
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
143/190
8490 Minimum travel distance of a block where smooth interpolation is applied
[Data type] 2-word
[Unit of data]
Increment system IS-B IS-C Unit of data
mm input 0.001 0.0001 Mm
inch input 0.0001 0.00001 Inch
[Valid data range] 0 to 99999999
This parameter specifies a block length used as a reference to decide whether to
apply smooth interpolation. If the line specified in a block is shorter than the
value set in the parameter, smooth interpolation will not be applied to that
block.
8491 Maximum tolerance of a block where smooth interpolation is applied
[Data type] Word
[Unit of data]
Increment system IS-B IS-C Unit of data
Mm input 0.001 0.0001 mm
Inch input 0.0001 0.00001 inch
[Valid data range] 0 to 32767
This parameter specifies a tolerance used as a reference to decide whether to
apply smooth interpolation. If the tolerance specified in a block is larger than the
value set in the parameter, smooth interpolation will not be applied to that
block.
8492 Minimum tolerance of a block where smooth interpolation is applied
[Data type] Word
[Unit of data]
Increment system IS-B IS-C Unit of data
Mm input 0.001 0.0001 mm
Inch input 0.0001 0.00001 inch
[Valid data range] 0 to 32767
This parameter specifies a tolerance used as a reference to decide whether to
apply smooth interpolation. If the tolerance specified in a block is smaller than
the value set in the parameter, smooth interpolation will not be applied to that
block.
Please set the value of about 1/10 of the maximum tolerance (parameter
No.8491) usually. When 0 is set, 1/10 of the maximum tolerance (parameter
No.8491) is assumed to be minimum tolerance. When a negative value is set, the
minimum tolerance is assumed to be 0.
The tolerance is a distance of straight line L and curve C which instruction
points are smoothly connected.
instruction points
Line L
Curve C
tolerance