Siemens SINUMERIK 840D sl Function Manual page 515

Grooves without groove wall offset
For transformation type 514 the following indices apply for $MC_TRAFO_AXES_IN_n[ ].
Meaning of indices in relation to base coordinate system (BCS):
● [0]: Cartesian axis radial to rotary axis (if configured)
● [1]: Axis in generated cylinder surface perpendicular to rotary axis
● [2]: Cartesian axis parallel to rotary axis
● [3]: Linear axis parallel to index 2 in initial position of machine
Meaning of indices in relation to machine coordinate system (MCS):
● [0]: Linear axis radial to rotary axis (if configured)
● [1]: Rotary axis
● [2]: Linear axis parallel to rotary axis
● [3]: Linear axis perpendicular to the axes of indices [0] and [1]
Rotational position
The rotational position of the axis on the cylinder peripheral surface perpendicular to the
rotary axis must be defined as follows:
Figure 7-14
TRACYL_ROT_AX_OFFSET_t
The rotational position of the peripheral surface in relation to the defined zero position of the
rotary axis is specified with:
MD24800 $MC_TRACYL_ROT_AX_OFFSET_t=...°
In this case, "t" is substituted by the number of the TRACYL transformations declared in the
transformation data blocks (t may not be greater than 2).
Direction of rotation
The direction of rotation of the rotary axis is specified by machine data as described in the
following paragraph.
Extended Functions
Function Manual, 01/2008, 6FC5397-1BP10-3BA0
Center of rotation of axis in the peripheral cylinder surface
Kinematic Transformation (M1)
7.3 TRACYL
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