Siemens SINUMERIK 828D Function Manual page 199

Value Meaning
xx2 The tolerances specified with MD33100 $MA_COMPRESS_POS_TOL are maintained
for the geometry axes.
The tolerances specified with
- SD42476 $SC_COMPRESS_ORI_TOL
- SD42477 $SC_COMPRESS_ORI_ROT_TOL
are maintained for the axes of orientation motion (TRAORI).
xx3 The tolerances specified with SD42475 $SC_COMPRESS_CONTUR_TOL are
maintained for the geometry axes.
The tolerances specified with
- SD42476 $SC_COMPRESS_ORI_TOL
- SD42477 $SC_COMPRESS_ORI_ROT_TOL
are maintained for the axes of orientation motion (TRAORI).
The tens position in MD20482 is used to set whether blocks with value assignments (e.g. X=100 ...) should be
compressed:
Value Meaning
x0x / x2x Blocks with value assignments are compressed (default setting).
Notice: This behavior is incompatible with earlier releases of the software!
x1x / x3x Blocks with value assignments are not compressed.
This behavior is compatible with earlier releases of the software.
The type of traversing blocks that are compressed is set with the hundreds position of MD20482:
Value Meaning
0xx Circular blocks and G0 blocks are not compressed.
1xx Circular blocks are compressed. Only COMPCAD
2xx G0 blocks are compressed (see "Tolerance and compression of G0 blocks [Page 206]").
3xx Circular blocks and G0 blocks are compressed.
An additional description of MD20482 can be found in:
References:
Function Manual Special Functions; Multi-Axis Transformations (F2),
Chapter: "Compression of the orientation"
Corner limit angle for COMPCAD
A limit angle can be defined for COMPCAD using the following setting data, from which a block transition is
interpreted as corner:
SD42470 $SC_CRIT_SPLINE_ANGLE (corner limit angle for compressor)
Values between 10 and 40 degrees are useful. The recommended setting is 36 degrees.
Note
The corner limit angle for COMPCAD is only used as an approximate measure for corner
detection. By evaluating the plausibility, the compressor can also identify flatter block
transitions as corners and larger angles as outliers.
Basic Functions
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
B1: Continuous­path Mode, Exact Stop, LookAhead
3.5 Compressor functions
199