INQUIRE Command The INQUIRE command is used to obtain the current value
of a specified PJL environment variable, including read-only
variables. Use the INQUIRE command to find out the
setting for a particular PJL feature, such as
ORIENTATION.
Syntax: @PJL INQUIRE [LPARM :
personality
|
~IPARM :
port
] variable [<CR>]<LF>
Response Syntax: @PJL INQUIRE [LPARM:
personality
|
~IPARM:
port
] variable <CR><LF>
value
<CR><LF>
<FF>
LPARM : personality — This optional parameter is
used to inquire about printer language-specific
environment variables. For example, you can use this
option to request the current PCL symbol set stored in
the PJL Current Environment.
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 you want. For example, the INQUIRE RET
command requests the current value of the Resolution
Enhancement technology feature. 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.
7-4 Status Readback Commands
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