Mitsubishi melservo-j2 series Instruction Manual page 93

4. OPERATION
(2) Zeroing parameter
When performing zeroing, set parameter No.8 as follows:
0
Zeroing method························································1)
0: Dog type zeroing (dog rear end detection)
1: Count type zeroing (dog front end detection)
2: Data setting type zeroing
3: Stopper type zeroing
4: Zero ignorance (SON position as zero)
Zeroing direction ······················································2)
0: Address increment direction
1: Address decrement direction
Proximity dog input polarity ·····································3)
0: Dog is detected when DOG-SG are opened.
1: Dog is detected when DOG-SG are shorted.
1) Choose the zeroing method.
2) Choose the starting direction of zeroing. Set "0" to start zeroing in the direction in which the
address is incremented from the current position, or "1" to start zeroing 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 (across DOG-SG) is opened, or "1" to detect the dog when the device is shorted.
(3) Instructions
1) Before starting zeroing, always make sure that the limit switch operates.
2) Confirm the zeroing 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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