RS-232 Baud Rate Converter Product Manual

232BRC-3903 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 [phone]
B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph [phone] – Fax [phone]
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-3903 Manual
B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax [phone]
B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph [phone] – Fax [phone]
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)