Programming instructions

NC Programming 17VRS Motion Commands, Dimension Inputs
3-5
DOK-MTC200-NC**PRO*V17-ANW1-EN-P
3.4 Zero Points
Zero points and various reference points used to establish workpiece
geometry are defined on all numerically controlled machines.
The machine zero point is located in a fixed position at the origin of the
machine coordinate system, and it cannot be moved.
M
The machine reference point is a defined point located within the working
range of the machine. It is used to establish a defined initial position after
the machine is powered on. The machine reference point is established
by the machine builder in each axis in which incremental positioning is
used.
R
Note:
The reference dimensions are set in the drive parameters
The workpiece zero point is the origin of the workpiece coordinate sys-
tem. The programmer establishes it as the program zero point which is
used as the basis for all workpiece dimensions. The reference to the ma-
chine zero point is established by the zero offset value when the machine
is set up.
W
Examples
W
Workpiece
Table
R
M
Y
X
Fig. 3-4: Zero points—drilling/milling machine
Machine zero point
Icon for the machine zero point
Machine reference point
Icon for the reference point
Workpiece zero point
Icon for the workpiece zero
point