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B-4 Appendix B: Cable Charts Documentation Number 232BSS42907 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 Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445
• - Pins 6, 8, & 20 looped back internally on the
232BSS4
Slave Port Connections:
Chart B.5. Ports A - D (DTE) to DTE (PC) DB25 Connector
232BSS4
Ports A - D (DTE)
DB9 Connector
Signal
Direction
DTE (PC)
Serial Port
DB25 Connector
1 (DCD) * ----------> 8
2 (RD) <---------- 2
3 (TD) ----------> 3
4 (DTR) * ----------> 6
5 (GND) <--------> 7
6 (DSR) * <---------- 20
7 (RTS) ----------> 5
8 (CTS) <---------- 4
* - Pins 1, 4, & 6 looped back internally on the
232BSS4
Chart B.6. Ports A - D (DTE) to DTE (PC) DB9 Connector
232BSS4
Ports A - D (DTE)
DB9 Connector
Signal
Direction
DTE (PC)
Serial Port
DB9 Connector
1 (DCD) * ----------> 1
2 (RD) <---------- 3
3 (TD) ----------> 2
4 (DTR) * ----------> 6
5 (GND) <--------> 5
6 (DSR) * <---------- 4
7 (RTS) ----------> 8
8 (CTS) <---------- 7
• - Pins 1, 4, & 6 looped back internally on the
232BSS4
Chart B.7. Ports A - D (DTE) to DCE (Modem) DB25 Connector
232BSS4
Ports A - D (DTE)
DB9 Connector
Signal
Direction
DCE (Modem)
Serial Port
DB25 Connector