Siemens SINUMERIK 828D Function Manual page 762

K2: Axis Types, Coordinate Systems, Frames
10.5 Frames
The machine data below can be used to take the axial complete frame of the TRACYL rotary axis, i.e., the
translation, fine offset, mirroring and scaling, into account in the transformation:
MD24805 $MC_TRACYL_ROT_AX_FRAME_1 = 1
MD24855 $MC_TRACYL_ROT_AX_FRAME_2 = 1
A rotary axis offset can, for example, be entered by compensating the oblique position of a workpiece in a frame
within a frame chain. As a rule, this offset can also be included in the transformation as an offset in the rotary axis
or as a y offset. A c axis offset, as in the figure above, then leads to corresponding x and y values.
MD24805 $MC_TRACYL_ROT_AX_FRAME_1 = 2
MD24855 $MC_TRACYL_ROT_AX_FRAME_2 = 2
With this setting, the axial offset of the rotary axis is taken account of in the transformation up to the SZS. The
axial offsets of the rotary axis included in the SZS frames are entered into the transformation frame as offsets on
the peripheral surface. This setting is only effective if the transformation frame has been configured.
Frame expansions:
The expansions described below are only valid for the following machine data settings:
MD10602 $MN_FRAME_GEOAX_CHANGE_MODE = 1
MD10602 $MN_FRAME_GEOAX_CHANGE_MODE = 2
The selection of transformation TRACYL produces a virtual geometry axis on the peripheral surface, coupled via
the rotary axis, which is only taken into account in the contour frame but does not have a reference to an axial
frame. All components of the virtual geometry axis are deleted. All other geometry axes accept their axial
components when the transformation is selected.
Translations:
When selecting TRACYL, translations of the virtual axis are deleted. Translations of the rotary axis can be taken
into account in the transformation.
Rotations:
Rotation before the transformation is taken over.
Mirroring:
Mirroring of the virtual axis is deleted. Mirroring of the rotary axis can be taken into account in the transformation.
Scaling:
Scaling of the virtual axis is deleted. Scaling of the rotary axis can be taken into account in the transformation.
Example:
Machine data for TRACYL:
; FRAME configurations
$MC_MM_SYSTEM_FRAME_MASK = 'H41'
$MC_CHSFRAME_RESET_MASK = 'H41'
$MC_CHSFRAME_POWERON_MASK = 'H41'
$MN_FRAME_GEOAX_CHANGE_MODE = 1
762
; TRAFRAME, SETFRAME
; Frames are active after Reset.
; Frames are deleted for Power On.
; Frames are calculated after switchover
of the geo axis.
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
Basic Functions