How can I create a custom structure,and create a variable of this structure? #3031

1924006212 · 2025-03-06T06:17:04Z

1924006212
Mar 6, 2025

Type of issue

Current Behavior

protected override NodeStateCollection LoadPredefinedNodes(ISystemContext context)
{
    NodeStateCollection nodeStateCollection = new NodeStateCollection();
    //FolderState root = CreateFolder(null, null, "Root");
    //root.AddReference(ReferenceTypes.Organizes, true, ObjectIds.ObjectsFolder); // 将节点添加到服务器根节点
    //root.EventNotifier = EventNotifiers.SubscribeToEvents;
    ushort namespaceIndex = base.NamespaceIndex;
    FolderState root2 = CreateFolder(null, null, "Root2");
    root2.AddReference(ReferenceTypes.Organizes, true, ObjectIds.ObjectsFolder); // 将节点添加到服务器根节点
    root2.EventNotifier = EventNotifiers.SubscribeToEvents;
    
    
    BaseObjectState PLC = new BaseObjectState(root2);
    PLC.SymbolicName = "PLC_B";
    PLC.TypeDefinitionId = ObjectTypeIds.BaseObjectType;
    PLC.NodeId = new NodeId("ns=" + namespaceIndex + $";s={PLC.SymbolicName}");
    PLC.BrowseName = new QualifiedName("CustomObject", namespaceIndex);
    PLC.DisplayName = new LocalizedText("en-US", "PLC_B");
    PLC.EventNotifier = EventNotifiers.None;
    PLC.AddReference(ReferenceTypes.Organizes, true, ObjectIds.ObjectsFolder);
    PLC.EventNotifier = EventNotifiers.SubscribeToEvents;

    //BaseDataVariableState PLCStruct = new BaseDataVariableState(root2);
    //PLCStruct.SymbolicName = "PC-PLCStruct";
    //PLCStruct.TypeDefinitionId = DataTypeIds.vari;
    //PLCStruct.NodeId = new NodeId("ns=" + namespaceIndex + $";s={PLCStruct.SymbolicName}");
    //PLCStruct.BrowseName = new QualifiedName("CustomObject", namespaceIndex);
    //PLCStruct.DisplayName = new LocalizedText("en-US", "PC-PLCStruct");
    //PLCStruct.AddReference(ReferenceTypes.Organizes, true, ObjectIds.OPCBinarySchema_TypeSystem);
    //nodeStateCollection.Add(PLCStruct);


    BaseDataVariableState Struct = new BaseDataVariableState(root2);
    Struct.SymbolicName = "PC-PLCStruct";
    Struct.TypeDefinitionId = VariableTypes.DataTypeDescriptionType;
    Struct.NodeId = new NodeId("ns=" + namespaceIndex + $";s={Struct.SymbolicName}");
    Struct.BrowseName = new QualifiedName("CustomObject", namespaceIndex);
    Struct.DisplayName = new LocalizedText("en-US", "PC-PLCStruct");
    Struct.DataType=DataTypeIds.String;
    Struct.ValueRank= ValueRanks.Scalar;
    Struct.Value = "CustomSensorData";
    Struct.AddReference(ReferenceTypes.HasDescription, true, ObjectIds.DefaultBinary);
    Struct.AddReference(ReferenceTypes.Organizes, true, ObjectIds.OPCBinarySchema_TypeSystem);
    nodeStateCollection.Add(Struct);

    BaseObjectState customObject = new BaseObjectState(root2);
    customObject.SymbolicName = "CustomObject";
    customObject.TypeDefinitionId = DataTypes.BaseDataType;
    customObject.NodeId = new NodeId("ns=" + namespaceIndex + ";s=CustomObject");
    customObject.BrowseName = new QualifiedName("CustomObject", namespaceIndex);
    customObject.DisplayName = new LocalizedText("en-US", "Custom Object");
    customObject.EventNotifier = EventNotifiers.None;
    AddRootNotifier(customObject);

