Homelite HL-1070, HL-P2500, 2060 HP-GL Syntax, Font Selection, Coordinate System and Printing Area

10/10/03

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.

Parameter Field

Instruction Mnemonic

Terminator

P A 10

At least one space comma (,) must be u

Numeric values used in the parameter field are in one of the following four formats.

(1)Integer - integers between -230and 230 -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 -230and 230 -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 direc

Y

Home Position

X

The home position is at the upper left corner of the area where printing is possible.

CHAPTER 9 HP-GL - 4