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Developing an UDS ?

Former Member
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Hi,

Can anyone tell me how can i go about writing an UDS or give me directions as to where can i know more about the UDC Framework ?

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Former Member
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Hello, Abesh.

Help me understand what system(s) you are trying to develop a connector to, and I can provide some insights as to the best mechanism.

Best regards,

Rick Bullotta

VP ASM Manufacturing

SAP Labs, LLC

abesh
Contributor
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Nothing specific but i was using the UDS Admin utility and was wondering whether there was a way of using the UDC connector to get to talk with a UDS that i might develop.

Former Member
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Individual UDC's are basically COM objects that implement a specific set of interface(s) for accessing metadata and data. The UDS framework deals with the actual request handling, formatting, caching, aliasing, and other functions.

There are really three options for custom "connectors", depending on the type of data and any technical limitations.

Option #1: Write an OPC or OPC HDA "server" for the target system and use our OPC or OPC HDA UDS to access it. This is best for a typical "tag-based" data source (historian, PLC/DCS, etc.).

Option #2: Write a custom UDS.

Option #3: Write a custom action block for the xMII business logic service engine (BLS is extensible).

Best regards,

Rick

Option #3:

abesh
Contributor
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Thanks Rick,

That really helped. Could you please explain the options in detail or maybe point to resources on the net which might help me in exploring these options.