    BaseDataVariableState<Person> customVariable = new BaseDataVariableState<Person>(null);
    customVariable.SymbolicName = "CustomVariable";
    //customVariable.TypeDefinitionId = VariableTypeIds.BaseDataVariableType;
    customVariable.NodeId = new NodeId("ns=" + namespaceIndex + ";s=CustomVariablePerson");
    customVariable.BrowseName = new QualifiedName("CustomVariable", namespaceIndex);
    customVariable.DisplayName = new LocalizedText("en-US", "Custom VariablePerson");
    customVariable.DataType = DataTypeIds.Structure;
    customVariable.ValueRank = ValueRanks.Scalar;
    customVariable.AccessLevel = AccessLevels.CurrentReadOrWrite;
    customVariable.UserAccessLevel = AccessLevels.CurrentReadOrWrite;
    customVariable.Historizing = false;
    customVariable.Value = new Person { Name = "John", Age = 30 };
    customObject.AddChild(customVariable);
    AddRootNotifier(customVariable);



    DataTypeState dataType = new DataTypeState
    {
        NodeId = new NodeId("CustomSensorData", NamespaceIndex),
        BrowseName = new QualifiedName("CustomSensorData", NamespaceIndex),
        IsAbstract = false,
        DisplayName= "CustomSensorData"
    };
    dataType.AddReference(ReferenceTypes.HasSubtype, true, DataTypeIds.Structure);
    dataType.AddReference(ReferenceTypes.Organizes, true, DataTypeIds.Structure);
    StructureDefinition definition = new StructureDefinition();
    definition.StructureType= StructureType.Structure;
    definition.DefaultEncodingId = new NodeId("ns=" + namespaceIndex + ";s=Te_pc-plc");
    dataType.AddReference(ReferenceTypes.HasEncoding, false, ObjectIds.DefaultBinary);

    definition.BaseDataType = DataTypeIds.Structure;
    //definition.BaseDataType= StructureType.Structure;
    definition.Fields = new StructureField[]
    {
        new StructureField { Name = "Temperature", DataType = DataTypeIds.Float,ValueRank=-1,IsOptional=false },
        new StructureField { Name = "Pressure", DataType = DataTypeIds.Double ,ValueRank=-1}
    };
    dataType.DataTypeDefinition = new ExtensionObject(DataTypeIds.StructureDefinition, definition); ;
    nodeStateCollection.Add(dataType);
    // 添加数据类型到地址空间
    //AddPredefinedNode(SystemContext, dataType); // 直接使用 DataTypeNode，因为它继承自 NodeState

    //BaseDataVariableTypeState sensorVariable = new BaseDataVariableTypeState
    //{
    //    NodeId = new NodeId("SensorData", NamespaceIndex),
    //    BrowseName = new QualifiedName("SensorData", NamespaceIndex),
    //    DataType = dataType.NodeId, // 引用自定义类型
    //    ValueRank = ValueRanks.Scalar, // 表示这是一个标量值
    //};

    //// 设置初始值
    ////var sensorData = new Dictionary<string, Variant>
    ////{
    ////    { "Temperature", new Variant(25.5f) },
    ////    { "Pressure", new Variant(101.3) }
    ////};
    ////ExtensionObject extObj = new ExtensionObject(dataType.NodeId, sensorData);
    ////sensorVariable.Value = new DataValue(extObj);

    //// 添加变量到地址空间
    //nodeStateCollection.Add(sensorVariable);
    //CreateVariable(root2, null, "sensorVariable", sensorVariable.NodeId, ValueRanks.Scalar, ReferenceTypeIds.HasComponent);


    BaseDataVariableTypeState PC_PLC = new BaseDataVariableTypeState();
    PC_PLC.SymbolicName = "PC_PLC";
    PC_PLC.DataType = dataType.NodeId;
    PC_PLC.ValueRank = ValueRanks.Scalar;
    PC_PLC.SuperTypeId = VariableTypeIds.BaseDataVariableType;
    PC_PLC.NodeId = new NodeId("ns=" + namespaceIndex + $";s={PC_PLC.SymbolicName}");
    PC_PLC.BrowseName = new QualifiedName(PC_PLC.SymbolicName, namespaceIndex);
    PC_PLC.DisplayName = new LocalizedText("en-US", $"{PC_PLC.SymbolicName}");
    PC_PLC.Value = null;
    //AddRootNotifier(PC_PLC);

