B&B Electronics manual Chart 3. Modem DB25 Connector to Master Port, Async Modem 232D4SS8

Chart 3. Modem DB25 Connector to Master Port

Master port configured as a DTE port.

Async Modem			232D4SS8
Serial Port		Signal	Master Port (DTE)
DB25 Connector	Direction		DB25 Connector
2	<-----------		2
3	-----------	>	3
4	<-----------		4
5	-----------	>	5
7	<---------	>	7
8	-----------	>	8*
20	<-----------		20

*Pins 6 & 8 are tied together inside the 232D4SS8 and share the same input.

NOTE: When using chart 3 above and connecting a DTE device to ports A - H of the smart switch, refer to Charts 7 and 8.

Chart 4. DCE Device w/DB25 Connector to Ports A - H (DTE)

Master port configured as a DCE port.

DCE Device			232D4SS8
Serial Port		Signal	Ports A - H (DTE)
DB25 Connector	Direction		DB25 Connector
2	<-----------		2
3	-----------	>	3
4	<-----------		4
5	----------	>	5
6	----------	>	6*
7	<---------	>	7
8	-----------	>	8*
20	<-----------		20

*Pins 6 & 8 are tied together inside the 232D4SS8 and share the same input.

B-2 Appendix B 232D4SS84502 Manual

B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104 B&B Electronics Ltd – Westlink Comm. Pk – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445