Siemens SINUMERIK 840D sl Function Manual page 532

M1: Kinematic transformation
7.3 TRACYL (option)
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.
TRACYL_ROT_SIGN_IS_PLUS_t
If the direction of rotation of the rotary axis on the x-y plane is counter-clockwise when
viewed against the z axis, then the machine data must be set to TRUE, otherwise to FALSE.
MD24810 $MC_TRACYL_ROT_SIGN_IS_PLUS_t=TRUE
In this case, "t" is substituted by the number of the TRACYLtransformations declared in the
transformation data blocks (t may not be greater than 2).
532
Center of rotation of axis in the peripheral cylinder surface
Function Manual, 09/2009, 6FC5397-1BP20-0BA0
Extended Functions