The generated code will not log any data as it would in Simulink. Here is the relevant documentation from the Embedded Coder User Guide:
Data Logging Limitations
• To Workspace blocks and Scope blocks are ignored when Simulink Coder generates code for a referenced model. The resulting code is the same as if the blocks did not exist. In some cases for models with Scope block and MAT-file logging enabled, the code generator produces an extra PWork in the model's DWork structure.
• Code generated for referenced models cannot log data to MAT-files. If you enable data logging for a referenced model, Simulink Coder disables the option before code generation and re-enables it afterward.
• If you log states for a model that contains referenced models, the ordering of the states in the output is determined by block sorted order, and might not match between simulation output and generated code MAT-file logging output.
