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After a falling edge from the reference mark: The first zero pulse corresponds
to the zero point.
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After an active reference mark: The zero point corresponds to the first zero
pulse after the falling edge.
Image 8.54: Zero pulse after falling edge corresponds to the zero point.
MOOG
ID No.: CB40859-001 Date: 11/2020
MSD Servo Drive - Device Help
259
8 Motion profile
8.5.11 Method (11) to (14): Reference mark, zero pulse
and negative limit switch
8.5.11.1 Method (11)
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Reversal of direction of movement after active reference mark. The zero point
corresponds to the first zero pulse after the falling edge.
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Zero point at the first zero pulse after falling edge from the reference mark.
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Movement must have gone beyond the reference mark, then the first zero
pulse corresponds to the zero point.
Image 8.55: Reversal of direction of movement after active reference mark
8.5.11.2 Method (12)
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Zero point corresponds to the first zero pulse if the reference mark is active.
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Reversal of direction of movement after a falling edge from the reference
mark. The zero point corresponds to the first zero pulse after a rising edge
from the reference mark.
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Reversal of direction of movement when the reference mark has been
passed. The zero point corresponds to the first zero pulse after a rising edge.
