Fig. 8.46: Positive limit switch and zero pulse
MOOG
ID
 No.: CB40859-001 Date: 02/2018
MSD Servo Drive- Device Help 
195
8 Motion profile
8.5.8Methods(3)and(4):Positivereferencemarkand
zeropulse
8.5.8.1Method3:Startmovementindirectionofpositive(right)
hardwarelimitswitch
 Startmovementindirectionofpositive(right)hardwarelimitswitch;atthis
timethereferencemarkisinactive.
 Thedirectionofmovementreversesonanactiveedgefromthereference
mark.
 Thefirstzeropulseafterafallingedgefromthereferencemarkisthezero
point/homingpoint.
Fig. 8.47: Start condition for positive limit switch
8.5.8.2Method4:Startmovementindirectionofnegative(left)
hardwarelimitswitch
 Startmovementindirectionofnegative(left)hardwarelimitswitch;atthis
timethereferencemarkisinactive.
 Thedirectionofmovementreversesonanactiveedgefromthereference
mark.
 Thefirstzeropulseafterafallingedgefromthereferencemarkisthezero
point/homingpoint.