APPENDICES
Appendix–13
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
8
DR (DSR)
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
6
CS (CTS)
DR (DSR)
✒
Note
Any pins not shown in the figures above are not connected.