How can I return an error message when a dialog parameter of a masked subsystem is invalid in Simulink?
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I have a masked subsystem with one dialog parameter. When the value entered for this dialog parameter is invalid, I would like to be able to return an error message when the model is updated and stop execution.
Accepted Answer
MathWorks Support Team
on 27 Jun 2009
It is possible to display an error message and abort execution in Simulink using the ERROR function.
One can check for the validity of the dialog input in the mask initialization commands section and invoke the ERROR function with a desired error message if the input is found to be invalid. For example, if the dialog parameter is stored in the variable errID and is invalid if it is greater than 100, then the initialization section can have the following code:
if(errID >100)
error('The error ID is too large');
end
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