Epson 1000, 1500 A-10Technical Specifications

Signal	Return	Signal	Direction	Description
Pin	Pin
10	28	ACKNLG	OUT	About a 10-microsecond
				pulse. LOW indicates data
				has been received and
				that the printer is ready to
				accept more data.
11	29	BUSY	OUT	A HIGH signal indicates
				that the printer cannot
				receive data. The signal
				goes HIGH in the following
				cases:
				0 During data entry
				(for each character)
				0 During printing
				0 During off-line state
				Q During printer-error state
12	30	PE	OUT	A HIGH signal indicates
				that the printer is out of
				paper.
13	-	SLCT	OUT	Pulled up to +5V through
				3.3 K ohm resistance.
14	-		IN	During the LOW state, the
		AUTOFEED
				paper is automatically
				fed one line after printing.
				(The signal level can be
				fixed using SelecType.)
15	-	NC	-	Not used.
16	-	GND	-	Logic ground level.
17	-	CHASSIS	-	Printer’s chassis ground,
		GND		which is isolated from the
				logic ground.
18	-	NC	-	Not used.
19-30	-	GND	-	Twisted-pair return signal
				ground level.

A-10 Technical Specifications