Last modified by Karry Zhuang on 2024/07/11 11:58
<
From version < 61.1 >
edited by Bei Jinggeng
on 2023/08/08 15:16
To version < 78.1 >
edited by Karry Zhuang
on 2024/07/11 11:55
>
Change comment: Uploaded new attachment "1720670123955-149.png", version {1}

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1 -XWiki.Bei
1 +XWiki.karry
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24 24  **Connection**
25 25  
26 26  
27 -
28 28  [[image:image-20220527091942-2.png]](% style="display:none" %)
29 29  
30 30  **Connection**
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50 50  **Connection**
51 51  
52 52  
53 -
54 54  [[image:image-20220527092146-4.png||height="507" width="906"]]
55 55  
56 56  **Connection**
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74 74  
75 75  (((
76 76  This example describes a single-phase meter.This is the connection between the RS485-LN and the energy meter.
77 -
78 -
79 79  )))
80 80  
81 81  [[image:image-20220527092419-5.png]]
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83 83  **Connection1**
84 84  
85 85  
86 -
87 87  (((
88 88  (% style="color:blue" %)**How to connect with Energy Meter：**
89 89  
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108 108  
109 109  (((
110 110  Once there is power, the RS485-LN will be on.
111 -
112 -
113 113  )))
114 114  
115 115  [[image:image-20220527092514-6.png]]
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117 117  **Connection2**
118 118  
119 119  
120 -
121 121  [[image:image-20220527092555-7.png]]
122 122  
123 123  **Connection3**
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203 203  **AT COMMAND**
204 204  
205 205  
206 -
207 207  PAYLOAD is available after the valid value is intercepted.
208 208  
209 209  [[image:image-20220601143046-7.png]]
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211 211  **AT COMMAND**
212 212  
213 213  
214 -
215 215  You can get configured PAYLOAD on TTN.
216 216  
217 217  [[image:image-20220601143519-1.png]]
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275 275  AT COMMAND
276 276  
277 277  
278 -
279 279  (% style="color:blue" %)**01 is device address,00 02 is the current, 08 DC is the voltage,00 00 00 44 is the total active energy.**
280 280  
281 281  
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284 284  AT COMMAND
285 285  
286 286  
287 -
288 288  ==== **1.3.3.2 via LoRaWAN DOWNLINK** ====
289 289  
290 290  
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295 295  )))
296 296  
297 297  
298 -
299 299  (((
300 300  (% style="color:blue" %)**Type Code 0xAF**
301 301  )))
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357 357  **DOWNLINK**
358 358  
359 359  
360 -
361 361  [[image:image-20220601143803-3.png]]
362 362  
363 363  **DOWNLINK**
364 364  
365 365  
366 -
367 367  [[image:image-20220601144053-5.png]]
368 368  
369 369  **DOWNLINK**
370 370  
371 371  
372 -
373 373  [[image:image-20220601143921-4.png]]
374 374  
375 375  **DOWNLINK**
376 376  
377 377  
378 -
379 379  [[image:image-20220601142805-5.png]]
380 380  
381 381  **DOWNLINK**
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402 402  
403 403  (((
404 404  check digit: Even
405 -
406 -
407 407  )))
408 408  
409 409  [[image:image-20220527093708-21.png]]
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411 411  **USB**
412 412  
413 413  
414 -
415 415  [[image:image-20220527093747-22.png]]
416 416  
417 417  **USB**
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437 437  **USB**
438 438  
439 439  
440 -
441 441  === 1.3.5 How to configure multiple devices and modify device addresses ===
442 442  
443 443  
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564 564  
565 565  * [[Reference Instruction>>url:https://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/Schneider%20Electric%20PLC/]]
566 566  
567 -== ==
568 568  
569 -== 1.8  Example 8: This sketch is supposed to test Dragino RS485-BL (Modbus master), using an Arduino UNO as a Modbus slave. ==
547 +== 1.8 Example 8: This sketch is supposed to test Dragino RS485-BL (Modbus master), using an Arduino UNO as a Modbus slave. ==
570 570  
549 +
571 571  This sketch uses 4 registers: some of them can be set by Dragino with a command, another is used to store value from a DS18B20 temperature sensor, or a random generated number. All data is 16bit uint, but the sketch shows also how to represent booleans and negative numbers.
572 572  
573 573  In the next days I will be adding more documentation, but I think it already explains users how to build their own modbus sensor to pair with Dragino RS485-BL.
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576 576  
577 577  [[https:~~/~~/github.com/zorbaproject/ArduinoModbusForDraginoRS485>>url:https://github.com/zorbaproject/ArduinoModbusForDraginoRS485]]
578 578  
579 -
558 +
559 +== 1.9 Example 9: RS485-LN and ultrasonic flow meter transmission data ==
560 +
561 +
562 +It shows how to use RS485-LN to connect to an ultrasonic flow meter and read the data from the ultrasonic flow meter.
563 +
564 +
565 +
566 +* **Specific steps**:  RS485-LN with ultrasonic flow meter
567 +*
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