HP LaserJet 5000 HP PCL/PJL reference - Printer Job Language Technical Referen - Page 147

Status Category Description 35 Messages indicating that operator intervention may be required. (35-000 to 35-999) The printer stays online and continues printing, with the potential for reduced capability. Data may be lost. 40 Messages indicating that operator intervention is required. (40-000 to 40-999) Printing halts until the condition is resolved. Examples include paper jam, out of paper, and printer open conditions. 41 This category of messages indicates a foreground paper mount. (41-000 to 41-999) These conditions occur when paper is out and there is no alternate paper source available that is loaded with the correct paper size. The printer is offline under these conditions. 42 and 44 These status codes indicate paper jam errors and their (42-000 to 44-999) associated error codes and control panel display strings. 43 Messages indicating PJL error codes and corresponding control (43-000 to 43-999) panel display strings for optional (external) paper handling devices. 50 Hardware errors. Examples include memory errors and fatal print (50-000 to 50-999) engine errors. Using Unsolicited Device Status The following example enables unsolicited status with the verbose option. The printer response indicates that the printer is open. %-12345X@PJL @PJL USTATUS DEVICE = VERBOSE %-12345X A sample HP LaserJet 4 printer response for unsolicited device status is shown here. For other printers, responses may vary. @PJL USTATUS DEVICE CODE=40021 DISPLAY="12 PRINTER OPEN" ONLINE=FALSE EN Status Readback Commands 7-35