daq question

[MaveenD]

Hi volks,

It would be great help if someone helps me with the DAQ Problem.

I have a third party DAQ to get digital I/O so i have in total 16 I/Os.

It is divided into two 8 ports.
I cannot use 1a port as input and 2a port as ouput simultaneously. Can you explain why it happen ? can some one give me a solution?

[GerdW]

Hi Maveen,

you should ask your "3rd party DAQ" manufacturer!

Or atleast you should name that 3rd party device and maybe provide a link to it's manual...

[MaveenD]

Thank gerd.

I have the manual.

[moderator1983]

By seeing the manual, it is possible to set each ports as either input or output...!!
Ca you also upload the LabVIEW drivers that you're using and the code you have developed...??

Are you experiencing any error after running your code...??

[MaveenD]

Nope If i have the output turn on . If it gonna acquire data then the whole output becomes zero.

I really didn get the thing.

[ejkaiser]

You probably have to do it sequentially. Turn input on, measure, then turn output on and so forth. Many low cost DAQ devices cannot handle channels simultaneously. This can be an issue if you have to measure a signal resulting form the output.

Cheers

Edgar

[GerdW]

Hi Maveen,

the manual says "You can configure each digital port for either input or output."

You cannot mix in/out operations on one port...

But: you could use both ports and use one as input and the other as output!