B&B Electronics RS-232 Baud Rate Converter CE 232BRC User Manual
Page 11
232BRC-1005 Manual
Appendix A: Cable Charts
A-1
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 – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91 792444 – Fax +353 91 792445
Appendix A: Cable Charts
All charts give full pinouts. Only pins 2 & 3 are required for basic
operation. Pins 7 and 8 are needed for hardware (RTS/CTS)
handshaking. If the connected device requires DTR or DSR, these
signals are available on pins 4 and 6 respectively. See Appendix B
for a block diagram of the 232BRC.
Port A Connections
Chart A.1. DTE (PC) DB9 Connector to Port A (DCE)
DTE (PC)
Serial Port
DB9 Connector
Signal
Direction
232BRC
Port A (DCE)
DB9F Connector
2 <-----------
2
(RD)
3 ----------->
3
(TD)
4 ----------->
4
(DTR)
5 <--------->
5
(GND)
6 <-----------
6
(DSR)
7 ----------->
7
(RTS)
8 <-----------
8
(CTS)
Chart A.2. DTE (PC) DB25 Connector to Port A (DCE)
DTE (PC)
Serial Port
DB25 Connector
Signal
Direction
232BRC
Port A (DCE)
DB9F Connector
2 ----------->
3
(TD)
3 <-----------
2
(RD)
4 ----------->
7
(RTS)
5 <----------
8
(CTS)
6 <----------
6
(DSR)
7 <--------->
5
(GND)
20 ----------->
4
(DTR)
A-2
Appendix A: Cable Charts
232BRC-1005 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 – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91 792444 – Fax +353 91 792445
Chart A.3. DCE (Modem) DB9 Connector to Port A (DCE)
DCE (Modem)
Serial Port
DB9 Connector
Signal
Direction
232BRC
Port A (DCE)
DB9F Connector
2 ----------->
3
(TD)
3 <-----------
2
(RD)
4 <-----------
6
(DSR)
5 <--------->
5
(GND)
6 ---------->
4
(DTR)
7 <-----------
8
(CTS)
8 ----------->
7
(RTS)
Chart A.4. DCE (Modem) DB25 Connector to Port A (DCE)
DCE (Modem)
Serial Port
DB25 Connector
Signal
Direction
232BRC
Port A (DCE)
DB9F Connector
2 <-----------
2
(RD)
3 ----------->
3
(TD)
4 <-----------
8
(CTS)
5 ---------->
7
(RTS)
6 ---------->
4
(DTR)
7 <---------->
5
(GND)
20 <-----------
6
(DSR)
Port B Connections
Chart A.5. DCE (Modem) DB9 Connector to Port B (DTE)
DCE (Modem)
Serial Port
DB9 Connector
Signal
Direction
232BRC
Port B (DTE)
DB9M Connector
2 ----------->
2
(RD)
3 <-----------
3
(TD)
4 <-----------
4
(DTR)
5 <--------->
5
(GND)
6 ----------->
6
(DSR)
7 <-----------
7
(RTS)
8 ----------->
8
(CTS)