On NI 6501 and NI DAQmx base

[avalox]

I want to use this new 6501 USB digital IO device, they say it uses NI DAQmx base driver. Can I develop my application in VB? I never before have used NI DAQmx nor NI DAQmx base, I would like to be sure before making a desicion.

Pakko.

[Ryan_V[DE]]

Pakko,

Are you using VB.Net or VB 6.0? If you are using 6.0, things are a little more difficult because the language does not support the cdecl calling convention. You would have to generate a C wrapper that exported the functions using the stdcall convention. More information can be found in this thread:

http://forums.ni.com/ni/board/message?board.id=230&message.id=2257&requireLogin=False

Additionally, it appears that someone has already done this here:

http://forums.ni.com/ni/board/message?board.id=beta4&message.id=2

If you are using .Net, you just have to declare the DAQmx Base functions at the top of your program. Be sure to set the calling conventionto cdecl. More information can be found here:

http://forums.ni.com/ni/board/message?board.id=232&message.id=1524&requireLogin=False

I hope this information helps. Please let me know if you require further assistance.

Regards,
Ryan Verret
Applications Engineering
National Instruments
http://www.ni.com/support