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MODBUS Communications Driver - Function QRF

Differences between 16 and 32 bit DLLs

16-bit

32-bit

Driver DLL

MBDRV16.DLL

MBDRVDLL.DLL

Driver Import Library

MBDRV16.LIB

MBDRVDLL.LIB

Though the code inside them is quite different, the 16 and 32-bit Driver DLLs function in much the same way. For the developer, the key differences are in the file names:

It’s worth repeating that all integers used by the Driver (except register addresses) are 16-bit integers on both 16-bit and 32-bit platforms.

The 16-bit Driver can be used (though generally with reduced performance) on 32-bit platforms, but the 32-bit Driver can only be used on Windows 95 or Windows NT. It cannot be used on 16-bit Windows.

Page 8

June 6, 1998

Revision 2.210

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