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

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

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Image 30
B&B Electronics 232MSS2 Chart 5. IBM PC DB25 Connector to Ports a D DCE, Chart 6. IBM PC DB9 Connector to Ports a D DTE