OPC UA security > Implementing security for a DeltaV OPC UA server

Import client certificates for an OPC UA server

To communicate with an OPC UA client, the server needs client certificates. The certificates you import are automatically trusted by the server, enabling communication with the clients.

You can import self-signed client certificates or CA-signed issuer chains. After importing a CA-signed issuer chain, any client signed by the issuer is trusted.

By default, DeltaV looks for certificate files in the DeltaV\DVData\Import-Export folder.

  1. Select the OPC UA Server in the DeltaV Explorer hierarchy.
  2. Right-click Properties.
  3. Click Clients and Issuers.
  4. Click Import.
  5. Browse to the certificate files (.cer and .der).
  6. Click the certificate file and then click Open.
    The software adds the certificate to the Clients and Issuers list and trusts them.
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