Error while running LabView and Matlab on the same card

[AnandKulkarni]

I am trying to output a sine wave through an AO channel (using Matlab function analogoutput) on a NI DAQ card and have it read on an AI channel on the same DAQ card through a LabView executable. The LabView executable also outputs data on a different (than the Matlab controlled channel) AO channel. I understand that the multiple applications cannot do the same function (e.g. input or output) on the same DAQ card. What I want to confirm is whether the error that I am getting is a direct result of this conflict. Here is the error message:

Error using daq.analogoutput_nidaqmx_1_5/start Two or more properties that drive a line are set to the same terminal. Check the settings of properties ending in 'DriveLine'.

When I used the object inspector to view the properties of the analog output object, I noticed the following values for the relevant properties:

ExternalClockDriveLine : None

ExternalTriggerDriveLine: None

Thanks!

Anand

[M.J]

Hi Anaud,

Which DAQ card are you using and how is your code setup in LabVIEW?

[AnandKulkarni]

Hello MJ,

                             I am using the PCI 6259 DAQ board. The code in LabView generates a digital pulse on p0.0 in response to a prespecified input. This pulse is jumpered to USER1 on the spring terminal. USER1 BNC connector is jumpered to the PFI0 connector. The channel ao0 is triggered by PFI0 and plays a wav file containing white noise. 

Hope that makes it clearer.

Thanks!

Anand

[M.J]

Hi Anaud,

Are you getting a error code along with the error message?

It seems like the output funtion is not being terminated properly which would cause the card resources to lock up and become unacessible.