Anaheim DPJ72LC3, DPJ72LC2, DPJ72LC4 manual G29 Return from Reference Point

Section 4 System Programming 53

If the move contains positive Z movement, the machine first moves up in the Z axis and then moves across in the XY plane. If the move contains negative Z movement, the machine first moves across in the XY plane and then moves down in the Z axis.

If you want the G28 command to move only one or two axes, you can limit the movement to those axes by adding the parameters “X0”, “Y0”, or “Z0” after the G28 command. Then, LC moves only the indicated axes to their Tool Change Position coordinates. A typical use is to only raise the Z axis for a manual tool change (“G28 Z0”).

Example:

The Tool Change Position is defined as Machine Coordinate X=1, Y=1, Z=-1.

G01	X1.5 Y2.5 Z-3 F10	Linear move to the Program Coordinate
		X=1.5, Y=2.5, Z=-3
G28	Z0	Rapid move in the Z axis only to Machine
		Coordinate Z=-1
G01	X1.5 Y2.5 Z-3 F10	Linear move to the Program Coordinate
		X=1.5, Y=2.5, Z=-3
G28		Rapid move in the Z axis to Machine
		Coordinate Z=-1 followed by a rapid move
		in the XY plane to Machine Coordinate
		X=1, Y=1
G01	X1.5 Y2.5 Z-3 F10	Linear move to the Program Coordinate
		X=1.5, Y=2.5, Z=-3
G28	X0 Y0 Z0	Rapid move in the Z axis to Machine
		Coordinate Z=-1 followed by a rapid move
		in the XY plane to Machine Coordinate

X=1, Y=1 (identical to the G28 command with no parameters specified)

G29 Return from Reference Point

The G29 command moves the tool to the designated XYZ coordinate at the rapid rate.

If the move contains positive Z movement, the machine first moves up in the Z axis and then moves across in the XY plane. If the move contains negative Z movement, the machine first moves across in the XY plane and then moves down in the Z axis.

Example:

The Tool Change Position is defined as Machine Coordinate X=1, Y=1, Z=-1.

G01 X1.5 Y2.5 Z-3 F10 Linear move to the program coordinate X=1.5, Y=2.5, Z=-3