Signals transmit data between two blocks in a simulation. The data could be the calculated output of a block, or simply a message. The value of signals are calculated at all points during the simulation time. You can display the signal data and properties during and after simulation, see the real-time values on a block diagram, or you can log the values as variables in the workspace. Also, you can export the signals to a file or to a workspace to investigate further.
You can control the mathematical behavior of a model by specifying signal characteristics such as numeric data type, initial value, and value range.
|Signal Specification||Specify desired dimensions, sample time, data type, numeric type, and other attributes of signal|
|Bus to Vector||Convert virtual bus to vector|
|IC||Set initial value of signal|
|Probe||Output signal attributes, including width, dimensionality, sample time, and complex signal flag|
|Rate Transition||Handle transfer of data between blocks operating at different rates|
|Signal Editor||Display, create, edit, and switch interchangeable scenarios|
|Signal Conversion||Convert signal to new type without altering signal values|
|Weighted Sample Time||Support calculations involving sample time|
|Width||Output width of input vector|
|Convert model to use only explicit signal resolution|
|Import signal data and properties from Signal Builder block to Signal Editor block|
|Start Signal Editor|
|Specify instance-specific properties of signal or discrete state|
|Specify properties of signals based on application-specific value types|
|Trace signals in a model|
|Highlight tracing results|
|Remove highlighted tracing results|
|Provide tracing information as graph for structure analysis|
|Signal Properties||View and edit signal properties|
|Instrumentation Properties||View and edit logging and visualization properties for logged signal|
|Property Inspector||Edit parameters and properties for any Simulink model element|
|Model Data Editor||Inspect and edit data items (signals, parameters, and states) in a table that you can sort, group, and filter|
Get Started with Signals
- Investigate Signal Values
Initialize, access, and view the values that signals have during a simulation run.
- Specify Signal Ranges
Specify the minimum and maximum value that a signal can attain during simulation. Fully specify your design and optimize data types and the generated code by specifying the minimum and maximum value that a signal can attain during simulation.
- Determine Signal Dimensions
Inspect and control signal dimensionality.
- Initialize Signals and Discrete States
Some systems contain signals and states whose initial values you must specify, for example, the starting position and velocity of a bouncing ball.
- Configure Signals as Test Points
Use test points to exclude signal lines from optimizations which enables you to access the simulation data.
- Specify Application-Specific Signal Properties
Specify attributes for application-specific value types, such as wind velocity.
Display Signal Properties
- Highlight Signal Sources and Destinations
Trace a signal to its source or destination while debugging or exploring a model.
- Display Port Values for Debugging
Display the values of block outputs on the block diagram during simulation.
- Display Signal Attributes
Improve model readability by displaying signal attributes, such as data types and dimensions, in the block diagram.
- Signal Label Propagation
Name a signal to identify and access it more easily. Take advantage of signal label propagation to reduce the effort of naming a signal that crosses system boundaries.
- Trace Connections Using Interface Display
Display interfaces to trace signals through the nested levels, annotate signal characteristics, and view units associated with signals.