How indexes work – Emerson FM-3 User Manual
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FM-3 Programming Module Reference Manual
How Indexes Work
An index is a complete motion sequence that moves the motor a specific incremental distance
or to an absolute position. This motion sequence includes an acceleration ramp to a
programmed velocity, a run at velocity, and a deceleration to a stop.
Figure 21:
Index Motion Sequence
Velocity
Time
Acceleration
Deceleration
Run at Velocity