B-2
Appendix B
Documentation Number 232MSS2-0108 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
All charts will indicate if the Master Port of the 232MSS2 should
be configured as a DCE port or a DTE port. Refer to the Port
Configuration section of the manual for information on Master Port
configurations.
Chart 1. IBM PC DB25 Connector to Master Port
* Pins are tied together inside the 232MSS2, they are not
connected to ports A, B, C, or D.
Chart 2. IBM PC DB9 Connector to Master Port
* Pins are tied together inside the 232MSS2, they are not
connected to ports A, B, C, or D.
IBM PC
Serial Port
DB25 Connector
Signal
Direction
232MSS2
Master Port (DCE)
DB25 Connector
2 -----------> 2
3 <----------- 3
4 -----------> 4
5 <----------- 5
6 <----------- 6*
7 <---------> 7
8 <----------- 8
20 -----------> 20*
IBM PC
Serial Port
DB9 Connector
Signal
Direction
232MSS2
Master Port (DCE)
DB25 Connector
1 <----------- 8
2 <----------- 3
3 -----------> 2
4 -----------> 20*
5 <---------> 7
6 <----------- 6*
7 -----------> 4
8 <----------- 5
