4-2
Chapter 4: Appendix B Connectors/ Pinouts
Echo
User's Manual, ver. 0.00
Appendix B: Connectors/Pinouts
Appendix B outlines the pinouts for the following:
Echo
cable connector pinouts
Echo external connector box pinouts
Cable Connector Pinouts
Table 5:
DB-9 pinout
s
- Echo
Pin No.
RS-232
Signal
RS-485
Signal
1 DCD
RxD
B(+)
2 RxD
TxD
B(+)
3 TxD
TxD
A(-)
4 DTR
RxD
A(-)
5 SG SR
6 Reserved
CTS
A(-)
7 RTS
RTS
A(-)
8 CTS
RTS
B(+)
9 Reserved
CTS
B(+)
Male DB-9 Connector
1
5
6
9
Technical Tip:
Please ensure that you terminate the DCD or CTS signals if your
application does not use them. The common way to do this is to
connect DCD to DTR and/or to connect CTS to RTS. Failure to
do so may result in a loss of a performance on your Echo
adapter.