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Appendix, Printer interface technical information, Serial data communications – Zebra Technologies Z6M User Manual

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Zebra Z4M/Z6M Printers User’s Guide

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Table 6 illustrates the pin connections on the DB-25 connector at the rear of the
printer.

Table 6

Pin No.

Description

1

Chassis ground

2

TXD (transmit data) output from the printer

3

RXD (receive data) input to the printer

4

RTS (request to send) output from the printer

5

Not used

6

DSR (data set ready) input to the printer

7

RS-232 signal ground

8

Not used

9

+5v @ 1A source

10

Not used

11

RS-485 signal ground

12

Not used

13

RS-485 input A(-)

14

RS-485 output A(-)

15

Not used

16

RS-485 input B(+)

17 and 18

Not used

19

RS-485 output B(+)

20

DTR (data terminal ready) output from the printer

21-25

Not used