MODBUS Communications Driver - Function QRF
Differences between 16 and 32 bit DLLs
Driver Import Library
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.
June 6, 1998