HP 3330mfp HP PCL/PJL reference - Printer Job Language Technical Reference Man - Page 207
Spooler Examples, presses the On Line, Continue, Job
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Spoolers equipped for bi-directional communications can monitor printer status using the following commands: ECHO STMSG USTATUSOFF USTATUS PAGE USTATUS JOB To synchronize status readback information. The application should send an ECHO command before any other status readback commands; all status responses before the returned ECHO response should be discarded to ensure proper synchronization. To display a customized message and take the printer off-line until the operator presses the On Line, Continue, Job Cancel, or Reset key. Returns the name of the key that the operator pressed. To turn off all unsolicited status before specifying the desired USTATUS. To receive notification as each page lands in the output tray. To monitor job progress. Sends status message when job has completed. Spooler Examples The following examples show jobs used by spooling applications: • Jobs that monitor job progress and confirm job completion • Jobs that notify the user to load specific forms or paper • Jobs that control printer resources and print selected pages • Jobs that print a banner page followed by an application- generated job (application specifies printer language) • Jobs that print a banner page followed by an application- generated job (application does not specify printer language) In each example, the indented lines indicate commands belonging to a print file created by another application. EN Programming Tips for Using PJL 11-13