Chapter 2 Extended I/F Specification Signal Logic The following lists the signal logic. 2 1 Assert while 20 msec, or until asserted “Printer error” signal (#15). 2 Enable to change assert logic by command. 17 Pin No. Signal Input-Output (From printer) Signal Logic Low High-Z 1 Pause IN Assert while 20 msec *1, 2 Signal level:
Level/ Pulse 2 Reserved IN - - 3 Reserved OUT - - 4 GND GND - - 5 GND GND - - 6 GND GND - - 7 GND GND - - 8 GND GND - - 9 OPEN - - - 10 GND GND - - 11 Paper out OUT Paper out *2/ Paper remaining *2 12 Ink cartridge OUT Replace ink cartridge or Ink low *2/ With ink left *2 13 Paper back feed OUT Back feeding *2/ No back feeding *2 14 Print end OUT Feeding paper *2 or Continuous printing end *2 / No feeding paper *2 Signal level: Level/ Pulse (20 msec) 15 Printer error OUT Error *2/ No error *2