Bugs: OPC UA Demo Server for Windows

[jotto]

Hi,
I think I found two bugs inside the OPC UA Demo Server for Windows. I use the following software combination:

• OPC UA Demo Server for Windows V1.3.2 B200
• OPC UA Java Stack Source Code [1.01.308.2] from http://www.opcfoundation.org

Bug 1:
If I try to add a node under objects the returned status code description is: “User does not have permission to perform the requested operation.” Maybe it is a feature?
If I add a node under e.g. PLC1 everything works as expected.

Bug 2:
The server crashes if I remove all nodes.
“Unhandled exception at 0x4A9A2000 in uademoserver.exe: 0xC0000005: Access violation reading location 0x4A9A2000.”
If I remove a single node everything works fine.

Yours faithfully
Jens

[Support Team]

Hi Jens,

Bug 1 is not a bug - it's a feature :-)
Only one of the node managers in the demo server allows adding nodes. Therefore it does not work everywhere in the server address space. You cannot expect at all that you can add nodes to a server. If a server allows adding nodes it will allow this only in certain locations and with certain limitations.

Bug 2:
The server should not allow you to remove nodes that it needs for internal simulation logic. The crash is based on deleted nodes used for the simulation.

Best Regards,
Unified Automation Support Team