RDA and MAX

[sugar7]

Dear community,

I have a short question on a strange behavior of vi containing legacy DAQ functions.

I need to start NI MAX first before launching Labview and vi files, otherwise

loading hangs up at /DAQ/lvdaq.dll. Any traditional DAQ channels cannot be created on the front panel,

any data acquisition vi cannot be used.

Also, without staring MAX first, I cannot open Labview example vis in "daq" folder.

It seems somehow that lvdaq.dll cannot be loaded properly.

However, if I delete a legacy device created RDA needed for data acquisition, then everything works without any issues.

Would you tell me how to fix this problem?

Thank you for your time and kind advice.

Sugar7

[Inachosa]

Hi, could you tell me a little bit more about that legacy device. What is that device specific function? Does the problem occurs as soon as you create/connect that device?

[sugar7]

Hello

Thank you for your message.

A PCI-6014 DAQ card is on a remote computer and I'd like to access to this card through RDA for a simple analog input measurement.

I could recognize this card on a client computer and a test on MAX was also fine.

If I close MAX and try to open a Labview vi file which contains NI-DAQ functions, loading always hangs up at /DAQ/lvdaq.dll.

In another example, If I create a NI-DAQ channel on a blank front panel, Labview itself got frozen.

However, if MAX is launched first, then these problems never show up.

My guess is that loading lvdaq.dll has a problem.

If you need more info to fix this issue, please let me know.

I appreciate your kind support.

[Dennis_Knutson]

I'm not sure I can help since I haven't used traditional daq or rda in a very long time but what is your os and versions of LabVIEW and daq driver?

[Inachosa]

Hi, thank you for your response. I think there might be an issue related to the DAQmx drivers, so could you install the latest version of DAQmx? This is the latest version of DAQmx http://www.ni.com/download/ni-daqmx-14.5/5212/en/    but as asked on the last thread, which version of labview and OS are you using?

[Dennis_Knutson]

Inachosa,

The poster is using traditional DAQ and not DAQmx. DAQmx does not even support RDA.

[sugar7]

Good morning,

Client computer: Windows xp, Labview 2010

Remote computer (PCI-6014 installed) : Windows xp, Labview 6.1

I'm wondering whether 6.1 is too old or not.

If you need more info, plz let me know.

Thank you for your time and kind support.

[Dennis_Knutson]

You could provide the information I asked for about the version of the daq driver.

[sugar7]

I forgot to add it.

Client: Traditional NI-DAQ 7.4.4f7

Remote: Traditional NI-DAQ 7.1.0f1

I'll upgrade to 7.4 for remote, not 7.4.4 because Labview 6.1 is not compatible with 7.4.4.

Is this version difference the reason of weird behaviors?

Thanks.

[Dennis_Knutson]

That's a possibility. I only ever used RDA once or twice and I'm sure I had the same versions running on both computers.