Archive for the ‘error’ Tag

Quit all loops when an error happens in one loop

Thursday, August 22nd, 2013

When I tried to do parallel tasks (e.g. multiple producer/consumer loops) in LabVIEW, it was always painful to quit all loops “elegantly”. What I wanted was a notifier to tell all loops when an error occours in any loop. I know there are a few error manager VIs in the internet already but I just reinvented the wheel anyway.

In this error there are 3 states: reset (clear errors in the shift registor), read (monitor if there is an error) and hold (stop reading when error).

sub3 sub1 sub2

So I sort of created a functional global variable here using the single loop to store the error. You can use this VI in every loop and it will quit all loops if an error happens. Here is an example:

topNote that we need to initialize the error manger before using it. When an error button is pressed in a loop, all loop will quit.

Hope this is useful to you:)