Siemens SINUMERIK 840D sl Function Manual page 879

TRACYL
Tracyl expansions:
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 sheath surface. This setting is only effective if
the transformation frame has been configured.
Frame expansions:
The expansions described below are only valid for the machine data
MD10602 $MN_FRAME_GEOAX_CHANGE_MODE = 1
MD10602 $MN_FRAME_GEOAX_CHANGE_MODE = 2
The selection of transformation TRANSMIT produces a virtual geometry axis on the sheath
surface, 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. All components of the virtual geometry axis are
deleted. All other geometry axes accept their axial components when the transformation is
selected.
Basic logic functions: Axes, coordinate systems, frames (K2)
Function Manual, 11/2006, 6FC5397-0BP10-2BA0
Detailed description
2.4 Frames
95