Error 200288

[karthikj85]

I am trying to write a program in labview using USB 6211 as my Daq card to achieve the following:

I need to output a constant DC voltage of 5 V if my input voltage is less than 3.

Output -5 if my input is greater than 7.

 output same as before if input is >3 and <7.

I have the case structures all set ,but I am getting an Error 200288 which has something to do with loop execution.

I have tried a few of the solutions found in the forum,but have been unable to  solve the problem.

I am attaching the code. Testing feedback.vi is my mail program..untitled8 and untitled4.vi are also required to run this program i think.

Thanks and regards ,

 Karthik Jay

[AdnanZ]

You didn't attach your code.

[karthikj85]

oops.. sorry..

[AdnanZ]

You have complicated your code by using regeneration when you actually don't need it and have not taken the necessary steps to address it. Have a look at the attached code (I just generated one by using the DAQmx examples). Hope it helps!

[karthikj85]

Hey,

I am unable to open the VI since I am using Labview 8.5 and you are using 8.6.

I would be greatful if you can save them with the previous version and post the VI again.

Thanks,

Karthik

[AdnanZ]

Sure. Saved in LV 8.0.

[karthikj85 · Accepted solution]

I have one last problem here.

I have to get 2 input signals to the VI.

One of them runs thru the case structure and the other just has to be displayed.

I copy pasted a few sub vis and tried to run it.

However i am able see only one signal being read. I have attached the VI .

I am really grateful to NI for such a great customer supprt system.

You saved me a lot of time and effort with your help and guidance.

Thanks people.

[Dennis_Knutson]

You've made a very common mistake. You CANNOT have two separate tasks that use the same resource. Combine your analog inputs into a single task. That means only one DAQmx Create Channel and only one DAQmx Read.

[karthikj85]

OK. thanks.

I now have both the Create Channel .vi in series .

I changed the DAQmx read.vi for Multiple channels>>Multiple samples>>2D DBL

Now i need to seperate the two inputs ,perform the logic operation on one and just display the other.

Could you give me info /link on how to do that?

Thanks,

Karthik

[karthikj85]

ok. i used array indexing and got the values out.

Thanks..