Mitsubishi Electric MELSERVO-J4 Instruction Manual page 248

6. HOW TO USE INDEXER
(2) Parameters for home position return
To perform the home position return, set each parameter as follows.
(a) Select the home position return type with [Pr. PT04 Home position return type].
(b) Select the starting direction for the home position return with [Pr. PT04 Home position return type].
Setting "0" starts the home position return in the address increasing direction from the current
position. Setting "1" starts the home position return in the address decreasing direction from the
current position.
(c) Select the polarity where the external limit is detected with the SIG polarity selection of [Pr. PT29
Function selection T-3].
Setting "0" is for detection with normally open contact and setting "1" is for detection with normally
closed contact.
[Pr. PT04]
0 0 0
Home position return method
0: Torque limit changing dog type
1: Not for indexer method
2: Torque limit changing data set type
3:
4:
5:
6:
Not for indexer method
7:
8:
9:
A:
[Pr. PT04]
0 0 0
Home position return direction
0: Address increasing direction
1: Address decreasing direction
[Pr. PT29]
0 0 0
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SIG (External limit/Rotation direction decision/
Automatic speed selection) polarity selection
0: Normally open contact
1: Normally closed contact