up with an example of that to test.

If using the Play button, then make sure that Model Settings -> Data Import/Export -> Single simulation ouput is checked (which is the default). The default name for the output variable is 'out' (you can change this). Then, after clicking Play

>> out.SimulationMetadata.ExecutionInfo

ans = 

  struct with fields:

               StopEvent: 'ModelStop'
         StopEventSource: [1×1 Simulink.SimulationData.BlockPath]
    StopEventDescription: 'Stop requested by untitled/Stop Simulation'
         ErrorDiagnostic: []
      WarningDiagnostics: [0×1 struct]

[Stefan H]

Thank you very much Paul!

Works perfectly :-)