LabVIEW

cancel
Showing results for 
Search instead for 
Did you mean: 

[urgent!!] my DAQ does not response to change value anymore

Hi everyone,

when i connect my DAQ to a control box - it can control my LEDs intensities.

now i import the values through text file to lab view and i use array indexing to send the values to the DAQs but the intensities of my LEDs dont really change anymore. 

 

please help me its very urgent!

i have checked the hard ware piece by piece all respond.

 

note, when i used the voltameter to check the analogue ports of the DAQ i can see the voltage there but it does not change the intensitiy which is weird i dont find any reason for that !

hardware was checked so it must be software.

 

thanks!

 

0 Kudos
Message 1 of 19
(3,420 Views)

In order to recieve any help, you need to specify your problem.

 

Once you ruled out all possible reasons except software, try posting the source code that does this.

0 Kudos
Message 2 of 19
(3,414 Views)

here is my VI

thanks alot 

0 Kudos
Message 3 of 19
(3,409 Views)

Did you enable the code in the "diagram disable structure" again?

0 Kudos
Message 4 of 19
(3,398 Views)

yes i did, still not working!

0 Kudos
Message 5 of 19
(3,395 Views)

Can you show is the program that controls the LEDs directly, without reading the values from a file? Does that one still work?

Why are none of your errors hooked up? Maybe they are trying to tell you something interesting.....

 

(Sorry, I don't have DAQ installed, so I cannot look at your express VIs).

0 Kudos
Message 6 of 19
(3,392 Views)

when i use CONTROL box and i write values myself using the keyboard, the DAQ changes my LEDs intensities.

but when i read from a text file to labview the intensities do not change.

i noticed something, the control box are white, while this one is gray, do you think that is related?

 

0 Kudos
Message 7 of 19
(3,377 Views)

What "CONTROL box" are you talking about?  I don't see anything named that in your VI.

 

Are you remembering to hit the display spectrum button so that the event case gets triggered?

0 Kudos
Message 8 of 19
(3,373 Views)

when i add the DAQ assistent and and right click on its data port and choose create control i get a box when i change its value the intensities change.

but when i use the text file reading it does not change.

yes i remember to trigger it

0 Kudos
Message 9 of 19
(3,360 Views)

check the attachement please to get what i mean. this case it works.

 

the VI i sent you it uploads the textfile and then using array indexing i pass data to the DAQ, it does NOT work.

0 Kudos
Message 10 of 19
(3,359 Views)