HP PCL/PJL reference - Printer Job Language Technical Reference Manual

7-16 Status Readback Commands EN
INFO Command
The INFO command requests a specified category of information
(see table below). Use this command to find the printer model,
configuration, memory available, page count, status information, PJL
file system information, and a list of the printer variables, including
environmental, printer language-dependent, and unsolicited status
variables.
Syntax:
@PJL INFO category [<CR>]<LF>
Response Syntax:
@PJL INFO category<CR><LF>
[1 or more lines of printable characters or <WS>
followed by <CR><LF>]
<FF>
Parameters:
Category Description
ID Provides the printer model number, such as
“LaserJet 4.”
CONFIG Provides configuration information, such as how
many and which paper sizes are available in this
printer.
FILESYS Returns PJL file system information.
MEMORY Identifies amount of memory available.
PAGECOUNT Returns the number of pages printed by the
print engine.
STATUS Provides the current printer status.
VARIABLES Lists environmental and printer
language-dependent variables, the possible
variable values, and the current variable
settings.
USTATUS Lists the unsolicited status variables provided by
the printer, the possible variable values, and the
current variable settings.