System information

SECTION FOUR - PREPARATORY FUNCTIONS (G CODES)
Example of G28 and G29:
X1 Y1 Point A
G28 X3 Y2 Point B then Point R
G29 X6 Y1.5 Point B then Point C
G30 2nd, 3rd, 4th Reference Point Return
This function works in an identical manner to the G28 reference point return except that a 2nd,
3rd, and 4th reference point can be called. The command format is as follows.
G30 P3 X____ Y____ Z____
G30 P2 X____ Y____ Z____
G30 P4 X____ Y____ Z____
reference point intermediate point
If no P is specified, P2 is assumed. P <
1 and P > 5 are illegal and will result in an error 542
“G30 illegal return to reference parameter on G30 block”.
224