Printek 4503 - Manual (Page 107)

Page 6-1
SIMPLE TTY EMULATION
Introduction
This section describes the control codes and escape sequences comprising simple
TTY emulation. This emulation may be selected by specifying "Mode: TTY" in the
"Setup: INTERFACE" menu, or via software with the ESC ESC 6 sequence. While
this emulation is selected, control codes and escape sequences from other emulations
are not available.
Control codes and escape sequences are used to control printer operation. An ASCII
control code is a single character in the range 00 hex through 1F hex, and 7F hex.
The ESC (Escape) control code (1B hex) is used to introduce character strings called
escape sequences, which provide an extension of the commands available with ASCII
control codes.
TTY emulation is unique in that it does not support any escape sequences (except for
the ESC ESC n sequence, which may be used to select a different emulation).
Spaces are used when documenting escape sequences to increase readability. The
spaces within the sequences are for readability only; they are not part of the
sequences themselves. Characters that appear in italics (such as "n") are not sent to
the printer as is; they are used as a place holder indicating that some value must be
supplied.
Multiple character strings without intervening spaces typically represent control
codes. For example, BS is the Backspace control code (08 hex), not the two
characters "B" and "S" (42 and 53 hex). An ASCII Control Code Table is contained
in the appendices for your convenience. If you have any doubt about how to interpret
a documented control code or escape sequence, refer to the hex representation in the
provided example. This should clarify any ambiguity. The examples may also be
helpful when analyzing a hex dump (see chapter 8) printed by the printer.