To connect to the OPC server, do the following:

  1. In the Host field (1) on the settings panel of the OPC Wrapper object enter the IP-address or name of computer on which OPC servers are located.

    Correct DCOM configuration is required to connect to and search for remote OPC servers.


  2. Click the Apply button (6).
  3. Go to another object and then come back to the settings panel of the OPC Wrapper object.
    Server address is saved and can’t be changed.
  4. Set the authentication parameters to search for Servers:

    a. Specify the name of domain the user, who has rights to search for Servers, belongs to (2).

    If there is no domain in the system or the user who does not belong to any domain is to be selected, then the Domain field is to be left blank.

    b. Specify the login (3) and password (4) of the user who has rights to search for Server.

    If the authentication parameters are not set, then the current user performs search for Servers.


  5. Click the Expand OPC Servers (5) button.
    Objects corresponding to found Servers will be created after the search completion.

    AE servers objects group is OPC servers of Alarms & Events standard, DA servers is OPC servers of Data Access standard.
  6. Go to the OPC server to which connection is required.
  7. Set the authentication parameters to connect to the Server:

    a. Specify the domain name (1) to which the user, who has rights to connect to the Server, belongs.

    If there is no domain in the system or the user who does not belong to any domain is to be selected, then the Domain field is to be left blank.

    b. Specify the login (2) and password (3) of the user who has rights to connect to the Server.

    If the authentication parameters are not set, then the current user connects to the Server.


  8. Set the Connect (4) checkbox to establish the connection to the Server.
  9. Click the Apply button (5).

Connection to the OPC server is completed. Message about successful connection will be displayed in the Events protocol.