
B-63943EN-1/02 1.AXIS CONTROL
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1.2.7 Mirror Image
Overview
Mirror image can be applied to each axis, either by signals or by
parameters (setting input is acceptable). All movement directions are
reversed during automatic operation along axes to which a mirror
image is applied.
Z
0
A
When MI1 signal turned to "1" at point A
B
B’f
Mirror image (Example for lathe system)
However, the following directions are not reversed:
- Direction of manual operation and direction of movement, from
the intermediate position to the reference position during
automatic reference position return (for the machining center
system and lathe system)
- shift direction for boring cycles (G76 and G87) (for machining
center system only)
Mirror image check signals indicate whether mirror image is applied
to each axis. System variable #3007 contains the same information
(refer to the User's manual).
Signal
Mirror image signals MI1 to MI8<Gn106>
[Classification] Input signal
[Function] Apply mirror image to the specified axes.
[Operation] Apply mirror image to those axes for which the signals are 1.
These signals are provided for the controlled axes on a one-to-one
basis. A number appended to a signal represents the controlled axis
number.
MIx
x : 1 ..... Applies mirror image to the 1st axis.
2 ..... Applies mirror image to the 2nd axis.
3 ..... Applies mirror image to the 3rd axis.
: :
: :
The mirror image signal can be turned to "1" in the following cases:
(1) During offset cancel;
(2) When the CNC is in the automatic operation stop state and not in
the feed hold state.