LabVIEW won't let me configure DAQ assistant

[cd384]

Hi,

When I launch the Data Acquisition with NI-DAQmx.vi and double click the DAQ assistant icon on the block diagram the program won't let me configure the DAQ.  Also, right clicking on the DAQ and selecting properties does nothing.  How do configure the DAQ to allow me to use input channels on my NI-ELVIS board and then display the output on graphs in labview?

Thank you.

[cd384]

I think there is something wrong with how LabVIEW and/or the NI ELVIS board are set up since it won't let me edit the properties of the DAQ assistant express VI.  Any ideas on what could be wrong?

I am new to using LabVIEW with the DAQ, so maybe there is something I am doing wrong.  Any help would be appreciated.

[Tom_W_[DE]]

HI cd-

Are you attempting to access the DAQ Assistant from a user-level Windows account?  This problem seems similar to what many users experience in that situation.  The easiest workaround is to use an account with administrator-level access.  Some users have found success using the suggestions in this KB.  Please let me know if the problem seems unrelated to these suggestions.

Thanks-

[cd384]

Yes, I am using a user-level account when I use the software.  I will contact the administrator and give this a try.

Thank you.

[Tom_W_[DE]]

Hi cd-

That sounds good- keep us posted.

[cd384]

I talked to the administrator and he knew exactly what to do.  I don't think he did exactly what you suggested, but he definitely fixed something related to my user account.

I also want to know if it is possible to have multiple DAQ assistants in one VI.  I kept getting errors when I tried to use two.  What I want to do is use two channels from the NI ELVIS board, but have two separate outputs from the DAQ assistant.  How do I separate the channels from one DAQ assistant?

[Tom_W_[DE]]

Hi cd384-

In general, you can have two (or more) DAQ Assistants in the same VI.  I assume, however, that you're trying to have separate DAQ Assistants for analog input and this definitely will not work.  You must group all tasks of the same type (analog input, analog output) within the same DAQ Assistant or DAQmx Task.  You can add multiple channels by holding control and selecting multiple items when you are initially configuring the DAQ Assistant.

In order to separate signals in LabVIEW you can use the Split Signals function that is available on several palettes.  To find it, just click "Search" from the functions palette and search for "Split Signals"

Thanks-