Rs-232 interconnections using a db-25 cable – Zebra Technologies Zebra S Series 105SL User Manual

Page 86

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62

105SL User Guide

6/4/2004 11342L Rev. 8

Data Ports

Serial Data Port

RS-232 Interconnections Using a DB-25 Cable

To connect the printer’s RS-232 DB-9 interface to a DB-25 connector, an interface adapter is
required (part number 3138). A generic DB-25 adapter may also be used, however, the +5
VDC signal source would not be passed through.

Figure 36

illustrates the connections required

for the DB-9 to DB-25 interface.

Figure 36 • DB-9 to DB-25 Connections

Note •

The cable used to connect the printer to a computer must be a null modem (crossover)

cable. If you want to connect the printer to any other DTE devices, you must also use a null
modem cable.

Male DB-9 Adapter

Connector

(plugs into printer)

Female DB-25 Adapter

Connector

(plugs into cable)

NOTE: Pin 1 of DB-9 connector is unused and unterminated.

FG

TXD

RXD

RTS

DSR

SG

DTR

RXD

TXD

DTR

SG

DSR

RTS

CTS

+5 VDC
SIGNAL

2

3

4

5

6

7

8

9

1

2

3

4

6

7

9

20

+5 VDC

SIGNAL

5

CTS

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