    CreateVariable(PC_PLC, null, "Temperature", BuiltInType.Float, ValueRanks.Scalar, ReferenceTypeIds.HasComponent);
    CreateVariable(PC_PLC, null, "Pressure", BuiltInType.Double, ValueRanks.Scalar, ReferenceTypeIds.HasComponent);
    //CreateVariable(PC_PLC, null, "托盘号", BuiltInType.UInt32, ValueRanks.Scalar, ReferenceTypeIds.HasComponent);
    //CreateVariable(PC_PLC, null, "交互状态（PLC）", BuiltInType.Byte, ValueRanks.Scalar, ReferenceTypeIds.HasComponent);
    //CreateVariable(PC_PLC, null, "交互状态（上位）", BuiltInType.Byte, ValueRanks.Scalar, ReferenceTypeIds.HasComponent);
    //CreateVariable(PC_PLC, null, "任务号", BuiltInType.UInt16, ValueRanks.Scalar, ReferenceTypeIds.HasComponent);
    //CreateVariable(PC_PLC, null, "备用", BuiltInType.Byte, ValueRanks.Scalar, ReferenceTypeIds.HasComponent);
    //CreateVariable(PC_PLC, null, "托盘数量", BuiltInType.Byte, ValueRanks.Scalar, ReferenceTypeIds.HasComponent);
    //CreateVariable(PC_PLC, null, "托盘类型", BuiltInType.UInt16, ValueRanks.Scalar, ReferenceTypeIds.HasComponent);
    //CreateVariable(PC_PLC, null, "扫码状态", BuiltInType.UInt16, ValueRanks.Scalar, ReferenceTypeIds.HasComponent);
    //CreateVariable(PC_PLC, null, "接口状态", BuiltInType.UInt16, ValueRanks.Scalar, ReferenceTypeIds.HasComponent);
    //CreateVariable(PC_PLC, null, "来源位置", BuiltInType.UInt16, ValueRanks.Scalar, ReferenceTypeIds.HasComponent);
    //CreateVariable(PC_PLC, null, "目标位置", BuiltInType.UInt16, ValueRanks.Scalar, ReferenceTypeIds.HasComponent);
    //CreateVariable(PC_PLC, null, "物料状态", BuiltInType.UInt16, ValueRanks.Scalar, ReferenceTypeIds.HasComponent);

    BaseDataVariableTypeState Scaner = new BaseDataVariableTypeState();
    Scaner.SymbolicName = "扫码器";
    Scaner.DataType = DataTypes.BaseDataType;
    Scaner.SuperTypeId = VariableTypeIds.BaseVariableType;
    Scaner.NodeId = new NodeId("ns=" + namespaceIndex + $";s={Scaner.SymbolicName}");
    Scaner.BrowseName = new QualifiedName(Scaner.SymbolicName, namespaceIndex);
    Scaner.DisplayName = new LocalizedText("en-US", $"{Scaner.SymbolicName}");
    nodeStateCollection.Add(Scaner);

