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How do I Address an AMUX-64T with an MIO Board?

Primary Software: Driver Software>>NI-DAQ
Primary Software Version: 7.2
Primary Software Fixed Version: N/A
Secondary Software: N/A

Problem: What is the easiest way to address my AMUX-64T board with my MIO board using LabVIEW?

Solution:
First you need to ensure that the AMUX-64T board(s) are setup. Depending on which version of NI-DAQ you are using this may be different.

NI-DAQ 6.1 and before
 Set the number of AMUX boards used in the NI-DAQ Configruation Utility under the Properties/Accessory tab for the particular MIO device.

NI-DAQ 6.5 and later
 First, you need to define how many AMUX-64T boards you are going to use. You will set this in the Measurement & Automation Explorer (MAX). Locate your data acquisition board under Devices and Interfaces. Right-click on the board and select "Properties". Select the Accessories tab and choose the listing for the AMUX-64T that specifies how many of them you are using.

Every four channels on the AMUX-64T board are multiplexed to one channel on the MIO board. For example, the first 4 channels of the AMUX-64T are referenced to channel 0 of the board, the second 4 channels are referenced to channel 1 of the board.

You can then reference the AMUX-64T using the normal MIO channel strings. For example, with one AMUX-64T board, the channel string "0:1" will acquire data from AMUX-64T channels 0 through 7, and so on.

You can also acquire data from a single AMUX-64T channel by using the channel string AMy!x, where x defines the channel number and y defines the number of the desired AMUX-64T board (y=1 if you have just one AMUX configured). For example, AM3!8 will return channel 8 on the third configured AMUX-64T.


Related Links: Product Manuals: AMUX-64T User Manual (January 1999)
KnowledgeBase 207G055U: How Can I Access the DIO Lines of My MIO Board With the AMUX-64T?


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Report Date: 01/05/1996
Last Updated: 05/13/2004
Document ID: 0H4DGI95

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