Configure Reverse Connection

There are two approaches to establish communication between
FactoryTalk Linx
 OPC UA Connector and OPC UA Servers:
  • Normal Connection
    :
    FactoryTalk Linx
     OPC UA Connector initiates connection to the OPC UA Server before starting the UA-specific handshake.
  • Reverse Connection
    : The OPC UA Server initiates connection to
    FactoryTalk Linx
     OPC UA Connector. Once
    FactoryTalk Linx
     OPC UA Connector establishes a secure channel with the OPC UA Server, the UA-specific handshake occurs. This approach is used when the OPC UA Server is behind firewalls with no open ports to connect to.

To configure Reverse Connection in FactoryTalk Linx OPC UA Connector

  1. In , select
    OPC UA Servers
    .
  2. On , select an OPC UA Server, select
    Reverse Connect
    , and then enter values in the following boxes:
    • Endpoint URL
      . Enter the network path to the OPC UA Server in the format of
      opc.tcp://
      <hostname_or_ip:port>
      /
      <EndpointName>
      .
      TIP: In the case of a reverse connection, the Endpoint URL must be the OPC UA Server's Server URL, not the Discovery URL.
    • Client Address
      . Enter the hostname or the IP address of
      FactoryTalk Linx
      OPC
       UA Connector.
      TIP: Use IP address if
      FactoryTalk Linx
       OPC UA Connector and the OPC UA Server are on different networks.
    • Client Port
      . Enter the port to be used for Reverse Connection.
    A complete network path to
    FactoryTalk Linx
     OPC UA Connector is automatically generated in
    Client Endpoint URL
    .
  3. (optional) Select
    Log Reverse Connect Server Uri
     to log the URL and URI for the reverse connected OPC UA Server to
    FactoryTalk Diagnostic Log
    .
  4. Select
    OK
    .
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