CHAPTER 2 MACHINE OPERATIONS
6. Operation Switch Functions and Other Functions
II
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(b) Zero point return command (G29) from the zero point
When a zero point return command (G29) is issued from the zero point, the middle point
becomes the middle point passed through during the previous zero point return command (G28,
G30), unrelated to the current mirror state. The axis moves following the current mirror state
(ON/OFF) for operations after the middle point.
(c) Radius compensation commands (G41, G42) during mirror image
Because the mirror image is processed after the radius compensation (G41, G42) is applied, the
cutting is carried out as follows.
When only radius cinoebsatuib
is applied
Program path
Mirror image
center
When mirror image and radius compensation are applied
When only mirror image is applied
(d) Machine coordinate system selection (G53)
The mirror image is not applied for positioning by a G53 command.
Issue the next movement command in the G90 mode.
(e) Fixed cycle (G76, G87)
The mirror image is not applied to shift operations in the XY direction for G76 and G87
commands.
The mirror image is applied to positioning operations.
(f) Handle
interrupt
When the manual ABS is ON, the handle interrupt amount is reflected on the workpiece
coordinate system counter, and the workpiece coordinate system does not shift. Because of that,
the mirror center also does not shift.
When the manual ABS is OFF, the handle interrupt amount is not reflected on the workpiece
coordinate system counter. The amount is held as an interrupt amount, and the mirror center
shifts.
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