
2009/06/29
CHAPTER 9 HP-GL - 4
2. INTRODUCTION
The HP-GL graphics mode emulates 40 out of 56 instructions for the HP 7475A plotter made by Hewlett-
Packard.
Default measurement unit in the HP-GL graphics mode is 1/1016"(0.025mm).
2.1. HP-GL
Syntax
A command consists of a two-letter instruction mnemonic, a parameter field (not needed for some instructions)
and a terminator. Parameters following the instruction mnemonic must be separated from each other by at least
a single space or comma.
P A 10 20 ;
Instruction Mnemonic
Parameter Field
Terminator
At least one space or
comma (,) must be used
Numeric values used in the parameter field are in one of the following four formats.
(1) Integer - integers between -2
30
and 2
30
-1. Real numbers specified for a parameter that should be an integer
are rounded to the nearest integer.
(2) Clamped integers - integers between -32768 and 32767. Values outside this range are converted to the
nearest integer within the range. Real numbers are rounded to the nearest integer.
(3) Real - real numbers between -2
30
and 2
30
-1.
(4) Clamped Real - real numbers between -32768 and 32767. Values outside this range are converted to the
nearest real number within the range.
2.2. Font
Selection
Eighteen character sets compatible with the HP 7454A are available.
2.3. Coordinate System and Printing Area
2.3.1. Coordinate
system
Paper feed direction
X
Y
Home Position
The home position is at the upper left corner of the area where printing is possible.
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Страница 365: ...2009 06 29 CARBON COPY FUNCTION 1 CHAPTER 10 CARBON COPY FUNCTION ...
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Страница 462: ...2009 06 29 APPENDIX C HBP MODE COMMANDS 1 APPENDIX C HBP MODE COMMANDS For HL 820 1020 1040 Only ...
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Страница 485: ...2009 06 29 APPENDIX D REFERENCE LIST OF MX 2000 4000 5000 7000 SERIES UNIQUE COMMANDS 10 ...