Siemens SINUMERIK 840DE Programming Manual page 345

• On detection of a direction reversal, a tolerance defined by the machine data
Programming the end point P4 for approach or P0 for retraction
The end point is generally programmed with X... Y... Z...
• Programming during approach
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:
1.
N30 G41 G147 DISCL=3 DISR=13 X40
Y-10 Z0 F1000
Or
2.
N30 G41 G147 DISCL=3 DISR=13
F1000
N40 G1 X40 Y-10 Z0
Fundamentals
Programming Manual, 10.2004 Edition, 6FC5 298-7AB00-0BP1
SAR_CLEARANCE_TOLERANCE is permitted.
– P in SAR block
4
– P is defined by the end point of the next traversing block.
4
Other blocks can be inserted between the SAR block and the next traversing block
without moving the geometry axes.
8.11 Smooth approach and retraction
;Milling tool T1/D1
;Tool with 7 mm radius
Tool offsets
8-49