Mitsubishi Electric MELSEC Q Series Programming Manual page 412

6 POSITIONING CONTROL
(d) When it starts in the proximity dog, the zero point is not passed (zero pass
signal: M2406+20n OFF) at the time of the proximity dog is turned OFF
during travel to reverse direction of home position return, it continues to
travel with home position return speed until the zero point is passed. The
zero point is passed again during deceleration by zero point pass, the home
position becomes this side compared with the case to pass zero point at the
time of the proximity dog OFF.
Acceleration time Deceleration time
Home position
V
return direction
2)
Creep speed
3)
Home position
return speed
Proximity dog
6 - 225
1) It travels to preset reverse direction of
home position return with the home
position return speed.
2) After proximity dog OFF, it travels to
zero point and a deceleration stop is
made.
3) After a deceleration stop, it travels to
direction of home position return with
the creep speed, and the home
position return ends with first zero
point after the proximity dog ON.
Home position
1)
Home position
return start
Zero point