Acu-Rite CNC 3500i user manual Protected Probe Positioning, 229

Protected Probe Positioning

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.

Field Code Description

XX X Target position relative to current active work coordinate.

YY Y Target position relative to current active work coordinate.

ZZ 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)

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

7.3 Probing Cycles

ACU-RITE 3500i 229