I faced a similar issue while generating code from an ‘s-function’ block using PLC Coder. I came across a previous MATLAB Answers post, where it was mentioned that PLC Coder does not support generating code from ‘s-function’ blocks, and that the error message might be misleading: https://www.mathworks.com/matlabcentral/answers/725-can-i-generate-plc-code-from-an-s-function-using-plc-coder.
As a workaround, you can try using the ‘MATLAB function block to implement the ‘s-function’ block functionality, since PLC Coder supports code generation from the ‘MATLAB function’ block.
Additionally, if you wish to know more about how ‘s-functions’ can be inlined, please refer to the following documentation link:
I hope this helps.
