MITSUBISHI ELECTRIC MR-J2S- CL - Manual (Page 115)

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4. OPERATION
(2) Home position return parameter
When performing home position return, set parameter No.8 as follows:
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: Dog is detected when DOG is turned off.
1: Dog is detected when DOG is turned on.
0
Parameter No. 8
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 (DOG) is turned off, or "1" to detect the dog when the device is turned 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.