Printronix P9000 Series, User'S Reference Manual

Page: 313 / 334

E-1 Appendix
APPENDIX E
DOWNLOADING CHARACTERS
Introduction
P9012 printers include the ability to create and download unique characters from the host comĆ
puter to the printer's working memory (RAM). Downloaded characters must be reloaded each
time printer power is recycled or RAM is cleared unless they are saved into nonvolatile
memory.
Three commands are involved in downloading a character:
1. SFCC c - defining the new character in a specific print mode and pitch.
2. SFCC V - (Download a Language) if the new character is to be stored in a
currently unused address in the Character Library.
3. SFCC RX - (Character Set Select: International Languages) when ready to
access the downloaded character.
Procedure
NOTE: Each parameter is visually separated by paired brace symbols for clarity in distinĆ
guishing parameters. Do not input these brace pairs in the command sequence.
The command SFCC c is followed by ASCII characters: {PP}{SSSSSE}{A};{data}
where :
{PP} is the print mode and pitch at which the downloaded character will print
(derived from the mn values in Print Mode/Pitch Selection Table 6-7 on
page 6-59).
{SSSSSE} is the decimal value between 0 and 65535 representing the symbol point
of the new character in the Character Library; E is the terminator followĆ
ing this numeric field. No leading zeros are required.
A character can be stored in an unused address or replace an existing
character in the Character Library. If designated to an unused address,
you must use this control code in conjunction with SFCC V (DownloadĆ
ing a Language, page 6-31) to complete the downloading procedure.
However, if a downloaded character replaces an existing character in a
print mode and pitch, that character will be changed in every character
set or international language in which that existing character was used.