Data Ports 137

Serial Data Port

DB-9 to DB-25 Connections

To connect the print engine’s RS-232 DB-9 interface to a DB-25 connector, an interface adapter is required. A generic DB-25 adapter can be used, although the +5 VDC signal source would not be passed through the adapter. Figure 35 shows the connections required for the DB-9 to DB-25 interface.

Figure 35 • DB-9 to DB-25 Cable Connections

2

 

RXD

 

 

 

 

 

FG

1

 

TXD

 

 

 

 

TXD

3

 

 

 

 

2

 

DTR

 

 

 

RXD

4

 

 

 

 

3

 

SG

 

 

 

 

 

 

 

 

RTS

5

 

 

 

 

 

 

 

 

 

4

 

 

 

 

 

 

 

CTS

 

 

 

 

 

6

 

DSR

 

 

 

 

5

 

 

 

 

DSR

 

RTS

 

 

 

 

6

 

 

 

 

 

7

 

 

 

 

SG

 

 

 

 

 

 

CTS

 

 

 

7

8

 

+5 VDC

 

9

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

9

 

+5 VDC

 

SIGNAL

 

 

 

 

 

 

 

 

 

SIGNAL

 

 

 

DTR

20

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Modem Connection

When the print engine is connected via its RS-232 interface to Data Communication Equipment (DCE) such as a modem, use a standard RS-232 (straight-through) interface cable. Figure 36 shows the connections required for this cable.

Figure 36 • RS-232 Cable Connections

DTE

(Printer)

2

3

4

5

6

7

8

9

 

 

DCE

 

(Modem, etc.)

RXD (receive data)

 

 

 

 

2

 

 

 

 

TXD (transmit data)

 

3

 

 

 

 

DTR (data terminal ready)

 

4

 

 

 

 

SG (signal ground)

 

5

 

 

 

 

DSR (data set ready)

 

6

 

 

 

 

RTS (request to send)

 

7

 

 

 

 

CTS (clear to send)

 

8

 

 

 

 

+5 VDC signal source

 

9

 

 

 

 

 

 

 

 

NOTE: Pin 1 is unused and unterminated at the printer.

6/29/11

110PAX4/R110PAX4 User Guide

57512L-004 Rev. A