Acu-Rite CNC 3500i user manual 212

7.3 Probing Cycles

Field	Code	Description
OvrSlw	S	This is the override for the slow feedrate
Feed		that was set in the machine setup
		parameter ZFirstPickFeedRate_Slow. This
		is used for the same reason as the M cycle
		parameter. This can only be set slower.
		Trying to set this higher will result in the
		software using the original feedrate.
		(Optional)
OvrRPM	R	This is the override for the RPM that was
		set in the machine setup parameter
		calibAndToolMeasurementRPM. This is
		used for the same reason as the M cycle
		parameter. This can only be set slower.
		Trying to set this higher will result in the
		software using the original RPM. (Optional)

Large tools can result in probe damage if the feedrate is set too fast. For this reason, the cycle parameters: M, S, and R have been added to enable the programmer/ operator to override the values in the machine setup parameters for the specific tool being checked or set.

You must:

Load the tool in the spindle and call up that tools offset.

Know the distance from the top of the probe stylus down you have to move so that the largest part of the tool diameter is even with the side of the probe stylus for diameter measurement. That value is placed in E if different from the default 0.1" (2.54 mm).

Position the tool over the probe stylus so that the tooth that sticks down the furthest is directly over the center of the probe stylus and above the stylus less than 0.200 (5.08 mm).

To measure the tool diameter:

Jog the tool to the top of the probe stylus so that the tooth that sticks down the furthest is directly over the center of the probe stylus.

212 7 Programming: Canned Cycles, sub-programs