Hello,
I met the Problem when I tried to use opcua. And I have upload my program. flows.json (148.2 KB)
<"OpcUaClientNode: Case B: UserName & password does not match to server (needed by Sign): undefined undefined">
<"OpcUaClientNode: Case A: Endpoint does not contain, 1==None 2==Sign 3==Sign&Encrypt securityMode:[1] securityPolicy:["Profile Reporting Links>
<"OpcUaClientNode: can't work without OPC UA Session">
In my case, everything was done according to the documentation and it didn't work, because the system firewall was cutting the connection between the OPCUA server and the Node-red server.
After the sysadmin opened the ports between the OPCUA and the Node-Red server, the issue was resolved and everything worked as it should.
Check the system firewall settings and try again, that might be the problem.
Hello OriolFM, Thank you very much for your reply. Due to my work, I won't be able to continue this project until next week at the earliest. I will try it as soon as I can at work.
Hi OriolFM, I thought back and indeed Node-Red was having problems connecting to opcua after updating the windows system. But I checked the firewall history and it didn't close anything. After I turned off the firewall, the connection still didn't work.
The error messages you posted were consistent with the ones I got, and in my case, the problem were the ports. If not the ports, then I'd say look again at the Username/password on the OPC/UA server, since the error specifies that the Username& pass do not match the ones in the server.
You have to make sure that the user has the right permissions for read/write (whatever you want to do) and that the Username & password match the ones you use in Node-Red.
In your system, are both the OPC/UA server and NR deployed by you, or is the OPC/UA deployed by a third party?
