Siemens SINUMERIK 840D sl Function Manual page 744

K2: Axis Types, Coordinate Systems, Frames
10.5 Frames
TRANSMIT
Transmit expansions:
The machine data below can be used to take the axial complete frame of the TRANSMIT rotary
axis, i.e., the translation, fine offset, mirroring and scaling, into account in the transformation:
MD24905 $MC_TRANSMIT_ROT_AX_FRAME_1 = 1
MD24955 $MC_TRANSMIT_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. A c axis offset, as in the figure above, then leads
to corresponding x and y values.
MD24905 $MC_TRANSMIT_ROT_AX_FRAME_1 = 2
MD24955 $MC_TRANSMIT_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 rotation. 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 TRANSMIT produces a virtual geometry axis, coupled by way
of the rotary axis, which is merely included in the contour frame but does not have a reference
to an axial frame. The geometric value results from the rotation of a rotary axis. All other
geometry axes accept their axial components when the transformation is selected.
Translations:
744
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
Basic Functions