Epson 8900 Series - Manual (Page 22)

Printer Setup 2-9
Automatic Carriage Return
This parameter is similar to the automatic LF parameter but is turned
on for software that does not send a CR command at the end of each
print line. If the printer advances from print line to print line but fails
to perform a carriage return operation, you need to turn on the
automatic CR parameter. The default setting is NO.
Slashed Zeros
When on, this parameter causes the printer to print slashes over all
zeros to distinguish them from the letter O. The default setting is NO.
Hexadecimal Dump Mode
The hexadecimal dump (HEXDUMP) mode causes the printer to
print the ASCII (hexadecimal) codes for all text characters, control
characters, and escape-sequence commands it receives. The resulting
printout can be useful as a troubleshooting device or in analyzing a
block of data and commands sent from the host computer.
The printer does not respond to any control characters or commands
except when the printer is using the serial or option port and FLOW
CONTROL is set to ETX/ACK; in such a case, the printer interprets
and responds to an ETX control character as an end-of-text command.
The ETX character is also included as part of the hex dump.
Note: Chapter 3 describes ASCII codes and control characters;
Chapters 5 and 6 describe the escape-sequence commands for the
TI 855 emulation mode.