Archived:Methods for Saving Data Generated on a Real-Time Series DAQ Device

Updated Mar 8, 2019

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Reported In


  • PCI-7041
  • PXI-7030
  • PCI-7030
  • PXI-7041


  • LabVIEW

Issue Details

Real-time (RT) Series DAQ devices, such as the 7041/7030 series devices, do not have a hard drive. How can I save the data acquired by these devices to a file?


Since the RT Series DAQ devices do not have hard drives, data acquired by these devices must be transferred back to the host machine and saved there. There are several methods available for transferring data from the RT Series DAQ Device back to the host. These methods include: 
  • TCP/IP
  • Shared Memory
  • VI Server
Examples ship with the LabVIEW Real-Time Module that demonstrate the functionality of these different methods. These examples are located in the LabVIEW directory on your hard drive in the [LabView Folder]\Examples\Real-Time library.

TCP/IP and VI Server are good for transferring larger amounts of data. These methods can also automatically determine if all the data was transferred correctly from the RT Series DAQ Device to the host VI. Shared Memory VIs do not automatically check for the success of each data transfer so you must write your own routines to make sure the data transfers successfully.

Once data is successfully transferred back to the host machine it can be saved by adding file I/O functionality to the host VIs.


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