Rockwell Automation 8520-MUM 9/Series CNC Mill Operation and Programming Manual Documentation Set - Manual (Page 693)

Skip, Gauge, and Probing Cycles
Chapter 27
27-19
Format for an adaptive depth block is as follows:
G26
X__
Y__
Z__ I__
J__
K__
;
Where: Programs:
X, Y, or Z Adaptive Depth Axis word. Use the axis word associated with the adaptive
depth (the system installer selects this axis as the controlling axis in AMP).
Program an axis destination that is sufficiently beyond where you expect the
depth probe to contact the part surface. This position should be far enough
beyond the probe contact point so as no deceleration occurs before the
probe fires. This destination can be programmed as either an absolute or
incremental value (G90 or G91 mode). Only one axis word can be
programmed in a G26 block.
I, J, or K Axis integrand. Use the axis integrand for the adaptive depth axis. Program
an incremental distance equal to the amount of deflection you want the
adaptive depth probe to depress. Since this integrand value is unsigned, the
incremental deflection programmed here is in the same direction of motion as
when the trip occurs. This should be the actual depth of the hole beyond the
part surface. This axis integrand word is always an incremental value. The
resolution to which you can program this word is dependant on the adaptive
depth axis word format.. You may be able to program this depth with greater
accuracy than the axis is normally capable of. The system installer also sets
the maximum allowable adaptive depth probe deflection in AMP. This value
is also the maximum value for the integrand.
WARNING: The system installers maximum value for probe
deflection is relative to the probe zero point. It is not an
absolute value. Don’t allow a large amount of probe deflection
where you establish the zero point. The larger this deflection,
the greater chance that you will exceed the maximum deflection
your probe can withstand thus nullifying your machine tool
builders maximum probe deflection.