Epson 1000, 1500 Technical Specifications A-11

Signal	Return	I	Signal	I	Direction	I	Description
Pin	Pin
31							When this signal goes
							LOW, the printer controller
							ignores the STROBE signal.
32	-				OUT		This level goes LOW when
			ERROR
							the printer is:
							0 out of paper
							0 in error state
							0 off line
33	-						Same as for Pins 19 - 30.
34							Not used.
35			+5V		-		Pulled up to +5V through
							3.3 Kohm resistance.
36	-				IN		The DC 1/DC3 control
			SLCTIN
							codes are valid only
							when this signal is HIGH
							(SLCTIN	set to OFF). This
							setting can be changed
							with SelecType.

Note:

Cl All interface conditions are based on TTL level. Both the rise and fall of each signal must be less than 0.2 microseconds.

0Data transfer must be carried out by observing the ACKNLG or BUSY signal. (Data transfer to this printer can be carried out only after the receipt of the ACKNLG signal or when the level of the BUSY signal is LOW.)

0The column heading ‘Direction’ refers to the direction of signal flow as viewed from the printer.

0‘Return’ denotes the twisted-pair return to be connected at signal ground level. For the interface wiring, be sure to use a twisted-pair cable for each signal and to complete the connection on the return side.

0The ACKNLG pulse width varies or is permanently set to HIGH, depending on the setting of the BUSY DELAY option in SelecType Level 2.

Technical Specifications A-11