Dascom T2150, User Manual

Page: 135 / 166

User guide Emulations
127
How are escape
sequences used?
Escape sequences are transmitted to the printer by your computer
software via the printer driver. Experienced users and programmers
can also control the printer directly via control sequences, however
before you start working with escape sequences and control codes,
we recommend that you study the computer software manual.
To enter control codes the Ctrl key and an ASCII character must be
pressed simultaneously. For instance, by pressing Ctrl and J a line
feed is accomplished (it is required to output the character string on
the printer). More information concerning this topic is contained in
your computer software manual and the corresponding Program-
mer’s Application Manuals (see section
Programmer’s application
manuals on page 150).
The selected emulation must correspond to the printer driver
of your application program. Settings caused by ESC
sequences remain valid, until they are switched off by another
control code. All settings are reset to the original menu, when
the printer is switched off.
MTPL
As the emulations do not cover the entire scope of your printer, a
new printer language, which is adapted to this printer model, has
been created. Using MTPL you are able to optimize operation and
handling.
MTPL can be used in connection with other emulations or can be
used alone.
Example in BASIC
open “LPT1:” as #1
width #1,255
Text1$ = “10 characters/inch”
Text2$ = “15 characters/inch”
ESC$ = chr$(27)
print
#1,ESC$;"[4w";Text1$;ESC$;"[6w";Text2$;ESC$;"[4w";Text1$
end
Example in Pascal
program cpi_example;
uses printer;
const ESC = #27;
Text1 = “10 characters/inch”;
Text2 = “15 characters/inch”;
begin
writeln(lst,Esc,"[4w",Text1,ESC,"[6w",Text2,Esc,"[4w",Text1);
end.
Printout After the program has been completed the following text will be
printed out:
10 characters/inch
15 characters/inch
10 characters/inch