Siemens SINUMERIK 840D sl Function Manual page 796

Brief description
1.3 Frames
Rough and fine offsets
The translation component of FRAMES comprises:
• Rough offset with TRANS, ATRANS and CTRANS
• Fine offset with CFINE
G58, G59
G58 and G59 can be programmed to replace the rough and fine offsets of the programmable
frame on an axial basis. These functions can only be used when the fine offset is configured.
• Rough offset with G58
• Fine offset with G59
Frame rotations
Orientations in space are defined via frame rotations as follows:
• Rotation with ROT defines the individual rotations for all geometry axes.
• Solid angles with ROTS, AROTS, CROTS define the orientation of a plane in space.
• Frame rotation with TOFRAME defines a frame with a Z axis pointing in the tool direction.
Scaling
SCALE is used to program the programmable scale factors for all geometry axes and special
axes.
If a new scaling is to be based on a previous scaling, rotation, translation or mirroring, then
ASCALE must be programmed.
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The rough offset is normally specified by the machine setter.
The programmable offsets for all geometry axes and special axes are specified with
TRANS.
This can be defined by the machine operator, within certain input limits.
G58 changes only the absolute translation component (rough offset) for the specified
axis; the total of additively programmed translations (fine offset) is retained.
G59 is used for axial overwriting of the additively programmed translations for the
specified axes that were programmed with ATRANS.
Basic logic functions: Axes, coordinate systems, frames (K2)
Function Manual, 11/2006, 6FC5397-0BP10-2BA0