Academic Company Events NI Developer Zone Support Solutions Products & Services Contact NI MyNI
1 ratings:
 4 out of 5     Rate this Document

Accessing More Than 2 Counters And 8 DIO Lines in Traditional NI-DAQ Test Panels

Primary Software: Driver Software>>NI-DAQ
Primary Software Version: N/A
Primary Software Fixed Version: N/A
Secondary Software: N/A
Hardware: Counter/Timers (TIO)>>Devices>>PCI-6601, Counter/Timers (TIO)>>Devices>>PCI-6602, Counter/Timers (TIO)>>Devices>>PXI-6602

Problem:
For my 6602, when I use Traditional NI-DAQ test panels in Measurement & Automation Explorer (MAX), I only see the option to test the first 8 digital lines and the first 2 counters. How can I access all 32 digital lines and all 8 counter lines?

Solution:
This is a known limitation of Traditional NI-DAQ.  The Traditional NI-DAQ test panels in MAX only support the first two counters and the first eight digital lines.

For new applications, it is strongly recommended that the DAQmx API is used instead of Traditional NI-DAQ. In DAQmx, all counters and digital lines can be accessed with no problems using both the DAQmx Test Panels in MAX or any other development environment, such as LabVIEW or LabWindows/CVI.

Note that although these channels do not appear in the Traditional NI-DAQ test panels in MAX, this does not affect programming these channels in LabVIEW or any other development environment. Using the Traditional NI-DAQ API you will have full access to address and use any of these channels from your chosen development environment (LabVIEW, CVI, Measurement Studio, etc). You just will not be able to access all of the lines using the Traditional NI-DAQ test panels.

Related Links:
Developer Zone Tutorial: Transition from Traditional NI-DAQ to NI-DAQmx in LabVIEW
Developer Zone Tutorial: Answers to Frequently Asked Questions about NI-DAQmx and Traditional NI-DAQ (Legacy)

Attachments:





Report Date: 10/09/2008
Last Updated: 11/05/2008
Document ID: 4Q8AD44M

Your Feedback! poor Poor  |  Excellent excellent   Yes No
 Document Quality? 
 Answered Your Question? 
  1 2 3 4 5
Please Contact NI for all product and support inquiries.submit