How to connect multiple DAQ in labview

[Minnie.L]

Hi, 

I have a question about connecting multiple DAQs to the labview. 

So, currently I have two NI 6210 DAQs, each with 16 channels. I would like to simultaneously collect data with 32 channels, so I plugged both DAQs into the USBs on my computer. I am wondering which function block that I could use to look for and combine the data from two DAQs in Labview? Currentlly I used a DAQ assistant to read data from one of my DAQs. I tried adding another DAQ assistant block, and then merge the two blocks, but it doesn't work. 

Please advise. If there is any similar post, I would really appreciate if you could direct me to those. 

Thank you very much!

Best,

Minnie

[Michel_Gauvin]

You can look at the following example in NI Example Finder.

[crossrulz]

Can you share some code?  What do you mean by "it didn't work"?

From I am seeing with that board, you will need 2 DAQmx tasks (DAQ Assistants), one for each board you want to read from.  From there is it a matter of how you want to manage your data.

[ben64]

If all channels perform the same type of measurements you can just add the channels of the second daq board in the same daq assistant. The daqmx read will output an array of 32 values (assuming you use the 32 available channels).

You should provide us with more details.

Ben64

[crossrulz]

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@ben64 wrote:

If all channels perform the same type of measurements you can just add the channels of the second daq board in the same daq assistant. The daqmx read will output an array of 32 values (assuming you use the 32 available channels).

You should provide us with more details.

Ben64

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That may not work with M series cards (unless NI changed something on me).  Last I checked, M series and older needed to have seperate tasks to run, meaning you would need two DAQ Assistants.

[ben64]

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@crossrulz wrote:

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@ben64 wrote:

If all channels perform the same type of measurements you can just add the channels of the second daq board in the same daq assistant. The daqmx read will output an array of 32 values (assuming you use the 32 available channels).

You should provide us with more details.

Ben64

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That may not work with M series cards (unless NI changed something on me).  Last I checked, M series and older needed to have seperate tasks to run, meaning you would need two DAQ Assistants.

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Works with simulated devices but it will need to be verified on real devices.

Ben64