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Parallel data communications – Zebra Technologies Z6M User Manual

Page 99

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Zebra Z4M/Z6M Printers User’s Guide

91

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Table 7 illustrates the pin connections on the bi-directional parallel connector at the
rear of the printer.

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The 8-bit parallel data interface supports IEEE 1284 bi-directional parallel
communications in “nibble mode.” The parallel interface provides a means of
communication that is typically faster than the previously mentioned serial interface
methods. In this method, the bits of data that make up a character are sent all at one
time over several wires in the cable, one bit per wire.

Parallel Cabling Requirements

An IEEE-1284 compatible bi-directional parallel data cable is required when this
communication method is used. The required cable must have a standard 36-pin
parallel connector on one end that is plugged into the mating connector located at the
rear of the printer. The other end of the cable connects to the printer connector at the
host computer.

Table 7

Pin No.

Description

1

nStrobe/HostClk

2-9

Data Bits 1-8

10

nAck/PtrClk

11

Busy/PtrBusy

12

PError/AckDataReq

13

Select/Xflag

14

nAutoFd/HostBusy

15

Not used

16 and 17

Ground

18

+5v @1A

19-30

Ground

31

ninit

32

nFault/nDataAvail

33 and 34

Not used

35

+5v through a 3.3 KW resistor

36

nSelectin/1284 active