Need an OPC DA automation wrapper that works with a 64bit version of Excel (2013 & 2016)|Classic OPC: DA, A&E, HDA, XML-DA, etc.|Forum|OPC Foundation

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Need an OPC DA automation wrapper that works with a 64bit version of Excel (2013 & 2016)
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Gary Muir
Plymouth
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10/31/2019
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10/31/2019 - 08:08
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I have the Graybox OPC Automation Wrapper (gbda_aut.dll) which I am using to connect Excel 2013 (via VBA) to an OPC server (Rockwell FactoryTalk Gateway).

All is good until I try and add and item to the group I have created. 

When I run the VBA code Excel crashes with a just-in-time error.

Here is my code:

Dim OPCItemID1 As String
Dim ClientHandle1 As Long

OPCItemID1 = "[OPCLabel]BarcodeScanned" 'Scanned Barcode Value
ClientHandle1 = 1975

myOPCGroup.IsSubscribed = False 'Unsubscribe group before adding items

Set myOPCItem = myOPCGroup.OPCItems

myOPCItem.AddItem OPCItemID1, ClientHandle1

---------------

Does anyone have any ideas of what is wrong or know of a OPC DA automation wrapper that will work with Excel 2013?

 

Thank you 

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Christopher Panici
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01/31/2020 - 09:58
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I have the same issue - I am using OPCDAAuto.dll and it is not working with 64-bit excel.

PLEASE IF ANYONE HAS A NEW REDIST TO USE LET US KNOW.

Chris

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Meir Tseitlin
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07/20/2020 - 07:56
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I investigated this problem deeply and even though the sample OPC Foundation DA code wrapper provided in the examples can be compiled to 64 bit, there are many modifications that needed to made (I.e. 64 pointers are casted into 32bit variables - and this is why crash occurs). I assume that Graybox DLL was compiled without those modifications also (I experienced the same crash in my own DLL and in theirs).

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