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

14.COMPENSATION FUNCTION PROGRAMMING B-63324EN/03
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Limitation
- Rotation axis specification
A rotation axis must not be specified in specified-direction tool length
compensation mode. Otherwise, an alarm (PS0809) is issued.
- Commands related to reference position return
The specified-direction tool length compensation mode must be
cancelled before any of the following can be specified :
- Reference position return check (G27)
- Return to reference position (G28)
- Return to 2nd reference position (G30)
- Return from reference position (G29)
- Coordinate system rotation, scaling
In specified-direction tool length compensation mode, coordinate
system rotation and scaling are applied to the tool tip position.
- Three-dimensional coordinate conversion
When specified-direction tool length compensation is used during
three-dimensional coordinate conversion, three-dimensional
coordinate conversion is applied to the tool axis directions (I, J, K) as
well.
- Relationships with other compensation functions
(1) Tool length compensation
Tool length compensation is applied to a path resulting from
specified-direction tool length compensation.
(2) Tool offset
The tool offset function cannot be used in specified-direction tool
length compensation mode.
(3) Cutter compensation
If all of I, J, and K are specified in a G41 block, the specified-
direction tool length compensation mode is set. If any one of I, J,
or K is omitted, cutter compensation mode is set. This means that
both modes cannot be set at the same time.
(4) Tool axis direction tool length compensation
In specified-direction tool length compensation mode, tool axis
direction tool length compensation cannot be used.

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