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User’s Manual
ECM-3711 Series User’s Manual
33
2.4.7 Serial Port Connector in RS-422 Mode (JCOM2)
Signal PIN PIN Signal
GND 10 9 GND
RxD- 8 7 NC
TxD+ 6 5 GND
NC 4 3 NC
RxD+ 2 1 TxD-
2.4.8 Serial Port Connector in RS-485 Mode (JCOM2)
Signal PIN PIN Signal
GND 10 9 GND
NC 8 7 NC
DATA+ 6 5 GND
NC 4 3 NC
NC 2 1 DATA-