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Chapter 8 Appendix
Port Specification
LAN port specification
8-pin modular connector (RJ-45)
1 2 3 4 5 6 7 8
pin No.
1
2
3
4
5
6
7
8
Serial port specification
D sub 9-pin connector (RS-232C)
Pin No.
1
2
3
4
5
6
7
8
9
102
Signal
(not used)
(not used)
(not used)
(not used)
5
4
3
2
1
9
8
7
6
Signal
RXD
TXD
DTR
Ground
DSR
RTS
CTS
(not used)
TX+
TX-
RD+
RD-
CD
Function
Transfer data (+)
Transfer data (-)
Receive data (+)
Receive data (-)
Function
Carrier detection
Receive data
Transfer data
Data terminal ready
Ground
Data set ready
Request to send
Clear to send
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