Hello I am very new user of node-red. I am trying to experiment with it. I want to read from an OPC UA server, I used Siemens S7-1200 PLC as an OPC Server. I connected the PLC with a Raspberry Pi on an Ethernet network with no problem. I tried using Youtube tutorial create a node-red flow using the node-red-contrib-opcua install. I never have been able to communicate, using Anonymous Login and No Security, the Pi communicate with PLC no errors of connection in the debug window, and the payload return always with an undefined variable type. Can anyone help me? Do we need to pay a license fee to use the node-red-contrib-opcua ?
Thank you.
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