8.5.8 Method (3) and (4): Positive reference mark and
zero pulse
8.5.8.1 Method (3): Start movement in direction of positive (right)
hardware limit switch
l
Start movement in direction of positive (right) hardware limit switch; at this
time the reference mark is inactive.
l
The direction of movement reverses on an active edge from the reference
mark.
l
The first zero pulse after a falling edge from the reference mark is the zero
point/homing point.
Image 8.47: Start condition for positive limit switch
8.5.8.2 Method 4: Start movement in direction of negative (left)
hardware limit switch
l
Start movement in direction of negative (left) hardware limit switch; at this
time the reference mark is inactive.
l
The direction of movement reverses on an active edge from the reference
mark.
l
The first zero pulse after a falling edge from the reference mark is the zero
point/homing point.
MOOG
ID No.: CB40859-001 Date: 11/2020
MSD Servo Drive - Device Help
256
8 Motion profile
Image 8.48: Start condition for negative limit switch