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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 +11,14 @@
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  
13 +[[image:https://wiki.dragino.com/images/thumb/f/f2/RS485_02.png/600px-RS485_02.png||height="743" width="528"]](% style="display:none" %)
18 18  
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
... ... @@ -28,26 +28,21 @@
28 28  * [[Configure Manual>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/Relay_VFD/]] : Explanation on how to integrate to Node-red and to the Mobile Phone, and with link to the Github code.
29 29  * [[Video Demo>>url:https://www.youtube.com/watch?v=TAFZ5eaf-MY&t=6s&ab_channel=XavierFlorensaBerenguer]]
30 30  
31 -
32 32  == 1.2 Example 2: Connect to Pulse Counter ==
33 33  
34 34  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:
35 35  
36 -[[image:image-20220527092058-3.png]]
27 +[[image:https://wiki.dragino.com/images/thumb/3/34/RS485_02_1.png/600px-RS485_02_1.png||height="364" width="600"]]
37 37  
38 38  Connection
39 39  
31 +[[image:https://wiki.dragino.com/images/thumb/5/5f/RS485_02_2.png/600px-RS485_02_2.png||height="337" width="600"]]
40 40  
41 -[[image:image-20220527092146-4.png]]
42 -
43 43  Connection
44 44  
45 45  * [[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
46 46  * [[Dragino Solution in Farm>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/&file=Dragino%20on%20Farms.pptx]]
47 47  
48 -(% class="wikigeneratedid" %)
49 -== ==
50 -
51 51  == 1.3 Example3: Use RS485-LN with energy meters ==
52 52  
53 53  === 1.3.1 OverView ===
... ... @@ -60,41 +60,28 @@
60 60  This example describes a single-phase meter.This is the connection between the RS485-LN and the energy meter.
61 61  )))
62 62  
63 -[[image:image-20220527092419-5.png]]
50 +[[image:https://wiki.dragino.com/images/thumb/f/f4/Meter1.jpg/600px-Meter1.jpg||height="726" width="545"]]
64 64  
65 65  Connection1
66 66  
67 -
68 -(((
69 69  How to connect with Energy Meter：
70 -)))
71 71  
72 -(((
73 73  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.
74 -)))
75 75  
76 -(((
77 77  The RS485-LN can be powered by 7 ~~ 24V DC power source. Connection as below
78 -)))
79 79  
80 -(((
81 81  Power Source VIN to RS485-LN VIN+
82 -)))
83 83  
84 -(((
85 85  Power Source GND to RS485-LN VIN-
86 -)))
87 87  
88 -(((
89 89  Once there is power, the RS485-LN will be on.
90 -)))
91 91  
92 -[[image:image-20220527092514-6.png]]
66 +[[image:https://wiki.dragino.com/images/thumb/1/15/Meter2.jpg/600px-Meter2.jpg||height="433" width="577"]]
93 93  
94 94  Connection2
95 95  
70 +[[image:https://wiki.dragino.com/images/thumb/a/a5/Meter3.jpg/600px-Meter3.jpg||height="800" width="600"]]
96 96  
97 -
98 98  Connection3
99 99  
100 100  
... ... @@ -115,9 +115,7 @@
115 115  * 5th and 6th bytes: Number of registers to read
116 116  * 7th and 8th bytes: CRC16 checksum from bytes 1 to 6.
117 117  
118 -(((
119 119  How to parse the reading of the return command of the parameter：
120 -)))
121 121  
122 122  (% class="box infomessage" %)
123 123  (((
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145 145  
146 146  [[image:https://wiki.dragino.com/images/b/bc/AT_COMMAND1.png||height="358" width="456"]]
147 147  
148 -AT COMMAND
120 +**AT COMMAND**
149 149  
150 150  (% class="box infomessage" %)
151 151  (((
152 - AT+DATACUTx : This command defines how to handle the return from AT+COMMANDx, max reture length is 40 bytes. AT+DATACUTx=a,b,c
124 +AT+DATACUTx : This command defines how to handle the return from AT+COMMANDx, max reture length is 40 bytes. AT+DATACUTx=a,b,c
153 153  )))
154 154  
155 155  a: length for the return of AT+COMMAND
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174 174  
175 175  [[image:https://wiki.dragino.com/images/thumb/c/c2/AT_COMMAND3.png/600px-AT_COMMAND3.png||height="138" width="600"]]
176 176  
177 -(((
178 178  AT COMMAND
179 -)))
180 180  
181 -(((
182 -
183 -)))
184 -
185 -(((
186 186  **Example**: CMD1:Read current data with MODBUS command. address:0x03 AT+COMMAND1= 01 03 00 03 00 01,1
187 -)))
188 188  
189 -(((
190 190  RETURN1:01 03 02 00 02 39 85 00 00(return data)
191 -)))
192 192  
193 -(((
194 194  AT+DATACUT1:9,1,4+5+6+7 Take the return value 00 02 39 85 as the valid value of reading current data and used to splice payload.
195 -)))
196 196  
197 -(((
198 198  CMD2:Read voltage data with MODBUS command. address:0x00 AT+COMMAND2= 01 03 00 00 00 01,1
199 -)))
200 200  
201 -(((
202 202  RETURN2:01 03 02 08 DC BE 1D(return data)
203 -)))
204 204  
205 -(((
206 206  AT+DATACUT2:7,1,4+5 Take the return value 08 DC as the valid value of reading voltage data and used to splice payload.
