USB-6501 voltage generation

[fcal]

Hi all,

I'm very new to using LabView and NI devices, so pardon me if my question seems dumb.

I have a NI USB-6501 DAQ that I would like to use to connect to a device that will open or close a lid when triggered.

My question is: Is it possible to programmatically trigger the voltage output of the USB-6501?

I'm using LabView for this and I'm running on Windows 7. I couldn't find basics examples on LabView that were related to the voltage output for the USB-6501.

Any help would be really appreciated, thanks in advance

[Dennis_Knutson]

Not much good if you can't programatically set the outputs to a one or zero.

Where did you look? Help> Find Examfples> Hardware Input and Output>DAQmx> Digital Generation.

[fcal]

That's where I looked, I am currently using the "Write Dig Chan.vi" example, but I can't make it work so that it produces the behaviour I want.

Basically I would like to switch the voltage on and off programmatically. 

Thanks for your insights.

[Dennis_Knutson]

Do you get an error? What do you have connected to the output?

That example should work just fine as long as you have specified the correct channels. You can also test the board MAX. Assumimg the board is not broken, my guess is that you have a load connected that cannot be driven by the 6501.

[fcal]

Thanks for your replies.

Actually my problem was that I wanted to shut the output voltage of all the pins. I managed to do this by using the example and adapting it.

[SnowMule]

You'll want to use DAQmx Write.  Single channel, single sample boolean for one line. 

Look at the example code, there's several examples on how to read and write various formats (booleans, array-of-bools, ints) to the lines/ports.

[fcal · Accepted solution]

Thanks for your replies.

After some modifications the example "Write Dig Chan" helped me get the behaviour I wanted, namely switching on and off a connected device.