The Machines Object is a standardized entry point to access all Machines managed in the Server and formally defined in Table 22. All Objects representing Machines, that are managed in the Server, shall be referenced directly from this Object with a Reference of ReferenceType Organizes or a subtype of Organizes.

Table 22 – Machines Definition

Attribute	Value
BrowseName	Machines
Description	This object is the entry point to machines managed in the server. All machines are directly referenced by this object.
References	NodeClass	BrowseName	DataType	TypeDefinition
OrganizedBy by the 0:Objects defined in OPC 10000-5
0:HasTypeDefinition	ObjectType	0:FolderType	Defined in OPC 10000-5

In order to identify the referenced Objects as representations of Machines, each of those Objects shall provide the MachineIdentificationType AddIn using the 0:DefaultInstanceBrowseName as a direct sub-component of the Object (referenced with a Reference of ReferenceType 0:HasAddIn or a subtype of it).

The Machines Object shall be referenced from the 0:Objects Object defined in OPC 10000-5 with an Organizes Reference.

Since later versions of this specification might change the parent of this Object, Clients aware of this standardized Object shall not access it via its parent but directly via its standardized NodeId.