Error -50103 occurred at DAQmx Start Task.vi

[Bill2002]

Hi,

I get this error when I try to run two separate VIs that both use DAQmx Create Virtual Channel (AI Voltage) and DAQmx Start Task. Is there some way to work around this without using a second board, or is this a fundamental limitation? I have an M-series board --  NI-PCI-6259.

Thanks,

Bill

[Dennis_Knutson]

You cannot have two separate tasks of the same type running simultaneously. You've got one A/D and one sample clock. Is there a reason you need two VIs? Why can't you have a single VI that uses multiple channels?

[Bill2002]

Thanks. The reason is that one of the VIs is a LabVIEW executable. I don't have the code, so I can't change it.

Bill

[Dennis_Knutson]

Then you are stuck. You can't run them both at the same time.