Siemens SINUMERIK 840D sl Function Manual page 666

K2: Axis Types, Coordinate Systems, Frames
10.1 Brief description
Rotation
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.
Mirroring
The following machine data is used to set how the mirroring is to be performed:
MD10610 $MN_MIRROR_REF_AX
Concatenation
Frames and frame components can be combined using the concatenation operator ":". The
channel-specific active frame $P_ACTFRAME results, for example, from the chaining of all
active frames of the channel:
$P_ACTFRAME =
Supplementary conditions
Incremental dimensioning G91
Incremental programming with G91 is defined such that the offset value is traversed additively
to the incrementally programmed value when a work offset is selected.
The behavior depends on the setting in the setting data:
SD42440 $SC_FRAME_OFFSET_INCR_PROG (work offsets in frames)
Value
1
0
666
$P_PARTFRAME : $P_SETFRAME : $P_EXTFRAME :
$P_ISO1FRAME : $P_ISO2FRAME : $P_ISO3FRAME :
$P_ACTBFRAME : $P_IFRAME : $P_GFRAME :
$P_TOOLFRAME : $P_WPFRAME : $P_TRAFRAME:
$P_PFRAME : $P_ISO4FRAME : $P_CYCFRAME
Meaning
Work offset is applied on FRAME and incremental programming of an axis (= default setting).
Only the programmed path is traversed.
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
Basic Functions