Siemens SINUMERIK 840Di Function Manual page 856

Examples
4.3 Frames
Example 2
Channel axes 4, 5 and 6 become the geometry axes of a 5-axis orientation transformation.
The geometry axes are thus all substituted before the transformation.
The current frames are changed when the transformation is activated.
The axial frame components of the channel axes, which become geometry axes, are taken
into account when calculating the new WCS. Rotations programmed before the
transformation are retained. The old WCS is restored when the transformation is
deactivated.
The most common application will be that the geometry axes do not change before and after
the transformation and that the frames are to stay as they were before the transformation.
Machine data:
$MN_FRAME_GEOAX_CHANGE_MODE = 1
$MC_AXCONF_CHANAX_NAME_TAB[0] = "CAX"
$MC_AXCONF_CHANAX_NAME_TAB[1] = "CAY"
$MC_AXCONF_CHANAX_NAME_TAB[2] = "CAZ"
$MC_AXCONF_CHANAX_NAME_TAB[3] = "A"
$MC_AXCONF_CHANAX_NAME_TAB[4] = "B"
$MC_AXCONF_CHANAX_NAME_TAB[5] = "C"
$MC_AXCONF_GEOAX_ASSIGN_TAB[0] = 1
$MC_AXCONF_GEOAX_ASSIGN_TAB[1] = 2
$MC_AXCONF_GEOAX_ASSIGN_TAB[2] = 3
$MC_AXCONF_GEOAX_NAME_TAB[0] = "X"
$MC_AXCONF_GEOAX_NAME_TAB[1]="Y"
$MC_AXCONF_GEOAX_NAME_TAB[2] = "Z"
$MC_TRAFO_GEOAX_ASSIGN_TAB_1[0]=4
$MC_TRAFO_GEOAX_ASSIGN_TAB_1[1]=5
$MC_TRAFO_GEOAX_ASSIGN_TAB_1[2]=6
$MC_TRAFO_AXES_IN_1[0] = 4
$MC_TRAFO_AXES_IN_1[1] = 5
$MC_TRAFO_AXES_IN_1[2] = 6
$MC_TRAFO_AXES_IN_1[3] = 1
$MC_TRAFO_AXES_IN_1[4] = 2
4-6
Axis Types, Coordinate Systems, Frames (K2)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0