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Unable to connect OPC UA Compliance Test Tool with Server.
Arunkumar H
Forum Posts: 3
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02/18/2021 - 10:25
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Connection Setup:

ABB PLC(AC500 - PM5630-2ETH) <-----> ABB Automation Builder <------> OPC UA Compliance Test Tool                                     DesktopIP:              Installed in Same Desktop(IP:

Steps Followed:

1. ABB PLC- PM5630-2ETH connected with ABB Automation Builder Gateway and it is communicating fine.
2. Open OPC uaExpert and add  the server(URL: opc.tcp://, Security Policy: None)
3. Able to add the device successfully.
4. Open 'OPC UA Compliance Test Tool'.
5. Created new project(File -> New Project)[ Project Type: Server Standard Project, Enter ProjectName and Select Project Directory]
6. Enter Server and Endpoint URL(Eg: opc.tcp:// and Security as None.
7. Configure Nodeid and Add the Trust certificate to Server.
8. Click 'Confirmance Unit' and Choose ' Security None' test cases and Execute.

1. OPCUA CTT is not communicating with Server and giving the following Error message.

Trace: UaChannelPrivate::connect(): SecureChannel_Connect(url=opc.tcp://PM5630-2ETH:4840, TransportProfileUri=https://opcfoundation.org/UA-Profile/Transport/uatcp-uasc-uabinary,
ClientCertificate=PKI/CA/certs/ctt_appT.der, ClientPrivateKey=PKI/CA/private/ctt_appT.pem, ServerCertificate=ToDo: Print Server Certificate Details.,
RequestedLifetime=0, MessageSecurityMode=1, AuditEntryId=)


OpenSecureChannel( MessageSecurityMode: None; RequestedSecurityPolicyUri: https://opcfoundation.org/UA/SecurityPolicy#None
); Result = Stack_BadHostUnknown (0xa0060000)


There is a mismatch of the configured ServerUrl (opc.tcp:// in the CTT Settings and the returned EndpointUrl
(opc.tcp://PM5630-2ETH:4840) in the GetEndpoints. Please validate configuration.


Can you please help me to resolve this issue. Thanks in advance.

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