Command Group Command Command Description
Status Readback Commands
(Chapter 7)
INQUIRE Requests the current value for a
specified environment variable.
DINQUIRE Requests the default value for a
specified environment variable.
ECHO Returns the <words> portion
of the command to the host
computer.
INFO Requests a specified category of
printer information, such as printer
model number, printer memory
available, configuration, page count,
status, environment variables, and
unsolicited status variables.
USTATUS Allows printer to send unsolicited
status messages for device status
changes, end-of-job status, and
pages printed. Status can be sent
at specified time intervals.
USTATUSOFF Turns off all unsolicited status.
Device Attendance Commands
(Chapter 8)
RDYMSG Specifies a message that replaces
the READY message on the
printer control panel. Does not
affect online state.
OPMSG Displays specified message on
printer control panel and takes
printer offline.
STMSG Displays specified message on
printer control panel and takes
printer offline. If status readback
is enabled, returns name of
the key (ON LINE, CONTINUE,
or RESET) that operator presses
to return the printer online.
3-6 Using PJL
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