APPENDICES

Serial Cable Connection for IBM-PC/AT or Compatible Computers and IBM-PS/2 Computers

The following diagrams show the pin connections for the most common serial communications.

■DB-9 Serial Connection

When you use a computer with a 9-pin serial port, use a cable with the following pin configurations.

Printer (Male)

 

 

 

Computer (Female)

SD

2

 

 

 

2

RD

 

 

 

RD

3

 

 

 

3

SD

 

 

 

DR (DSR)

6

 

 

 

4

ER (DTR)

 

 

 

SG

7

 

 

 

5

SG

 

 

 

ER (DTR)

20

 

 

 

6

DR (DSR)

 

 

 

 

 

 

 

8

CS (CTS)

 

 

 

 

■DB-25 Serial Connection

When you use a computer with a 25-pin serial port, use a cable with the following pin configurations.

Printer (Male)

 

 

 

Computer (Female)

FG

1

 

 

 

1

FG

 

 

 

SD

2

 

 

 

3

RD

 

 

 

RD

3

 

 

 

2

SD

 

 

 

DR (DSR)

6

 

 

 

20

ER (DTR)

 

 

 

SG

7

 

 

 

7

SG

 

 

 

ER (DTR)

20

 

 

 

5

CS (CTS)

 

 

 

 

 

 

 

6

DR (DSR)

 

 

 

 

✒Note

Any pins not shown in the figures above are not connected.

A–13