Siemens SINUMERIK 840D sl Function Manual page 543

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The rotary axis cannot be programmed because it is occupied by a geometry axis and

cannot thus be programmed directly as a channel axis.

An offset of the rotary axis CM can be entered, for example, by compensating the inclined

position of a workpiece in a frame within the frame chain. The x and y values are then as

illustrated in the following diagram.

This offset can also be included in the transformation as an offset in the rotary axis or as y-

offset. To ensure that the total axial frame of the TRACYL rotary axis, i.e. the translation, fine

offset, mirroring and scaling, is included in the transformation, the following settings must be

MD24805 $MC_TRACYL_ROT_AX_FRAME_1 = 1

MD24855 $MC_TRACYL_ROT_AX_FRAME_2 = 1

Changes in the axis assignments are converted every time the transformation is selected or

deselected. For further information about axial offsets for rotary axes to the SZS as an offset

on the peripheral surface, please see:

/FB1/ Function Manual Basic Functions; Coordinate Systems, Frames (K2)

Axis utilization

● in the generated cylinder surface perpendicular to the rotary axis (Y) and

● additional axis (YC)

may not be used as a positioning or oscillation axis.

Extended Functions

Function Manual, 03/2009, 6FC5397-1BP10-4BA0

Rotary axis offset with TRACYL

Kinematic Transformation (M1)

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Sinumerik 840de sl