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on 2022/05/27 09:34
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1 -(% class="wikigeneratedid" %)
2 - **Contents:**
3 -
4 -{{toc/}}
5 -
6 6  = 1. Introduction =
7 7  
8 8  This article provide the examples for RS485-LN to connect to different type of RS485 sensors.
... ... @@ -11,17 +11,15 @@
11 11  
12 12  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:
13 13  
14 -[[image:image-20220527091852-1.png]]
9 +[[image:https://wiki.dragino.com/images/thumb/5/5c/RS485_01.png/600px-RS485_01.png||height="297" width="534"]]
15 15  
16 16  Connection
17 17  
18 18  
14 +[[image:https://wiki.dragino.com/images/thumb/f/f2/RS485_02.png/600px-RS485_02.png||height="743" width="528"]](% style="display:none" %)
19 19  
20 -[[image:image-20220527091942-2.png]](% style="display:none" %)
21 -
22 22  Connection
23 23  
24 -
25 25  Related documents:
26 26  
27 27  * [[Solar Pump with Dragino>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/Relay_VFD/]] : System Structure
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32 32  
33 33  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:
34 34  
35 -[[image:image-20220527092058-3.png]]
28 +[[image:https://wiki.dragino.com/images/thumb/3/34/RS485_02_1.png/600px-RS485_02_1.png||height="364" width="600"]]
36 36  
37 37  Connection
38 38  
39 39  
40 -[[image:image-20220527092146-4.png]]
33 +[[image:https://wiki.dragino.com/images/thumb/5/5f/RS485_02_2.png/600px-RS485_02_2.png||height="337" width="600"]]
41 41  
42 42  Connection
43 43  
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44 44  * [[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
45 45  * [[Dragino Solution in Farm>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/&file=Dragino%20on%20Farms.pptx]]
46 46  
47 -== ==
48 -
49 49  == 1.3 Example3: Use RS485-LN with energy meters ==
50 50  
51 51  === 1.3.1 OverView ===
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58 58  This example describes a single-phase meter.This is the connection between the RS485-LN and the energy meter.
59 59  )))
60 60  
61 -[[image:image-20220527092419-5.png]]
52 +[[image:https://wiki.dragino.com/images/thumb/f/f4/Meter1.jpg/600px-Meter1.jpg||height="726" width="545"]]
62 62  
63 63  Connection1
64 64  
65 -
66 66  (((
67 67  How to connect with Energy Meter：
68 68  )))
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87 87  Once there is power, the RS485-LN will be on.
88 88  )))
89 89  
90 -[[image:image-20220527092514-6.png]]
80 +[[image:https://wiki.dragino.com/images/thumb/1/15/Meter2.jpg/600px-Meter2.jpg||height="433" width="577"]]
91 91  
92 92  Connection2
93 93  
94 94  
95 -[[image:image-20220527092555-7.png]]
85 +[[image:https://wiki.dragino.com/images/thumb/a/a5/Meter3.jpg/600px-Meter3.jpg||height="712" width="534"]]
96 96  
97 97  Connection3
98 98  
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101 101  
102 102  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.
103 103  
104 -[[image:image-20220527092629-8.png]]
94 +[[image:https://wiki.dragino.com/images/thumb/3/35/Meter4.png/600px-Meter4.png||alt="Meter4.png" height="193" width="600"]]
105 105  
106 -
107 107  (% class="box infomessage" %)
108 108  (((
109 -**Example:** AT+COMMAND1=01 03 00 00 00 01 84 0A
98 +Example:AT+COMMAND1=01 03 00 00 00 01 84 0A
110 110  )))
111 111  
112 112  * The first byte : slave address code (=001～247)
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121 121  
122 122  (% class="box infomessage" %)
123 123  (((
124 -**Example:** RETURN1：01 03 02 08 FD 7E 05
113 +Example:RETURN1：01 03 02 08 FD 7E 05
125 125  )))
126 126  
127 127  * The first byte ARD: slave address code (=001～254)
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131 131  * The 6th and 7th bytes: CRC16 checksum
132 132  * 08 FD is register data. Use short integer 16 bits to convert to decimal, get 2301, then 230.1V is the voltage.
