Analyze Models Containing Simulink Functions Using Model Slicer

This example shows you how to analyze models that contain Simulink® functions using Model Slicer. You can visualize the inter-dependency of a Simulink function and Function Caller by adding them as starting points in Model Slicer. For more information on Simulink functions, see Simulink Functions Overview.

In this example, you visualize inter-dependencies between a Simulink Function and a Function Caller block in the upstream and downstream directions. The Simulink model slicer_simulink_func.slx contains the Simulink Function Caller subsys_calc.func_calc(), and its corresponding Simulink Function is defined in the subsys_calc subsystem.

Open the Model

1. Open the model slicer_simulink_func.

open_system('slicer_simulink_func')

2. On the Apps tab, under Model Verification, Validation, and Test gallery, click Model Slicer.

Upstream Highlighting

1. In the Model Slicer window, set Signal propagation to upstream.

2. In the slicer_simulink_func model, select output Out1. Right-click Out1 and in the Model Slicer app section , select Add as Starting Point button . Model Slicer highlights the dependency of output Out1 in the upstream direction.

3. Double-click the Simulink Function1 and subsys_calc subsystem and you can observe the dependencies. Output Ou1 traces back to the Function Caller block subsys_calc.func_calc, the corresponding Simulink function for the block is defined in subsys_calc.

Downstream Highlighting

1. In the Model Slicer window, click clear all for Starting points and set the Signal propagation to downstream.

2. In the subsys_calc subsystem, select the ArgIn input parameter u as the starting point. Right-click u, and under Model Slicer app section, select Add as Starting Point button. Model Slicer highlights the dependency of input u in the downstream direction from Function Caller subsys_calc.func_calc to the Simulink Function defined under susbys_calc.