String to Enum

R2026b

Input string signal to enumerated signal

• 

String to Enum block

To add a block to a model, double-click the canvas and start typing the block name. Then, select the block from the list.

Libraries:
Simulink / String

Description

The String To Enum block converts the input string signal to an enumerated signal. To use this block, create an enumeration class in the current folder and use that class name in the Output data type parameter.

The String to Enum block generates efficient code for enumerations by generating a shared function for each enumeration type. For more information on enumerations, see Simulink Enumerations.

Ports

Input

Port_1 — Input string signal

scalar

Input string signal, specified as a scalar.

Data Types: string

Output

Output 1 — Enumerated number

scalar

Enumerated number associated with the input string, specified as a scalar.

Data Types: enumerated

Parameters

Output data type — Output data type

SlDemoSign (default) | <data type expression>

Use a data type object, for example, Simulink.IntEnumType.

Click the Show data type assistant button to display the Data Type Assistant, which helps you set the data type attributes. See Specify Data Types Using Data Type Assistant for more information.

Programmatic Use

Block Parameter: OutDataTypeStr

Type: character vector

Values: 'Enum: SlDemoSign' | <data type expression>

Default: 'Enum: SlDemoSign'

Mode — Category of data

Enumerated (default) | <data type expression>

Use a data type object, for example, Simulink.IntEnumType.

• Enumerated — Enumerated data class object.

• <data type expression> — Expressions that evaluate to data types. Selecting Expression enables a second menu/text box to the right, where you can enter the expression.

Dependency

Clicking the Show data type assistant button enables this parameter.

Block Characteristics

Data Types	enumerated | string
Direct Feedthrough	yes
Multidimensional Signals	no
Variable-Size Signals	no
Zero-Crossing Detection	no

Programmatic Use: Add Block

To add the block programmatically, use the add_block function with one of these library block paths as the source.

"simulink/String/String to Enum"

Example: add_block("simulink/String/String to Enum","myModel/myBlock",MakeNameUnique="on")

Extended Capabilities

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

Version History

Introduced in R2018a

R2024b: String to Enum block generates more efficient code

The String to Enum block now generates more efficient code for enumerations by generating a shared function for each enumeration type. Prior to R2025a, this block generated inlined code for enumerations.