HP 5100tn Printer Job Language - Technical Reference Manual - Page 300

Solicited Status Solicited status is printer status information that is specifically requested. For example, the command @PJL INFO ID solicits the printer's ID. The printer responds to solicited status messages as they are received. See "unsolicited status." Status Readback Sending printer status information from the printer to the host computer. Universal Exit Language (UEL) Command A PJL command, understood by all LaserJet personalities, that prompts the active personality to finish processing the current job and exit the personality. PJL also recognizes the UEL command and, when received, PJL discards any unprocessed partial PJL command and prepares to accept the next PJL command. Unsolicited Status Unsolicited status (USTATUS) is printer status information sent as a result of certain printer events occurring, such as when the printer runs out of paper, a job finishes printing, or when a certain time period elapses. There are several types of unsolicited status (DEVICE, JOB, PAGE, and TIMED); unsolicited status must be enabled with the USTATUS command. User Default A user default is a default value that is selectable by way of the operator control panel or the PJL DEFAULT command. Glossary-8