inputs and outputs analog digital usb 6009

I'm having a problem with my USB 6009 in labview programming.  I try to read continuously from the analog inputs while having an event focused on digital output within the same program/vi.  Basically, I need to taste all the time the analog inputs while having an event defined by the user (button control) to signal the digital inputs to turn on then after awhile.  The event of digital output must be independent of the analog sampling system.  I was throwing the "error already allocated resource" in most of the vi, I wrote to try to achieve.  What is programmatically possible with usb 6009?  I am at my wits end trying to do this and any help would be greatly appreciated (by myself and my boss).  Thanks in advance for your answers.

RJ


Tags: NI Software

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