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checking the connection

@opcua/for-node-red provides a convenient feature that allows you to check the connection to the OPC UA server. This feature is available in the OPC UA Endpoint tab.

It provides comprehensive information about the connection and the server and helps you diagnose connection issues such as:

  • Wrong endpoint URL
  • Wrong security policy
  • Wrong security mode
  • Wrong user credentials
  • Wrong client certificate
  • Missing server certificate in the client PKI
  • Network connectivity issues
  • License issues

successful connection​

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example of unsuccessful connection​

In this example, the endpoint URL is correct, but the client certificate is not trusted by the server, and the server shutdown the connection prematurely.

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info

read Establishing a secure connection for more details on how to setup OPCUA Secure connections

example of unsuccessful connection due to bad username/password​

In this example, the endpoint URL is correct, but the username/password is not valid, and the server refuses to activate the OPCUA Session.

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