Workpiece Coordinate System (G92); Resetting The Work (G92.1) - Siemens Sinumerik 802D sl Programming Manual

04.07
3.1.2

Workpiece coordinate system (G92)

Prior to machining, a coordinate system for the workpiece, the so called workpiece
coordinate system, needs to be established. This section describes the various
methods how to set, select, and change a workpiece coordinate system.
How to set a workpiece coordinate system
The following two methods can be used to set a workpiece coordinate system:
1. Using G92 (G50 in G code system A) in the program
2. Manually, using the HMI panel
Format
G92 (G50) X... Z... ;
Explanations
The coordinate system for a workpiece is set in such a way that a point on the tool,
for example, the tip of the tool, is regarded as positioned to determined coordina-
tes. Assuming "X.. Z..." is an incremental command value, the work coordinate sy-
stem is defined in such a way that the current tool position is identical with the sum
of the specified incremental values and the coordinates of the previous tool posi-
tion.
3.1.3

Resetting the work (G92.1)

With G92.1 X.. (G code system A: G50.3 P0), 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
© SIEMENS AG 2007 All rights reserved
SINUMERIK 802D sl/840D sl840D/840Di sl/840Di/810D ISO Turning - - 04.07 Edition
;Display: WCS: X100 Y100
;Display: WCS: X10 Y10
;Display: WCS: X50 Y50
;Display: WCS: X140 Y140
Movement Control Commands
3.1 The coordinate system
MCS: X100 Y100
MCS: X100 Y100
MCS: X140 Y140
MCS: X140 Y140
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