8.5.7 Method (1) and Method (2): limit switch and zero
pulse
8.5.7.1 Method 1: Negative limit switch and zero pulse
l
Start movement left; at this time the hardware limit switch is inactive.
l
The direction of movement reverses on an active hardware limit switch edge.
l
First zero pulse after falling limit switch edge corresponds to zero/reference
point.
Image 8.45: Negative limit switch and zero pulse
8.5.7.2 Method 2: Positive limit switch and zero pulse
l
Start movement right; at this time the hardware limit switch is inactive.
l
The direction of movement reverses on an active hardware limit switch edge.
l
First zero pulse after falling limit switch edge corresponds to zero/reference
point.
MOOG
ID No.: CB40859-001 Date: 11/2020
MSD Servo Drive - Device Help
255
8 Motion profile
Image 8.46: Positive limit switch and zero pulse