Pjl Environment Variables - HP Color LaserJet 5500 Technical Reference Manual

PJL Environment
Variables
6-10 Environment Commands
This section lists the PJL environment variables. General PJL
environment variables (those not printer language-specific)
are listed first, followed by printer language-specific variables.
For most variables except the read-only variables, value
settings can be modified using the following commands:
SET — sets PJL Current Environment settings that
remain active until the next PJL reset condition.
RESET — the PJL RESET command defaults the
PJL Current Environment to the User Default
Environment (feature settings set with the DEFAULT
command or the control panel keys).
DEFAULT — modifies the User Default settings (stored
in NVRAM in those printers containing NVRAM).
INITIALIZE — defaults all environments to the Factory
Default settings.
You can request value settings for printer features using
the following two commands:
INQUIRE — requests the PJL Current Environment
settings.
DINQUIRE — requests the User Default (control panel)
settings.
(The INQUIRE and DINQUIRE commands are discussed in
Chapter 7.)
Note
Whenever possible, use printer language commands to set
printer features. Use PJL commands only when there are no
printer language commands available for a desired feature.
When setting printer features with PJL, use the SET and
RESET commands if you want to affect the current PJL job
only. Using the DEFAULT and INITIALIZE commands
affects the current job and succeeding jobs (these commands
should only be used when you require a command that
affects more than just the current job).