Keep getting signal from the DAQ assistant

[Mo17]

Hello,

i generate simple VI to generate analog voltage, but i keep geeting signal even i stop the program. Anabody know the problem?

thank you

[RavensFan]

What do you mean?  Do you mean that if you output a voltage other than 0, you still see that voltage?

That is not a problem.  That is the way DAQ boards are designed.  If you want the voltage to go back to 0, the you need to write that value using a DAQmx Write before you end your program.

[Blokk]

Do not use the DAQ Assistant, you can have much better flexibility and performance with the low level DAQmx VIs: http://www.ni.com/product-documentation/5434/en/

[Mo17]

yes, i need output the voltage let say (2 V) for 2 mintues and then go back to 0V. i'm outputing the voltage to micropump i want to run the pump for 2 mints and stop. but in my case keep getting the voltage even i stop the VI and even exit the LabView program.

Thank for your help 

[GerdW]

Hi Mo,

set the output to "2", then wait for 2mins, then set the output to "0"…

You might want to learn about state machines. They can make your life easier! 😄

(For your simple requirement even a FOR loop with an array input of [2, 0] will do.)

[Mo17]

Sorry for the to much quistions.i'm new to Labview and i have to use it. 

Is there any example to do that?

thanks

[GerdW]

Hi Mo,

i'm new to Labview and i have to use it. 

In the header of the LabVIEW forum you will find several links to learning resources.

Just use them!

Is there any example to do that?

LabVIEW comes with a lot of example VIs. Just use the example finder in the help menu! (Maybe after doing those beginner courses mentioned above…)

[Mo17]

Thank guys for your help. I got it.