8.2.1 General

This Built-in DataType is composed of three elements that identify a Node within a Server. They are defined in Table 22.

Table 22 – NodeId Definition
NameTypeDescription
NodeIdstructure

NamespaceIndex

UInt16The index for a namespace URI (see 8.2.2).

IdType

EnumThe format and data type of the identifier (see 8.2.3).

Identifier

*The identifier for a Node in the AddressSpace of an OPC UA Server (see 8.2.4).

See OPC 10000-6 for a description of the encoding of the identifier into OPC UA Messages.