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.NET Based OPC UA Client/Server SDK
3.3.0.530
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.NET Based OPC UA Client/Server SDK
3.3.0.530
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This VariableType defines the general characteristics of a DataItem. More...
Inherits UnifiedAutomation.UaServer.BaseDataVariableModel.
Inherited by UnifiedAutomation.UaServer.BaseAnalogModel, UnifiedAutomation.UaServer.DataItemModel< T >, and UnifiedAutomation.UaServer.DiscreteItemModel.
Public Member Functions | |||
| DataItemModel () | |||
| Initializes a new instance of the DataItemModel class. More... | |||
| DataItemModel (DataItemModel template, DummyArgument dummy=null) | |||
| Initializes a new instance of the DataItemModel class. More... | |||
 Public Member Functions inherited from UnifiedAutomation.UaServer.BaseDataVariableModel | |||
| BaseDataVariableModel () | |||
| Initializes a new instance of the BaseDataVariableModel class. More... | |||
| BaseDataVariableModel (BaseDataVariableModel template, DummyArgument dummy=null) | |||
| Initializes a new instance of the BaseDataVariableModel class. More... | |||
| Public Member Functions inherited from UnifiedAutomation.UaServer.BaseVariableModel | |||
| BaseVariableModel () | |||
| Initializes a new instance of the BaseVariableModel class. More... | |||
| BaseVariableModel (BaseVariableModel template, DummyArgument dummy=null) | |||
| Initializes a new instance of the BaseVariableModel class. More... | |||
| Public Member Functions inherited from UnifiedAutomation.UaServer.ModelControllerBase | |||
| virtual ModelHandle | GetModelHandle (StringTable namespaceUris, object instance) | ||
| Gets the metadata handle. More... | |||
| virtual DataValue | GetValue (IMapperContext context, ModelMapping mapping) | ||
| Gets the value associated with the mapping. More... | |||
| virtual bool | SetValue (IMapperContext context, ModelMapping mapping, DataValue value) | ||
| Sets the value associated with the mapping. More... | |||
| StatusCode | GetStatusCode (string propertyName) | ||
Retrieve the status code for the given property. If no status code was explicitly set, StatusCodes.Good will be returned.
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| void | SetStatusCode (string propertyName, StatusCode statusCode) | ||
| Sets the status code of the given property. More... | |||
Properties | |
| string | Definition [get, set] |
| A vendor-specific, human readable string that specifies how the value of this DataItem is calculated. More... | |
| double | ValuePrecision [get, set] |
| Specifies the maximum precision that the server can maintain for the item based on restrictions in the target environment. More... | |
| Properties inherited from UnifiedAutomation.UaServer.BaseVariableModel | |
| object | Value [get, set] |
| Gets or sets the value. More... | |
| Properties inherited from UnifiedAutomation.UaServer.ModelControllerBase | |
| ModelHandle | ModelHandle [get, set] |
| Gets or sets the metadata handle. More... | |
| object | UserData [get, set] |
| Gets or sets the user data. More... | |
| Properties inherited from UnifiedAutomation.UaServer.INotifyStatusCodeInfo | |
| bool | HasStatusCodes [get] |
true if no property has an explicit set status code. Hence when all status codes are implicit StatusCodes.Good. More... | |
Additional Inherited Members | |
| Public Attributes inherited from UnifiedAutomation.UaServer.ModelControllerBase | |
| bool | HasStatusCodes => m_statusCodes != null && m_statusCodes.Count > 0 |
| Protected Member Functions inherited from UnifiedAutomation.UaServer.ModelControllerBase | |
| void | RaisePropertyChangedEvent ([CallerMemberName] string propertyName=null) |
| Raises an property change event. More... | |
| void | RaisePropertyChangeRequestedEvent< T > (T value, [CallerMemberName] string propertyName=null) |
| Called when the value of a property is supposed to be changed. More... | |
| bool | SetField< T > (ref T field, T value, [CallerMemberName] string propertyName=null) |
| Sets the backing field to the new value, and triggers a property change event, if the value has changed. More... | |
| Events inherited from UnifiedAutomation.UaServer.ModelControllerBase | |
| PropertyChangedEventHandler | PropertyChanged |
| Occurs when a property value changes. More... | |
| EventHandler < PropertyChangeRequestedEventArgs > | PropertyChangeRequested |
| The event is emitted just before the value will be changed, and gives the observer the opportunity to reject or adjust (e.g. clamp) the property change by setting the PropertyChangeRequestedEventArgs.StatusCode and PropertyChangeRequestedEventArgs.Value properties. More... | |
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EventHandler < StatusCodeChangedEventArgs > | StatusCodeChanged |
| Events inherited from UnifiedAutomation.UaServer.INotifyPropertyChangeRequested | |
| EventHandler < PropertyChangeRequestedEventArgs > | PropertyChangeRequested |
| The property change request event. More... | |
| Events inherited from UnifiedAutomation.UaServer.INotifyStatusCodeInfo | |
| EventHandler < StatusCodeChangedEventArgs > | StatusCodeChanged |
| Occurs if the status code of a property was changed. More... | |
This VariableType defines the general characteristics of a DataItem.
All other DataItem Types derive from it. It defines the optional properties Definition and ValuePrecision. The DataItemType derives from the BaseDataVariableType.
| UnifiedAutomation.UaServer.DataItemModel.DataItemModel | ( | ) |
Initializes a new instance of the DataItemModel class.
| UnifiedAutomation.UaServer.DataItemModel.DataItemModel | ( | DataItemModel | template, |
| DummyArgument | dummy = null |
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| ) |
Initializes a new instance of the DataItemModel class.
| template | The template. |
| dummy | Dummy argument to enable writing own constructors that are called by the generated code. |
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getset |
A vendor-specific, human readable string that specifies how the value of this DataItem is calculated.
Definition is non-localized and will often contain an equation that can be parsed by certain clients. Example: Definition::="(TempA - 25) + TempB"
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getset |
Specifies the maximum precision that the server can maintain for the item based on restrictions in the target environment.
ValuePrecision can be used for the following DataTypes:
The ValuePrecision Property is an approximation that is intended to provide guidance to a Client. A Server is expected to silently round any value with more precision that it supports. This implies that a Client may encounter cases where the value read back from a Server differs from the value that it wrote to the Server. This difference shall be no more than the difference suggested by this Property.