Persistent Variable Write

Write persistent variable value to target computer

Since R2022a

Libraries:
Simulink Real-Time / Target Management

Description

The Persistent Variable Write block writes a value to the selected persistent variable when the real-time application starts and stops. The variable value persists when the target computer is shut down.

Use the getPersistentVariables function and setPersistentVariables function to access the persistent variable values on the target computer.

Examples

Apply Persistent Variables in Real-Time Applications

Apply Simulink Real-Time persistent variables to preserve variable values when the real-time application stops or the target computer is powered off.

Open Script

Ports

Input

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Data — Persistent variable input data
variable data

The data type of the Persistent Variable Write block input port is inherited from its input signal. The signal can be any dimension.

The block can take a complex number. The complexity of the Persistent Variable Write block input port is inherited from its input signal.

Parameters

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Variable name — Name of persistent variable
`Variable1` (default) | character vector | string

The Variable name parameter provides the name of the persistent variable. Use this name to access the variable in the structure of variable values retrieved from the target computer by using the getPersistentVariables function.

Programmatic Use

Block Parameter: varName

Extended Capabilities

C/C++ Code Generation
Generate C and C++ code using Simulink® Coder™.

Version History

Introduced in R2022a