    CreateVariable(Scaner, null, "托盘号", BuiltInType.UInt32, ValueRanks.Scalar, ReferenceTypeIds.HasComponent);
    CreateVariable(Scaner, null, "交互状态（PLC）", BuiltInType.Byte, ValueRanks.Scalar, ReferenceTypeIds.HasComponent);
    CreateVariable(Scaner, null, "交互状态（上位）", BuiltInType.Byte, ValueRanks.Scalar, ReferenceTypeIds.HasComponent);
    CreateVariable(Scaner, null, "任务号", BuiltInType.UInt16, ValueRanks.Scalar, ReferenceTypeIds.HasComponent);
    CreateVariable(Scaner, null, "备用", BuiltInType.Byte, ValueRanks.Scalar, ReferenceTypeIds.HasComponent);
    CreateVariable(Scaner, null, "托盘数量", BuiltInType.Byte, ValueRanks.Scalar, ReferenceTypeIds.HasComponent);
    CreateVariable(Scaner, null, "托盘类型", BuiltInType.UInt16, ValueRanks.Scalar, ReferenceTypeIds.HasComponent);
    CreateVariable(Scaner, null, "扫码状态", BuiltInType.UInt16, ValueRanks.Scalar, ReferenceTypeIds.HasComponent);
    CreateVariable(Scaner, null, "接口状态", BuiltInType.UInt16, ValueRanks.Scalar, ReferenceTypeIds.HasComponent);
    CreateVariable(Scaner, null, "来源位置", BuiltInType.UInt16, ValueRanks.Scalar, ReferenceTypeIds.HasComponent);
    CreateVariable(Scaner, null, "目标位置", BuiltInType.UInt16, ValueRanks.Scalar, ReferenceTypeIds.HasComponent);
    CreateVariable(Scaner, null, "物料状态", BuiltInType.UInt16, ValueRanks.Scalar, ReferenceTypeIds.HasComponent);

    //PC_PLC.AddNotifier(context, new , true, PC_PLC);

    //List<BaseInstanceState> states = new List<BaseInstanceState>();
    //PC_PLC.GetChildren(context, states);
    //foreach (BaseInstanceState state in states)
    //{
    //    //PC_PLC.AddReference(ReferenceTypeIds.HasComponent,true,state.NodeId);
    //    //PC_PLC.RemoveReference(ReferenceTypeIds.Organizes,true,state.NodeId);
    //    //PC_PLC.AddNotifier(context, state.NodeId, true, PC_PLC);
    //}
    //PC_PLC.AddReference(ReferenceTypes.)
    NodeStateCollection predefinedNodes = new NodeStateCollection();
    NodeStateCollection predefinedNodes2 = new NodeStateCollection();
    for (int i = 2000; i < 3000; i++)
    {
       var indexNode= CreateVariable(PLC, null, i.ToString(), PC_PLC.NodeId, ValueRanks.Scalar, ReferenceTypeIds.HasComponent, dataType.NodeId);
        CreateVariable(indexNode, null, "Temperature", BuiltInType.Float, ValueRanks.Scalar, ReferenceTypeIds.HasComponent);
        CreateVariable(indexNode, null, "Pressure", BuiltInType.Double, ValueRanks.Scalar, ReferenceTypeIds.HasComponent);

        //CreateVariable(indexNode, null, "托盘号", BuiltInType.UInt32, ValueRanks.Scalar, ReferenceTypeIds.HasComponent);
        //CreateVariable(indexNode, null, "交互状态（PLC）", BuiltInType.Byte, ValueRanks.Scalar, ReferenceTypeIds.HasComponent);
        //CreateVariable(indexNode, null, "交互状态（上位）", BuiltInType.Byte, ValueRanks.Scalar, ReferenceTypeIds.HasComponent);
        //CreateVariable(indexNode, null, "任务号", BuiltInType.UInt16, ValueRanks.Scalar, ReferenceTypeIds.HasComponent);
        //CreateVariable(indexNode, null, "备用", BuiltInType.Byte, ValueRanks.Scalar, ReferenceTypeIds.HasComponent);
        //CreateVariable(indexNode, null, "托盘数量", BuiltInType.Byte, ValueRanks.Scalar, ReferenceTypeIds.HasComponent);
        //CreateVariable(indexNode, null, "托盘类型", BuiltInType.UInt16, ValueRanks.Scalar, ReferenceTypeIds.HasComponent);
        //CreateVariable(indexNode, null, "扫码状态", BuiltInType.UInt16, ValueRanks.Scalar, ReferenceTypeIds.HasComponent);
        //CreateVariable(indexNode, null, "接口状态", BuiltInType.UInt16, ValueRanks.Scalar, ReferenceTypeIds.HasComponent);
        //CreateVariable(indexNode, null, "来源位置", BuiltInType.UInt16, ValueRanks.Scalar, ReferenceTypeIds.HasComponent);
        //CreateVariable(indexNode, null, "目标位置", BuiltInType.UInt16, ValueRanks.Scalar, ReferenceTypeIds.HasComponent);
        //CreateVariable(indexNode, null, "物料状态", BuiltInType.UInt16, ValueRanks.Scalar, ReferenceTypeIds.HasComponent);
    }
    foreach (var name in Assembly.GetExecutingAssembly().GetManifestResourceNames())
    {
        if (name.EndsWith(".uanodes"))
        {
            predefinedNodes.LoadFromBinaryResource(context, name, Assembly.GetExecutingAssembly(), true);
        }
        if (name.EndsWith(".xml"))
        {
            predefinedNodes.LoadFromXml(context, File.OpenText(name).BaseStream, true);
            //predefinedNodes.lo(context, File.OpenText(name).BaseStream, true);

