Last modified by Karry Zhuang on 2024/07/11 11:58
<
From version < 79.3 >
edited by Karry Zhuang
on 2024/07/11 11:56
To version < 60.13 >
edited by Xiaoling
on 2023/04/20 10:19
>
Change comment: There is no comment for this version

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1 -XWiki.karry
1 +XWiki.Xiaoling
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24 24  **Connection**
25 25  
26 26  
27 +
27 27  [[image:image-20220527091942-2.png]](% style="display:none" %)
28 28  
29 29  **Connection**
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38 38  * [[Video Demo>>url:https://www.youtube.com/watch?v=TAFZ5eaf-MY&t=6s&ab_channel=XavierFlorensaBerenguer]]
39 39  
40 40  
42 +
41 41  == 1.2 Example 2: Connect to Pulse Counter ==
42 42  
43 43  
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49 49  **Connection**
50 50  
51 51  
54 +
52 52  [[image:image-20220527092146-4.png||height="507" width="906"]]
53 53  
54 54  **Connection**
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61 61  * [[Dragino Solution in Farm>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/&file=Dragino%20on%20Farms.pptx]]
62 62  
63 63  
67 +
64 64  == 1.3 Example 3: Use RS485-LN with energy meters ==
65 65  
66 66  === 1.3.1 OverView ===
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72 72  
73 73  (((
74 74  This example describes a single-phase meter.This is the connection between the RS485-LN and the energy meter.
79 +
80 +
75 75  )))
76 76  
77 77  [[image:image-20220527092419-5.png]]
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79 79  **Connection1**
80 80  
81 81  
88 +
82 82  (((
83 83  (% style="color:blue" %)**How to connect with Energy Meter：**
84 84  
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103 103  
104 104  (((
105 105  Once there is power, the RS485-LN will be on.
113 +
114 +
106 106  )))
107 107  
108 108  [[image:image-20220527092514-6.png]]
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110 110  **Connection2**
111 111  
112 112  
122 +
113 113  [[image:image-20220527092555-7.png]]
114 114  
115 115  **Connection3**
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157 157  * 08 FD is register data. Use short integer 16 bits to convert to decimal, get 2301, then 230.1V is the voltage.
158 158  
159 159  
170 +
160 160  === 1.3.3 How to configure RS485-LN and parse output commands ===
161 161  
162 162  
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195 195  **AT COMMAND**
196 196  
197 197  
209 +
198 198  PAYLOAD is available after the valid value is intercepted.
199 199  
200 200  [[image:image-20220601143046-7.png]]
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202 202  **AT COMMAND**
203 203  
204 204  
217 +
205 205  You can get configured PAYLOAD on TTN.
206 206  
207 207  [[image:image-20220601143519-1.png]]
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265 265  AT COMMAND
266 266  
267 267  
281 +
268 268  (% 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.**
269 269  
270 270  
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273 273  AT COMMAND
274 274  
275 275  
290 +
276 276  ==== **1.3.3.2 via LoRaWAN DOWNLINK** ====
277 277  
278 278  
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283 283  )))
284 284  
285 285  
301 +
286 286  (((
287 287  (% style="color:blue" %)**Type Code 0xAF**
288 288  )))
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344 344  **DOWNLINK**
345 345  
346 346  
363 +
347 347  [[image:image-20220601143803-3.png]]
348 348  
349 349  **DOWNLINK**
350 350  
351 351  
369 +
352 352  [[image:image-20220601144053-5.png]]
353 353  
354 354  **DOWNLINK**
355 355  
356 356  
375 +
357 357  [[image:image-20220601143921-4.png]]
358 358  
359 359  **DOWNLINK**
360 360  
361 361  
381 +
362 362  [[image:image-20220601142805-5.png]]
363 363  
364 364  **DOWNLINK**
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385 385  
386 386  (((
387 387  check digit: Even
408 +
409 +
388 388  )))
389 389  
390 390  [[image:image-20220527093708-21.png]]
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392 392  **USB**
393 393  
394 394  
417 +
395 395  [[image:image-20220527093747-22.png]]
396 396  
397 397  **USB**
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417 417  **USB**
418 418  
419 419  
443 +
420 420  === 1.3.5 How to configure multiple devices and modify device addresses ===
