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To connect to the OPC - server, do the following:

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

   Info
   title Note.
   Correct DCOM configuration is required to connect to the and search for remote OPC -serverservers.

2. Click the Apply button.
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 (1).

   Info
   title Note
   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 and password of the user who has rights to search for Server (2).

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

5. Click the Expand OPC Server (3) 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 name of domain the user, who has rights to connect to the Server, belongs to (1).
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   Info
   title Note.
   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 and password of the user who has rights to connect to the Server (2).

   Note
   title Important!
   If the authentication parameters are not set, then the current user connects to the Server.

8. Set the Connect (3) checkbox.On the settings panel of this object set the Connect checkbox.
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9. Click the Apply button.

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