QMH - Enqueue Element Error Code 1

[TIW]

Hi, I have attached the VI I am having trouble with.

This is a rather simple QMH. It has an EHL and two MHL. When I run the VI in "Highlight Execution" mode no error is produced. However, if I run the VI at the speed it is intended to run at then there is an error produced in my EHL. Please note that I have implemented multiple error clusters so that is is easy to see where the error is coming from.

Hopefully, this is a fairly straightforward issue that I have somehow missed.

Any thoughts/suggestions on how to fix this error?

P.S. I have simplified this VI greatly from what it used to be - but it still does not work.

[TIW · Accepted solution]

Hi all, I have fixed my error. 

I neglected to place my "STOP" boolean control within my EHL and wire a "True" constant to the 'stop while loop'.

Please see the attached file for my fix.

Thanks!

[crossrulz]

General Comments:

1.  A loop should only be reading from 1 queue.  If one queue does not have any data, it will keep you from processing data from the other queue.  So if one of your producer loops crashes, it will freeze your consumer loop.  The fix is to have 1 queue specific for the consumer loop and the other loops can write to the same queue.

2.  Only the loop that reads the queue should close it.

[TIW]

Thank you for the feedback my friend.

I will definitely make sure I change my code accordingly.