Visualize Signals in Simulink Real-Time Models
When you use the external mode interface, you can view signal data from the simulation on Simulink® Scope blocks in the model.
You can also use the Simulation Data Inspector to view signal data during the simulation for signals that you mark for logging in the Simulation Data Inspector.
To log signal data and view it in the Simulation Data Inspector after the simulation run, use the Simulink Real-Time™ File Log block.