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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
2
3
4
5
6
7
8
20
* - 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
1
2
Documentation Number 232BSS4 0812 Manual
Signal
Master Port (DCE)
Direction
DB25 Connector
----------->
(TD)
<-----------
(RD)
----------->
(RTS)
<-----------
(CTS)
<-----------
(DSR) *
<--------->
(GND)
<-----------
(DCD) *
----------->
(DTR) *
Signal
Master Port (DCE)
Direction
DB25 Connector
<-----------
(DCD) *
<-----------
(RD)
Appendix B: Cable Charts
232BSS4
2
3
4
5
6
7
8
20
232BSS4
8
3
B-1
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