State Writer

Write to a block state

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  • Library:

  • Simulink / Signal Routing

  • State Writer block

Description

The State Writer block sets the state of a supported state owner block. When creating a library block with a State Writer block also include the state owner block.

Add a State Writer block to your model from the Simulink® Library Browser.

State Writer blocks can write state to these state owner blocks:

  • Discrete State-Space

  • Discrete-Time Integrator

  • Delay

  • Unit Delay

  • Discrete Transfer Fcn

  • Discrete Filter

  • Discrete FIR Filter

  • Integrator

  • Second-Order Integrator

  • Conditional subsystem blocks such as Enabled Subsystem, Triggered Subsystem, and Function-Call Subsystem.

  • S-Function with multiple discrete states.

    To configure an S-Function block as a state owner block, exactly one data type work vector must be declared as discrete state vector using ssSetDWorkUsedAsDState and named using ssSetDWorkName or ssSetDWorkRTWIdentifier in mdlInitializeSizes.

Ports

Input

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State value written to a state owner block.

When writing to a state owner block with an input scalar, the scalar value is expanded to match the dimension of the state. All elements of the state are set to the same value.

Data Types: single | double | half | int8 | int16 | int32 | int64 | uint8 | uint16 | uint32 | uint64 | fixed point

Parameters

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Show the state owner block whose state this block is writing. To change the state owner block, select a block from the State Owner Selector Tree.

Programmatic Use

Block Parameter: StateOwnerBlock
Type: character vector
Value: '' | '<model path/block name>'
Default: ''

Model Examples

Working with the Initialize Function, Reset Function, and Terminate Function Blocks

Working with the Initialize Function, Reset Function, and Terminate Function Blocks

Use the Initialize Function, Reset Function, and Terminate Function blocks to read and write states in a Simulink model.

Open Model
Reading and Writing States with the Initialize Function and Terminate Function Blocks

Reading and Writing States with the Initialize Function and Terminate Function Blocks

In this example, the Initialize Function block uses the State Writer block to set the initial condition of a Discrete Integrator block to 10.

Open Model

Block Characteristics

Data Types

Boolean | bus | double | enumerated | fixed point | half | integer | single

Direct Feedthrough

no

Multidimensional Signals

yes

Variable-Size Signals

no

Zero-Crossing Detection

no

Extended Capabilities

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

Fixed-Point Conversion
Design and simulate fixed-point systems using Fixed-Point Designer™.

See Also

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Topics

Simulink Documentation

Support