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10	10
11	11	Connection
12	12
	13	+
13	13	[[image:https://wiki.dragino.com/images/thumb/f/f2/RS485_02.png/600px-RS485_02.png||height="743" width="528"]](% style="display:none" %)
14	14
15	15	Connection
...	...	@@ -28,6 +28,7 @@
28	28
29	29	Connection
30	30
	32	+
31	31	[[image:https://wiki.dragino.com/images/thumb/5/5f/RS485_02_2.png/600px-RS485_02_2.png||height="337" width="600"]]
32	32
33	33	Connection
...	...	@@ -51,17 +51,29 @@
51	51
52	52	Connection1
53	53
	56	+(((
54	54	How to connect with Energy Meter：
	58	+)))
55	55
	60	+(((
56	56	Follow the instructions of the electric energy meter to connect the phase line and the neutral line, and then connect 485A+ and 485B- to RS485A and RA485B of RS485-LN respectively.
	62	+)))
57	57
	64	+(((
58	58	The RS485-LN can be powered by 7 ~~ 24V DC power source. Connection as below
	66	+)))
59	59
	68	+(((
60	60	Power Source VIN to RS485-LN VIN+
	70	+)))
61	61
	72	+(((
62	62	Power Source GND to RS485-LN VIN-
	74	+)))
63	63
	76	+(((
64	64	Once there is power, the RS485-LN will be on.
	78	+)))
65	65
66	66	[[image:https://wiki.dragino.com/images/thumb/1/15/Meter2.jpg/600px-Meter2.jpg||height="433" width="577"]]
67	67
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124	124
125	125	(% class="box infomessage" %)
126	126	(((
127		-AT+DATACUTx : This command defines how to handle the return from AT+COMMANDx, max reture length is 40 bytes. AT+DATACUTx=a,b,c
	141	+ AT+DATACUTx : This command defines how to handle the return from AT+COMMANDx, max reture length is 40 bytes. AT+DATACUTx=a,b,c
128	128	)))
129	129
130	130	a: length for the return of AT+COMMAND
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211	211
212	212	==== 1.3.3.2 via LoRaWAN DOWNLINK ====
213	213
214		-[[image:https://wiki.dragino.com/images/thumb/f/fc/DOWNLINK_METER1.png/600px-DOWNLINK_METER1.png||height="423" width="600"]]
	228	+[[image:image-20220512104358-3.png]]
215	215
216	216	(((
217	217	DOWNLINK
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222	222	)))
223	223
224	224	(((
225		-Type Code 0xAF
	239	+**Type Code 0xAF**
226	226	)))
227	227
228	228	(((
	243	+(% class="box infomessage" %)
	244	+(((
229	229	0xAF downlink command can be used to set AT+COMMANDx or AT+DATACUTx.
230	230	)))
	247	+)))
231	231
232	232	(((
233	233	Note: if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.
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339	339	)))
340	340
341	341	(((
342		- output:01 03 04 00 00 00 42 7A 02
	359	+ output：01 03 04 00 00 00 42 7A 02
343	343	)))
344	344
345	345	[[image:https://wiki.dragino.com/images/thumb/b/b3/Usb_meter3.jpg/600px-Usb_meter3.jpg||height="466" width="600"]]
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358	358
359	359	[[image:https://wiki.dragino.com/images/thumb/1/1f/Double_meter3.png/600px-Double_meter3.png||alt="Double meter3.png" height="83" width="600"]]
360	360
361		-Example:These two meters are examples of setting parameters and device addresses.
	378	+**Example**:These two meters are examples of setting parameters and device addresses.
362	362
363		-[[image:https://wiki.dragino.com/images/thumb/e/ee/Double_meter1.jpg/600px-Double_meter1.jpg||alt="Double meter1.jpg" height="800" width="600"]]
	380	+[[image:https://wiki.dragino.com/images/thumb/e/ee/Double_meter1.jpg/600px-Double_meter1.jpg||alt="Double meter1.jpg" height="737" width="553"]]
364	364
365	365	[[image:https://wiki.dragino.com/images/thumb/7/72/Double_meter2.jpg/600px-Double_meter2.jpg||alt="Double meter2.jpg" height="733" width="550"]]
366	366
367	367	(((
	385	+(((
368	368	First of all, since the default device address of the energy meter is 01, the configuration of two energy meters will conflict, so we first connect an energy meter and configure the device address.
369	369	)))
	388	+)))
370	370
371	371	(((
	391	+(((
372	372	We can use AT+CFGDEV to set the device address.
373	373	)))
	394	+)))
374	374
375	375	(((
	397	+(((
376	376	We modify the device address 01 of the first energy meter to 02.
377	377	)))
	400	+)))
378	378
379	379	[[image:https://wiki.dragino.com/images/6/6b/Double_meter4.png||alt="Double meter4.png" height="141" width="456"]]
380	380

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