Siemens Sinumerik 840D sl Programming Manual page 260

Special Motion Commands
4.4 NC block compression (COMPON, COMPCURV, COMPCAD, COMPOF)
Meaning
COMPON:
COMPCURV:
COMPCAD:
COMPOF :
Note
The rounding function G642 and jerk limitation SOFT can be used to achieve further
improvements in surface quality. These commands must be written at the beginning of the
program.
General conditions
• The NC block compression is generally executed for linear blocks (G1).
• Only blocks that comply with a simple syntax are compressed:
N... G1X... Y... Z... F... ;comment
All other blocks are executed unchanged (no compression).
• Motion blocks with extended addresses such as C=100 or A=AC(100) are also
condensed.
• The position values do not have to be programmed directly, but can also be indirectly
specified using parameter assignments, e.g. X=R1*(R2+R3).
• If the option "orientation transformation" is available, then NC blocks in which the tool
orientation (and where relevant, also the tool rotation) is programmed using direction
vectors can also be compressed (see " Compression of the orientation (COMPON,
COMPCURV, COMPCAD) [Page 366] ").
• It is interrupted by any other type of NC instruction, e.g., an auxiliary function output.
260
Command to activate the compressor function COMPON.
Effective: modal
Command to activate the compressor function COMPCURV.
Effective: modal
Command to activate the compressor function COMPCAD.
Effective: modal
Command to deactivate the currently active compressor function.
Programming Manual, 02/2011, 6FC5398-2BP40-1BA0
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