Epson SQ-2550 User Manual page 114

2. Run either an application program or one you have written
in any programming language. Your printer prints all the
codes sent to the printer in hexadecimal format as shown
below.
3. To turn off the data dump mode, press the
take the printer off line, and then turn off the printer. (The
data dump mode can also be cancelled by sending an INIT
signal from the computer.)
Data Dump Mode
ON LINE
button to
Using the Printer 3-39