Resetting The Work (G92.1) - Siemens SINUMERIK 802D sl Programming Manual

04.07
Whenever an absolute command is issued, the base point moves to the targeted
position. The difference in position between the tool tip and the base point is com-
pensated by the tool length offset in order to move the tool tip to the targeted posi-
tion.
3.1.3

Resetting the work (G92.1)

With G92.1 X.., you can reset an offset coordinate system before shifting it. This
resets the work to the coordinate system which is defined by the actively settable
work offsets (G54--G59). If not settable work offset is active, the work is set to the
reference position. G92.1 resets offsets which have been performed by G92 or
G52. Only axes which are programmed are reset.
Example 1:
N10 G0 X100 Y100
N20 G92 X10 Y10
N30 G0 X50 Y50
N40 G92.1 X0 Y0
Example 2:
N10 G10 L2 P1 X10 Y10
N20 G0 X100 Y100
N30 G54 X100 Y100
N40 G92 X50 Y50
N50 G0 X100 Y100
N60 G92.1 X0 Y0
3.1.4 How to select a workpiece coordinate system
As described below, the user may choose from set workpiece coordinate systems.
1. G92
Absolute commands work with the workpiece coordinate system once a work-
piece coordinate system has been selected.
2. Selecting from workpiece coordinate systems previously set up by using the
HMI.
A workpiece coordinate systems can be selected by determining a G code from
G54 to G59, and G54 P{1...100}.
Workpiece coordinate systems are set up subsequent to reference position re-
turn after power--on. The default coordinate system after power--on is G54.
© Siemens AG 2007 All rights reserved
SINUMERIK 802D sl/840D/840D sl/840Di/840Di sl/810D ISO Milling (PGM) - - 04.07 Edition
;Display: WCS: X100 Y100
;Display: WCS: X10 Y10
;Display: WCS: X50 Y50
;Display: WCS: X140 Y140
;Display: WCS: X100 Y100
;Display: WCS: X100 Y100
;Display: WCS: X50 Y50
;Display: WCS: X100 Y100
;Display: WCS: X150 Y150
Movement Control Commands
3.1 The coordinate system
MCS: X100 Y100
MCS: X100 Y100
MCS: X140 Y140
MCS: X140 Y140
MCS: X100 Y100
MCS: X110 Y110
MCS: X110 Y110
MCS: X160 Y160
MCS: X160 Y160
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