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FreeOpcUa / python-opcua

LGPL Pure Python OPC-UA Client and Server
http://freeopcua.github.io/
GNU Lesser General Public License v3.0
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References to address space in other server. #557

Open JuanoD opened 6 years ago

JuanoD commented 6 years ago

As I previously pointed in #549, there must be a way for referencing nodes on other servers.

This is defined in IEC 62541 (OPC UA Specification) part 3

4.3.4 References

...

The TargetNode of a Reference may be in the same AddressSpace or in the AddressSpace of another OPC UA Server. TargetNodes located in other Servers are identified in OPC UA Services using a combination of the remote Server name and the identifier assigned to the Node by the remote Server.

I just re-submitted it in its own issue so developers can identify it as a feature request or improvement. I'll try to have a look on how I can make it work, but I don't promise anything.

Thanks for your attention, and great job, guys.

zerox1212 commented 6 years ago

Have you found an OPC UA server that can actually do this? I have not seen this implemented before.

JuanoD commented 6 years ago

To be honest, I haven't tried many servers. I tried to use open62541 but I was unable to import my namespace. This was always my first option.

oroulet commented 6 years ago

It sounds like s very simple thing to implement anyway. Maybe nothing to do. Just reply to client that node is from another server. It does not seem to require any synchronization functionality