Coordinate Control Commands; Scaling - Roland DXY-1300 Command Reference Manual

3.3 Coordinate Control Commands

Coordinate commands handle such tasks as setting the coordinate units and origin, setting the
plotting area, rotating the coordinate axes and the like. They are used as needed.

3.3.1 Scaling

The coordinate system can be divided into two classes: (th e plotter coordinate system and
the user coordinate system. Setting the user coordinates is called " scaling" .
Scaling permits the setting of the coordinate units and the enlargement or reduction of draw
ings depending on the user's purpose.
The coordinate parameter for a command follows the plotter coordinate system until scal
ing is executed; after execution of scaling, it follows the user coordinate system while draw­
ing.
Plotter coordinate system
The plotter coordinate system is the one active in the original condition, and is determin­
ed by the paper size setting chosen with the DIP switch and by the expand mode selec
tion.
The coordinate origin (0,0) is at the bottom left of the paper. In the plotter coordinate
system,
1 plotter coordinate unit = 0.025mm
and thus to specify 1mm, 40 plotter coordinate units must be specified. If inches are used
in the ANSI system, please refer to following conversion formula:
1 inch = 1016 (plotter coordinate units)
User coordinate system
In contradistinction to the plotter coordinate system, the user coordinate system can freel
y set any coordinate origin and coordinate unit. Once the user coordinate is set,
however, the command coordinate parameter follows the user coordinate system from
then on. It can freely set any coordinate units, but the actual values that can legally be
employed are shown below:
-3 2 7 6 8 .0 0 0 0 to +32767.4999
If coordinates are specified that fall outside the above permissible parameter setting
range, an error will result. When setting the user coordinates, caution must be exercised
so the plotting area does not go beyond the permissible parameter setting range.
Setting scaling points P1 and P2
Scaling points P1 and P2 are the standard points used in scaling. Scaling is performed by
setting P1 and P2 to points chosen by the user and then executing the SC command,
which determines the coordinate values for each point. Simply setting P1 and P2 will not
initiate scaling.
( 1 ) Setting from the operation panel
Move the pen to your desired point with the positioning key and then press the
key while pressing the
the P2 key while pressing the ENTER
ENTER key to set this position to P1 In the same way, press
key to set this position to P2.
3-5
P1