
A-78640E
Sheet
Title
Draw
No.
04 Feb.08.’03 Part of (4) is added or modified. Addition of 2.16.5
03 Jul.02.’02 A. Fukumoto Part of (3) is added or modified. T.Endo
02 May.13.’02 A. Fukumoto Addition of Tool Radius control for 5-axis machining etc T.Endo
Ed. Date Design Description
Date Jan.25.’02 Desig. A.Fukumoto Apprv. T.Endo
FANUC Series 16i /18i -TB
Specifications of AI High-Precision Contour Control /
I Nano High-Precision Contour control
166/190
#7 #6 #5 #4 #3 #2 #1 #0
8475 CIR BIP
[Data type] Bit
CIR The function of automatic feedrate control considering acceleration and
deceleration during circular interpolation is:
0: Not used.
1: Used.
When 1 is set, parameter No.8470 for determining the allowable acceleration
must be specified.
BIP The function of deceleration at corners is:
0: Not used.
1: Used. (Always set 1.)
#7 #6 #5 #4 #3 #2 #1 #0
19500 FNW
[Data type] Bit
FNW Specifies whether the method of determining the feedrate based on the feedrate difference in
look-ahead acceleration/deceleration before interpolation and the method of determining the
feedrate based on the acceleration of AI HPCC / AI NANO HPCC.
0: The highest feedrate that does not exceed the allowable feedrate difference or allowable
acceleration for each axis is assumed.
1: In addition to the condition that the feedrate must not exceed the allowable feedrate
difference and allowable acceleration, the condition that the deceleration feedrate must
be constant if the geometry is the same must be satisfied in determining the feedrate.
When this parameter is set to 1, the feedrate determined with the feedrate
difference or acceleration may be lower by up to 30% than that determined when
it is set to 0.
8410
Allowable velocity difference in velocity determination considering the
velocity difference at corners
[Data type] Word axis
[Unit of data, Valid data range]
Valid data range
Increment system Unit of data
IS-B IS-C
Millimeter machine 1 mm/min
10
∼60000 1∼6000
Inch machine 0.1 inch/min
10
∼60000 1∼6000
Rotation axis 1 deg/min
10
∼60000 1∼6000
If zero is specified for all axes, the machine does not decelerate at corners.
When the function for determining the velocity considering the velocity
difference at corners is used, the system calculates the feedrate whereby a
change in the velocity element of each axis does not exceed this parameter value
at the interface between blocks. Then the machine decelerates using
acceleration/ deceleration before interpolation.