
Chapter 11
Coordinate Control
11-47
Figure 11.27
Results of Example 11.15
X
10
15
5
Z
DiameterProgramming
Mode (G08)
G90G08X12.Z20;
or
G91G08X-8Z-5.;
6
12
10 20
RadiusProgramming
Mode (G07)
G90G07X6Z20;
or
G91G07X-4.Z-5;
510152025
12025-I
Important: You must always program the following as radius value,
regardless of whether G07 or G08 is active:
Center point assignment (addresses R, I, K) for circular interpolation
Feedrates in the X-axis direction (change in radius per revolution G95
or radius per minute G94)
The threading cycle parameter E or F when face threading is being
programmed
Position displays are also impacted by radius diameter mode.
Diameter/radius axes (selected in AMP) are displayed with either an R or a
D next to t hem indicating which mode is active and currently represented
on the CRT. This even applies to the machine coordinate system (absolute
display) and offset tables.
Refer to your system installers documentation for details on which axes on
your system have been configured to allow both diameter and radius
programming. This manual assumes only the X axis i s configured to allow
diameter and radius programming.
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