Specifications

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OPR retry
(a) This function retries the machine OPR with the upper/lower limit switches during
the machine OPR.
This allows the machine OPR to be carried out even if the axis is not returned to
before the zeroing dog with JOG operation, etc.
(b) When the OPR retry function is validated and the machine OPR is started, the
axis will move in the OPR direction. If the upper/lower limit signal turns OFF before
the near-point dog signal ON is detected, the axis will decelerate to a stop, and
then will move in the direction opposite to the specified OPR direction.
If the falling edge of the near-point dog signal is detected during movement in the
opposite direction, the axis will decelerate to a stop, and will carry out the OPR
again.
(6)
(1)
(2)
(3)
(4)
(5)
Zero signal
Near-point dog
ON
Limit switch OFF state
Start position
[Operation for OPR retry function]
(1) Movement in the OPR direction starts with the machine OPR start.
(2) The axis decelerates to a stop when the limit switch is detected.
(3) After stopping, the axis moves at the OPR speed in the direction opposite to the specified OPR
direction.
(4) The axis decelerates to a stop when the near-point dog turns OFF.
(5) After stopping, carries out OPR in the OPR direction.
(6) The axis moves to the OP at creep speed.
Figure 4.9 Retry OPR with limit switch