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	1	+(% class="wikigeneratedid" %)
	2	+ **Contents:**
	3	+
	4	+{{toc/}}
	5	+
1	1	= 1. Introduction =
2	2
3	3	This article provide the examples for RS485-LN to connect to different type of RS485 sensors.
...	...	@@ -6,14 +6,17 @@
6	6
7	7	This instruction is provided by Xavier Florensa Berenguer from [[NORIA GRUPO DE COMPRAS>>url:http://www.gruponovelec.com/]]. It is to show how to use RS485-LN to connect to Relay and VFD and communicate with Mobile. The structure is like below:
8	8
9		-[[image:https://wiki.dragino.com/images/thumb/5/5c/RS485_01.png/600px-RS485_01.png||height="297" width="534"]]
	14	+[[image:image-20220527091852-1.png]]
10	10
11	11	Connection
12	12
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
	19	+
	20	+[[image:image-20220527091942-2.png]](% style="display:none" %)
	21	+
15	15	Connection
16	16
	24	+
17	17	Related documents:
18	18
19	19	* [[Solar Pump with Dragino>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/Relay_VFD/]] : System Structure
...	...	@@ -24,17 +24,20 @@
24	24
25	25	This instruction is provided by Xavier Florensa Berenguer from [[NORIA GRUPO DE COMPRAS>>url:http://www.gruponovelec.com/]]. It is to show how to use RS485-LN to connect to Pulse Counter and communicate with Mobile. This example and example 2 compose the structure for a farm IoT solution. The structure is like below:
26	26
27		-[[image:https://wiki.dragino.com/images/thumb/3/34/RS485_02_1.png/600px-RS485_02_1.png||height="364" width="600"]]
	35	+[[image:image-20220527092058-3.png]]
28	28
29	29	Connection
30	30
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
	40	+[[image:image-20220527092146-4.png]]
	41	+
33	33	Connection
34	34
35	35	* [[Pickdata MIO40 water pulse counter to LoRa with Dragino RS485-LN>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/Pulse-Counter/]] : Configure Document
36	36	* [[Dragino Solution in Farm>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/&file=Dragino%20on%20Farms.pptx]]
37	37
	47	+== ==
	48	+
38	38	== 1.3 Example3: Use RS485-LN with energy meters ==
39	39
40	40	=== 1.3.1 OverView ===
...	...	@@ -47,28 +47,41 @@
47	47	This example describes a single-phase meter.This is the connection between the RS485-LN and the energy meter.
48	48	)))
49	49
50		-[[image:https://wiki.dragino.com/images/thumb/f/f4/Meter1.jpg/600px-Meter1.jpg||height="726" width="545"]]
	61	+[[image:image-20220527092419-5.png]]
51	51
52	52	Connection1
53	53
	65	+
	66	+(((
54	54	How to connect with Energy Meter：
	68	+)))
55	55
	70	+(((
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.
	72	+)))
57	57
	74	+(((
58	58	The RS485-LN can be powered by 7 ~~ 24V DC power source. Connection as below
	76	+)))
59	59
	78	+(((
60	60	Power Source VIN to RS485-LN VIN+
	80	+)))
61	61
	82	+(((
62	62	Power Source GND to RS485-LN VIN-
	84	+)))
63	63
	86	+(((
64	64	Once there is power, the RS485-LN will be on.
	88	+)))
65	65
66		-[[image:https://wiki.dragino.com/images/thumb/1/15/Meter2.jpg/600px-Meter2.jpg||height="433" width="577"]]
	90	+[[image:image-20220527092514-6.png]]
67	67
68	68	Connection2
69	69
70	70
71		-[[image:https://wiki.dragino.com/images/thumb/a/a5/Meter3.jpg/600px-Meter3.jpg||height="763" width="573"]]
	95	+[[image:image-20220527092555-7.png]]
72	72
73	73	Connection3
74	74
...	...	@@ -77,11 +77,12 @@
77	77
78	78	If the user needs to read the parameters of the electric energy meter and use the modbus command,please refer to the appendix of the MODBUS communication protocol in the user manual of the energy meter.
