The first zero pulse after a rising edge from the reference mark is the zero
point/homing point.
Fig. 8.50: Negative (left) hardware limit switch and zero pulse
MOOG
ID
No.:
CB40859-001
Date:
02/2018
MSD Servo Drive - Device Help
197
8 Motion profile
8.5.10 Methods (7) to (10):
8.5.10.1 Method (7): Reference mark, zero pulse and positive
limit switch
The start movement is in the direction of the positive, right hardware limit
switch. Both it and the reference mark are inactive.
The direction of movement reverses after an active reference mark. The zero
point corresponds to the first zero pulse after the falling edge.
The start movement is in the direction of the negative, left hardware limit
switch. The homing point is set at the first zero pulse after a falling edge from
the reference mark.
The first zero pulse after passing the reference mark is the zero point.
Fig. 8.51: Reference mark, zero pulse and positive limit switch
8.5.10.2 Method (8):
The zero point is the first zero pulse if the reference mark is active.
The direction of movement reverses 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.
The direction of movement reverses when the reference mark has been
passed. The zero point corresponds to the first zero pulse after a rising edge.
