Siemens Sinumerik 840D sl Programming Manual page 274

Tool radius compensation
11.4 Smooth approach and retraction
Programming of end point P4 for approach
End point P
by the end point of the next traversing block. More blocks can be inserted between an SAR
block and the next traversing block without moving the geometry axes.
Example:
Program code
$TC_DP1[1,1]=120
$TC_DP6[1,1]=7
N10 G90 G0 X0 Y0 Z30 D1 T1
N20 X10
N30 G41 G147 DISCL=3 DISR=13 Z=0 F1000
N40 G1 X40 Y-10
N50 G1 X50
...
N30/N40 can be replaced by:
N30 G41 G147 DISCL=3 DISR=13 X40 Y-10 Z0 F1000
or
N30 G41 G147 DISCL=3 DISR=13 F1000
N40 G1 X40 Y-10 Z0
Programming of end point P0 for retraction
For retraction, the end point of the SAR contour cannot be programmed in a following block,
i.e. the end position is always taken from the SAR block, irrespective of how many axes have
274
can be programmed in the actual SAR block. Alternatively, P
4
Comment
;Milling tool T1/D1
;Tool with 7 mm radius
Programming Manual, 01/2015, 6FC5398-1BP40-5BA2
can be determined
4
Fundamentals