Tachometer

Overview

This input is designed for use with a tachometer output. The coprocessor counts the number of pulses registered on this input, making it available to the system.

MX-4

• CT

  • Supports slow signal changes; can be used as a digital input.

• CT GL

  • From hm001-1-P1C, tachometer will work up to 20kHz.
  • hm001-1-P1B and older support slow signal changes.

• T30 and T30 FR

  • Support slow signal changes; can be used as a digital input.

Examples

• Read

cat /opt/hm/pic_attributes/c3_counter

• Reset counter

echo 0 > /opt/hm/pic_attributes/c3_counter

MX-V

Supported up to 20kHz.

Example

• Read

cat /sys/bus/iio/devices/iio:device0/in_voltage24_TACHOMETER_VALUE_raw