Printronix S828, Руководство программиста

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Programmer Manual PTX ‐ S828
Chapter 1 EPSON/IBM Commands 28 260071 ‐ 001A
FF
Advances paper to the top of the next page (IBM/EPSON).
ASCII Code
FF
Hexadecimal Value X'0C'
Decimal Value 12
This code is a terminator code, when received, causes all data in the print buffer to be printed out. Then it
advances the paper to the first printable line of the next form. The line counter is set to the first line value
and the column counter is set to the left margin value. This code cancels the double width printing set by
SO code.
HT
Logically moves the print carriage to the next horizontal tab stop (IBM/EPSON).
ASCII Code HT
Hexadecimal Value X'09'
Decimal Value 9
This code logically moves the print carriage to the next horizontal tab stop as defined by ESC D. Up to 28
(IBM mode) or 32 (EPSON mode) horizontal tab stops can be set. The HT code is ignored if no tab stop is
set, the current print carriage position is moved past the last tab position, or the tab stop is on or beyond
the right margin. When the printer is powered on, the tab stops are set every eight columns (default).
In EPSON mode, the default tab stops are retained as logical positions in the page that are affected by
changing the horizontal spacing. The tab stop positions set by ESC D are retained as physical positions
on the page and are not affected by changing the horizontal spacing. When double width printing is
selected, the tab stop setting must take into account that each character occupies two columns. In IBM
mode, the tab stops, both the default and those set by ESC, are retained as logical positions in the page
that are affected by changing the horizontal spacing. The horizontal tab stops can be changed by the ESC
D command.
VT
Advances paper to the next vertical tab stop of the selected VFU channel (IBM/EPSON).
ASCII Code
VT
Hexadecimal Value X'0B'
Decimal Value 11
This is a terminator code and when received causes the contents of the print buffer to be printed before
advancing the paper to the next vertical tab stop set by the ESC B or the ESC b commands.
This code is run normally if vertical tab stops follow the current print position. It runs like an FF code
(EPSON mode) or like a LF code (IBM mode), if the vertical tab stops follow the bottom of form position (
corresponding to the form length if the bottom of the form has not been set), or if the current position is
beyond the last vertical tab stop. It runs like an LF code if no vertical tab stops have been set by the ESC
B or ESC b commands.
In EPSON mode, the vertical tabulations are referred to the VHF channel selected by the ESC / m.Ifno
VFU channels have been selected, the printer assumes the default channel 0.
This command cancels the double width printing set by SO or ESC SO command.