Siemens SINUMERIK 840DE sl Function Manual page 196

F2: Multi-axis transformations
3.9 Orientation
xx2x Blocks with value assignments are compressed.
xx3x Blocks with programmed tool orientation and / or value assignments are not compressed.
x0xx Circular blocks and G0 blocks are not compressed.
x1xx Circular blocks are linearized and compressed by COMPCAD.
x2xx G0 blocks
x3xx Circular blocks and G0 blocks
0xxx Optimization regarding the surface quality in tool and mold making.
1xxx Optimization regarding smooth and quick traversal.
1) Another tolerance can be specified for compression with MD20560 $MC_G0_TOLERANCE_FAC‐
TOR or NC command STOLF.
Programming
Tool orientation
If orientation transformation (TRAORI) is active, for 5-axis machines, tool orientation can be
programmed in the following way (independent of the kinematics):
● Programming of the direction vector via:
A3=<...> B3=<...> C3=<...>
● Programming of the Eulerangles or RPY-angles via:
A2=<...> B2=<...> C2=<...>
Rotation of the tool
For 6-axis machines you can program the tool rotation in addition to the tool orientation.
The angle of rotation is programmed with:
THETA=<...>
Note
NC blocks, in which rotation is also programmed, can only be compressed if the angle of
rotation changes linearly. I.e., an angle of rotation must not be programmed with a polynomial
PO[THT]=(...).
General structure of a compressible NC block
The general structure of an NC block that can be compressed can therefore look like this:
N... X=<...> Y=<...> Z=<...> A3=<...> B3=<...> C3=<...> THETA=<...> F=<...>
or
N... X=<...> Y=<...> Z=<...> A2=<...> B2=<...> C2=<...> THETA=<...> F=<...>
196
Blocks with programmed tool orientation are not compressed.
(Compression of blocks, except linear blocks (G1))
are compressed.
1)
(Compression for specific applications)
Relevant for applications such as, for example, tape laying.
Hundreds digit
are compressed.
1)
Thousands digit
Function Manual, 06/2019, A5E47435470B AA
Transformations