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

7-10 Status Readback Commands EN
DINQUIRE Command
The DINQUIRE command is used to obtain the default value of a
specified PJL environment variable. Use the DINQUIRE command to
find the User Default Environment setting for any environment
variable, including read-only variables.
Syntax:
@PJL DINQUIRE [LPARM : personality |
~IPARM : port] variable [<CR>]<LF>
Response Syntax:
@PJL DINQUIRE [LPARM:personality |
~IPARM:port] variable <CR><LF>
value<CR><LF>
<FF>
LPARM : personalityThis optional parameter is used to
inquire about printer language-specific environment variables.
For example, you can use this option to request the default
PCL pitch setting.
PCL is a valid personality. Other personalities, such as
POSTSCRIPT, can be added as hardware options. Use the
@PJL INFO CONFIG command to request the personalities
installed in a particular printer.
IPARM : port — This optional parameter is used to set
port-specific variables. The HP LaserJet 4PJ is the only printer
which supports port-specific variables.
The IPARM : port option must be used when setting
port-specific variables. Valid values for port for the HP
LaserJet 4PJ printer are SERIAL and PARALLEL.
variable This parameter specifies the environment variable
about which you are inquiring. For example, the DINQUIRE
DENSITY command requests the default toner density setting.
See Appendix A for a list of valid variables for each printer. If
you require a more detailed description of a particular variable,
see the “Environment Variables” section in Chapter 6.