Unique BrowseName in address space|OPC UA Standard|Forum|OPC Foundation

Avatar
Search
Forum Scope


Match



Forum Options



Minimum search word length is 3 characters - maximum search word length is 84 characters
Lost password?
sp_Feed sp_PrintTopic sp_TopicIcon
Unique BrowseName in address space
Avatar
Petr Labunets
New Member
Members
Forum Posts: 1
Member Since:
03/04/2015
sp_UserOfflineSmall Offline
1
12/14/2016 - 02:59
sp_Permalink sp_Print

OPC UA Part 3 claims in 5.2.4:

Unlike NodeIds, the BrowseName cannot be used to unambiguously identify a Node. Different Nodes may have the same BrowseName.

But below claims that BrowseName…

contains a namespace and a string. The namespace is provided to make the BrowseName unique in some cases in the context of
a Node (e.g. Properties of a Node) although not unique in the context of the Server

Well it is possible that node uses references to nodes with BrowseName different only in NamespaceIndex e.g. node <“Bar” : 1> and node <“Bar” : 2 >.

But, is it possible that node with BrowseName <“Foo”: 1> uses references to nodes with exactly the same BrowseName <“Bar” : 1>? 

 

thank you in advance

Avatar
Alan Spelnikov
New Member
Members
Forum Posts: 2
Member Since:
12/02/2015
sp_UserOfflineSmall Offline
2
12/26/2016 - 06:14
sp_Permalink sp_Print

<“Foo”: 1> and <“Bar” : 1> not the same 🙂

I found three exceptions:

1. All reference types have unique BrowseNames.

2. All nodes, referenced via HasProperty to single Node, must have unique BrowseNames.

3. All paths in InstanceDeclaration must be unique. But in realizations of InstanceDeclaration paths may be not unique.

Forum Timezone: America/Phoenix
Most Users Ever Online: 510
Currently Online:
Guest(s) 38
Currently Browsing this Page:
1 Guest(s)
Top Posters:
Forum Stats:
Groups: 2
Forums: 10
Topics: 1444
Posts: 4887