Advantech TREK-550-A00E Manual page 34

5.5 RS-232 Connector
RS-232 / RS-485 / J1708 Connector
Pin Signal
1 RS-232 DCD
3 RS-232 TXD
5
RS-232 Ground
7
RS-232 RTS
9
RS-232 RI / +5V / +V12
5.6 RS-232 / RS-485 / J1708 Connector
RS-232 / RS-485 / J1708 Connector
Pin Signal
1 RS-232 RTS9
3 RS-232 TXD9
5
RS-232 Ground
7
RS-485 D+
9
J1708 D+
TREK-550 User Manual
Pin Signal
2 RS-232 RXD
4 RS-232 DTR
6 RS-232 DSR
8 RS-232 CTS
Pin Signal
2 RS-232 RXD9
4 RS-232 CTS9
6 RS-485 D-
8 J1708 D-
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