Interface Card User's Guide C82314

to’ access all of the Epson features such as color printing, superscripts; and
subscripts.
Command-Pass-Thru is accomplished by converting the printer command
sequence into a series of two digit hexadecimal values. For example, an Escape
has a decimal value of 27 and a hexadecimal value of 1B.
In Command-Pass-
Thru, an Escape is the character ‘1’ followed by the character ‘B’. To allow the
coax interface to recognize the sequence, it is proceeded by a ‘delimiter
sequence consisting of an ampersand (&), followed by a percent (%). Several
commands may be contained within the enclosing &% pairs. Once the first &%
is detected, the coax interface passes hexadecimal data to the printer until it
receives the next &% or a character is received that is not in the hexadecimal
range of 0 to 9 or A to F -(upper case letters only).
in addition, the user has the option of selecting a different delimiter sequence
using setup command 40 (see Appendix A, command 40).
EXAMPLE
in order to highlight a passage in a document, you may wish to use an Epson
printer command such as the emphasized mode. The printer command sequence
for emphasized printing listed in your Epson printer’s manual is ‘ESC E’, or ‘1B
45’ in hexadecimal, to begin emphasized print and ‘ESC F’, or ‘1B 46’ in
hexadecimal, to end emphasized print.
At the point in the document where emphasized printing is desired, the sequence
&% 1 B 4 5 & % should appear. When you wish to cancel emphasized printing,
insert the sequence & % 1 B 4 6 & %. If the document is viewed on a CRT
terminal, these characters are displayed. During printing, however, these
command sequences only start and stop emphasized mode and do not appear
on the paper and do not take up any space.
NOTE: In this example, the characters are separated by spaces for clarity.
The spaces between each individual character must be removed from
the actual command, but single spaces between pairs of characters
are permitted.
RULES FOR COMMAND-PASS-THRU
Command-Pass-Thru must begin with an &% or the alternate delimiter
characters specified in Command 40.
Hexadecimal values must be used in the command. These values
represent ASCII data which is understood by the Epson printer.