8.5.10 Method (7) to (10):
8.5.10.1 Method (7): Reference mark, zero pulse and positive
limit switch
l
The start movement is in the direction of the positive, right hardware limit
switch. Both it and the reference mark are inactive.
l
The direction of movement reverses after an active reference mark. The zero
point corresponds to the first zero pulse after the falling edge.
l
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.
l
The first zero pulse after passing the reference mark is the zero point.
Image 8.51: Reference mark, zero pulse and positive limit switch
8.5.10.2 Method (8):
l
The zero point is the first zero pulse if the reference mark is active.
l
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.
l
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.
MOOG
ID No.: CB40859-001 Date: 11/2020
MSD Servo Drive - Device Help
258
8 Motion profile
Image 8.52: Zero point corresponds to first zero pulse
8.5.10.3 Method (9):
l
The direction of movement changes when the reference mark becomes
inactive. The zero point corresponds to the first zero pulse after a rising edge.
l
The zero point is the first zero pulse if the reference mark is active.
Image 8.53: The direction of movement changes when the reference mark becomes
inactive.
8.5.10.4 Method (10):
l
Once the reference mark has been passed, the first zero pulse after the
falling edge is the zero point.
