
A-78927E
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FANUC Series 16i –MB,18i –MB5
Inclined Rotary Axis Control
Sep.13.2002
02 Dec.27.2002 T.Horie All revision
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T.Horie H.Kouzai
1.1.1 Restrictions
1.1.1.1 Restrictions for tilted working plane command
(1) Restrictions
- Basic restrictions
The restrictions for incline cutting commands are similar to those for three-
dimensional coordinate conversion.
Following are the restrictions that require special attention.
- Increment system
The same increment system must be used for the basic three axes or parallel axes
used by this function.
- Rapid traverse command
The rapid traverse command must specify linear rapid traverse (parameter LRP
(parameter No.1401#1) = 1).
The accelaration/deceleration type must be set to a time constant type (Parameter
RPT (No.1603#4)=1).
When the tilted working plane command executed in the AI contour control, AI NANO
contour control mode, the accelaration/deceleration must be set to
acceleration/deceleration before interpolation (Parameter AIR (No.7054#1)=1).
When the tilted working plane command executed in the AI high precision contour
control, AI NANO high precision contour control mode, the accelaration/
deceleration must be set to acceleration/deceleration before interpolation (Parameter
FRP (No.19501#5)=1).
- Feature coordinate system and three-dimensional coordinate conversion
An alarm(P/S5456) is raised if an attempt is made to set a feature coordinate system
in another feature coordinate system.
An alarm(P/S5456) is raised also if an attempt is made to set a new coordinate
system by performing three-dimensional coordinate conversion in a coordinate
system.
- Positioning in the machine coordinate system
Positioning commands in the machine coordinate system, such as G28, G30, and
G53, operate in the machine coordinate system rather than the feature coordinate
system. (The movement to the middle point operates in the feature coordinate
system.)