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Siemens SINUMERIK 840D Operator's Manual Page 76

Computerized numerical control system for machine tools.
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4
Machine Operating Area
4.2 General functions and displays
Machine manufacturer
Act. val.
MCS
Act. val.
WCS
Zoom
act. val.
WCS MCS
4-76
Machine data are used to define whether the programmed frames are
to be calculated when displaying the WCS (settable zero system =
SZS display).
Please refer to the information and specifications provided by the
machine manufacturer!
Operating sequence
"Jog" mode is selected in the "Machine" operating area.
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. References points, tool and pallet change points are
defined in the MCS.
When you select softkey "Act. val. WCS", the geometry and auxiliary
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.
Once the softkey has been pressed, the display comes up in enlarged
view.
You can get back to normal view via the Recall key.
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 of measure can be set in machine data.
SINUMERIK 840D/810D Operator's Guide HMI Embedded (BEM) – 03.04 Edition
4
03.04
 Siemens AG, 2004. All rights reserved

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