Rockwell Automation 8520 9/Series CNC Lathe - Manual (Page 510)

Tool Tip Radius Compensation (TTRC)
Function
Chapter 21
21-26
Figure 21.20 and Figure 21.21 show examples of typical exit moves using
type B TTRC. All examples assume that the number of non-motion blocks
before the designation of the G40 command has not exceeded the number
allowed as determined by your system installer in AMP.
Figure 21.20
Tool Path for Exit Move Straight Line-to-Straight Line
0 £q £ 90
90 £q £ 180 180 £q £ 270
270 £q £ 360
A
Programmed
path
G41
G42
Programmed
path
G41
G42
Programmed
path
G41
G42
Programmed
path
G41
G42
q
q
q
q
A
A B
C
D
E
End-point
C
B A
B
C End-point
End-point
E
End-point
B
C
D
r
r
r
r
r
r
r
r
r
r
r
r
r
r
r
r
r
r
G39 (Linear Generated Blocks)
G39.1 (Circular Generated Block) G39 (Linear Generated Blocks)
G42
G41
Programmed
path
q
r
r
r
End-point
A B
C
D
G39.1 (Circular Generated Block)
G42
G41
Programmed
path
End-point
q
r
r
r
270 £q £ 360
A B
C
D
0 £q £ 90