Reference

OpcDataVariableNode Class

Namespace

Opc.UaFx

Assembly

Opc.UaFx.Advanced.dll

Package

Opc.UaFx.Advanced v2.59.0

Members

OpcDataVariableNode Members

Provides a node to represent complex data structures expose their information as complex data types, as well as components in the address space. This allows access to simple values as well as access to the whole information at once in a transactional context.

Syntax

[OpcNodeType(63)]
public class OpcDataVariableNode : OpcVariableNode

<OpcNodeType(63)>
Public Class OpcDataVariableNode
    Inherits OpcVariableNode

Inheritance

Object → OpcNode → OpcInstanceNode → OpcVariableNode → OpcDataVariableNode

Implements

• IOpcNode
• IOpcNodeInfo
• IOpcVariableNodeInfo

Derived types

• OpcConditionVariableNode
• OpcDataItemNode
• OpcDataVariableNode<T>
• OpcNodeIdArrayVariableNode
• OpcNodeIdVariableNode
• OpcTextVariableNode

Remarks

The data variable node is a specialization of the OpcVariableNode there its reference type is HasComponent and its type definition is BaseDataVariable.

For example, the ServerStatus variable of the server object is modelled as a complex data variable having the ServerStatusDataType providing all information about the server status. But it also exposes the CurrentTime as a simple data variable, because a client may want to read only the current time of the server, and is not interested in the build information, etc.

Constructors

Name	Description
OpcDataVariableNode18 overloads	Initializes a new instance of the OpcDataVariableNode class accessible by the name specified.

Properties

Name	Description
DefaultTypeDefinitionIdprotected · override	Gets the default identifier which identifies the node that defines the underlying node type from that this OpcInstanceNode has been created.

Inherits members from OpcVariableNode, OpcInstanceNode, OpcNode.

Applies to

Package	Versions
Opc.UaFx.Advanced	v2.5–v2.59