Star Micronics SP317 user manual Connectors and Signals Parallel Interface

APPENDIX

Connectors and Signals (Parallel Interface)

Pin No.	Signal	IN/OUT	Function
	Name
1		IN	Signals when data is ready to be read. Signal goes
	STROBE
			from HIGH to LOW (for at least 0.5 microsec.)
			when the data is available.
2-9	DATA1-8	IN	These signals provide the information of the first
			to eighth bits of parallel data. Each signal is at
			HIGH level for a logical 1 and at a LOW level for
			a logical 0.
10		OUT	A 9 microsecond LOW pulse acknowledges re-
	ACK
			ceipt of the data.
11	BUSY	OUT	When this signal goes to LOW, the printer is
			ready to accept data. When the printer is in one of
			the conditions below, “HIGH” is set.
			1. Data is being entered.
			2. Off line.
			3. Error condition.
12	PAPER	OUT	This signal is normally LOW. It will go to HIGH
	OUT		if the printer runs out of paper.
13	SELECTED	OUT	This signal is HIGH when the printer is online.
14-15	N/C		Unused
16	SIGNAL		Signal ground.
	GND
17	CHASSIS		Chassis ground, isolated from logic ground.
	GND
18	+5VDC		+5VDC (Max 50 mA)
19-30	GND		Twisted pair return the signal to ground level.
31		IN	When this signal goes to LOW, the printer is reset
	RESET
			to its power-on condition.
32		OUT	This signal is normally HIGH. This signal goes to
	ERROR
			LOW to signal that the printer cannot print due to
			an error condition.
33	EXT GND		External ground.
34	COMPULSION	OUT	Compulsion signal
35	N/C	–	Unused.
36	–	–	This signal is normally set to HIGH on the printer side.

This connector mates with an Amphenol 57-30360 connector

Parallel interface connector (printer side)

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