Remember About Environments; Pjl Environment Variables - Brother HL-Series Technical Reference Manual

Revision C 16/01/96

Remember about environments

Remember the following points when you use PJL to set the printer to a desired state.
1. The current feature settings are the same as the control panel values ( or values in the remote printer
console program) when beginning a PJL job.
2. The current feature settings (Modified Print Environment) become the same as the PJL Current
Environment when the printer enters a printer language. The feature settings are modified by the
printer language command once a printer language is started. All other settings are overridden by
printer language commands.
3. The SET command changes the PJL Current Environment settings. These settings are effective until
the next PJL reset condition.
4. The Control Panel, the remote printer console program or the DEFAULT command changes the
User Default Environment (= Control Panel settings or remote printer console program settings)
5. Printer language commands change the Modified Print Environment. These settings are effective
during a printer language job. The PJL Current Environment settings are loaded into the Modified
Print Environment by a printer language specific reset, for example, ESC E for PCL.
6. Always use the PJL RESET command after a job is completed if the SET command is used in the
PJL job.

PJL environment variables

This section lists the PJL environment variables. There are two kinds of PJL environment variables,
General PJL environment variables and Printer language -specific variables. For all variables except the
read-only variables, value settings can be modified using @PJL SET, @PJL RESET, @PJL
DEFAULT, and @PJL INITIALIZE.
Using the @ PJL INQUIRE and @ PJL DINQUIRE, you can request value settings for the printer
features. For the details of these commands, see the next section.
NOTE:
1. Use PJL commands only when no printer language commands are available for a desired feature.
2. When setting printer features with PJL, use the SET and RESET commands when you want to affect
the current PJL job only.
If you want to affect more than the current job, use the DEFAULT and INITIALIZE commands.
3. Supported valuables varies according to your printer mode.
Chapter 3 "PJL" - 19