Siemens SINUMERIK 840DE sl Function Manual page 152

F2: Multi-axis transformations
3.2 5-axis transformation
①
Machine zero
②
Zero point tool table
mo Position vector in MCS
po $MC_TRAFO5_PART_OFFSET_<x>[0 ..2]
x Vector of programmed position in BCS
t Tool correction vector
to $MC_TRAFO5_BASE_TOOL_<x>[0 .. 2]
jo $MC_TRAFO5_JOINT_OFFSET_<x>[0 .. 2]
Figure 3-9 Schematic diagram of AC kinematics, moved tool, moved workpiece, moved tool
Sign handling for rotary axes
The sign handling of rotary axes involved in 5-axis transformation is set in the channel using
machine data:
$MC_TRAFO5_ROT_SIGN_IS_PLUS_<x>[ <n> ] = <value>
where x = 1, 2, ... maximum number of transformations in the channel
<n>
0
1
2
<Val‐
ue>
TRUE The sign is not inverted. The traversing direction is as defined in MD32100 $MA_AX_MO‐
FALS
E
152
Meaning
1st rotary axis
2nd rotary axis
3rd rotary axis
Meaning
TION_DIR.
The sign is inverted.
Function Manual, 06/2019, A5E47435470B AA
Transformations