Resetting The Tool Coordinate System (G92.1); Selection Of A Workpiece Coordinate System; Writing Work Offset/Tool Offsets (G10) - Siemens Sinumerik 840D sl Programming Manual

Motion commands
3.1 The coordinate system
3.1.3

Resetting the tool coordinate system (G92.1)

With G92.1 X.. (G Code System A with G50.3 P0) one can reset a shifted coordinate system
before the shift. The tool coordinate system is reset to the coordinate system that is defined
by the active adjustable work offsets (G54-G59). The tool coordinate system is set to the
reference position if no adjustable work offset is active. G92.1 resets shifts carried out
through G92 or G52. However, only the axes that 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

Selection of a workpiece coordinate system

As mentioned above, the user can select one of the already set workpiece coordinate
systems.
1. G92
2. Selection of a workpiece coordinate system from a selection of specified workpiece
3.1.5

Writing work offset/tool offsets (G10)

The workpiece coordinate systems defined through G54 to G59 or G54 P{1 ... 93} can be
changed with the following two processes.
1. Data inputting at HMI operator panel
2. with the program commands G10 or G92 (setting actual value, spindle speed limitation)
38
Absolute commands function in connection with a workpiece coordinate system only if a
workpiece coordinate system was selected earlier.
coordinate systems via the HMI operator panel
A workpiece coordinate system can be selected by specifying a G function in the area
G54 to G59 and G54 P{1...100}.
Workpiece coordinate systems are setup after the reference point approach after Power
On. The closed position of the coordinate system is G54.
;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
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
Programming Manual, 06/09, 6FC5398-7BP10-1BA0
ISO Milling