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Add structure type represented by Simulink.Bus in Simulink interface dictionary

Since R2022b



dataType = addStructType(dictObj,dtName) adds a Simulink.Bus type with the specified name to the dictionary.


dataType = addStructType(dictObj,dtName, SimulinkBus=busObj) adds a structure type with the specified name, dtName, that mirrors the specified Simulink.Bus object, busObj, to the dictionary.


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To add a Simulink.Bus type with the specified name to the dictionary, use the addStructType function. For an example that shows more of the workflow for related functions, see Create and Configure Interface Dictionary.

% open interface dictionary
dictName = 'MyInterfaces.sldd';
dictAPI =;

% add an enumerated type
myEnumType1 = addEnumType(dictAPI,'myColor');
myEnumType1.addEnumeral('RED', '0', 'Solid Red');
myEnumType1.addEnumeral('BLUE', '1', 'Solid Blue');
myEnumType1.StorageType = 'int16';

% add a value type that uses the enum type as its data type
myValueType1 = addValueType(dictAPI, 'myValueType1');
myValueType1.DataType = 'int32';
myValueType1.Dimensions = '[2 3]';
myValueType1.DataType = myEnumType1;

%% add a structured type 
myStructType1 = addStructType(dictAPI, 'myStructType1');
structElement1 = myStructType1.addElement('Element1');
structElement1.Type.DataType = 'single';
structElement1.Type.Dimensions = '3';
structElement2 = myStructType1.addElement('Element2');
structElement2.Type = myValueType1;
% or
structElement2.Type = 'ValueType: myValueType1';

This example adds a StructType type that mirrors an existing Simulink.Bus object to the Simulink interface dictionary, MyInterfaces.sldd.

% open interface dictionary
dictName = 'MyInterfaces.sldd';
dictAPI =;

% create Simulink.Bus object and add elements
simBusObj = Simulink.Bus;
busElement1 = Simulink.BusElement;
busElement1.Name = 'MyBusElement1';
busElement1.DataType = 'single';
simBusObj.Elements(1) = busElement1;
busElement2 = Simulink.BusElement;
busElement2.Name = 'MyBusElement2';
simBusObj.Elements(2) = busElement2;

% add structure type based on simBusObj
myNewStructType = addStructType(dictAPI,'StructFromSimBus',SimulinkBus=simBusObj)
myNewStructType = 
  StructType with properties:
           Name: 'StructFromSimBus'
    Description: ''
       Elements: [1×2 Simulink.interface.dictionary.StructElement]
          Owner: [1×1 Simulink.interface.Dictionary]

Input Arguments

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Interface dictionary, specified as a Simulink.interface.Dictionary object. Before you use this function, create or open dictObj by using Simulink.interface.dictionary.create or

DataType definition name in DataTypes property array of dictObj, specified as a character vector or a string scalar.

Example: "airSpeed"

Bus type object, specified as a Simulink.Bus object.

Output Arguments

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Structure type object, returned as Simulink.interface.dictionary.StructType object containing elements, with Simulink.Bus as the underlying implementation.

Version History

Introduced in R2022b