Siemens SINUMERIK 802D Programming And Operating Manual page 249

Deactivate mirroring
For all axes: MIRROR (without axis parameter)
Note
The mirror command causes the control to automatically change the path compensation
commands (G41/G42 or G42/G41) according to the new machining direction.
The same applies to the direction of circle rotation (G2/G3 or G3/G2).
Note
If you program an additive rotation with AROT after MIRROR, you may have to work with
reversed directions of rotation (positive/negative or negative/positive). Mirrors on the
geometry axes are converted automatically by the control into rotations and, where
appropriate, mirrors on the mirror axis specified in the machine data. This also applies to
settable zero offsets.
Machine manufacturer
● You can set the axis, around which mirroring is performed, via machine data MD.
● MD10612 MIRROR_TOGGLE = 0 can be used to define that the programmed values are
Cylindrical grinding
Programming and Operating Manual, 07/2009, 6FC5398-4CP10-2BA0
MD 10610 = 0: Mirroring is performed in relation to the programmed axis (negation of
values).
MD 10610 = 1 or 2 or 3: Depending on the data setting, mirroring is performed in relation
to a specific reference axis (1=X axis; 2=Y axis; 3=Z axis) and rotations of two other
geometry axes.
always evaluated. A value of 0, i.e., MIRROR X0, deactivates the mirroring of the axis,
and values not equal to 0 cause the axis to be mirrored if it is not already mirrored.
Programming
10.2 Positional data
249