Acu-Rite CNC 3500i user manual #111 = 0 * SET Side CUT Increment to

11.4 Advanced Programming

N210	#111 = 0 ;* SET SIDE CUT INCREMENT TO 0
N220	LOOP #154 ;* LOOP #154 NUMBER OF TIMES
N230	X#153 Y#153 ;* SET SIDE CUT
N240	#111 = #111 #153 ;* DECREMENT SIDE CUT EACH
	LOOP
N250	#101 = #151 + (#111 * 2 ) ;* CALCULATE NEW X
	LENGTH
N260	#102 = #152 + (#111 * 2 ) ;* CALCULATE NEW Y
	LENGTH
N270	X#101 ;* MOVE AROUND SQUARE USING NEW SIDE
	* LENGTHS
N280	Y#102
N290	X( #101)
N300	Y( #102)
N310	END
N320	M99

The read only variables are set in Blocks N60 to N90. Then, the sub-program is called. At Block N170, the first move is made along the X-axis, followed by a move along the Y-axis. At Blocks N190 and N200, the logical negative sign makes the axis move in the opposite direction. The contents of the variables remain the same.

At Block N220, a loop, which ends at Block N310, is set up. The loop runs the number of times contained in variable #154. The first move in the loop is in the X and Y axes to the side of cut value in #153. In Block N240, #111 decrements at each pass through the loop, by the value of the side cut. This value, in turn, is used to calculate a new length of cut for each side.

406 11 G-Code Edit, Help, & Advanced Features