电源端子
Pin1
0V
Pin2
DC24V
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COM1/COM3
Pin1
Rx-(B)
Pin2
RxD_PLC (COM1 RS232)
Pin3
TxD_PLC(COM1 RS232)
Pin4
Tx-
Pin5
GND
Pin6
Rx+(A)
Pin7
RxD_PLC(COM3 RS232)
Pin8
TXD_PLC(COM3 RS232)
Pin9
Tx+
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