Moxa Technologies NE-4100 user manual Serial Header Pinouts J1 for NE-4120S

NE-4100 Series User’s Manual Panel Layout and Pin Assignments

Pin Assignments

Serial Header Pinouts (J1) for NE-4120S

NC	10	9	NC
CTS0	8	7	RTS0
DSR0	6	5	GND
DTR0	4	3	TxD0
RxD0	2	1	DCD0

Serial Header Pinouts (J1) for NE-4120A

NC	10	9	NC
NC	8	7	NC
NC	6	5	GND
RxD-	4	3	RxD+
TxD+	2	1	TxD-

NOTE The symbols “B” and “A” are often used in place of “+” and “-”, respectively.

NOTE For 2-wire RS-485 interface, pin 3 is for Data+ (B) and pin 4 is for Data- (A).

Ethernet Header Pinouts (J3) for NE-4120S/A

Tx+ Tx-

Rx+ Rx-

1

2

3

4

5

DIO and LED Header Pinouts (J2) for NE-4120S/A

GND 14 13 VCC(+5V)

GND 12 11 VCC(+5V)

DIO0 10 9 10M_LED

DIO1 8 7 100M_LED

DIO2 6 5 Ready_LED

DIO3 4 3 Reset

TxD1 2 1 RxD1

2-10