Siemens SINUMERIK 840D sl Function Manual page 1414

W1: Tool offset
18.5 Tool radius compensation 2D (TRC)
End point P
P can be determined by the end point of the next traversing block.
4
Further blocks (dummy blocks) can be inserted between the SAR block and the next traversing
block without moving the geometry axes.
The end point is deemed to have been programmed in the actual SAR block for approach if
at least one geometry axis is programmed on the machining plane (X or Y with G17). If only
the position of the axis perpendicular to the machining plane (Z with G17) is programmed in
the SAR block, this component is taken from the SAR block, but the position in the plane is
taken from the following block. In this case, an alarm is output if the axis perpendicular to the
machining plane is also programmed in the following block.
Example:
$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
1414
can be programmed in the actual SAR block.
4
; Milling tool T1/D1
; Tool with 7 mm radius
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
Basic Functions