The Device Topologyreflects the communication topology of the Devices. It includes Devicesand the Networks. The entry point DeviceTopologyis the starting point within the AddressSpaceand is used to organize the communication Devicesfor the top level Networksthat provide access to all instances that constitute the Device Topology((sub-)networks, devices and communication elements).
The DeviceTopologynode is formally defined in Table 42.
Table 42– DeviceTopology definition
Attribute |
Value |
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BrowseName |
DeviceTopology |
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|
|
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References |
NodeClass |
BrowseName |
DataType |
TypeDefinition |
OrganizedBy by the Objects Folder defined in OPC 10000-5 |
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HasTypeDefinition |
ObjectType |
BaseObjectType |
Defined in OPC 10000-5. |
|
HasProperty |
Variable |
OnlineAccess |
Boolean |
PropertyType |
Conformance Units |
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DI DeviceTopology |
OnlineAccessprovides a hint of whether the Serveris currently able to communicate to Devicesin the topology. “False” means that no communication is available.