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NS4 serial data ⇌ Ethernet data conversion Serial port to Ethernet module

[Introduction]：NS4 is an Ethernet serial server module that realizes serial data ⇌ Ethernet data conversion; it has a variety of Modbus gateway modes and TCP/DUP/MQTT/HTTP IoT gateway modes, which can meet the networking functions of various serial devices/PLCs. The module adopts LCC package, which is convenient for user equipment to be integrated on the PCB board.

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No.	Pin Functional	Description
1	GND	Common ground terminal, power supply negative terminal input;
2	NC	default floating;
3	NC	default floating;
4	NC	default floating;
5	NC	default floating;
6	NC	default floating;
7	GND	Common ground terminal, power supply negative terminal input;
8	GND	Common ground terminal, power supply negative terminal input;
9	GND	Common ground terminal, power supply negative terminal input;
10	GND	Common ground terminal, power supply negative terminal input;
11	NC	default floating;
12	NC	default floating;
13	NC	default floating;
14	NC	default floating;
15	TXD2	The serial port sends data, only supports 3.3V TTL, if it is connected to 5V, level conversion is required;
16	RXD2	The serial port receives data, only supports 3.3V TTL, if it is connected to 5V, level conversion is required;
17	NC	default floating;
18	NC	default floating;
19	GND	Common ground terminal, power supply negative terminal input;
20	GND	Common ground terminal, power supply negative terminal input;
21	VCC	Positive power input, supports 3-5.5V input, can be used with pin 22 at the same time;
22	VCC	Positive power input, support 3-5.5V input; can be used with pin 21 at the same time;
23	NC	default floating;
24	NC	default floating;
25	NC	default floating;
26	NC	default floating;
27	NC	default floating;
28	NC	default floating;
29	NC	default floating;
30	NC	default floating;
31	NC	default floating;
32	NC	default floating;
33	485EN-2	Serial port 2 RS485 enable pin, normally low, pulled high when sending data
34	NC	default floating;
35	NC	default floating;
36	485EN-1	Serial port 1RS485 enable pin, normally low, pulled high when sending data
37	NC	default floating;
38	NC	default floating;
39	NC	default floating;
40	NC	default floating;
41	SPDLED	Network port data indicator
42	LINKLED	Network port connection indicator
43	RX+	Ethernet receives RX+ signal;
44	RX-	Ethernet receives RX-signal;
45	TX+	Ethernet sends TX+ signal;
46	TX-	Ethernet sends TX-signal;
47	RESTORE	Reset pin, pull down for more than 5 seconds to take effect
48	TXD1	The serial port sends data, only supports 3.3V TTL, if it is connected to 5V, level conversion is required;
49	RXD1	The serial port receives data, only supports 3.3V TTL, if it is connected to 5V, level conversion is required;
50	NC	default floating;
51	NC	default floating;
52	NC	default floating;
53	3.3V	Can output voltage 3.3V;
54	GND	Common ground terminal, power supply negative terminal input;
55	NC	default floating;
56	NC	default floating;
57	NC	default floating;
58	NC	default floating;
59	NRST	Module reset, pull down for more than 1ms to take effect
60	NET	Network connection indicator, output 2S square wave if the connection is successful
60	NET	If the connection is unsuccessful, output a 1S rectangular wave, pull it high for 0.9S, and pull it low for 0.1S
61	NC	default floating;
62	NC	default floating
63	NC	default floating;
64	NC	default floating;
65	LINK1	Serial port 1 data link indicator, UDP mode output low level;
65	LINK1	In other modes, if the connection is successful, the output will be low level, and if there is no connection, the output will be high level;
66	DATA1	Serial port 1 data indicator pin, output 50ms square wave when there is data interaction;
67	LINK2	Serial port 2 data link indicator, UDP mode output low level;
67	LINK2	In other modes, if the connection is successful, the output will be low level, and if there is no connection, the output will be high level;
68	DATA2	Serial port 2 data indicator pin, output 50ms square wave when there is data interaction;
69	NC	default floating;
70	NC	default floating;
71	NC	default floating;
72	NC	default floating;