Appendix D Explanation of Homing Modes
D
Homing depending on the home switch, positive limit switch and Z pulse (
: mode 8)
Mode 9
Circumstance 1: MC_Home instruction is executed and the axis moves in the positive direction at the
first-phase speed when the home switch is OFF. The axis moves at the second-phase
speed when the home switch is ON. The motion direction changes and the axis
moves at the second-phase speed when the home switch is OFF. And 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 positive direction at the second-phase speed. The motion direction changes and
the axis moves at the second-phase speed when the home switch is OFF. And where
the first Z pulse is met is the home position.
Circumstance 3: MC_Home instruction is executed and the axis moves in the positive direction at the
first-phase speed when the home switch is OFF. The motion direction changes and
the axis moves at the first-phase speed when the home switch is OFF and the positive
limit switch is ON. The axis moves at the second-phase speed and where the first Z
pulse is met is the home position when the home switch is ON.
Z pulse
Home switch
Positive limit switch
8
8
8
Circumstance 1
Circumstance 2
Circumstance 3
Start
point
Start point
Start
point
Positive direction
Positive direction
Positive direction
D-7