HP 3500 Service Manual - Page 429

@PJL [Enter] LANGUAGE = {PCL/PostScript} [] UEL (universal exit language) This command (also referred to as the universal exit language command) terminates the current printer language and returns control to PJL. It performs the following actions: ● Prints all data received before this command. ● Performs a reset: E in PCL, D in PostScript. ● Turns control over to PJL. This command is also a valid HP-GL/2 terminator. The UEL command must be immediately followed by the "@PJL" command prefix. Characters or control codes other than @PJL (such as or ), enable the default language and process the print job in that language. All jobs must begin and end with the UEL command. Besides entering PJL, the UEL command has the same effect as the E command. However, the E command should always be included to ensure backward compatibility. @PJL COMMENT This command designates the current line as a comment, which is ignored. The syntax is: @PJL COMMENT [] @PJL INFO CONFIG This command solicits a response to describe the installed options and allows the printer to configure the installed options automatically as the applications require. @PJL INFO ID This command identifies the printer type to the host for reference when selecting printer drivers for automatic installation. The command syntax is: @PJL INFO ID @PJL INFO USTATUS This command queries the state of unsolicited JOB status. PAGE and TIMED status are not supported. The syntax is: @PJL INFO USTATUS @PJL INFO PAGECOUNT This command returns the number of pages printed by the engine. ENWW Interface troubleshooting 405