Fanuc Series 15i/150i-MA (Programming) Operators Manual

B-63324EN/03 PROGRAMMING 13.FUNCTIONS TO SIMPLIFY PROGRAMMING
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Limitation
- Increment system
NOTE
The same increment system must be used for all of
the three basic axes used for three-dimensional
coordinate conversion.
- Rapid traverse command
NOTE
Set bit 4 (LRP) of parameter No. 1400 to 1 to specify
linear rapid traverse.
- Positioning in the machine coordinate system
Three-dimensional coordinate conversion does not affect positioning
in the machine coordinate system (e.g. specified with G28, G30, or
G53).
- Block with G68 or G69
In a block with G68 or G69, other G codes must not be specified. G68
must be specified with I, J, and K.
- Mirror image
External mirror image (performed by DI or setting) is applied to
movement after three-dimensional coordinate conversion on each
controlled axis.
- Three-dimensional coordinate conversion and other continuous-state
commands
G41, G42, and G40 (cutter compensation), G43 and G49 (tool length
offset), G51.1 and G50.1 (programmable mirror image), and canned
cycle commands must be nested between G68 and G69. Specify G68
with these modes turned off, turn these modes on and back off, then
specify G69.
To specify G41, G42, and G40 (cutter compensation), G51.1 and G50.1
(programmable mirror image), and canned cycle commands during
three-dimensional coordinate conversion, perform programming using
either of the following methods:
1) Before starting three-dimensional coordinate conversion, specify
absolute commands for axes subjected to three-dimensional
coordinate conversion. Then, start three-dimensional coordinate
conversion.
Example) G90 X100.0 Y200.0 Z300.0 ;
G68 X50.0 Y100.0 Z150.0 I0.0 J0.0 K1.0 R60.0 ;
2) During three-dimensional coordinate conversion, specify absolute
commands for axes subjected to three-dimensional coordinate
conversion after these modes are turned off. Then, specify G69.

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