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01/2008 Machine operating area
4.2 General functions and displays
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© Siemens AG 2008 All rights reserved.
SINUMERIK 840Di sl/840D sl/840D Operating Manual HMI-Advanced (BAD) - 01/2008 Edition 4-97
Graphical display of the
active coordinate system
Example:
Meaning of the symbols
(from left to right):
Display of the following transformations:
• Designation of the active work offset
(default value: G500).
• Rotation of the geometry axes involved. Without rotation the
symbol is invisible.
• Mirroring of the geometry axes involved. Without mirroring the
symbol is invisible.
• Scaling of the geometry axes involved. Without scaling the
symbol is invisible.
Sequence of operations
"JOG" mode is selected in the "Machine" operating area.
Act. val.
MCS
The actual values of the machine axes and their positions are
displayed. The softkey label changes to "Act. val. WCS".
The machine coordinate system comprises all the physically existing
machine axes. Reference points, tool and pallet change points are
defined in the Machine Coordinate System.
Act. val.
WCS
When you press the "Act. val. WCS" softkey, the geometry and
special axes plus their positions appear in the "Position" window.
The softkey label changes to "Act. val. MCS". The workpiece
coordinate system is assigned to a specific workpiece. Settings in the
NC program refer to the WCS.
WCS MCS
• You can also toggle between the workpiece and machine
coordinate systems by pressing the "WCS/MCS" key on the MCP.
• The number of places displayed after the decimal point and units o
measurement can be set in machine data.
/PG/ Programming Manual Fundamentals
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