Model initialization from a callback in the mask of simulink Block

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Vamsinag Gunti 2019-8-21

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https://ww2.mathworks.cn/matlabcentral/answers/476970-model-initialization-from-a-callback-in-the-mask-of-simulink-block

回答： Fangjun Jiang 2019-8-21

Hi Everyone,

I am trying to read the compiled sample time of a Block in its mask through a callback connected to a button in the mask of the block. But before I read the Compiled Sampletime, it is necessary for me to initialize the Model, for which I have written the following command in my callback:

set_param(bdroot,'SimulationCommand','Update')

But I get the following error:

I tried another way of executing the same, and yet I am presented with the same error.

evalin('base', 'set_param(bdroot,''SimulationCommand'',''Update'')')

What is it that I am doing wrong?

Thanks in advance :)

Regards,

Vamsi

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Fangjun Jiang 2019-8-21

From the error message, it looks like that your block is a library link. Can you first try to break the link and test if a callback of model update can be done from a mask? Library link sometimes can make things complicated. Try to put that aside first.

Vamsinag Gunti 2019-8-21

Hi Fangjun Jiang,

My Block is in a library that I use in another Model. I broke the Library Link and the tested it. The Model could be updated from the Mask. So the Problem is the Library Link.

Could you please elaborate on this issue? What has the Library Link to do with this?

Thanks in advance

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回答（1 个）

Fangjun Jiang 2019-8-21

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/476970-model-initialization-from-a-callback-in-the-mask-of-simulink-block#answer_388509

There are a few terms involved here. You need to try it out to see if it is possible to achieve what you desire to do. The point is that you can't self-modify the library block except what is allowed as "Parameterized links"

Dynamic Masked Subsystem

web(fullfile(docroot, 'simulink/ug/create-dynamic-masked-subsystems.html'))

Parameterized Links and Self-Modifiable Linked Subsystems

web(fullfile(docroot, 'simulink/ug/parameterized-links-and-self-modifiable-linked-subsystems.html#bu9117h'))