Table 5 defines the namespace metadata for this specification. The Object is used to provide version information for the namespace and an indication about static Nodes. Static Nodes are identical for all Attributes in all Servers, including the Value Attribute. See Part 5 for more details.

The information is provided as Object of type NamespaceMetadataType. This Object is a component of the Namespaces Object that is part of the Server Object. The NamespaceMetadataType ObjectType and its Properties are defined in Part 5.

The version information is also provided as part of the ModelTableEntry in the UANodeSet XML file. The UANodeSet XML schema is defined in Part 6.

Table 5 – NamespaceMetadata Object for this Specification

Attribute

Value

BrowseName

http://opcfoundation.org/UA/PlasticsRubber/Extrusion_v2/MeltPump/

Property

DataType

Value

NamespaceUri

String

http://opcfoundation.org/UA/PlasticsRubber/Extrusion_v2/MeltPump/

NamespaceVersion

String

2.00

NamespacePublicationDate

DateTime

2022-05-01

IsNamespaceSubset

Boolean

False

StaticNodeIdTypes

IdType[]

0

StaticNumericNodeIdRange

NumericRange[]

StaticStringNodeIdPattern

String

Namespaces are used by OPC UA to create unique identifiers across different naming authorities. The Attributes NodeId and BrowseName are identifiers. A Node in the UA AddressSpace is unambiguously identified using a NodeId. Unlike NodeIds, the BrowseName cannot be used to unambiguously identify a Node. Different Nodes may have the same BrowseName. They are used to build a browse path between two Nodes or to define a standard Property.

Servers may often choose to use the same namespace for the NodeId and the BrowseName. However, if they want to provide a standard Property, its BrowseName shall have the namespace of the standards body although the namespace of the NodeId reflects something else, for example the EngineeringUnits Property. All NodeIds of Nodes not defined in this document shall not use the standard namespaces.

Table 6 provides a list of mandatory and optional namespaces used in an OPC 40084-5 OPC UA Server.

Table 6 – Namespaces used in an OPC 40084-5 Server

NamespaceURI

Description

Use

http://opcfoundation.org/UA/

Namespace for NodeIds and BrowseNames defined in the OPC UA specification. This namespace shall have namespace index 0.

Mandatory

Local Server URI

Namespace for nodes defined in the local server. This may include types and instances used in a device represented by the server. This namespace shall have namespace index 1.

Mandatory

http://opcfoundation.org/UA/DI/

Namespace for NodeIds and BrowseNames defined in OPC 10000-100. The namespace index is server specific.

Mandatory

http://opcfoundation.org/UA/PlasticsRubber/

GeneralTypes/

Namespace for NodeIds and BrowseNames defined in OPC 40083. The namespace index is server specific.

Mandatory

http://opcfoundation.org/UA/PlasticsRubber/

Extrusion_v2/GeneralTypes/

Namespace for NodeIds and BrowseNames defined in OPC 40084-1. The namespace index is server specific.

Mandatory

http://opcfoundation.org/UA/Machinery/

Namespace for NodeIds and BrowseNames defined in OPC 40001-1. The namespace index is server specific.

Mandatory

http://opcfoundation.org/UA/PlasticsRubber/

Extrusion_v2/MeltPump/

Namespace for NodeIds and BrowseNames defined in this specification. The namespace index is server specific.

Mandatory

Vendor specific types and instances

A server may provide vendor specific types like types derived from MachineType or MachineStatusType or vendor specific instances of devices in a vendor specific namespace.

Optional

Table 7 provides a list of namespaces and their index used for BrowseNames in this specification. The default namespace of this specification is not listed since all BrowseNames without prefix use this default namespace.

Table 7 – Namespaces used in this specification

NamespaceURI

Namespace Index

Example

http://opcfoundation.org/UA/

0

0:NodeVersion

http://opcfoundation.org/UA/DI/

2

2:DeviceClass

http://opcfoundation.org/UA/PlasticsRubber/GeneralTypes/

3

3:MachineInformationType

http://opcfoundation.org/UA/PlasticsRubber/Extrusion_v2/GeneralTypes/

4

4:ExtrusionDeviceType

http://opcfoundation.org/UA/Machinery/

5

5:Machines