Block Authoring Basics

Principles of extending modeling functionality of Simulink^® by authoring blocks

Simulink allows you to extend the built-in modeling functionality by creating your own blocks.

Create a new Simulink block for your needs if the built-in library does not provide a suitable block. You can create new functionality using a MATLAB^® function rather than a Simulink block diagram.

Blocks

Function Caller	Call a Simulink function
Level-2 MATLAB S-Function	Use Level-2 MATLAB S-function in model
MATLAB Function	Include MATLAB code in Simulink models
MATLAB System	Include System object in model
S-Function	Include S-function in model
S-Function Builder	Integrate C or C++ code to create S-functions
Simulink Function	Define a function using Simulink blocks
Fcn	Apply specified expression to input

Topics

Choose Tools to Create Reusable Blocks in Simulink Using C/C++ or MATLAB
Select tools to create reusable Simulink blocks using C/C++ or MATLAB based on your modeling requirements.
Types of Custom Blocks
Learn about the capabilities of custom blocks.
Design and Create a Custom Block
Build a custom block using a Level-2 MATLAB S-function.
Comparison of Custom Block Functionality
Compare and contrast the features of different custom blocks types.

Related Information

Create Custom Library
Add Libraries to Library Browser