some commands or parameters may be different for a specific printer type. in those cases it will be indicated to which printer type a command or parameter applies.
appendix f epson lq 2550 and esc/p2 quick reference
characters used in control functions appear in monospaced type. table 1 explains some of the conventions used.
a pair of numbers separated by a slash ( / ) character indicates column/row notation. this notation refers to the location of a character in a standard code table, such as ascii. (example: 1/b = 1b is the hex-code for escape)
spaces appear between characters in sequence for clarity; they are not part of the format.
at the end of this chapter you will find a listing of the epson lq 2550 emulation commands classified by hex code and a hex - decimal conversion table. the following conventions are used in the command listings:
1 this command defines one or more characters in a ram character table.
2 all user defined characters are erased when the printer is switched off.
3 set the interface buffer to 1k or 8k (max 50 defined char in lq, 128 in draft), or use a ram card for up to 128 user defined characters in lq.
4 set maximum every second dot to "1" in a horizontal line !
5 user defined characters can be defined in four different print modes: resolution (vertical x horizontal)
normal size with draft: 24 x 15
normal size with lq / proport.: 24 x 37
sub-/ superscript with lq / proport.: 16 x 37
6 the characters can only be activated in the same mode as defined.
7 the character layout is coded in three bytes (24 bit vertical) or two bytes (16 bit vertical) per column, top to bottom.
8 to print the character change to the user defined character set with esc % .
sub-/ superscript with draft: 16 x 15
examlpe: vertical box, normal size with draft at code table position "41"
hex: 1b 26 00 41 41 08 05 08 ff ff ff 00 00 00 80 00 01 00 00 00 ff ff ff (p3=8, p4=5, p5=8)
