Rockwell Automation 8520-GUM 9/Series CNC Grinder Operation and Programming Manual Documentation Set - Manual (Page 550)

Dresser/Wheel Radius Compensation
Chapter 15
15-62
Figure 15.55
Typical Interference Error
Compensated path
Programmed path
Error is generated
because compensated vec-
tors cross
Compensated path
necessary
to cut arc
r
r
r
12145-I
Disabling Error Detection
You can disable all of the above error detection (with the exception of
circular departure too small cases) for a specific block or portion of a part
program. To disable the error detection for a specific block, your system
installer must have defined an M-code in AMP. By programming this
M-code in a block, you can disable all error detection for dresser/wheel
radius compensation. Error detection is disabled until another M-code
defined in AMP to re-enable error detection is programmed in a block.
Important: You cannot disable circular departure too small cases. It is not
possible for the control to execute a compensated path when this error
occurs.
The default condition is error detection enabled. Default values for these
M-codes are:
M800 - disables error detection
M801 - enables error detection
See documentation prepared by your system installer for the M-codes used
on a specific system.
END OF CHAPTER