Acu-Rite CNC 3500i User Manual

7 Programming: Canned Cycles, sub-programs



Calibrate the work probe at least once before trying to use this cycle. 



A preliminary tool-length offset must be set by eye for the work 
probe and that tool offset, and work coordinate active before using 
this cycle in a program. See Section 4, "Tool-Length Offsets" on page 
73.



The Edge Finding Cycle can be run from within a program or from 
Manual Data Input Mode.

To use the Edge Finding Cycle:



Place the probe in the spindle with its tool number active and the 
tool type set to "Touch Probe".



Manually jog the probe stylus less than 0.1" (2.54 mm) away from 
the surface to be found.



Type G141 Qn Wn. If this is run from inside a program, this line 
needs to be repeated for every surface you wish to find.



Execute the line in Manual Data Input Mode by touching NC Start.

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Dir

Q

Axis and direction to find edge. 
0 = X+, 1 = X-, 2 = Y+, 3 = Y-, 4 = Z+, 5 = Z-

Offset

W

Work Coordinate to update with edge 
location in X- or:

Y-axes. If set, work coordinate is updated if 
0 through 3 are specified for Q or Z work 
offset (or TLO if 
updateTloOrWorkOffsetZAxis is set to 
TLO) if Q is set to 4 or 5 and Z TLO if Q is 
set to 6.

Before any tool-length offset is active, you 
must re-call that tool. Work coordinate 
register or Tool-length register is not 
updated if W is not set and a warning 
message tells the operator no update has 
taken place except when Q is set to 6 in 
which case the Spindle Probe TLO will 
always be reset. (Optional)

When positioning the probe from within the program you 
should always use the G146 (Protected Probe Positioning) 
cycle (see G146 instructions later in this document).