Delta Electronics DVP15MC11T

Appendix D Explanation of Homing Modes
D
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Homing depending on the positive limit switch and Z pulse (: mode 2)
Mode 3 and mode 4 Homing which depends on the home switch and Z pulse
 Mode 3
Circumstance 1： When the home switch is OFF, MC_Home instruction is executed and the axis moves
in the positive direction at the first-phase speed. When the axis encounters that the
home switch is ON, the motion direction changes and the axis moves at the
second-phase speed. Where the first Z pulse is met is the home position when the
home switch is OFF.
Circumstance 2： When the home switch is ON, MC_Home instruction is executed and the axis directly
moves in the negative direction at the second-phase speed. Where the first Z pulse is
met is the home position while the home switch is OFF.
 Mode 4
Circumstance 1： When the home switch is OFF, MC_Home instruction is executed and the axis moves
in the positive direction at the first-phase speed. The axis moves at the second-phase
speed when the axis encounters that the home switch is ON. Where the first Z pulse is
met is the home position.
Circumstance 2： When the home switch is ON, MC_Home instruction is executed and the axis moves
in the negative direction at the second-phase speed. When the axis encounters that
the home switch is OFF, the motion direction changes and the axis moves at the
second-phase speed. Where the first Z pulse is met is the home position.
2
Z pulse
Po sitive limit
switch
2
Circumstance 1
Circumstance 2
Start
point
Start point
Negative
direction
Negative
direction
D-3