Language Pcl LJ1774.ASC

HP-GL  TO HP-GL/2 COMMAND CHANGES

     
          LEGEND: Ec = [Ctrl] [P] [Esc] in DOS EDIT
     
     There are some commands of the HP-GL language that are
     not available in the HP-GL/2 language for LaserJets,
     because of the differences between the LaserJet
     printers, and HP Plotters.


XT AND YT ( X TICK AND Y TICK )

     This command allows for automatic x- and y-axis tick
     mark printing. It is not available in HP-GL/2 as
     implemented on the LaserJet  printers.


RP ( REPLOT )

     This command allows a plotter to recreate the plot
     image without sending new data to the plotter, (or
     printer). The only way to produce multiple copies on
     the LaserJet running in HP-GL/2 mode is to send a PCL
     copies command before entering HP-GL/2 mode, then at
     the end of the plot file an exit HP-GL/2 command is
     required.
     

PG ( PAGE ADVANCE )

     This is an eject plot command. It has been disabled in
     the LaserJets to allow mixing of HP-GL/2 and PCL
     commands on the same page. The only way to eject a page
     is from PCL mode.  The following commands will cause a
     conditional (if buffer holds data) page eject:
     
     Printer Reset Command         EcE
     Page Size Command             Ec&l#A
     Paper Source Command          Ec&l#H
     Page Length Command           Ec&l#P
     Orientation Command           Ec&l#O
     
     The printer will also unconditionally eject the page if
     a form feed control code character is sent (Decimal
     value 012 in ASCII). A form feed can also be invoked on
     the front panel of the printer if there is data in the
     buffer.
     
     
     
     
            Copyright  Hewlett-Packard Co. 1993
   The information contained herein is subject to change
                      without notice.
   Hewlett-Packard shall not be liable for incidental or
  consequential damages in connection with the use of this
                         material.
     

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