To resolve this issue you can follow the below approches:
Approach 1: You can use a Subsystem Instead of a Model Reference:
- Convert the logic in Model 1 into a subsystem.
- Place this subsystem directly in Model 2.
- This way, Simulink generates integrated code, and the signals will be connected as expected in the generated code.
Approach 2: Explicitly Connect Models in Application Code:
- If you need to keep the Model Reference structure, you must manually connect the outputs of Model 1 to the inputs of Model 2 in your application code after code generation.
- This means, after calling the Model 1 step function and getting its outputs, you must assign those outputs as inputs to Model 2 before calling Model 2’s step function.
You can refer to the following links for more information on reusable Library Subsystem
