Printronix L5020 - Manual (Page 82)

Chapter 3 Printer Configuration
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Power-up State
Power-up state allows you to configure the printer to power up in
the offline or online state. The default setting is Online.
Hex Dump Mode
Hex dump mode allows you to place the printer into the “hex dump”
mode, in which the printer outputs a hexadecimal data stream. The
purpose of hex dump mode is to see exactly what data is received
by the printer, in order to debug forms, for example.
When enabled, the hex dump mode translates all host interface
data to its hexadecimal equivalent, then prints the hex code and its
printable symbol, if one exists. Figure 8 shows a partial example of
a hex dump.
After the printer enters hex dump mode, all characters it prints
(including any in the printer's input buffer) are printed in two forms:
as a two-symbol hexadecimal code, and as the character’s
printable symbol (if it has one). A nonprintable code is printed as a
period [.] symbol. Up to 16 characters can be printed per line of hex
dump printout. While the printer is in hex dump mode, it does not
act upon any control codes, other than to print their hexadecimal
equivalents.
The 16 characters printed per line on the hex dump are formatted
so that the 16 printable symbols are printed in columns 1 through
16. The 17th column is blank. Column 18 contains either a “p” (PI
line active) or a blank (PI not active). Columns 19 and 20 contain
the hexadecimal code for the first character, followed by a blank.
The PI line condition and hexadecimal code for the second
character are printed in columns 22, 23, and 24, followed by a
blank. The third through 16th characters are printed in a similar
manner. The hexadecimal code for the 16th character is printed in
columns 78, 79, and 80.
Subsequent printing observes the current setting for skip-over
perforation, form length, and top-of-form position parameters.