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APPENDIX
WMP-153 User’s manual
48
J47
– External COM1 Connector
Pin #
Signal Description
RS-232
RS-422
RS-485
1
Carrier Detect
Transmit Data -
Transmit Data -
2
Receive Data
Transmit Data +
Transmit Data +
3
Transmit Data
Receive Data +
NC
4
Data Terminal Ready
Receive Data -
NC
5
Ground
NC
NC
6
Data Set Ready
NC
NC
7
Request to Send
NC
NC
8
Clear to Send
NC
NC
9
Ring Indicator
NC
NC