Star Micronics LC-500 user manual Parallel Interface, Connector Signals, Name, Function

Parallel Interface

Connector Signals

Pin						Name		Function
								Goes low for ≥ 0.5∝ s when active.
1		STROBE
2		DATA0						These signals represent information for the 1st
3		DATA1
								through 8th bit of parallel data, respectively. Each
4		DATA2
								signal is HIGH when data is logical 1, and LOW
5		DATA3
								when logical 0.
6		DATA4
7		DATA5
8		DATA6
9		DATA7
								10∝ s low to acknowledge receipt of data.
10						ACK
11					BUSY			Printer sets line low when ready to receive data.
12			PAPER					High when paper runs out.
13		SELECT						High when printer is on-line.
14					AFXT			This signal is used when the mode is nibble mode.
15								Not used.
16	SIGNAL GND							Signal ground
17		CHASSIS						Chassis ground (isolated from signal ground)
18							+5V	+5V DC output from printer
19~30						GND		Twisted pair ground return
31								Printer is reset when this signal goes low.
					RESET
32								Low when printing cannot continue due to error.
				ERROR
33		EXT GND						External ground
34~35								Not used
36		SELECT IN						This signal is used when the mode is nibble mode.

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