Solution:

We have developed the 32-bit DLL driver for PCL-841. And you can program your code directly with VC++ directly, and users do not have to transfer the DOS program to VXD by themselves. After installing the 32-bit DLL driver in the CD, you can find series of example in 'c:\program_file\advantech\adsapi\EXDevNet\', and within which the '841M' is to demonstrate how to use DLL driver for PCL-841. And the other examples are to work with ADAM-5000 CAN DeiviceNet firmware. If you want to know more about the 841M example, you can refer to the FAQ database about PCL-841 on the web site to get further information.