B&B Electronics 232MSS2 - page 32

B-6 Appendix B Documentation Number 232MSS2-0108 Manual
B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104
B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445
Chart 9. IBM PC DB9 Connector to Ports A - D (DCE)
Master port configured as a DTE port with a modem
connected (see Chart 3).
IBM PC
Serial Port
DB9 Connector
Signal
Direction
232MSS2
Ports A - D (DCE)
DB9 Connector
3 -----------> 3
2 <----------- 2
7 -----------> 6*
8 <----------- 4*
6 <----------- 4*
5 <---------> 5
1 <----------- 8
4 -----------> 7
* Pins are tied together inside the 232MSS2, they are not
connected to the master port.