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The following chart provides a description of each of the pins in the parallel connector. A standard parallel data cable provides the required interconnection between the computer and the printer.

 

Parallel Connector Pin Assignments

 

 

Pin No.

Description

 

 

1

The nStrobe printer input has internal 3.3 kW pull-up resistors to 5 V

 

(IOL= 1.5 mA) and is designed to receive a signal driven open collector

 

VOL <= 0.8 V. This pin is a signal from the host computer. The nStrobe

 

input is debounced on a LOW going edge to require an active width

 

greater than 0.5 ms before data is latched.

 

 

2-9

Data inputs have TTL input characteristics with internal 3.3 kW pullups

 

and represent 1 TTL unit load or less. The data inputs are positive logic

 

with a HIGH voltage level corresponding to a logic 1. Pin 2 through Pin

 

9 = D0 through D7 respectively.

 

 

10

The nAck output is an active LOW pulse used to indicate termination.

 

nAck is a driven open collector with a 3.3 kW internal pull-up. The

 

output sinks 7 mA to a VOL <= 0.4 V.

11

The Busy output is active HIGH whenever the printer cannot accept

 

data due to any normal or abnormal condition, including buffer overflow,

 

head open, over temperature, and media error conditions. Busy is a

 

driven open collector with a 3.3 kW internal pull-up. The output sinks 7

 

mA to a VOL <= 0.4 V.

12

The PError signal is active HIGH whenever the printer is out of media or

 

ribbon.

 

 

13

The Select signal function is determined by an additional configuration

 

option which becomes active when the port is present. In the default

 

condition, select is active HIGH whenever the parallel port is powered

 

up and the parallel port is enabled. In the non-default condition, select

 

is active LOW whenever the printer is printing.

 

 

14

nAutoFd (not connected).

 

 

15

Not defined.

 

 

16

Logic Gnd.

 

 

17

FRAME GROUND is at the same potential as Logic Gnd (pin 16).

 

 

18

FUSED 5 V - 1 A maximum.

 

 

19-30

SIGNAL GROUNDS are the Logic Grounds and Returns for all input

 

and output signals.

 

 

31-35

NOT USED - These leads should be left unconnected.

 

 

36

NSelectIn (not connected).

 

 

50

Zebra S-Series User’s Guide

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Zebra Technologies 105Se manual 6LJQDOHVFULSWLRQV, Parallel Connector Pin Assignments