Use NI 9402 to Acquire a Position Measurement from an Encoder

Updated Aug 17, 2023

Environment

Hardware

  • NI-9402
  • cDAQ-9191

Software

  • Measurement & Automation Explorer (MAX)

Driver

  • NI-DAQmx

This guide walks through how to use an NI 9402 with a cDAQ chassis to acquire the position measurement of an encoder using NI-DAQmx. 

Useful information:

To acquire the position measurement you must consider:
  1. Check the NI 9402 pinout.
  2. Following the indications provided in the document Measuring Angular Displacement>Making Signal Connections, you can identify where to connect pins A, B and Z of your encoder. In particular, for NI 9204:
    • MeasurementCtr0Ctr1Ctr2Ctr3
      Position
      Measurement      		A: PFI 0
      B: PFI 2
      Z: PFI 1      		A: PFI 3
      B: PFI 1
      Z: PFI 2      		A: PFI 1
      B: PFI 0
      Z: PFI 3      		A: PFI 2
      B: PFI 3
      C: PFI 0
  3. Now, you can configure an encoder measurement from MAX.

Related Links

NI Hardware Encoder Measurements: How-To Guide

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