I am trying to run a simple code to read three channels from each of the three modules. I am using the LabVIEW express VI as shown in the image below.
When I run the code with the two task as shown in the image the code runs fine. As soon as I add a third task (using the express VI), I receive error-200022. This error switches from task to task each time I run the code.
Is there a way to manually code around the Express VI to run 3 or 4 simultaneous tasks?
Are these tasks analog inputs? Please refer to the following document regarding the error: http://digital.ni.com/public.nsf/allkb/5664C009DA244727862571E900046775.
I recommend ensuring that your tasks do not share any channels. Otherwise, the following link provides some information on how many tasks can concurrently run on your chassis: http://digital.ni.com/public.nsf/allkb/5E0B829E50ADE1BC86257AC50062B2D2?OpenDocument.
Do you have any tasks running in NI-MAX?
Yes, these tasks are all analog inputs.
I have checked all of the channels and have ensured that none share the same channels. They are each pulling 3 channels from a separate module.
In total, I would only be running 3 tasks, which is less than the limit on the chassis (the eventual goal would be 4), each reading 3 channels from the modules. I believe this should be able to function properly.
There are not any tasks running in NI-MAX.
Thanks for the help,
The cDAQ 4 slot chassis can only have 2 AI Tasks. BUT, there is no reason why you cannon have 1 TASK using channels from all three AI modules.