User`s manual

Part 2
21
2. Coordinate System
The PNC-3100 employs three separate coordinate systems (described below) according to the application or purpose
of use.
Machine Coordinate
Under the machine coordinate system, the coordinates
are determined mechanically against the PNC-3100.
This system forms the basis of the "work coordinates"
and "user coordinates" which are explained later. The
machine coordinate range is equivalent to the PNC-
3100's maximum operating range. The point to which
the XY table and head move when the power is turned
ON is the origin of the machine coordinate system (x, y,
z)=(0, 0, 0). (The origin is fixed.)
The machine coordinate system basic unit is fixed as one
step = 1/100 mm (0.00039").
Work Coordinate
The origin of the machine coordinate system is fixed, but
there is a coordinate system in which the origin can be
moved relative to the machine coordinate system. This
system is called the work coordinate system.
In the work coordinate system, the home position is the
XY origin and Z0 is the Z axis origin. The origin of the
work coordinates can be set by setting the home position
(the XY axis origin) and Z0 (the Z axis origin).
The origin of the work coordinates is the standard point
for cutting against the attached workpiece.
The work coordinate system basic unit is fixed as one
step = 1/100 mm (0.00039").
X
Y
Z
The origin
of the machine
coordinates
User Coordinate
* If you are using application software, there is no
need to worry about the user coordinate system.
You can ignore it completely.
Under the machine coordinate system and the work coordinate system, the unit value is fixed. In contrast, the user
coordinate system allows the user to set the unit value freely. (However, the unit value can be set only for the XY axis.
The Z axis unit value cannot be set.)
The user coordinate system unit is determined by replacing (converting) the work coordinate system unit with the user
coordinate system unit. Also, the user can set the cutting data output to the position of the basic point of the workpiece
on the XY axis. This operation is called scaling. It can be performed with the use instructions. For further details,
please refer to the optional CAMM-GLI Programmer's Manual.
If scaling is not performed, the user coordinate system unit and the work coordinate system unit are equivalent.
X
Y
Z
The origin
of the work
coordinates