<?xml version='1.0' encoding='utf-8'?> <OPCUAClient xmlns:xsd="http://www.w3.org/2001/XMLSchema" Server_URI="opc.tcp://127.0.0.1:4840/freeopcua/server/"> <AuthType> <x509 Certificate="my_cert.der" PrivateKey="my_private_key.pem"> <Policy/> <Mode/> </x509> </AuthType> </OPCUAClient>