User's Manual

C-4 Appendix C 232SS21600 Manual
B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax [phone]
Chart 7. IBM PC DB9 Connector to Ports A - D (DCE)
Master port DTE, Slave port DCE.
Straight Through Connection
IBM PC
Serial Port
DB9 Connector
Signal
Direction
232SS2
Ports A – D (DCE)
DB25 Connector
1 <----------- 8
2 <----------- 3
3 -----------> 2
4 -----------> 20
5 GROUND 7
6 <----------- 6
7 -----------> 4
8 <----------- 5