Lexmark C762 - Manual (Page 161)

PJL
3-82
Unique PJL Commands
To determine which commands your printer supports, see “Table B-16: Lexmark
Unique PJL Commands” on page B-32.
LBEEP Command
This command causes the printer to beep three times.
Syntax:
@PJL LBEEP[<CR>]<LF>
LPORTROTATE Command
This command causes the printer to rotate ports at the next job boundary. The
information to rotate ports is specified in the job header. For example, the printer could
switch from parallel interface to serial interface between jobs.
Syntax:
@PJL LPORTROTATE[<CR>]<LF>