OPCUA connection problem

Hello,
I have a PLC (CX9020 Beckhoff) running OPCUA Server. I can connect and read/write all the tags with UaExpert and qith the Sample Client app from beckhoff.
I think all the configuration is correct.
For some reason, I don´t understand, cannot connect to the OPCUA Server with Node-red.
Either with "node-red-contrib-opcua" or "node-red-contrib-iiot-opcua" the connection doesn´t work.
I begin to think that I need some configuration to access the OPCUA with Node-red!!
If someone can help, I aprreciate.
Thanks,

The flow is pretty simple:

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