79	79
80		-[[image:https://wiki.dragino.com/images/thumb/3/35/Meter4.png/600px-Meter4.png||alt="Meter4.png" height="193" width="600"]]
	104	+[[image:image-20220527092629-8.png]]
81	81
	106	+
82	82	(% class="box infomessage" %)
83	83	(((
84		-Example:AT+COMMAND1=01 03 00 00 00 01 84 0A
	109	+**Example:** AT+COMMAND1=01 03 00 00 00 01 84 0A
85	85	)))
86	86
87	87	* The first byte : slave address code (=001～247)
...	...	@@ -96,7 +96,7 @@
96	96
97	97	(% class="box infomessage" %)
98	98	(((
99		-Example:RETURN1：01 03 02 08 FD 7E 05
	124	+**Example:** RETURN1：01 03 02 08 FD 7E 05
100	100	)))
101	101
102	102	* The first byte ARD: slave address code (=001～254)
...	...	@@ -106,10 +106,16 @@
106	106	* The 6th and 7th bytes: CRC16 checksum
107	107	* 08 FD is register data. Use short integer 16 bits to convert to decimal, get 2301, then 230.1V is the voltage.
108	108
	134	+(% class="wikigeneratedid" %)
	135	+(((
	136	+
	137	+)))
	138	+
109	109	=== 1.3.3 How to configure RS485-LN and parse output commands ===
110	110
111	111	RS485-LN provides two configuration methods: AT COMMAND and DOWNLINK.
112	112
	143	+
113	113	==== 1.3.3.1 via AT COMMAND: ====
114	114
115	115	First, we can use **AT+CFGDEV** to get the return value, and we can also judge whether the input parameters are correct.
...	...	@@ -118,13 +118,14 @@
118	118	If the configured parameters and commands are incorrect, the return value is not obtained.
119	119	)))
120	120
121		-[[image:https://wiki.dragino.com/images/b/bc/AT_COMMAND1.png||height="358" width="456"]]
	152	+[[image:image-20220527092748-9.png]]
122	122
123	123	AT COMMAND
124	124
	156	+
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
	159	+ 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
...	...	@@ -133,27 +133,32 @@
133	133
134	134	c: define the position for valid value.
135	135
136		-[[image:https://wiki.dragino.com/images/7/7d/AT_COMMAND2.png||height="278" width="477"]]
	168	+[[image:image-20220527092936-10.png]]
137	137
138	138	AT COMMAND
139	139
	172	+
140	140	PAYLOAD is available after the valid value is intercepted.
141	141
142	142
143		-[[image:https://wiki.dragino.com/images/3/3a/AT_COMMAND4.png||height="219" width="576"]]
	176	+[[image:image-20220527093059-11.png]]
144	144
145	145	AT COMMAND
146	146
	180	+
147	147	You can get configured PAYLOAD on TTN.
148	148
	183	+[[image:image-20220527093133-12.png]]
149	149
150		-[[image:https://wiki.dragino.com/images/thumb/c/c2/AT_COMMAND3.png/600px-AT_COMMAND3.png||height="138" width="600"]]
151		-
152	152	(((
153	153	AT COMMAND
154	154	)))
155	155
156	156	(((
	190	+
	191	+)))
	192	+
	193	+(((
157	157	**Example**: CMD1:Read current data with MODBUS command. address:0x03 AT+COMMAND1= 01 03 00 03 00 01,1
158	158	)))
159	159
...	...	@@ -193,14 +193,14 @@
193	193	Payload:01 00 02 39 85 08 DC 00 00 00 44
194	194	)))
195	195
196		-[[image:https://wiki.dragino.com/images/thumb/9/9b/AT_COMMAND10.png/600px-AT_COMMAND10.png||height="278" width="600"]]
	233	+[[image:image-20220527093204-13.png]]
197	197
198	198	AT COMMAND
199	199
200		-01 is device address,00 02 is the current, 08 DC is the voltage,00 00 00 44 is the total active energy.
