Tune “VariableName” of “From Workspace” block

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Hello, I’m building a realtime app with simulink (Simulink Realtime + App Designer) and I want to be able to tune the data loaded by a “From Workspace” block before running the model. The issue is the block parameter is non-tunable so I get the following warning: “Parameter ‘VariableName’ of ‘Model’ is non-tunable but refers to tunable variables”… I read here (https://it.mathworks.com/help/slrealtime/ug/tuning-block-parameters-and-model-parameters.html) that one can tune non-tunable block parameters defining Simulink objects, which is exactly what I’m doing but it’s not working. Can anyone help? Thank you.

Accepted Answer

Fangjun Jiang
Fangjun Jiang on 8 Feb 2024
"Tune" usually means to change the value while the simulation is running, like a Gain value. What you need doesn't sound like "tune", but rather change the variable name before the simulation starts. To do that, you can use set_param('FromBlockPath','VariableName','MyVariable')
Or, you can change the value of the variable in the workspace, but not to change the variable name of the From Workspace block.
  9 Comments
Enzo Yacometti
Enzo Yacometti on 9 Feb 2024
Thank you. I wasn’t aware I could pass an array as breakpoint input to a LUT to get an array as output. Cheers!

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