133 133  
134 -(% class="wikigeneratedid" %)
135 -(((
136 -
137 -)))
138 -
139 139  === 1.3.3 How to configure RS485-LN and parse output commands ===
140 140  
141 141  RS485-LN provides two configuration methods: AT COMMAND and DOWNLINK.
142 142  
143 -
144 144  ==== 1.3.3.1 via AT COMMAND: ====
145 145  
146 146  First, we can use **AT+CFGDEV** to get the return value, and we can also judge whether the input parameters are correct.
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149 149  If the configured parameters and commands are incorrect, the return value is not obtained.
150 150  )))
151 151  
152 -[[image:image-20220527092748-9.png]]
135 +[[image:https://wiki.dragino.com/images/b/bc/AT_COMMAND1.png||height="358" width="456"]]
153 153  
154 154  AT COMMAND
155 155  
156 -
157 157  (% class="box infomessage" %)
158 158  (((
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
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
160 160  )))
161 161  
162 162  a: length for the return of AT+COMMAND
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165 165  
166 166  c: define the position for valid value.
167 167  
168 -[[image:image-20220527092936-10.png]]
150 +[[image:https://wiki.dragino.com/images/7/7d/AT_COMMAND2.png||height="278" width="477"]]
169 169  
170 170  AT COMMAND
171 171  
172 -
173 173  PAYLOAD is available after the valid value is intercepted.
174 174  
175 175  
176 -[[image:image-20220527093059-11.png]]
157 +[[image:https://wiki.dragino.com/images/3/3a/AT_COMMAND4.png||height="219" width="576"]]
177 177  
178 178  AT COMMAND
179 179  
180 -
181 181  You can get configured PAYLOAD on TTN.
182 182  
183 -[[image:image-20220527093133-12.png]]
184 184  
164 +[[image:https://wiki.dragino.com/images/thumb/c/c2/AT_COMMAND3.png/600px-AT_COMMAND3.png||height="138" width="600"]]
165 +
185 185  (((
186 186  AT COMMAND
187 187  )))
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230 230  Payload:01 00 02 39 85 08 DC 00 00 00 44
231 231  )))
232 232  
233 -[[image:image-20220527093204-13.png]]
214 +[[image:https://wiki.dragino.com/images/thumb/9/9b/AT_COMMAND10.png/600px-AT_COMMAND10.png||height="278" width="600"]]
234 234  
235 235  AT COMMAND
236 236  
218 +01 is device address,00 02 is the current, 08 DC is the voltage,00 00 00 44 is the total active energy.
237 237  
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.**
239 239  
240 -[[image:image-20220527093251-14.png]]
221 +[[~[~[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]]
241 241  
242 242  AT COMMAND
243 243  
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244 244  
245 245  ==== 1.3.3.2 via LoRaWAN DOWNLINK ====
246 246  
247 -[[image:image-20220527093358-15.png]]
228 +[[image:https://wiki.dragino.com/images/thumb/f/fc/DOWNLINK_METER1.png/600px-DOWNLINK_METER1.png||height="423" width="600"]]
248 248  
249 249  (((
250 250  DOWNLINK
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255 255  )))
256 256  
257 257  (((
258 -**Type Code 0xAF**
239 +Type Code 0xAF
259 259  )))
260 260  
261 261  (((
262 -(% class="box infomessage" %)
263 -(((
264 264  0xAF downlink command can be used to set AT+COMMANDx or AT+DATACUTx.
265 265  )))
266 -)))
267 267  
268 268  (((
269 269  Note: if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.
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375 375  )))
376 376  
377 377  (((
378 - output：01 03 04 00 00 00 42 7A 02
356 + output:01 03 04 00 00 00 42 7A 02
379 379  )))
380 380  
381 381  [[image:https://wiki.dragino.com/images/thumb/b/b3/Usb_meter3.jpg/600px-Usb_meter3.jpg||height="466" width="600"]]
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