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Classic OPC: DA, A&E, HDA, XML-DA, etc.

Questions about OPC Classic technologies and specifications, etc.

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Develop software to bypass COM/DCOM configurations.

Replies: 1

Views 1396

First Post Rafael Augusto Teodoro 8 years ago

Replies: 2

Views 11384

First Post Alberto Cappellini 8 years ago

.NET OPC DA Sample Server build error LNK1169/LNK2005

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Views 3657

First Post Ibrahim Ghoddan 8 years ago

Last Post Ibrahim Ghoddan 8 years ago

OPC NET API License

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Views 2786

First Post Ibrahim Ghoddan 8 years ago

Last Post Karl Deiretsbacher 8 years ago

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Marshalling and unmarshalling a VARIANT of IOPCSyncIO::Write

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Views 2030

First Post Rodrigo De Francisco 8 years ago

Last Post Rodrigo De Francisco 8 years ago

DataChangedEventHandler Exception System.Runtime.InteropServices.COMException (0x80040202): Exception from HRESULT: 0x80040202

Replies: 4

Views 7109

First Post Stitch35 8 years ago

Last Post Randy Armstrong 8 years ago

DA NET API missing AssemblyVersionInfo.cs

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Views 1695

First Post Thomas Voss 8 years ago

Last Post Thomas Voss 8 years ago

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OpcNetApi Group Subscription DataChangedEventHandler throws System.NullReferenceException

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Views 3774

First Post Chris Wong 9 years ago

Exception thrown: 'System.Runtime.InteropServices.COMException' in OpcNetApi.Com.dll

Replies: 1

Views 2635

First Post Stitch35 8 years ago

Last Post Frederick Loveless 8 years ago

Question for number of variables

Replies: 3

Views 1893

First Post Soonjong Park 8 years ago

Last Post Randy Armstrong 8 years ago

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Read Multiple Tags/Items at once using OPCDAAUTO.DLL Group Object Method - SyncRead

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Views 2573

First Post Vadim Komarov 8 years ago

Last Post Vadim Komarov 8 years ago

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Read VARIANT while marshaling stream from x32 to x64

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Views 2383

First Post TelWin SCADA 8 years ago

Last Post Zbynek Zahradnik 8 years ago

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