Epson ActionPrinter 4500 User Manual - Page 245
Technical Specifications 8-9, Specifications
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Interface Specifications Signal Pin 13 14 15 16 17 18 19-30 31 32 33 34 35 Return Pin 16 - Signal SLCT Direction OUT AUTO IN FEED XT NC - GND - CHASSIS GND NC - GND INIT IN ERROR OUT GND - NC OUT Description Pulled up to + 5 volts through 3.3 Kohm resistance. When this signal is LOW, the paper is automatically fed 1 line after printing. (The signal level can be fixed to this by setting DIP switch 2-4 to on.) Not used. Logic ground level. Printer's chassis ground, which is isolated from the logic ground. Not used. Twisted-pair return signal ground level. When this level becomes LOW, the printer controller is reset to its power-up state and the print buffer is cleared. This level is normally HIGH; its pulse width must be more than 50 microseconds at the receiving terminal. This level becomes LOW when the printer is: 1) in paper out state. 2) off line. 3) in error state. Same as for Pins 19-30. Not used. Pulled up to 5V through 3.3 Kohm 36 SLCT IN IN The DC1/DC3 code is valid only when this signal is HIGH. (Internal fixing can be carried out with Jumper J10. The level of this signal is factory-set to LOW.) Technical Specifications 8-9