Supplementary Conditions - Siemens SINUMERIK 840D sl Function Manual

Example
To achieve a higher path velocity when executing the traversing blocks, compression for short
spline blocks is activated for BSPLINE interpolation:
MD20488 $MC_SPLINE_MODE, Bit 0 = 1
Program code
N10 G1 G64 X0 Y0 Z0 F1000
N20 G91 F10000 BSPLINE
N30 X0.001 Y0.001 Z0.001
N40 X0.001 Y0.001 Z0.001
...
4.5.3

Supplementary conditions

Orientation transformation (TRAORI)
When orientation transformation is active, the compressor functions COMPON, COMPCURV, and
COMPCAD can also compress motion blocks for tool orientation and tool rotation. A detailed
description can be found in:
Reference:
Function Manual, Special Functions; Chapter " F2: Multi-axis transformation" > "Orientation"
> "Compression of the orientation"
Block search with calculation
● If the target block for block search type 2 or type 4 (block search with calculation to ...) is
in a program section in which a compressor function (COMPON, COMPCURV, COMPCAD) is
active, positions are approached on the path calculated by the compressor when the
contour is approached again. These positions must precisely match the positions on the
path programmed in the part program.
● If programmed blocks are eliminated from the part program during compression, these
blocks will not be found at the target block in the block search ⇒ Alarm 15370 "Search target
not found."
Basic Functions
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
B1: Continuous-path mode, Exact stop, Look Ahead
Comment
; Initial setting
; Activation: B spline
; From here: Combine short spline blocks
4.5 Compressor functions
231