
PROGRAMMING
B–63534EN/02
19. HIGH SPEED CUTTING FUNCTIONS
491
NOTE
1 When the override near the base circle is enabled, the
override for inward offset in cutter compensation is disabled.
These overrides cannot be enabled simultaneously.
2 When the distance from the center of the base circle to the
start point is the same as that from the center of the base
circle to the end point, that is, for a circle, circular
interpolation is used. For this reason, no automatic override
is applied.
3 If there is an end point error, the feedrate is not guaranteed.
4 If there is an end point error, the remaining distance required
for acceleration/deceleration before interpolation may not
be obtained exactly. In this case, alarm 242 occurs.
5 For other restrictions, refer to the operator’s manual.
6 In the AI nano contour control mode, involute interpolation
cannot be specified.
In the following tables, AI control means the AI contour control/AI nano
contour control mode.
(1)Parameters related to linear acceleration/deceleration before
interpolation
Parameter number
Parameter
Normal
Ad-
vanced
preview
control
AI
contour
Acceleration/deceleration type (A or B) FWB/1602#0 None
Parameter 1 for setting the acceleration 1630 1770
Parameter 2 for setting the acceleration 1631 1771
Feedrate at which an overtravel alarm occurs 1784
(2)Parameters related to automatic corner deceleration
Parameter number
Parameter
Normal
Ad-
vanced
preview
control
AI
contour
Method for determining whether to perform
automatic corner deceleration (angle/fee-
drate difference)
CSD/1602#4 None
Lower feedrate limit (control according to the
angle)
1778 1777 None
Angle at which automatic corner deceleration
is performed (control according to the angle)
1740 1779 None
Allowable feedrate difference for all axes
(control according to the feedrate difference)
1780 None
Allowable feedrate difference for each axis
(control according to the feedrate difference)
1783
Acceleration/deceleration type
(Type A/Type B)
FWB/1602#0 None
D Corresponding
parameter numbers in
the normal mode,
advanced preview
control mode, and AI
contour control/AI nano
contour control mode