        }
    }
    foreach (var item in predefinedNodes)
    {
        if(item is NodeState Myitem)
        {
            if (Myitem.NodeClass==NodeClass.DataType)
            {
                Myitem.AddReference(ReferenceTypes.HasSubtype, true, DataTypes.BaseDataType);
                AddRootNotifier(Myitem);
                
            }
        }
        if (item.SymbolicName== "Seeker")
        {
            AddRootNotifier(item);

        }
        //root2.AddNotifier(context, item.NodeId, false, item);

        //BaseObjectState nodeState = new BaseObjectState(root2);
        //nodeState.SymbolicName = item.SymbolicName;
        //nodeState.TypeDefinitionId = item.TypeDefinitionId;
        ////nodeState.TypeDefinitionId = item.;
        //nodeState.ReferenceTypeId = ObjectTypeIds.BaseObjectType;
        //nodeState.DisplayName = new LocalizedText("en-US", nodeState.SymbolicName);
        //nodeState.Description = item.Description;
        ////nodeState.NodeClass = item.NodeClass;
        //nodeState.EventNotifier = EventNotifiers.None;
        //nodeState.NodeId = new NodeId($"ns={namespaceIndex};s={nodeState.SymbolicName}");
        //nodeState.BrowseName = new QualifiedName(nodeState.SymbolicName, namespaceIndex);
        //predefinedNodes2.Add(
        //    nodeState
        //    );
        //root2.AddNotifier(context,item.NodeId,false, customObject);
        //AddRootNotifier(item);

    }
    //AddRootNotifier(root);
    
    //CreateVariable(root, null, "Test", BuiltInType.Int64, ValueRanks.Scalar);
    CreateVariable(root2, null, "Test2", customVariable.NodeId, ValueRanks.Scalar,ReferenceTypeIds.HasComponent);
    CreateVariable(PLC, null, "Test2", customVariable.NodeId, ValueRanks.Scalar);
    nodeStateCollection.AddRange(new List<NodeState> { customVariable, root2,PLC, PC_PLC, customObject });
    //nodeStates.AddRange(predefinedNodes);
    return nodeStateCollection;
}
``

Expected Behavior

Create a structure which is expected like this:

but it like this now:

And I created a variable of structure,but which doesn't display its value

Steps To Reproduce

No response

Environment

- OS:
- Environment:
- Runtime:
- Nuget Version:
- Component:
- Server:
- Client:

Anything else?

No response

romanett · 2025-03-06T13:16:21Z

romanett
Mar 6, 2025
Collaborator

@1924006212 please provide your description in english

2 replies

1924006212 Mar 7, 2025
Author

I want create a custom structure type variable,like this ,

but I create my structure which can't be used in my variable,and this type of my variable is my structure,this value of my variable is null ,why?

1924006212 Mar 7, 2025
Author

Could you show a sample about how to create a custom structure variable?

EthanChangAED · 2025-03-06T14:14:34Z

EthanChangAED
Mar 6, 2025
Collaborator

Converting to Q&A for visibility.

