Event Functions

Customize default model Initialize and terminate methods

Model dynamic startup and shutdown behavior by adding custom routines to the default model initialize and terminate methods. During simulation, control when the methods execute with events. Create functions to reinitialize blocks with initial values.

Blocks

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Custom Routines

Initialize Function	Execute subsystem on model initialize event
Reinitialize Function	Execute subsystem on model or subsystem reinitialize event (Since R2022a)
Reset Function	Execute subsystem on model reset event
Terminate Function	Execute subsystem on model terminate event

Readers and Writers

State Reader	Read a block state
State Writer	Write to a block state
Parameter Writer	Write to block parameter or variable
Data Store Read	Read data from data store
Data Store Write	Write data to data store

Model Settings

Parameter Writer block validation

Globally or locally enable parameter validation (Since R2023a)

Topics

Common Uses of the Initialize Function Block
This example shows how to use the Initialize Function block to perform these common initialization actions.
Using Initialize, Reinitialize, Reset, and Terminate Functions
Set the state of a block with an initialize function-call event. Reset block states with a reinitialize or reset function-call event. Save the state of a block with a terminate function-call event.
Create Test Harness to Generate Function Calls
Schedule initialize, reset, and terminate function-call events.
Initialize, Reset, and Terminate State of Simulink Block
This example shows how to use the Initialize Function, Reset Function, and Terminate Function blocks to respond to events in a Simulink model.
Initialize and Reset Parameter Values
Use the Parameter Writer block to change block parameter values during model simulation.
Working with the Reinitialize Function Block
This example shows how to use a Reinitialize Function block to reset the initial condition of a Discrete-Time Integrator block for every function-call event received by a subsystem.
Initialize, Reinitialize, Reset, and Terminate Function Limitations
Determine whether Initialize Function, Reinitialize Function, Reset Function, or Terminate Function blocks support a block, feature, or modeling pattern.
Prepare Sensor and Controller Models in a Distributed Monitoring System for Code Generation
Prepare models to generate code for deployment on target hardware platforms.
Common Uses of Parameter Writer Block
This example shows how to use the Parameter Writer block to change block parameter and variable values.
Use Parameter Writer Block to Schedule PID Controller Gain
Use Parameter Writer blocks to schedule PID controller gain coefficients for a nonlinear system.
Use Connectors Tool to Visualize Relation Between Blocks
Use Connectors tool to visualize relation between Simulink^® functions and their function caller blocks, reader and writer blocks or blocks which execute based on events.
Access Data Store at Higher Level in Model Hierarchy
Access data store defined at a higher-level in the model hierarchy.