8.5.9 Homing methods 5 and 6: Negative reference mark
and zero pulse
8.5.9.1 Method (5): Start movement in direction of positive (right)
hardware limit switch with zero pulse
l
Start movement in direction of positive (right) hardware limit switch; at this
time the reference mark is inactive.
l
The first zero pulse after a falling edge from the reference mark is the zero
point/homing point.
l
The direction of movement reverses on an active edge from the reference
mark.
l
Start movement in direction of the negative limit switch if the reference mark
is inactive.
Image 8.49: Positive (right) hardware limit switch and zero pulse
8.5.9.2 Method 5: Start movement in direction of negative (left)
hardware limit switch with zero pulse
l
Start movement in direction of negative (left) hardware limit switch.
l
The direction of movement reverses on an inactive edge from the reference
mark.
MOOG
ID No.: CB40859-001 Date: 11/2020
MSD Servo Drive - Device Help
257
8 Motion profile
l
The first zero pulse after a rising edge from the reference mark is the zero
point/homing point.
Image 8.50: Negative (left) hardware limit switch and zero pulse