Mitsubishi Electric MELSERVO-J4 Series Instruction Manual page 158

■Method 23 and Method 27 (Homing without index pulse)
The following figure shows the operation of Homing method 23. The operation direction of Homing method 27 is opposite to
that of Homing method 23.
Statusword bit 10
Target reached
Statusword bit 12
Homing attained
Forward
rotation
Servo motor speed
Reverse
rotation
DOG (Proximity dog)
Controlword bit 4
Homing operation start
• When a home position return is started from the proximity dog
Servo motor speed 0 r/min
Reverse
rotation
After retracting to before proximity dog,
the home position return starts from here.
• When the movement is returned at the stroke end
Forward
rotation
Servo motor speed
0 r/min
Reverse
rotation
The home position return starts from here.
*1 This is not available with the software limit.
4 STARTUP
156
4.6 Home position return mode
ON
OFF
ON
OFF
Acceleration time
constant
Home position return position data
0 r/min
3 ms or shorter
ON
OFF
ON
OFF
Home position
return direction
Proximity dog
Home position
return direction
Proximity dog
Home position return start position
Home position
Deceleration time constant
return speed
Creep speed
Home position return start position
Travel distance after proximity dog
+
Home position shift distance
Proximity dog
*1
Stroke end