Display counter output on graph

Question

I have two counters generating continuous digial pulse trains from my PCI 6010, and I'm trying to display the output on a graph.  I've got the output of one counter connected to an AI line that leads to a waveform graph, but I can't get anything on the graph.  I've measured the output via external means, so I know the counters are generating the appropriate pulses.
Eventually I'd like to have some sort of indicator for each counter that indicates whether the counter is in the 'on' or 'off' state, but I figured getting the counter outputs to diplay on a graph would be a good first step.
My VI is below; the display part that isn't working is at the bottom of the case structure.
Thanks.

Answer 1

Once your code goes into the inner while loop your graph will never be updated since it will only execute one time. In order to update the graph continually you will need a parallel which handles the graph updates. A good way to pass data between the parallel tasks is a queue.
Mark Yedinak
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