
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
77/190
When all the following conditions are satisfied, an alarm (P/S41) Issued.
(1) The tool direction vector changes remarkably.
α : Angle for determination set in parameter No.19633 (The default is 45°.)
(Va,Vb)
≤ cos(α)(Here, (Va,Vb) means an inner product.)
(2) The difference between the directions of the compensation vectors to be
generated is small.
Wa : Direction of a compensation vector to be generated by the AB block.
Wb : Direction of a compensation vector to be generated by the BC
block.
Wa = Va
× Ua
Wb = Vb
× Ub
(Wa,Wb)
≥ 0
(3) The path angle difference on the compensation plane is large.
(Ra,Rb) < 0