How to Programmatically replace blocks in Simulink

I have a model with hundreds of blocks from an old library that I want to replace.

I've made a dummy model. "Version 2" inside the model is the goal. I've done 3 by hand just for clarity.

I want to Replace all Step blocks with Constant blocks. I also want to take the Label of the Step block, and it to the Constant Value of the new Constant block.

There's a couple functions that could work that I've added to the script.

Let me know if you have ideas!

Answer 1

[Shadaab Siddiqie]

Form my understanding you want to replace few blocks in your model with another blocks. You can do this using replace_block like so:

%Load the model sldemo_clutch.
openExample('sldemo_clutch');
%In the 'Unlocked' subsystem, replace blocks whose Gain value is bv with Integrator blocks.
replace_block('sldemo_clutch/Unlocked','Gain','bv','Integrator');

If you want to replace block in model with block from another model you can refer pil_block_replace.

[Ramae Smith]

Thanks, this adresses the repalcement aspect.

Answer 2

[Ramae Smith]

My colleague figured it out. The flaw in this code is that it works one block at a time. Ideally I wanted to replace and relabel all of the step blocks in my model at once.

① Get the name of the Step block

paramValue = get_param ('untitled / Step','Name');

② Convert the Step block to the Constant block

RepNames = replace_block ('untitled','Step','Constant');

(3) Set the value value of the converted Constant block to the name of the Step block.

set_param ('untitled / Step','Value', paramValue);