B&B Electronics 232MSS2 manual Chart 7. IBM PC DB9 Connector to Ports a D DCE

Chart 7. IBM PC DB9 Connector to Ports A - D (DCE)

Master port configured as a DTE port.

IBM PC
Serial Port		Signal
DB9 Connector	Direction
1	<-----------
2	<-----------
3	-----------	>
4	-----------	>
5	<---------	>
6	<-----------
7	-----------	>
8	<-----------

232MSS2

Ports A - D (DCE)

DB9 Connector

4*

2

3

4*

5

6*

7

8

*Pins are tied together inside the 232MSS2, they are not connected to the master port.

Chart 8. IBM PC DB25 Connector to Ports A - D (DCE)

Master port configured as a DTE port with a modem connected

(see Chart 3).
IBM PC			232MSS2
Serial Port		Signal	Ports A - D (DCE)
DB25 Connector	Direction		DB9 Connector
2	-----------	>	3
3	<-----------		2
4	-----------	>	6*
5	<-----------		4*
6	<-----------		4*
7	<---------	>	5
8	<-----------		8
20	-----------	>	7

*Pins are tied together inside the 232MSS2, they are not connected to the master port.

Documentation Number 232MSS2-0108 Manual Appendix B B-5

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