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PJL
3-54
Status Readback Commands
Applications can request configuration and status information from the printer using
the Status Readback commands. In addition, the printer can also be instructed to send
unsolicited status information back to the host computer when asynchronous events
occur, such as a memory error or a paper jam.
To determine which commands your printer supports, see “Table B-8: Status
Readback Commands” on page B-14.
DINQUIRE Command
This command is used to query the default setting (NVRAM) of the specified
environment variable.
Syntax:
@PJL DINQUIRE [command modifier:value] variable[<CR>]<LF>
Response Syntax:
@PJL DINQUIRE [command modifier:value] variable<CR><LF>
value<CR><LF>
<FF>
where:
[command modifier:value]
The [command modifier:value] parameter specifies the type of PJL variable to
be queried. The variables supported are listed in the tables beginning on
page 3-12.
• A [command modifier:value] parameter is not required for variables listed
in the tables “Common Variables for Both Printer Languages” on page 3-12,
and “Printer Unique Variables for Both Printer Languages” on page 3-19.
• LPARM:PCL is used with variables specific to PCL emulation. (See the tables
“Common Variables for PCL Emulation” on page 3-48, and “Printer Unique
Variables for PCL Emulation” on page 3-49.)