About controlling Simulink model execution at run time

2013 7 12
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I would like to run a Simulink model from a MATLAB script. Is there a way to eventually stop and restart the simulation, depending on a particular signal value in the model?
In particular, my application is a transmission chain. Since I don't know in advance the proper noise level to set, I'd like to run the model with an initial one, and then eventually stopping, changing the parameter, and restarting, depending on the Error Rate Calcutation, which indeed is a signal in the model.
I've read about accessing blocks data at run time in the documentation, but still I didn't understand if I can do what I want.
Thanks for any help, Luca

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Kaustubha Govind
Kaustubha Govind 2013-7-12

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You might want to use the Stop block to build the stop logic into the model itself. You can then run the model using the SIM command in a loop from MATLAB, and restart simulation at each iteration after modifying the required parameters. Note that the SIM command will not return until the model stops running completely (a pause will not do).

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David Sanchez
David Sanchez 2013-7-12

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You can use the following commands to control the simulink model:
set_param(gcs,'SimulationCommand','Pause');
set_param(gcs,'SimulationCommand','Continue');
set_param(gcs,'SimulationCommand','Stop');

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Luca Barbiero
Luca Barbiero 2013-7-12
Thanks for your answer. But do you know if I can have the script executing those commands conditioned on a certain signal in the model?
In other words: can a script get the actual value of a signal in a model, while the latter is running, and depending on that, eventually stopping automatically the simulation by
set_param(gcs,'SimulationCommand','Stop');
This is what I'm really wondering! Maybe it's easier to do this from inside the model itself?

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