201	201
	238	+(% style="color:#4f81bd" %)**01 is device address,00 02 is the current, 08 DC is the voltage,00 00 00 44 is the total active energy.**
202	202
203		-[[~[~[image:https://wiki.dragino.com/images/thumb/b/b8/AT_COMMAND11.png/600px-AT_COMMAND11.png~|~|height="271" width="600"~]~]>>url:https://wiki.dragino.com/index.php/File:AT_COMMAND11.png]]
	240	+[[image:image-20220527093251-14.png]]
204	204
205	205	AT COMMAND
206	206
...	...	@@ -207,7 +207,7 @@
207	207
208	208	==== 1.3.3.2 via LoRaWAN DOWNLINK ====
209	209
210		-[[image:https://wiki.dragino.com/images/thumb/f/fc/DOWNLINK_METER1.png/600px-DOWNLINK_METER1.png||height="423" width="600"]]
	247	+[[image:image-20220527093358-15.png]]
211	211
212	212	(((
213	213	DOWNLINK
...	...	@@ -218,12 +218,15 @@
218	218	)))
219	219
220	220	(((
221		-Type Code 0xAF
	258	+**Type Code 0xAF**
222	222	)))
223	223
224	224	(((
	262	+(% class="box infomessage" %)
	263	+(((
225	225	0xAF downlink command can be used to set AT+COMMANDx or AT+DATACUTx.
226	226	)))
	266	+)))
227	227
228	228	(((
229	229	Note: if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.
...	...	@@ -269,84 +269,123 @@
269	269	AF 03 01 06 0A 05 00 04 00 01 00: Same as AT+COMMAND3=0A 05 00 04 00 01,1
270	270	)))
271	271
272		-[[image:https://wiki.dragino.com/images/thumb/4/45/DOWNLINK_METER2.png/600px-DOWNLINK_METER2.png||height="208" width="600"]]
	312	+[[image:image-20220527093430-16.png]]
273	273
274	274	DOWNLINK
275	275
276	276
277		-[[~[~[image:https://wiki.dragino.com/images/thumb/2/20/DOWNLINK_METER3.png/600px-DOWNLINK_METER3.png~|~|height="105" width="600"~]~]>>url:https://wiki.dragino.com/index.php/File:DOWNLINK_METER3.png]]
	317	+[[image:image-20220527093508-17.png]]
278	278
279	279	DOWNLINK
280	280
281	281
282		-[[image:https://wiki.dragino.com/images/thumb/2/27/DOWNLINK_METER4.png/600px-DOWNLINK_METER4.png||height="210" width="600"]]
	322	+[[image:image-20220527093530-18.png]]
283	283
284	284	DOWNLINK
285	285
286	286
287		-[[~[~[image:https://wiki.dragino.com/images/thumb/3/39/DOWNLINK_METER5.png/600px-DOWNLINK_METER5.png~|~|height="176" width="600"~]~]>>url:https://wiki.dragino.com/index.php/File:DOWNLINK_METER5.png]]
	327	+[[image:image-20220527093607-19.png]]
288	288
289	289	DOWNLINK
290	290
291		-[[image:https://wiki.dragino.com/images/thumb/a/a2/DOWNLINK_METER6.png/600px-DOWNLINK_METER6.png||height="365" width="600"]]
292	292
	332	+[[image:image-20220527093628-20.png]]
	333	+
293	293	DOWNLINK
294	294
295	295
296	296	=== 1.3.4 How to configure and output commands for RS485 to USB ===
297	297
	339	+(((
298	298	This step is not necessary, it is just to show how to use a normal RS485 to USB adapter to connect to the meter to check the input and output. This can be used to test the connection and RS485 command of the meter without RS485-LN.
	341	+)))
299	299
	343	+(((
300	300	First, connect the A+ and A- of the USB to the 485 A and 485 B of the energy meter.
	345	+)))
301	301
	347	+(((
302	302	Open the serial port debugging, set the send and receive to HEX.
	349	+)))
303	303
	351	+(((
304	304	Baud rate: 9600
	353	+)))
305	305
	355	+(((
306	306	check digit: Even
	357	+)))
307	307
308		-[[image:https://wiki.dragino.com/images/thumb/8/8f/Usb_meter2.jpg/600px-Usb_meter2.jpg||height="800" width="600"]]
	359	+[[image:image-20220527093708-21.png]]
309	309
310	310	USB
311	311
312		-[[image:https://wiki.dragino.com/images/thumb/6/62/Usb_meter1.jpg/600px-Usb_meter1.jpg||height="800" width="600"]]
313	313
	364	+[[image:image-20220527093747-22.png]]
	365	+
314	314	USB
315	315
	368	+
	369	+(((
316	316	The configuration command is consistent with the AT command, input the hexadecimal command directly into the serial port, and the serial port will output the command.
