B&B Electronics 232BSS4 - Chart B.3. DCE (Modem) DB25 Connector to Master Port; Chart B.4. DCE (Modem) DB9 Connector to Master Port; Serial Port

Documentation Number 232BSS4 0812 Manual Appendix B: Cable Charts B-3
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 B.3. DCE (Modem) DB25 Connector to Master Port
DCE (Modem)
Serial Port
DB25 Connector
Signal
Direction
232BSS4
Master Port (DCE)
DB25 Connector
2
<-----------
3
(RD)
3
----------->
2
(TD)
4
<-----------
5
(CTS)
5
----------->
4
(RTS)
6
----------->
20
(DTR) *
7
<--------->
7
(GND)
20
<-----------
6
(DSR) *
- Pins 6, 8, & 20 looped back internally on the
232BSS4
Chart B.4. DCE (Modem) DB9 Connector to Master Port
DCE (Modem)
Serial Port
DB9 Connector
Signal
Direction
232BSS4
Master Port (DCE)
DB25 Connector
2
----------->
2
(TD)
3
<-----------
3
(RD)
4
<-----------
6
(DSR) *
5
<--------->
7
(GND)
6
----------->
20
(DTR) *
7
<-----------
5
(CTS)
8
----------->
4
(RTS)