Composite Signals
To simplify model appearance, combine individual signals into composite signals using these techniques:
Virtual buses
Nonvirtual buses
Mux signals
Concatenated signals
For a detailed comparison of composite signals, see Types of Composite Signals.
Virtual buses meet most modeling requirements for combining signals into a composite signal and give you flexibility for combining different types of signals.
Blocks
Functions
Tools
| Bus Editor | Create, modify, and manage Simulink.Bus objects |
| Model Explorer | View, modify, and add elements of Simulink models, Stateflow charts, and workspace variables |
Topics
Composite Signal Basics
To reduce visual complexity in a model, combine signals into a composite signal.
Bus Basics
Group Signal Lines into Virtual Buses
Combine signals into virtual buses, which only affect visual appearance.
Display information about buses, such as signal hierarchy and whether the bus is virtual or nonvirtual.
Identify the blocks that support buses as inputs.
Simplify Subsystem and Model Interfaces with Buses
Use In Bus Element and Out Bus Element blocks for bus inputs and outputs.
Change the order and hierarchy of nested buses and their elements.
Replace Values of Bus Elements
Use a Bus Assignment block to assign values to elements of a bus.
Specify Initial Conditions for Bus Signals
Specify bus element values as initial conditions for buses.
Identify Automatic Bus Conversions
Recognize modeling patterns that cause hidden Bus To Vector and Signal Conversion blocks.
Share and Reuse Bus-Routing Blocks
Share blocks that create or interact with buses using subsystem references or custom libraries.
Trace Connections Using Interface Display
Display interfaces to trace signals through the nested levels, annotate signal characteristics, and view units associated with signals.
Bus Objects
Specify Bus Properties with Simulink.Bus Objects
Understand Simulink.Bus object uses and
implementation.
Create Bus Objects Programmatically
Use functions and classes to define Bus objects and bus
elements, create bus objects from blocks, or create Bus objects
from MATLAB® data.
Customize Bus Object Import and Export
Customize the Bus Editor import and export commands by writing MATLAB functions that provide the desired capabilities. Register these functions using the Simulink® Customization Manager.
Nonvirtual Buses
Convert virtual buses to nonvirtual buses, which affect simulation and code generation.
Modify Sample Times for Nonvirtual Buses
Make the sample time of signals the same so that you can group them in a nonvirtual bus.
Generate Code for Nonvirtual Buses
Code generation uses a structure to represent a nonvirtual bus. You can control data types of initial condition structure fields.
Inspect Generated Code for Nonvirtual Buses
Find nonvirtual buses in generated code for a simple model.
Nonvirtual Buses at Model Interfaces
Connect nonvirtual buses to inputs and outputs of referenced models.
Arrays of Buses
Combine Buses into an Array of Buses
Streamline a model by combining nonvirtual buses that have the same bus type
(use the same Bus object) into an array of buses.
Use array of buses in a model, load array of bus data, and log array of buses.
Set up your model to use an array of buses to select signals, assign values to a signal, perform iterative processing, log and load signals, and initialize signals.
Convert Models to Use Arrays of Buses
Convert an existing model that does not use arrays of buses to use arrays of buses.
