Table of Contents5 Interfaces............................................................ 125Overview...............................................................................................125RS-232 Serial Interface ........................................................................127USB ......................................................................................................128Centronics Parallel Interface.................................................................129Centronics Parallel Interface Signals .............................................130IEEE 1284 Parallel Interface.................................................................131Compatibility Mode.........................................................................131Nibble Mode ...................................................................................131Byte Mode ......................................................................................131Signals ...........................................................................................132Ethernet ................................................................................................1346 Reprogramming the Security Key....................... 135Reprogramming the Security Key.........................................................135How to Program the Security Key ..................................................1357 Downloading Firmware....................................... 137Firmware File Types (.prg) and (.exe) ..................................................138WebPanel Download ............................................................................139Automatic Download (.exe)...................................................................142Manual Two-Key Download Sequence.................................................144Manual Three-Key Download Sequence ..............................................145Sending Firmware in Download Mode..................................................146Sending Firmware via Ethernet (FTP)............................................146Sending Firmware via USB ............................................................147Sending Firmware via Parallel........................................................152Sending Firmware via Serial ..........................................................153Downloading Files to the Main File System..........................................153Filename Extensions Not Shown in Menus ..........................................154WebPanel File Download .....................................................................155PTX_SETUP Download........................................................................157Manual Two-Key Download..................................................................157Downloading Files to the SD Card........................................................158Demo Facility ........................................................................................158Downloading a Demo File ..............................................................158Configuring the Printer to run a Demo File.....................................159Starting a Demo File ......................................................................159Pausing a Demo File ......................................................................159Stopping a Demo File.....................................................................159Deleting a Demo File......................................................................160