Siemens SINUMERIK 840D sl Function Manual page 35

Axis assignment
The axis assignment at the start of the 5-axis transformation defines the axis that will be
mapped by the transformation internally onto a channel axis. Thus, the following is defined in
the machine data below:
MD24110 $MC_TRAFO_AXES_IN_1 (Axis assignment for transformation 1)
...
MD24482 $MC_TRAFO_AXES_IN_10 (Axis assignment for transformation 10)
Geometry information
Information concerning machine geometry is required so that the 5-axis transformation can
calculate axis values: This information is stored in the machine data (in this case, for the first
transformation in the channel):
MD24500 $MC_TRAFO5_PART_OFFSET_1 (workpiece-oriented offset)
• for machine type 1 (two-axis swivel head)
Vector from machine reference point to table zero point (zero vector)
• for machine type 2 (two-axis rotary table)
Vector from last table swivel joint to zero point of table
Figure 1-6
• for machine type 3 (single-axis swivel head and single-axis rotary table)
Vector from joint of table to zero point of table
MD24560 $MC_TRAFO5_JOINT_OFFSET_1 (vector of the kinematic offset of 5-axis
transformation 1)
Vector from the first to the second swivel joint (machine type 1 and 2)
Vector from machine zero point to the swivel joint of the table (machine type 3)
MD24510 $MC_TRAFO5_ROT_AX_OFFSET_1 (position offset of rotary axes 1/2/3 5-axis
transformation 1) angle offset of the first or second rotary axis
Special Functions
Function Manual, 09/2011, 6FC5397-2BP40-2BA0
Machine data MD24500 $MC_TRAFO5_PART_OFFSET_1 for machine type 2
F2: Multi-axis transformations
1.2 5-axis transformation
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