3 G/M Codes
3 - 23
3.11 Automatic Reference Position Return, G28
Functions and Purposes:
Via a G28 command, the specified axis is returned to the first reference point at the high
feed-speed of the respective axis.
Format:
G28
or G28 X(U)_____ Z(W)_____
or G28 X(U)_____
or G28 Z(W)_____
Example:
Note that prior to executing the G28 command, the tool compensation command must
be canceled.
Ex:
G00 X1. Z1 (From start-point to the intermediate point)
T100 Tool compensation is canceled (it cannot co-exist with
G28 in the same block.
G28 Tool returns to the 1st reference point on the X / Z-axis.
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