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12 CONTROL AUXILIARY FUNCTIONS
(c) Setting the dwell time for a zero point return retry
With the zero point return retry function, the dwell time can be set for reverse
run operation started at detection of the upper/lower limit signal and for a
machine zero point return executed after a stop by near-point dog OFF
when a zero point return retry is made.
"
Pr.58 Dwell time during zero point return retry" is made valid when the
operation stops in position "A" of the following figure. (The dwell times in
positions A and B are the same values.)
Machine zero point return
executed again
Stop by near-point
dog OFF
Stop by limit
signal detection
Reverse run operation
after limit signal detection
B
Zero point
Pr. 46 Zero point return direction
Machine zero point
return start
A
Limit signal OFF
Near-point dog
Zero point signal
Fig. 12.3 Setting the dwell time during a zero point return retry