Acu-Rite CNC 3500i User Manual

ACU-RITE 3500i



When an X, Y, and/or Z move is programmed using the Protected 
Positioning Cycle, the control stops the axis travel and program and 
alarm, if the probe stylus is triggered before reaching the target set 
in the X, Y, and/or Z parameters. 



This cycle is intended to offer some degree of safety when moving 
the probe around the part; however, it is not fool proof and does not 
protect against gross bad programming where the probe body 
would encounter an obstruction before the probe stylus is triggered. 
Extreme care should be taken to avoid this condition as probe 
damage may result.



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. The tool offset, and work coordinate must be active before 
using this cycle in a program. See Section 4, "Tool-Length Offsets" 
on page 73.



The Protected Probe Positioning Cycle can be run from within a 
program or from the Manual Data Input Mode.

To use the Protected Probe Positioning Cycle:



Place the probe in the spindle and make sure that its tool and work 
coordinate offsets are active and the tool type set to "Touch Probe".



Type G146 Xn Yn Zn Fn. If this is run from inside a program, this line 
needs to be repeated for every move you wish to make. 



Execute the line in Manual Data Input Mode by touching Start

X

X

X Target position relative to current active 
work coordinate.

Y

Y

Y Target position relative to current active 
work coordinate.

Z

Z

Z Target position relative to current active 
work coordinate combined with the current 
active tool-length offset.

Feed

F

Feedrate at which to travel to target. F is 
only active for the current move so it must 
be restated every time or the default takes 
precedence. The default is set in the 
machine setup parameter 
positioningFeedrate_Normally.
(Optional)