HP 2500 HP PCL/PJL reference - Printer Job Language Technical Reference Manual - Page 277

Resource Saving None of the DeskJet 1200C or 1600C printer families support resource saving. Printer Specific Job Boundaries Printers that support printer specific job boundaries: HP DeskJet 1200C, 1200CM, 1600C, 1600CM Unlike the LaserJet 4 family of printers, no implicit PJL job boundaries are recognized. There are no additional conditions which will cause the User Default Environment values to be loaded into the PJL Current Environment, or (subsequently) to be loaded into the Modified Print Environment. Timeouts Printers that support printer timeouts: HP DeskJet 1600C, 1600CM These printers have a timeout capability which is used to recover when jobs are interrupted by situations such as host failures. The timeout duration varies depending on the data received by the printer. The TIMEOUT variable set using PJL establishes the I/O timeout durations to wait before switching to another pending I/O. If the printer has not received printable data, it will wait for the TIMEOUT duration before closing the current job and switching to another pending I/O. If the printer has received printable data and is waiting for more data, the printer uses an extended timeout duration, which is equal to five minutes or ten times the TIMEOUT value, whichever is greatest. EN Product-Specific Feature Support A-55