Namespace: Opc.UaFx
Assemblies: Opc.UaFx.Advanced.dll, Opc.UaFx.Advanced.dll
The OpcDataItemNode type exposes the following members.
Initializes a new instance of the OpcDataItemNode class accessible by the name
specified as a child node of the parent
node given.
C#
public OpcDataItemNode(IOpcNode parent, OpcName name)
Parameters
parent
IOpcNode
The IOpcNode used as the parent node or a null reference (Nothing in Visual Basic) in the case there is no parent node available.
name
OpcName
The OpcName through that the new data item node can be accessed.
Initializes a new instance of the OpcDataItemNode class accessible by the name
specified with the initial value defined by value
as a child node of the parent
node given.
C#
public OpcDataItemNode(IOpcNode parent, OpcName name, object value)
Parameters
parent
IOpcNode
The IOpcNode used as the parent node or a null reference (Nothing in Visual Basic) in the case there is no parent node available.
name
OpcName
The OpcName through that the new data item node can be accessed.
value
Object
The initial value of the new data item node.
Initializes a new instance of the OpcDataItemNode class accessible by the name
and id
specified as a child node of the parent
node given.
C#
public OpcDataItemNode(IOpcNode parent, OpcName name, OpcNodeId id)
Parameters
parent
IOpcNode
The IOpcNode used as the parent node or a null reference (Nothing in Visual Basic) in the case there is no parent node available.
name
OpcName
The OpcName through that the new data item node can be accessed.
id
OpcNodeId
The OpcNodeId through that the new data item node can be identified and accessed.
Initializes a new instance of the OpcDataItemNode class accessible by the name
and id
specified with the initial value defined by value
as a child node of the parent
node given.
C#
public OpcDataItemNode(IOpcNode parent, OpcName name, OpcNodeId id, object value)
Parameters
parent
IOpcNode
The IOpcNode used as the parent node or a null reference (Nothing in Visual Basic) in the case there is no parent node available.
name
OpcName
The OpcName through that the new data item node can be accessed.
id
OpcNodeId
The OpcNodeId through that the new data item node can be identified and accessed.
value
Object
The initial value of the new data item node.
Initializes a new instance of the OpcDataItemNode class accessible by the name
specified.
C#
public OpcDataItemNode(OpcName name)
Parameters
name
OpcName
The OpcName through that the new data item node can be accessed.
Initializes a new instance of the OpcDataItemNode class accessible by the name
specified with the initial value given by value
.
C#
public OpcDataItemNode(OpcName name, object value)
Parameters
name
OpcName
The OpcName through that the new data item node can be accessed.
value
Object
The initial value of the new data item node.
Initializes a new instance of the OpcDataItemNode class accessible by the name
and id
specified.
C#
public OpcDataItemNode(OpcName name, OpcNodeId id)
Parameters
name
OpcName
The OpcName through that the new data item node can be accessed.
id
OpcNodeId
The OpcNodeId through that the new data item node can be identified and accessed.
Initializes a new instance of the OpcDataItemNode class accessible by the name
and id
specified with the initial value given by value
.
C#
public OpcDataItemNode(OpcName name, OpcNodeId id, object value)
Parameters
name
OpcName
The OpcName through that the new data item node can be accessed.
id
OpcNodeId
The OpcNodeId through that the new data item node can be identified and accessed.
value
Object
The initial value of the new data item node.
Gets the default identifier which identifies the node that defines the underlying node type from that this OpcInstanceNode has been created.
C#
protected override OpcNodeId DefaultTypeDefinitionId { get; }
Property Value
The OpcNodeId of the type node from that this OpcInstanceNode has been created from. These type node defines the typical structure of an instance node of its type definition. If there exists no specific type definition node a null reference (Nothing in Visual Basic).
Gets or sets a vendor-specific, human readable string that specifies how the value of this data item is calculated.
C#
public string Definition { get; set; }
Property Value
A non-localized value which will often contain an equation that can be parsed by certain clients.
Gets the OpcPropertyNode´1 of the Definition property.
C#
public OpcPropertyNode<string> DefinitionNode { get; }
Property Value
An instance of the OpcPropertyNode´1 class.
Gets or sets a value which specifies the maximum precision that the server can maintain for the item based on restrictions in the target environment.
C#
public double ValuePrecision { get; set; }
Property Value
The maximum precision that the server can maintain for the item.
Remarks
The property can be used for the following OpcDataTypes: * *
The value 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 should be no more than the difference suggested by this property.
Gets the OpcPropertyNode´1 of the ValuePrecision property.
C#
public OpcPropertyNode<double> ValuePrecisionNode { get; }
Property Value
An instance of the OpcPropertyNode´1 class.
Initializes the default values used by the OpcDataItemNode.
C#
protected override void InitializeDefaults()
Remarks
This method is used to ensure the availability of appropriate node specific default values. For more information like when this method is to be overwritten see InitializeDefaults.