How to set Simulink block parameter equal to the value of a signal?

I have a tcp client in the subsystem and I would like to set the ip and port value, according to the subsystem input signals. In this way, I would be able to configure my client directly through the input signals. It's something possible?

Answer 1

[Harikrishnan Balachandran Nair]

Hi Davide,

I understand that you are trying to change the block parameters of a certain block, during simulation, depending on the value of the input signal.

This is achievable using the 'set_param' function in matlab. 'set_param' function can be used to set the block parameter values programmatically. You can have a 'matlab function' block in your model ,prior to the subsytem , inside which you can execute the 'set_param' function to set the block parameter values according to your need.

However , it is not considered a best practice to change the block parameter values during runtime. You can refer to this article to get a better understanding on this : https://blogs.mathworks.com/simulink/2011/03/08/how-do-i-change-a-block-parameter-based-on-the-output-of-another-block/

[Davide Fasciani]

Thanks for the reply, I tried to follow your suggestions, but simulink gave me an error "Function 'set_param' not supported for generating the code."

[Harikrishnan Balachandran Nair]

You may include the following line of code to avoid this error.

coder.extrinsic('set_param');

Hope this helps.