
B–62073E–1/042. INTERFACE BETWEEN CNC AND PMC–NA OR NB
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[Using this function when reference position return is performed in the positive direction]
Deceleration dog
Machine zero point
Grid point →
The direction in which a software
deceleration dog is added
Positive
direction
[Using this function when reference position return is performed in the negative direction]
Deceleration dog
Machine zero point
Grid point →
The direction in which a software
deceleration dog is added
Negative
direction
NOTE 5 The distance ((1) in the following figure) from the position where the deceleration dog is
released to the reference position where a stop takes place is indicated in item No. 3008 on
the diagnosis screen. When a sof tware deceleration dog is set, the distance ((2) in the figure)
from the position where the software deceleration dog is released to the reference position
where a stop takes place is indicated.
Deceleration dog
Machine zero point
Grid point →
Software deceleration dog
(2)
(1)
(1) Automatic reference position setting signals RAST1, RAST2, RAST3, etc.
[Classification]
Input signals
[Function] When reference position return is performed, these signals automatically set the software de-
celeration dog value and grid shift to match the grid position where reference position return
stops with the machine ze ro point.
A number appended to a signal name represents a controlled axis number.
RAST1
1 ……Automatic reference position setting signal for the first axis
2 ……Automatic reference position setting signal for the second axis
3 ……Automatic reference position setting signal for the third axis
:
:
:
:
[Operation] When an automatic reference position setting signal is high, manual operation (continuous
manual feed or manual handle feed operation using the manual pulse generator) from the grid
point where a stop occurred t o the machine zero point can be performed to determine the
distance between these points automatically. When the signal goes low from high, the soft-
ware deceleration dog value and grid shift are set automatically.