How do I configure DAQmx Send Software Trigger?

[StuJ]

I am new to this software package.  I'm trying to configure my aquisition to start collecting sample when I press a button on the screen.  I have a working vi.  However, it begins collection data as soon as I run it.  I am using a M series board and DAQmx controls.

[Michael.Phillips]

StuJ,

If you want to begin collecting data after pressing a button on your front panel, you can simply put a while loop before the DAQmx Start Task/DAQmx Read VI. Wire the conditional terminal to a "start" button. This will repeatedly check the value of the button, and exit the loop when the button has been pressed. If you are using the DAQmx Create Channel VI and/or the DAQmx timing VI, put the while loop after these and wire the task output/error lines through the while loop.

Keep in mind that you most likely want to put a Wait in the while loop so that your system is not constantly polling the control.

Michael P

National Instruments