32 Line Matrix Printer LinePrinter Plus Programmer's Reference

ManualsBrandsHP ManualsServerHP NonStop G-Series

100

Tab, Horizontal

ASCII Code HT

Hex Code 09

Dec Code 09

Purpose Moves the logical printhead right to the next horizontal tab stop.

Discussion Power-on default horizontal tabs are set at every eighth

character starting at position 9 (9, 17, 25). If there are no

horizontal tabs set or the logical printhead is located at the last

character column, the code is ignored and no movement occurs.

If double-wide, double-high attributes are enabled, single-wide

character spacing is used. Horizontal tabs are stored as a

relative position; therefore, character pitch changes will change

horizontal tab positions. Refer to the ESC D control code

description to set new tab positions.

Tab Set/Clear, Horizontal

ASCII Code ESC D

n1 n2...nk

NUL

Hex Code 1B 44

n1 n2...nk

Dec Code 27 68

n1 n2...nk

Purpose Sets up to 28 horizontal tab positions.

Discussion

n1, n2,

up to

denote character column positions for tab stops

(at the current character pitch), where

and

represent the

first two tab stops and

is the final tab stop. You may specify

from 1 up to 28 tab stops (all parameters after 28 are ignored).

The leftmost character column position is 1. The value for each

tab stop can range from 1 through 255 (hex 01 through hex FF),

inclusive, and all tabs must be specified in ascending order. Any

out-of-order symbols are ignored, though the remainder of the

sequence is processed.

If you are defining a sequence of tabs, terminate the string with a

00H (

not

an ESC D 00H). If you want every column to be set with

a horizontal tab, use ESC D 00H. If only one tab position is set

and it is beyond the right margin, then every column is also set

as a horizontal tab. Any change in character pitch within a line

changes the tab positions for the entire line. All control codes

that define horizontal distance expressed in units of characters

are stored internally in character columns.

Example The following example illustrates horizontal tab setting and

accessing.