10/10/03

6.COMMANDS

6.1.Basic printer operations

The most common printer operations are described in this section. Some are invoked using control codes alone - the rest require escape sequences. For the sake of completeness, several instructions which are part of the Epson FX-850 mode instruction sets, but which an HL Series printer ignores are included.

Null

NUL (0) <00h>

NUL (ASCII code 0) is ignored.

Bell

BEL (7) <07h>

BEL (ASCII code 7) is ignored.

Space

SP (32) <20h>

The SP control code (ASCII code 32) moves the current print position one space to the right.

LPRINT CHR$(32); 'Print a space

Backspace

BS (08) <08h>

The BS control code (ASCII code 8) moves the current print position one space to the left.

This code is only effective when used with left justification, which is the default justification mode.

LPRINT CHR$(8); 'Backspace

Carriage return

CR (13) <0Dh>

The CR control code (ASCII 13) moves the print position to the left margin on the current line.

If automatic line feed is on, this code moves the current print position to the left margin on the next line. On some printers you can turn on automatic line feed using the control panel switches.

LPRINT CHR$(13); 'Carriage return

Line feed

LF (10) <0Ah>

The LF control code (ASCII code 10) moves the current print position down one line, using the current line space setting.

This code does not cause a carriage return to be performed.

If the print position is such that this operation would move it below the bottom margin, the current page is ejected and the print position is moved to the top of the next page instead.

Form feed

FF

(12)

<0Ch>

The FF control code (ASCII code 12) ejects the current page and moves the current print position to the top of the next page, unless the current page is blank.

This code does not cause a carriage return to be performed, hence the print position does not change horizontally.

If the current page is blank this control code has no effect.

LPRINT CHR$(12); 'Form feed

CHAPTER 6 EPSON - 9

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Homelite HL-1070, HL-P2500, HL-1660E, HL-2400CE, HL-1450, HL-1050, HL-1250, HL-1470N, 2060, HL-1270N manual Basic printer operations