421 421  
422 422  
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515 515  * Configure Documen:  [[Circuit Breaker Remote Open Close>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/Circuit_Breaker_Remote_Open_Close/||_mstmutation="1"]]
516 516  
517 517  
542 +
518 518  == 1.5 Example 5: SEM Three Energy Meter with RS485-BL or RS485-LN ==
519 519  
520 520  
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525 525  * Configure Document for RS485-LN:  [[Connect to SEM Three>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/SEM_Three_Energy_Meter/&file=SEM%20three%20and%20Dragino%20RS485-LN%20v1.pdf||_mstmutation="1"]]
526 526  
527 527  
553 +
528 528  == 1.6 Example 6: CEM C31 485-T1-MID Energy Meter with RS485-LN ==
529 529  
530 530  
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533 533  * Configure Document For RS485-LN:  [[CEM C31 485-T1-MID>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/ELECTRICAL%20CABINET/&file=ELECTRICAL%20CABINET%20READINGS.pdf||_mstmutation="1" style="background-color: rgb(255, 255, 255);"]]
534 534  
535 535  
562 +
536 536  == 1.7 Example 7: Schneider Electric PLC M221 with RS485-BL ==
537 537  
538 538  
539 539  [[image:image-20220527094556-31.png]]
540 540  
541 -
542 542  Network Structure
543 543  
544 -* [[Reference Instruction>>url:https://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/Schneider%20Electric%20PLC/]]
545 545  
546 -
547 -== 1.8 Example 8: This sketch is supposed to test Dragino RS485-BL (Modbus master), using an Arduino UNO as a Modbus slave. ==
548 -
549 -
550 -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.
551 -
552 -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.
553 -
554 -This is released the code under GNU LGPL licence on Github:
555 -
556 -[[https:~~/~~/github.com/zorbaproject/ArduinoModbusForDraginoRS485>>url:https://github.com/zorbaproject/ArduinoModbusForDraginoRS485]]
557 -
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 -Need to prepare RS485-LN, recharger, Electric wire
566 -
567 -[[image:1720669739434-926.png]] [[image:1720669744315-613.png]]
568 -
569 -
570 -=== 1.9.1 Setting Ultrasonic Flowmeter ===
571 -
572 -
573 -Adjust the M option corresponding to the ultrasonic flowmeter as follows
574 -
575 -M52 sets RS485 Port.
576 -
577 -[[image:1720669933691-331.png]]
578 -
579 -
580 -M62 sets 9600, none, 1
581 -
582 -[[image:1720669981767-254.png]]
583 -
584 -
585 -M63 sets automatic
586 -
587 -[[image:1720670003601-544.png]]
588 -
589 -
590 -=== 1.9.2 Setting Dragino RS485-LN ===
591 -
592 -
593 -The RS485-LN wiring port is as shown below. Connect the power supply and RS485 A/B line according to the diagram.
594 -
595 -[[image:1720670016539-422.png]][[image:1720670019136-658.png]]
596 -
597 -
598 -=== 1.9.3 Connect the RS485-LN to Ultrasonic Flowmeter ===
599 -
600 -
601 -According to the instructions of the ultrasonic flow meter, 26 and 27 are the + and - of RS485, corresponding to the A and B ports of RS485.
602 -
603 -[[image:1720670035661-234.png]][[image:1720670041974-372.png||height="417" width="436"]]
604 -
605 -
606 -=== 1.9.4 Full wiring example ===
607 -
608 -
609 -The yellow wire connects port 26 and port A of RS485-LN.
610 -
611 -The green wire connects port 27 and port B of RS485-LN.
612 -
613 -[[image:1720670079781-764.png]]
614 -
615 -
616 -=== 1.9.5 How to read ultrasonic flow meter data via RS485 ===
617 -
618 -
619 -[[image:1720670090204-634.png]]
620 -
621 -
622 -For example, I want to read Positive
623 -
624 -Through M02, we can see that the POS data is 54.9862
625 -
626 -[[image:1720670103571-173.png]][[image:1720670108127-723.png||height="597" width="645"]]
627 -
628 -Registers are 9-12, so the read command is AT+CFGDEV=01 03 00 08 00 04,1(,1 is used for automatic complement)
629 -
630 -[[image:1720670123955-149.png]]
631 -
632 -
633 -00 36 00 00 is the integer of the read value
634 -
635 -78 79 3f 7c is a decimal, but it needs to be converted and parsed into floating point. The parsing order is CDAB, which is 3f 7c 78 79
636 -
637 -Conversion and parsing website:http:~/~/www.speedfly.cn/tools/hexconvert/
638 -
639 -[[image:1720670134750-980.png]]
640 -
641 -
571 +* [[Reference Instruction>>url:https://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/Schneider%20Electric%20PLC/]]
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