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

A-54 Product-Specific Feature Support EN
Printer Status Readback
Because the DeskJet 1600C and 1600CM do not support USTATUS
or INFO, only the requested status information will come back from
the printer.
Commands That Affect Printer Memory
Three conditions may cause the printer to reconfigure user memory:
• When the printer language changes, either explicitly by using
the ENTER command, or implicitly.
• When the page protection setting changes, either using the
SET, DEFAULT, or RESET commands.
• When the resolution is changed using either the SET or
DEFAULT commands.
Reconfiguring printer memory may erase all volatile
personality-specific resource information, including downloaded fonts,
PCL macros, and PostScript dictionaries (however no I/O data is lost).
Memory can be reconfigured only when these conditions actually
change the page protection, resolution, or printer language status.
For example, if the resolution is at 600 dpi and an application sends
the @PJL SET RESOLUTION = 600 command, memory is not
reconfigured.
Variables Not Stored in NVRAM
COPIES PAGEPROTECT
FORMLINES PAPER
MEDIASOURCE PRINTQUALITY
MEDIATYPE RENDERMODE
ORIENTATION RESOLUTION
Printers that support printer status readback:
HP DeskJet 1600C, 1600M
Printers affected by memory reconfiguration:
HP DeskJet 1600C, 1600M