DAQmx with signal generation

Question

Hello,
I am working on converting my current test code that used Traditional DAQ to DAQmx. I need some help with DAQ Waveform Generation.
In my current code I am using the Traditional DAQ to send a Sinewave output on on the DAC0Out on my PCI-6036E card. I have it set-up so I can runt he VI and when the Vi stops the Signal Keeps going until I tell it to stop. I need to do the same thing with DAQmx. I found that the example 'Cont Gen Voltage WFM-INT Clk-Variable Rate.vi does everything I need but when the VI stops so does my signal. What can I do to make it so the signal stays running when my vi stops.
this VI is a Sub in my program, the user is able to control a boolean to start and stop the waveform, I cannot keep it in a loop as they may want to turn ont he waveform and perform other tasks then turn it off.
I am trying different things as well, but any help would be appreciated.
Oh yeah, this is an XP machine running  LabVIEW 8
Jeff D.
OS: Win 7 Ultimate
LabVIEW Version: 2011,2010,2009 installed
Certified LabVIEW Architect

Answer 1

Hello Jeff,
To continue to output a signal after you have stopped and closed the VI, you use the auto cleanup terminal on the DAQmx Create Channel VI.  Auto cleanup specifies if LabVIEW automatically destroys the
task when the application completes execution. If auto cleanup is FALSE, LabVIEW does not automatically destroy the task until you exit
LabVIEW. But you can use the DAQmx Clear Task VI to manually
destroy the task.
I'm attaching a modified version of the Cont Gen Voltage WFM-INT Clk-Variable Rate.vi that continuous to generate the AO signal until you close LV.
Good luck!
Micaela N
National Instruments
Attachments:
Modified Cont Gen Voltage Wfm-Int Clk-Variable Rate.vi ‏47 KB