B&B Electronics Port Expander 232PE - Manual (Page 18)

A-4 Appendix A 232PE3095 Manual
B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350
PH (815) 433-5100 -- FAX (815) 434-7094
Chart 5. IBM PC DB25 Connector to Ports A - D (DTE)
Master port of 232XSS configured as a DCE port.
IBM PC
Serial Port
DB25 Connector
Signal
Direction
232PE
Ports A - D (DTE)
DB25 Connector
2 -----------> 3
3 <----------- 2
4 -----------> 5
5 <---------- 4
6 <---------- 6*
7 <---------> 7
8 <----------- 8*
20 -----------> 20
* Pins are tied together inside the 232PE and share the same
input.
Chart 6. IBM PC DB9 Connector to Ports A - D (DTE)
Master port of 232XSS configured as a DCE port.
IBM PC
Serial Port
DB9 Connector
Signal
Direction
232PE
Ports A - D (DTE)
DB25 Connector
2 <----------- 2
3 -----------> 3
4 -----------> 6*
5 <---------> 7
6 <----------- 20
7 -----------> 5
8 <----------- 4
* Pins 6 & 8 are tied together inside the 232PE and share the
same input.