Appendix A: Specifications
388
RS-232 Pin/signal definition
Pin No.
Signal
Direction
Description
1 DCD
Input
Data
2
RxD
Input
Receive data (data in)
3 TxD
Output
Transmit
data
4
DTR
Output
Data terminal ready
5 GND
―
Signal
ground
6
DSR
Input
Data set ready
7
RTS
Output
Request to send
8
CTS
Input
Clear to send
9 RI Input
Ring
indicator
Sensor RJ-12 Port Pinouts
RJ-12 Pin/signal definition
Pin No.
Signal
Direction
Description
1 +12V
―
Power
(500mA, fuse protected)
2 GND
―
Signal
Ground
3
―
―
―
4
―
―
―
5 GND
―
Signal
Ground
6 1-wire
Used for Feature Port