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Example Code

Updating Counter Frequency and Duty Cycle On the Fly

Products and Environment

This section reflects the products and operating system used to create the example.

To download NI software, including the products shown below, visit ni.com/downloads.

    Hardware

  • Data Acquisition (DAQ)

    Software

  • LabVIEW

    Driver

  • NI DAQmx

Code and Documents

Attachment

Overview
The example is to demonstrate how to update the desired parameters of the counter output while the VI is running

Description:
The operation of the counter output is usually already defined first before it runs, but sometimes, we would like to alter the parameters of the output that we have. With that in mind, this VI would show you how to access the parameters of the counter output while also leveraging the event structure of the VI.

Steps to Implement or Execute Code:
To implement this example:

  1. Define the Physical Channels
  2. Set the value of the parameters as needed
  3. Run the VI
  4. Change the parameters to ensure the effectiveness of the VI
  5. (Optional) Turn on the Highlight Execution to see the flow of the VI


To execute this example:

  1. Install the required software.
  2. Connect the DAQ hardware that supports the Counter features
  3. Confirm the connection with the MAX with TestPanel
  4. Open the VI and refer the Implement Steps


Requirements
Software
LabVIEW 2012 or compatible
NI-DAQmx 9.0 or compatible

Hardware
cDAQ with C series Counter Module

 

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**This document has been updated to meet the current required format for the NI Code Exchange.**

With warm regards,

David D.

Example code from the Example Code Exchange in the NI Community is licensed with the MIT license.

Comments
Todd S.
NI Employee (retired)
on

Thanks for posting!  When you get a chance, could you add a screen shot or two to give folks an idea of what your code looks like?  Thanks!

Todd S.
LabVIEW Community Manager
National Instruments
Todd S.
NI Employee (retired)
on

Thanks Doc!!!

Todd S.
LabVIEW Community Manager
National Instruments