207 -)))
208 208  
209 -(((
210 210  CMD3:Read total active energy data with MODBUS command. address:0x0031 AT+COMMAND3= 01 03 00 31 00 02,1
211 -)))
212 212  
213 -(((
214 214  RETURN3:01 03 04 00 00 00 44 FA 00(return data)
215 -)))
216 216  
217 -(((
218 218  AT+DATACUT3:9,1,4+5+6+7 Take the return value 00 00 00 44 as the valid value of reading total active energy data and used to splice payload.
219 -)))
220 220  
221 -(((
222 222  Payload:01 00 02 39 85 08 DC 00 00 00 44
223 -)))
224 224  
225 225  [[image:https://wiki.dragino.com/images/thumb/9/9b/AT_COMMAND10.png/600px-AT_COMMAND10.png||height="278" width="600"]]
226 226  
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236 236  
237 237  ==== 1.3.3.2 via LoRaWAN DOWNLINK ====
238 238  
239 -[[image:image-20220512104358-3.png]]
185 +[[image:https://wiki.dragino.com/images/thumb/f/fc/DOWNLINK_METER1.png/600px-DOWNLINK_METER1.png||height="423" width="600"]]
240 240  
241 241  (((
242 242  DOWNLINK
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247 247  )))
248 248  
249 249  (((
250 -**Type Code 0xAF**
196 +Type Code 0xAF
251 251  )))
252 252  
253 253  (((
254 -(% class="box infomessage" %)
255 -(((
256 256  0xAF downlink command can be used to set AT+COMMANDx or AT+DATACUTx.
257 257  )))
258 -)))
259 259  
260 260  (((
261 261  Note: if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.
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320 320  
321 321  DOWNLINK
322 322  
323 -
324 324  [[image:https://wiki.dragino.com/images/thumb/a/a2/DOWNLINK_METER6.png/600px-DOWNLINK_METER6.png||height="365" width="600"]]
325 325  
326 326  DOWNLINK
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328 328  
329 329  === 1.3.4 How to configure and output commands for RS485 to USB ===
330 330  
331 -(((
332 332  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.
333 -)))
334 334  
335 -(((
336 336  First, connect the A+ and A- of the USB to the 485 A and 485 B of the energy meter.
337 -)))
338 338  
339 -(((
340 340  Open the serial port debugging, set the send and receive to HEX.
341 -)))
342 342  
343 -(((
344 344  Baud rate: 9600
345 -)))
346 346  
347 -(((
348 348  check digit: Even
349 -)))
350 350  
351 -[[image:https://wiki.dragino.com/images/thumb/8/8f/Usb_meter2.jpg/600px-Usb_meter2.jpg||height="725" width="544"]]
283 +[[image:https://wiki.dragino.com/images/thumb/8/8f/Usb_meter2.jpg/600px-Usb_meter2.jpg||height="800" width="600"]]
352 352  
353 353  USB
354 354  
287 +[[image:https://wiki.dragino.com/images/thumb/6/62/Usb_meter1.jpg/600px-Usb_meter1.jpg||height="800" width="600"]]
355 355  
356 -[[image:https://wiki.dragino.com/images/thumb/6/62/Usb_meter1.jpg/600px-Usb_meter1.jpg||height="728" width="546"]]
357 -
358 358  USB
359 359  
360 -
361 -(((
362 362  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.
363 -)))
364 364  
365 -(((
366 -**Example:**  input：01 03 00 31 00 02 95 c4
367 -)))
293 +Example:input：01 03 00 31 00 02 95 c4
368 368  
369 -(((
370 - output：01 03 04 00 00 00 42 7A 02
371 -)))
295 +{{{ output:01 03 04 00 00 00 42 7A 02
296 +}}}
372 372  
373 373  [[image:https://wiki.dragino.com/images/thumb/b/b3/Usb_meter3.jpg/600px-Usb_meter3.jpg||height="466" width="600"]]
374 374  
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378 378  
379 379  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.
380 380  
381 -(((
382 -(((
383 383  Set the device address according to the parameters in the appendix of the MODBUS communication protocol.
384 -)))
385 -)))
386 386  
387 387  [[image:https://wiki.dragino.com/images/thumb/1/1f/Double_meter3.png/600px-Double_meter3.png||alt="Double meter3.png" height="83" width="600"]]
388 388  
389 -**Example**:These two meters are examples of setting parameters and device addresses.
310 +Example:These two meters are examples of setting parameters and device addresses.
390 390  
391 -[[image:https://wiki.dragino.com/images/thumb/e/ee/Double_meter1.jpg/600px-Double_meter1.jpg||alt="Double meter1.jpg" height="737" width="553"]]
312 +[[image:https://wiki.dragino.com/images/thumb/e/ee/Double_meter1.jpg/600px-Double_meter1.jpg||alt="Double meter1.jpg" height="800" width="600"]]
392 392  
393 -[[image:https://wiki.dragino.com/images/thumb/7/72/Double_meter2.jpg/600px-Double_meter2.jpg||alt="Double meter2.jpg" height="733" width="550"]]
314 +[[image:https://wiki.dragino.com/images/thumb/7/72/Double_meter2.jpg/600px-Double_meter2.jpg||alt="Double meter2.jpg" height="800" width="600"]]
394 394  
395 -(((
396 -(((
397 397  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.
398 -)))
399 -)))
400 400  
401 -(((
402 -(((
403 403  We can use AT+CFGDEV to set the device address.
404 -)))
405 -)))
406 406  
407 -(((
408 -(((
409 409  We modify the device address 01 of the first energy meter to 02.
410 -)))
411 -)))
412 412  
413 413  [[image:https://wiki.dragino.com/images/6/6b/Double_meter4.png||alt="Double meter4.png" height="141" width="456"]]
414 414  
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