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Plant Connectivity 15.1 error on connection to an OPC UA Server


I am trying to connect SAP PCo 15.1 to an OPC UA Server, i click the browse domain button in order to get the available OPC UA server but i am not getting result at all, i wrote the discovery server name and the server endpoint address but the result is the same. I tried to connect another OPC client to the OPC UA server in order to make sure it was not a network problem and the connection was successful.

Thanks in advance, Victor

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  • Best Answer
    Posted on Jul 20, 2016 at 10:30 AM

    Hi Victor,

    I had the same issue than you but I achieved to establish the communication between PCo (OPC client) and Kewpare (OPC UA Server).

    Before configuring PCo, I established the communication between the Kewpare OPC UA Server and other Kepware (OPC Client), installed in the same server than PCo, in order to configure the endpoint and exchange the certificates between the server and client. After that, I moved to PCo and re-tested the communication and it was OK.

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  • Posted on Jul 18, 2016 at 12:32 PM

    Hi Victor,

    1. Which version/SP/Patch of PCo?
    2. Which OPC Server version/SP are you trying to connect to?
    3. Which version of the OPC Discovery Server is deployed?
    4. Which 'other OPC Client' are you testing with that is successful?

    Regards, Steve

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    • Hi Sergio,

      The Kepware Certificate exchange is only for exchanging certs between two Kepware Server instances where one is an OPC UA Server and the other is an OPC UA client and they are installed on separate servers.

      Unless you actually need certificate authentication, I would recommend that you use the NONE security level, especially if the Kepware and PCo are installed on the same server. Certificate authentication requires either self-signed or certificate-authority-signed certificates for PCo and certificate management of these between PCo and Kepware, and the OPC UA Discovery Server is one is used.

      Regards, Steve

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