Problem:
After installing an older OPC server, DA 2.0 asynchronous I/O no longer works. |
Solution:
The old installation program installed and registered its own (older) version of the OPC proxy/stub DLL.
Reinstall the standard OPC proxy/stub DLLs, using an up-to-date installation program or re-register them using the REGSVR32 command-line utility (refer to the section in your user’s guide titled Installation for more information on using REGSVR32). |
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Category:
OPC Servers |
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