Siemens SINUMERIK 840DE sl Function Manual page 49

Rotational position
The rotational position of the axis on the cylinder peripheral surface perpendicular to the rotary
axis must be defined as follows:
α
β
Figure 2-11
MD24800 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> = ...°
During this, <t> is replaced by the number of TRACYL transformations (<t> can be a maximum
of 2) agreed upon in the transformation datasets.
Direction of rotation
The direction of rotation of the rotary axis is specified by machine data as described in the
following paragraph.
Transformations
Function Manual, 06/2019, A5E47435470B AA
Rotational position of the rotary axis for C=0
Position of Y = 0
Center of axis rotation in the peripheral cylinder surface
M1: Kinematics transformation
2.2 TRACYL cylinder surface transformation (option)
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