42.6.2.6.4 Speed Measurement

Three types of speed measurement can be done using velocity event output (VLC) and Timer/Counter (TC/TCC) device resources.

  • Continuous velocity measurement: TCz measures the time on which n VLC (TCy) output events occur
  • Synchronous Velocity measurement: On a specific motor position TCCz, the time is measured on which n VLC (TCCy) output events occur.
  • Slow Velocity measurement: measure the number of VLC output events (TCCy) plus the delay since the last VLC output event (TCCz) within a given time slot (TCk).
Figure 42-8. Speed Measurement