Rockwell Automation 8520 9/Series CNC Lathe - Manual (Page 669)

Chapter
27
27-1
Skip and Gauge Probing Cycles
This chapter describes the external skip and gauging functions available on
the 9/Series control. External skip functions are motion generating G-code
blocks that can be aborted when the control receives an external signal
through the PAL program. Gauging functions are similar to the external
skip functions except that the axis coordinates (at the time the external
signal is received) can be used to modify the tool offset table.
This chapter describes theses major topics in detail.
Topic: On page:
External skip functions 27-2
Tool gauging external skip function 27-3
Important: The G04 dwell feature may also be enabled as an external skip
or tool gauging command. For details on programming a G04, see chapter
14.
The 9/Series control provides several means of triggering an external skip
or gauging block:
discrete inputs on the I/O ring
any one of the four available “high speed inputs”
a “probe” input that directly latches the feedback counters
These inputs, each with different degrees of precision, may be used to
signal the control to store the current axes positions. See the
documentation prepared by your system installer for details on your
specific machine.
These conditions must be satisfied when an external skip or gauging bock
is executed:
cutter compensation must be disabled (G40 mode) when the block is
executed
the block that contains the external skip G-code (excluding G04 as
external skip) must be a linear block.
27.0
Chapter Overview