Epson LQ-2550 User Manual page 209

DC3
Format:
ASCII code:
Decimal:
Hexadecimal: 13
Comments:
Puts the printer into the deselected state until the select printer code
(DCl) is received. The printer cannot be reselected with the ON LINE
button.
DEL
Format:
ASCII code:
Decimal :
Hexadecimal: 7F
Comments:
Removes the last text character on the print line but does not affect
control codes.
Printing direction
ESC <
Format:
ASCII code:
Decimal:
H e x a d e c i m a l : 1 B 3 C
Comments:
Printing is normally bidirectional. This command selects unidirectional
printing for one line only. The print head moves to the extreme left
(home) position, and printing takes place from left to right. This
command is cancelled by a carriage return.
Command Summary
DC3
19
DEL
127
ESC <
27 60
Select Unidirectional Mode (one line)
Deselect Printer
Delete Character
8-9