Reference Point Approach With Reference Point Selection (G30) - Siemens Sinumerik 840D sl Programming Manual

2.2.3

Reference point approach with reference point selection (G30)

Format
G30 Pn X... Y... Z... ;
For the commands "G30 Pn X... Y... Z;" the axes are positioned on the specified
intermediate point in the continuous-path mode, and finally traversed to the reference point
selected with P2 - P4. With "G30 P3 X30. Y50.;", The X- and Y-axes return to the third
reference point. The second reference point is selected on omitting "P". Axes that are not
programmed in a G30 block are also not traversed.
Reference point positions
The positions of all the reference points are always determined in relation to the first
reference point. The distance of the first reference point from all subsequent reference points
is set in the following machine data:
Table 2- 4
Element
2. Reference point
3. Reference point
4. Reference point
Note
Further details of the points that were considered in the programming of G30 are available in
the Chapter "Reference point approach with intermediate point (G28)". Function G30 is
implemented with the cycle 328.spf as with G28.
ISO Milling
Programming Manual, 06/09, 6FC5398-7BP10-1BA0
Reference points
MD
$_MA_REFP_SET_POS[1]
$_MA_REFP_SET_POS[2]
$_MA_REFP_SET_POS[3]
2.2 Reference point approach with G functions
Drive commands
33