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OPC Data
Access Specification
Mission
Statement
- To
develop a revised (version 2) data access specification.
- Version
2 of the COM/Custom interface will include minor revisions
based on user feedback; primarily to replace the IDataObject
callback with a ConnectionPoint based callback. Connection
points are a newer technique which should be easier
to implement. It is the intent that 1.0 Custom servers
can be converted with minimal work to 2.0 servers.
- Version
2 of the Automation interface will be heavily revised
to more closely follow the Automation object model.
It is not expected that old automation code can easily
be modified to adhere to the new design however it
is our hope to provide generic reusable sample code
that will ease this task.
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To develop sample code for the version 2 Custom and
Automation Interfaces in order to make it easier for
vendors to implement these interfaces. If possible
the Automation code should be generic and easily reuasable.
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To also deliver a standard Proxy/Stub DLL which can
be downloaded and used by any vendor.
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 OPC
Data Access Specification Downloads
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