beautypg.com

Appendix b: cable charts, Hart, Db25 – B&B Electronics 232BSS4 - Manual User Manual

Page 37: Onnector to, Aster

background image

Documentation Number 232BSS4 0812 Manual

Appendix B: Cable Charts

B-1

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

Appendix B: Cable Charts


All charts give full pin outs. Only pins 2 & 3 are required for basic

operation. Handshaking pins are needed for hardware (RTS/CTS)
handshaking or if DTR is to be used to signal the Master port to accept
commands. See Appendix C for a block diagram of the 232BSS4.

Master Port Connections:

Chart B.1. DTE (PC) DB25 Connector to Master Port

DTE (PC)

Serial Port

DB25 Connector

Signal

Direction

232BSS4

Master Port (DCE)

DB25 Connector

2

----------->

2

(TD)

3

<-----------

3

(RD)

4

----------->

4

(RTS)

5

<-----------

5

(CTS)

6

<-----------

6

(DSR) *

7

<--------->

7

(GND)

8

<-----------

8

(DCD) *

20

----------->

20

(DTR) *

* - Pins 6, 8, & 20 looped back internally on the 232BSS4

Chart B.2. DTE (PC) DB9 Connector to Master Port

DTE (PC)

Serial Port

DB9 Connector

Signal

Direction

232BSS4

Master Port (DCE)

DB25 Connector

1

<-----------

8

(DCD) *