Mitsubishi Electric MELSERVO-J2-Super Series Instruction Manual page 159

5. OPERATION
(2) Home position return parameter
When performing home position return, set parameter No.8 as follows:
Parameter No. 8
0
Home position return method························································1)
0: Dog type
1: Count type
2: Data setting type
3: Stopper type
4: Home position ignorance (Servo-on position as home position)
5: Dog type rear end reference
6: Count type front end reference
7: Dog cradle type
Home position return direction ······················································2)
0: Address increment direction
1: Address decrement direction
Proximity dog input polarity ·····································3)
0: OFF indicates detection of the dog.
1: ON indicates detection of the dog.
1) Choose the home position return method.
2) Choose the starting direction of home position return. Set "0" to start home position return in the
direction in which the address is incremented from the current position, or "1" to start home
position return in the direction in which the address is decremented.
3) Choose the polarity at which the proximity dog is detected. Set "0" to detect the dog when the
proximity dog device (RYn3) is OFF, or "1" to detect the dog when the device is ON.
(3) Instructions
1) Before starting home position return, always make sure that the limit switch operates.
2) Confirm the home position return direction. Incorrect setting will cause the machine to run
reversely.
3) Confirm the proximity dog input polarity. Otherwise, misoperation can occur.
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