Include System object in model
The MATLAB System block brings existing System objects (based on matlab.System) into Simulink®. It also enables you to use System object authoring APIs to develop new blocks for Simulink.
For interpreted execution, the model simulates the block using the MATLAB® execution engine.
For code generation, the model simulates the block using code generation (using the subset of MATLAB® code supported for code generation). The MATLAB System block supports only a subset of the functions available in MATLAB. See Functions and Objects Supported for C and C++ Code Generation — Alphabetical List for a complete list of functions. These functions include those in common categories, such as:
Array vs. Matrix Operations, like plus, minus, and power
To use the MATLAB System block, you must first have a new System object™ or use an existing one. For more information, see System Object Integration.
The MATLAB System block accepts inputs of any type that Simulink supports, including enumerated types. For more information, see Data Types Supported by Simulink.
For information on fixed-point support for this block, see Code Acceleration and Code Generation from MATLAB.
The MATLAB System block supports Simulink frames. For more information, see Sample- and Frame-Based Concepts.
Specify the full name of the user-defined System object class without the file extension. This entry is case sensitive. The class name must exist on the MATLAB path.
You can specify a System object name in one of these ways:
Enter the name in the text box.
Click the list arrow attached to the text box. If valid System objects exist in the current folder, the names appear in the list. Select a System object from this list.
Browse to a folder that contains a valid System object. If the folder is not on your MATLAB path, the software prompts you to add it.
If you need to create a System object, you can create one from a template by clicking New....
Select one of these options.
Starts MATLAB Editor and displays a template for a simple System object using the fewest System object methods.
Starts MATLAB Editor and displays a template for a more advanced System object using most of the System object methods.
Starts MATLAB Editor and displays a file that contains utilities for customizing the block for Simulink. This is the same file available in MATLAB when you select New... > System Object > Simulink Extension.
After you save the System object, you can enter the name in the System object name text box.
Use the full name of the user-defined System object class name. The block does not accept a MATLAB variable that you have assigned to a System object class name.
See Block-Specific Parameters for the command-line information.
Select the simulation mode.
Default: Code generation
On the first model run, simulate and generate code for MATLAB System block using only MATLAB functions supported for code generation. If the structure of the block does not change, subsequent model runs do not regenerate the code.
Simulate model using all supported MATLAB functions. Choosing this option can slow simulation performance.
After you assign a valid System object class name to the block, the next time you open the block dialog box, the parameter is visible. This parameter appears for every MATLAB System block. You cannot remove it.
If the block has no tabs, this parameter appears at the bottom of the dialog box.
If the block has multiple tabs, this parameter appears at the bottom of the first tab of the dialog box.