G28 Reference Point Return
G28 reference point return G-code is used to approach the reference point via an intermediate position.
The intermediate position can be specified absolute X, Z or relative U, W.
What is reference point read CNC Zero Return or Reference Point Return
During G28 reference point return command machine,
first reaches intermediate-point rapidly (G00),
then it moves rapidly to reference-point position.
Programming
G28 X(U) Z(W)
X, Z absolute intermediate point position.
U, W incremental intermediate point position.
Examples
For following exmaples suppos actual referece-point position on your machine is X330 and Z529.
Example 1
G28 U0 W0
the machine will directly move to reference-point (as no intermediate point is given).
![G28 Reference Point Return G28 U0 W0](http://www.helmancnc.com/wp-content/uploads/2013/03/G28-Reference-Point-Return-CNC-Lathe.jpg)
G28 Reference Point Return G28 U0 W0
Example 2
G28 X100 Z100
the machine will first move to intermediate position X100 Z100
and then will move to reference-point.
![G28 Reference Point Return](http://www.helmancnc.com/wp-content/uploads/2013/03/G28-Reference-Point-Return-CNC-Lathe1.jpg)
G28 Reference Point Return