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How Do I Determine the Number of DMA Channels on an S Series Device?

Hardware: Multifunction DAQ (MIO)>>S Series

Problem:

How do I determine the number of DMA channels on an S series device?



Solution:

The majority of S Series devices have 3 DMA channels; however, there are a few exceptions.  Below is a table detailing the number of DMA channels for S series devices.

 

S Series Device # of DMA Channels
PCI-6110 3
PCI-6111 3
PCI-6115 3
PCI-6120 3
PCI-6122 3
PCI-6123 3
PCI-6132 3
PCI-6133 3
PCI-6143 3
PCI-6154 4
PXI-6115 3
PXI-6120 3
PXI-6122 3
PXI-6123 3
PXI-6132 3
PXI-6133 3
PXI-6143 3

The DAQ Device Property Node can be used to find the number of DMA channels on a NI-DAQ Device.  Attached is the LabVIEW 8.2.1 VI used to determine the number of DMA channels on a DAQ device.  The steps to produce this VI are also detailed below.

Steps to set up DAQ Device Property Node for DMA Channels:

  1. Right click on Block Diagram and choose Measurement I/O » NI-DAQmx » Advanced » System Setup » Device Node.
  2. Expand property node so that there are two properties
  3. Right click on second property and choose Properties » Bus » Number of DMA Channels
  4. Right click on NumDMAChans and create indicator
  5. Right click on ActiveDev and create constant.  Select the your S series device from the drop down menu.

  6. Run the program and view the DMA channels on the front panel.

 



Related Links:

Attachments:
DMA Channel CountDMA Channel Count.vi

Report Date: 07/20/2007
Last Updated: 08/30/2007
Document ID: 4BJEE6HB

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