How to set default value for instance parameters​/Simulink.​Parameter?

When using a ModelReference block, all instance parameters default to value [], even though they are define using a Simulink.Parameter object with a defined Value field (I expected the Value field to serve as default value for the specified instance parameter).

How can I set a default value for an instance parameter?

Please note that I sometimes want to use the default value, and sometimes don't. If I don't use a default value, I want to be able to programatically define the value of the parameter using this guide: https://de.mathworks.com/help/simulink/ug/parameterize-referenced-models-example.html

Answer 1

[Mark McBroom]

You will need to configure the parameter as a model argument and then specify values for each isntance of the model block. It is a bit tricky. This link gives step by step instructions.

https://www.mathworks.com/help/simulink/ug/parameterize-referenced-models.html

[Malte Kliemann]

@Mark McBroom Thanks. So, if I understand this correctly, then unchecking the Argument checkbox should have the desired effect, right?

I did that, and indeed a default value is now used instead of []. However, I need the parameter to be an Argument, because I (sometimes) want to programatically set the value of the parameter using this guide: https://de.mathworks.com/help/simulink/ug/parameterize-referenced-models-example.html

Is there any other way to get this behavior?

[Mark McBroom]

I don't think there is a way for a given model to sometimes have the parameter passed as an argument and other times have a default value used.

Thanks.

Mark.

[Paul]

That’s really unfortunate. I’ve been wanting this behavior for some time.