Notes
SINUMERIK 802D sl Operating and Service Training Manual Page 2
C74
C74
Section 2
Overview of the coordinate system
The following diagram gives an overview of the offset possibilities of the
control:
Machine Coordinate Sy
stem (MCS):
The machine coordinate
system is determined by the manufacturerer of
the machine, the zero value is deter
mined at the 1st setup by the machine
tool builder
and should only be changed by experienced service personnel.
The G code G153 can be used blockwise to per
form a move in the MCS at
any time in the program.
NOTE: The
instruction G153 is only blockwise active
!
Description
of the single components:
Description of the zero offset:
The zero offset determines the difference between the Machine Coordina-
te System (MCS) and t
he Workpi
ece Coordinate System (WCS).
For programming, the dimensions are with reference to the
Workpiece
Coordinate System.
The exact position of th
e workpiece on the machine is not known at the
time of writing the workpiece progra
m.
The distance between the machine zero point and the workpiece zero
point must therefore be obtained.
This geometric difference is known a
s the zero offset.
2.1 Overview of the coordinate system
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