B&B Electronics 232MSS2 manual Chart 5. IBM PC DB25 Connector to Ports a D DCE

Chart 5. IBM PC DB25 Connector to Ports A - D (DCE)

Master port configured as a DTE port.

IBM PC
Serial Port		Signal
DB25 Connector	Direction
2	-----------	>
3	<-----------
4	-----------	>
5	<-----------
6	<-----------
7	<---------	>
8	<-----------
20	-----------	>

232MSS2

Ports A - D (DCE)

DB9 Connector

3

2

7

8

6*

5

4*

4*

*Pins are tied together inside the 232MSS2, they are not connected to the master port.

Chart 6. IBM PC DB9 Connector to Ports A - D (DTE)

Master port configured as a DCE port.

IBM PC
Serial Port		Signal
DB9 Connector	Direction
1	<-----------
2	<-----------
3	-----------	>
4	-----------	>
5	<---------	>
6	<-----------
7	-----------	>
8	<-----------

232MSS2

Ports A - D (DTE)

DB9 Connector

4*

3

2

6*

5

4*

8

7

*Pins are tied together inside the 232MSS2, they are not connected to the master port.

B-4 Appendix B Documentation Number 232MSS2-0108 Manual

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