Lexmark X644e User Guide

Your printer responds to a Ctrl+T (x'14') status query on an interface by sending a
one-line status message back to the host computer over the same interface. If the 
status query is received between print jobs and the printer is idle with no error 
conditions, an idle response is returned to the host computer.

Status messages are bracketed by the characters 

%%[

 and 

]%%

, so the computer 

software can extract them from other data generated by the current print job. They 
follow a standard syntax, consisting of one or more key-value pairs, separated by 
semicolons. For example:

%%[

 job: Project Report; status: busy; source: Parallel 

]%%

The following table lists the possible keys and value descriptions.

To determine which status message keys your printer supports, see Table C-7 on 
page C-22.

job

The name of the print job, as stored in the JobName entry in statusdict. This 
field is omitted if the current print job has no defined JobName.

status

Printer activity at the time the message is sent:

Idle

No job in progress

Busy

Executing a PostScript emulation program and/or printing 
pages

Waiting

I/O wait in mid-job

Initializing

During startup

Not ready

Printer menus display or 

 displays.

source

Source of the job the server is executing:

Serial
Parallel
Network
USB
LocalTalk
Infrared
Internal

This field is omitted if the server is idle.