0 replies

1924006212 · 2025-03-21T02:25:11Z

1924006212
Mar 21, 2025
Author

Now I create a variable of custom structure ,but I can't change its value.The excepted message is BadTypeMismatch

here is the Code
SampleOpcUaServer-master.zip

0 replies

romanett · 2025-03-21T04:18:28Z

romanett
Mar 21, 2025
Collaborator

@1924006212 The Server does mit Support custom types Without additional extenstions

0 replies

1924006212 · 2025-03-21T05:28:34Z

1924006212
Mar 21, 2025
Author

the type is datatype,not custom type
` DataTypeState dataTypeP = new DataTypeState
{
NodeId = new NodeId("ns=2;s="dataTypeP""),
BrowseName = new QualifiedName("dataTypeP", NamespaceIndex),
IsAbstract = true,
DisplayName = "dataTypeP"
};
dataTypeP.AddReference(ReferenceTypes.Organizes, true, DataTypeIds.Structure);
nodeStateCollection.Add(dataTypeP);

        DataTypeState dataType = new DataTypeState
        {
            NodeId = new NodeId("ns=2;s=\"CustomSensorData\""),
            BrowseName = new QualifiedName("DT_CustomSensorData", NamespaceIndex),
            IsAbstract = false,
            DisplayName = "DTCustomSensorData"
        };
        dataType.AddReference(ReferenceTypes.HasSubtype, true, dataTypeP.NodeId);
        dataTypeP.AddReference(ReferenceTypes.HasSubtype, false, dataType.NodeId);

        //dataType.AddReference(ReferenceTypes.Organizes, true, dataTypeP.NodeId);

        BaseObjectState Te_PC_PLC = new BaseObjectState(null);
        Te_PC_PLC.SymbolicName = "\"Te_PC_PLC\"";
        Te_PC_PLC.NodeId = new NodeId("ns=2;s=PersonType_BinaryEncoding");
        Te_PC_PLC.BrowseName = new QualifiedName("Default Binary", namespaceIndex);
        Te_PC_PLC.DisplayName = new LocalizedText("en-US", "Default Binary");
        Te_PC_PLC.AddReference(ReferenceTypeIds.HasTypeDefinition, false,ObjectTypes.DataTypeEncodingType);
        //Te_PC_PLC.AddReference(ReferenceTypeIds.Organizes, true, ObjectIds.DefaultBinary);
        //AddRootNotifier(Te_PC_PLC);
        nodeStateCollection.Add(Te_PC_PLC);
        
        StructureDefinition definition = new StructureDefinition()
        {
            //StructureType = StructureType.StructureWithSubtypedValues,
            DefaultEncodingId = Te_PC_PLC.NodeId,
            BaseDataType=dataTypeP.NodeId,
            //BaseDataType = DataTypeIds.ObjectNode,
            Fields = new StructureField[]
            {
                new StructureField { Name = "Temperature", DataType = DataTypeIds.Int16, ValueRank = -1, IsOptional = false, },
                new StructureField { Name = "DeviceId", DataType = DataTypeIds.Int16, ValueRank = -1 },
                new StructureField { Name = "IsActive", DataType = DataTypeIds.Int16, ValueRank = -1 }
            }
        };
        dataType.AddReference(ReferenceTypes.HasEncoding, false, Te_PC_PLC.NodeId);
        dataType.DataTypeDefinition = new ExtensionObject(Te_PC_PLC.NodeId, definition);`

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How can I create a custom structure,and create a variable of this structure? #3031

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1924006212 Mar 6, 2025

Type of issue

Current Behavior

Expected Behavior

Steps To Reproduce

Environment

Anything else?

Replies: 5 comments · 2 replies

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romanett Mar 6, 2025 Collaborator

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1924006212 Mar 7, 2025 Author

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1924006212
Mar 6, 2025

Replies: 5 comments 2 replies

romanett
Mar 6, 2025
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1924006212 Mar 7, 2025
Author

1924006212 Mar 7, 2025
Author

EthanChangAED
Mar 6, 2025
Collaborator

1924006212
Mar 21, 2025
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romanett
Mar 21, 2025
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1924006212
Mar 21, 2025
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