12. DISPLAY/SET/EDIT
B–64113EN–1/01
874
The parameter value specified on the machine parameter tuning screen is
reflected on the following parameters (common to all modes):
No. 13622: Velocity–first parameter
No. 13623: Precision–first parameter
In addition, the following parameter is set up according to the precision
level (common to all modes):
No. 1769: Post–interpolation linear cutting feed acceleration/
deceleration or post–interpolation bell–shaped cutting feed
acceleration/deceleration (specific to each axis)
NOTE
If this parameter is 0 for all axes, parameter No. 1768
(post–interpolation linear acceleration/deceleration time
constant common to all axes) is enabled.
This item is used to specify an allowable feedrate difference for corner
feedrate difference–based velocity determination.
If it is anticipated that this setting may be exceeded by the velocity
component of an axis at a block boundary, a feedrate that can prevent the
setting from being exceeded is obtained and the axis is decelerated to the
feedrate, using pre–interpolation acceleration/deceleration.
Increment Unit of
Valid data range
system
data
IS-B IS-C
AI contour control
Millimeter
machine
1 mm/min 6 to 15000 6 to 12000
Rotaion axis 1 deg/min 6 to 15000 6 to 12000
Size: Word axis type
The parameter value specified on the machining parameter tuning screen
is reflected on the following parameters:
(APC control/AI contour control/AI APC)
No. 13624: Velocity–first parameter
No. 13625: Precision–first parameter
In addition, the following parameter is set up according to the precision
level:
(APC control/AI contour control/AI APC)
No. 1788: Allowable individual–axis feedrate difference for feedrate
difference–based automatic deceleration at corner
NOTE
1 This setting item is axis–specific. The item for an axis is not
interlocked with that for any other axis. So it is necessary
to set up the item for all axes individually.
2 If this item is specified as 0 for all axes, no deceleration is
performed at corners.
3 If this parameter is 0 for all axes, parameter No. 1780
(feedrate difference–based allowable feedrate difference of
the automatic deceleration at corners common to all axes)
is valid for APC.
D Corner feedrate
difference
[Unit of data]
[Valid data range]