For the variable to be exported along with the FMU for the lookup tables along with “Support Tunable Size” option, the variable must be a tunable “Simulink.Parameter” object with its Storage class set to “ExportedGlobal”.
Also check the “Argument” checkbox corresponding to the Tunable Parameter in the “Model Workspace” section of the “Model Explorer”.
The steps mentioned in the following documentation link can be followed to create a Tunable Parameter for the ‘Lookup Table’ and the fields can be populated as shown in the “Tunable Table Size in the Simulation and the Generated Code” section of the documentation link:
Also, the “Parameter ‘N1’ of <model/lookuptable> is non-tunable but refers to tunable variables” warning can be resolved by using a scalar integer value instead of Tunable parameter for the “Tunable Size” attribute in the Lookup Table block because as per documentation the “Tunable Size” attribute refers to the maximum size of the Lookup table if the table is defined to be “Tunable” in size.
Hence, the “Tunable Size” value must be a scalar integer referring to the maximum size the “Lookup Table” can be, and the “Tunable Parameters” can be used for the “Table Data” and the “Breakpoints” attributes of the Lookup Table.
When the “Tunable Parameters” or data is referenced in the “Lookup Table” ‘s “Table Data” or “Breakpoints” section the parameters will be exported while generating FMU.
Also ensure that the “Tunable Parameters” Defined in the model are displayed in the “Parameters” tab while exporting to the “Standalone FMU”.
For more information the following documentation links can be referred:
- https://www.mathworks.com/help/simulink/slref/1dlookuptable.html
- https://www.mathworks.com/help/simulink/slref/1dlookuptable.html#f7-890882_sep_mw_a7e379c0-c70f-44d1-b2a2-37432f927f55
Hope this helps.
