Siemens SINUMERIK 808D ADVANCED - Page 119

Parameter Manual
Operating Instructions, 08/2013, 6FC5397-8EP40-0BA0
119
Machine data
2.3 Channel-specific machine data
Description: The machine data defines the maximum traversing length of a block that can be
compressed. Longer blocks interrupt the compression and are traversed in the
normal way.
Related to:
MD33100 $MA_COMPRESS_POS_TOL (maximum deviation with compression)
References:
/PA/, Programming Guide: Fundamentals
Description: The value indicates the maximum permissible deviation for the compression for
the path feedrate. The larger the value, the more short blocks can be com-
pressed into one long block. The maximum number of compressible blocks is
limited by the size of the spline buffer.
In this way, the the compressors COMPON and COMPCURV may limit the compres-
sion of the path axes.
Compressor COMPCAD acts differently: It ignores changes to the F word as long
as they lie below the threshold defined by COMPRESS_VELO_TOL. If the feed
programmed in a block changes more than COMPRESS_VELO_TOL, COMPCAD interrupts
the compression at this block transition so that the feed change takes place
at exactly the desired position.
Related to:
MD33100 $MA_COMPRESS_POS_TOL[AXn]
MD20170 $MC_COMPRESS_BLOCK_PATH_LIMIT
References:
/PGA/, Programming Guide, Advanced
20170 COMPRESS_BLOCK_PATH_LIMIT C09 B1
mm Maximum traversing distance of an NC block with compression DOUBLE NEW CONF
-
808d-me42 - 1.0, 1.0, 1.0, 1.0, 1.0,
1.0, 1.0, 1.0...
0.0 - 1/1
808d-me62 - 20.0 0.0 - 1/1
808d-te42 - 1.0, 1.0, 1.0, 1.0, 1.0,
1.0, 1.0, 1.0...
0.0 - 1/1
808d-te62 - 1.0, 1.0, 1.0, 1.0, 1.0,
1.0, 1.0, 1.0...
0.0 - 1/1
20172 COMPRESS_VELO_TOL C09 B1,V1
mm/min Max. permissible deviation of path feedrate with compression DOUBLE PowerOn
-
808d-me42 - 60000.0, 60000.0,
60000.0, 60000.0...
0.0 - 1/1
808d-me62 - 1000.0 0.0 - 1/1
808d-te42 - 60000.0, 60000.0,
60000.0, 60000.0...
0.0 - 0/0
808d-te62 - 60000.0, 60000.0,
60000.0, 60000.0...
0.0 - 0/0
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