Product specifications

Integrating OPC Servers into 800xA
3BDS011222-510 B 421
Hardware Setup
800xA does not impose any restrictions on which machine the third party OPC
server software is to be installed. It can be installed directly on the 800xA
connectivity servers or on a separate dedicated server. Installation on a separate
machine gives better system performance and it gives the 800xA connectivity
servers a better fault isolation from poorly implemented OPC servers. CPU, RAM
and/or disk intensive OPC servers shall be installed on separate machines.
Integrating OPC DA Servers
In this section you can read about how to connect to a third party OPC Server.
This means that you can integrate and then access data from a third party OPC DA
Server, conforming to OPC Data Access standard 2.0 or 1.0A.
Configuring DA Connectivity
Integration.
Creating aspect objects in Control Structure performs integration of an
OPC server into the 800xA system. Every aspect object corresponds to a branch in
the address space of the OPC Server.
The 800xA system provides a Generic OPC Server Network Object Type with all
functionality required for integration. By creating the Network object, a wizard
guides you through the process of connecting an OPC server.
On the Network object you find the Uploader aspect providing a generic tool to
mirror the content of an OPC server into Control Structure.
When you connect the OPC Server, you must decide if the OPC Server should run
on a Connectivity Server or in a non-system node. See DCOM Security Settings for
OPC on page 457 for security settings when running the OPC Server on a non-
system node.
The OPC Server must implement the interface IOPCBrowseServerAddressSpace
to be able to support the Uploader functionality.