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8 ZERO POINT RETURN CONTROL
(3) If the "
Pr.51 Zero point return dwell time" elapses before the stop at the
stopper, the workpiece will stop at that position, and that position will be
regarded as the zero point.
Deviation counter clear output
Axis operation status
[RWrn+7, RWrn+15]
Zero point return request flag
[RX(n+1)F, RX(n+4)F]
Zero point return complete flag
[RX(n+2)0, RX(n+5)0]
Md.44 Movement amount
after near-point dog ON
Current feed value
[RWrn+0 to 1, RWrn+8 to 9]
Md.30 Machine feed value
Machine zero point return start
(Positioning start signal)
Pr. 48 Zero point return speed
ON
ON
OFF
OFF
ON
0
V
ON
t
Pr. 49 Creep speed
Torque limit
Near-point dog OFF
Dwell time measurement
Time out of dwell time
Standing by
In zero point return
Inconsistent
Inconsistent
Value the machine moved is stored
Standing by
Zero point address
OFF
Stopper
Valid torque limit range
Fig. 8.5 Operation when the dwell time elapses before the stop at the stopper
(4) Machine zero point returns started while the near-point dog is ON will start at
the "
Pr.49 Creep speed".
(5) If the restart command is turned ON after machine zero point return is stopped
upon a stop signal, an error “zero point return restart not possible” (error code:
209) occurs.