Siemens SINUMERIK 828D

W1: Tool offset
18.5 Tool radius compensation 2D (TRC)
Basic Functions
1476 Function Manual, 09/2011, 6FC5397-0BP40-2BA0
18.5.4.6 Examples
Example 1
The following conditions must be true:
• Smooth approach is activated in block N20
• X=40 (end point); Y=0; Z=0
• Approach movement performed with quadrant (G247)
• Approach direction not programmed, G140 is valid, i.e., because TRC is active (G42) and compensation value
is positive (10), the contour is approached from the right
• Approach circle generated internally (SAR contour) has radius 20, so that the radius of the tool center path is
equal to the programmed value DISR=10
• Because of G341, the approach movement takes place with a circle in the plane, resulting in a start point at
(20, -20, 0)
• Because DISCL=5, point P2 is at position (20, -20, 5) and, because of Z30, point P1 is in N10 at (20, -20, 30)
Figure 18-21 Contour example 1
Part program:
$TC_DP1[1,1]=120 ;Tool definition T1/D1
$TC_DP6[1,1]=10 ; Radius
N10 G0 X0 Y0 Z30
N20 G247 G341 G42 NORM D1 T1 Z0 FAD=1000 F=2000 DISCL=5 DISR=10
N30 X40
N40 X100
N50 Y-30
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