Switching Between The Machine/Workpiece Coordinate System (Mcs/Wcs) - Siemens SINUMERIK 840D Operator's Manual

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4.2.3 Switching between the machine/workpiece coordinate system (MCS/WCS)

Machine axes
Geometry axes and
special axes
MCS
WCS
 Siemens AG, 2004. All rights reserved
SINUMERIK 840D/810D Operator's Guide HMI Embedded (BEM) – 03.04 Edition
4.2 General functions and displays
Function
The display can be toggled between the machine and workpiece
coordinate systems by means of special key "MCS/WCS" on the MCP
or via softkeys (depending on MCP model and user program). The
actual position display for the distance-to-go and the corresponding
axes change.
Machine axes are axes that actually exist on the machine and have
been parameterized during installation.
These are the axes programmed in the part program. Geometry axes
and special axes are offset by the selected zero offset relative to the
machine axes.
Three is the maximum number of Cartesian geometry axes.
The machine coordinate system (= MCS) refers to the coordinates of
the machine axes, i.e. all machine axes are displayed in the machine
coordinate system.
Machine position
X
Y
Z
An offset (e.g. zero offset, rotation) can be used to set up a
relationship, e.g. with the workpiece clamp. This relationship defines
the position of the workpiece coordinate system (= WCS) in relation to
the machine coordinate system. The workpiece is always represented
in a Cartesian coordinate system.
All geometry axes and special axes are displayed in the workpiece
coordinate system.
Work position
X1
Y1
Z1
Machine Operating Area
Repos offset
Repos offset
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