	371	+)))
317	317
318		-Example:input：01 03 00 31 00 02 95 c4
	373	+(((
	374	+**Example:**  input：01 03 00 31 00 02 95 c4
	375	+)))
319	319
320		-{{{ output:01 03 04 00 00 00 42 7A 02
321		-}}}
	377	+(((
	378	+ output：01 03 04 00 00 00 42 7A 02
	379	+)))
322	322
323		-[[image:https://wiki.dragino.com/images/thumb/b/b3/Usb_meter3.jpg/600px-Usb_meter3.jpg||height="466" width="600"]]
	381	+[[image:image-20220527093821-23.png]]
324	324
325	325	USB
326	326
	385	+
327	327	=== 1.3.5 How to configure multiple devices and modify device addresses ===
328	328
329	329	If users need to read the parameters of multiple energy meters, they need to modify the device address, because the default device address of each energy meter is 01.
330	330
	390	+(((
	391	+(((
331	331	Set the device address according to the parameters in the appendix of the MODBUS communication protocol.
	393	+)))
	394	+)))
332	332
333		-[[image:https://wiki.dragino.com/images/thumb/1/1f/Double_meter3.png/600px-Double_meter3.png||alt="Double meter3.png" height="83" width="600"]]
	396	+[[image:image-20220527093849-24.png]]
334	334
335		-Example:These two meters are examples of setting parameters and device addresses.
336	336
337		-[[image:https://wiki.dragino.com/images/thumb/e/ee/Double_meter1.jpg/600px-Double_meter1.jpg||alt="Double meter1.jpg" height="800" width="600"]]
	399	+**Example**:These two meters are examples of setting parameters and device addresses.
338	338
339		-[[image:https://wiki.dragino.com/images/thumb/7/72/Double_meter2.jpg/600px-Double_meter2.jpg||alt="Double meter2.jpg" height="800" width="600"]]
	401	+[[image:image-20220527093950-25.png]]
340	340
	403	+[[image:image-20220527094028-26.png]]
	404	+
	405	+(((
	406	+(((
341	341	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.
	408	+)))
	409	+)))
342	342
	411	+(((
	412	+(((
343	343	We can use AT+CFGDEV to set the device address.
	414	+)))
	415	+)))
344	344
	417	+(((
	418	+(((
345	345	We modify the device address 01 of the first energy meter to 02.
	420	+)))
	421	+)))
346	346
347		-[[image:https://wiki.dragino.com/images/6/6b/Double_meter4.png||alt="Double meter4.png" height="141" width="456"]]
	423	+[[image:image-20220527094100-27.png]]
348	348
349		-AT+CFGDEV:01 10 00 61 00 01 02 00 02,1
	425	+(% class="box infomessage" %)
	426	+(((
	427	+**AT+CFGDEV:01 10 00 61 00 01 02 00 02,1**
	428	+)))
350	350
351	351	* 01:device adaress
352	352
...	...	@@ -368,15 +368,17 @@
368	368
369	369	Its default device address is 01, and the following are the parameters for configuring two energy meters.
370	370
371		-[[image:https://wiki.dragino.com/images/1/13/Meter11.png||alt="Meter11.png" height="576" width="379"]]
	450	+[[image:image-20220527094150-28.png]]
372	372
373		-[[image:https://wiki.dragino.com/images/thumb/7/7e/Meter12.png/600px-Meter12.png||alt="Meter12.png" height="262" width="600"]]
374	374
	453	+[[image:image-20220527094224-29.png]]
	454	+
375	375	PAYLOAD:01 08 DF 43 62
376	376
377	377	* 08 DF is the valid value of the meter with device address 02.
378	378	* 43 62 is the valid value of the meter with device address 01.
379	379
	460	+
380	380	== 1.4 Example 4: Circuit Breaker Remote Open Close ==
381	381
382	382	This instruction is provided by Xavier Florensa Berenguer from [[NORIA GRUPO DE COMPRAS>>url:http://www.gruponovelec.com/]]. It is to show how to use RS485-LN to connect to SCHNEIDER SMART and Monitor and control your cabinet remotely with no wires and with Dragino RS485-LN LoRaWAN technology. The structure is like below:

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