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

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Author
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1 -XWiki.Xiaoling
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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39 39  * [[Video Demo>>url:https://www.youtube.com/watch?v=TAFZ5eaf-MY&t=6s&ab_channel=XavierFlorensaBerenguer]]
40 40  
41 41  
42 -
43 43  == 1.2 Example 2: Connect to Pulse Counter ==
44 44  
45 45  
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51 51  **Connection**
52 52  
53 53  
54 -
55 55  [[image:image-20220527092146-4.png||height="507" width="906"]]
56 56  
57 57  **Connection**
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64 64  * [[Dragino Solution in Farm>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/&file=Dragino%20on%20Farms.pptx]]
65 65  
66 66  
67 -
68 68  == 1.3 Example 3: Use RS485-LN with energy meters ==
69 69  
70 70  === 1.3.1 OverView ===
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76 76  
77 77  (((
78 78  This example describes a single-phase meter.This is the connection between the RS485-LN and the energy meter.
79 -
80 -
81 81  )))
82 82  
83 83  [[image:image-20220527092419-5.png]]
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85 85  **Connection1**
86 86  
87 87  
88 -
89 89  (((
90 90  (% style="color:blue" %)**How to connect with Energy Meter：**
91 91  
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110 110  
111 111  (((
112 112  Once there is power, the RS485-LN will be on.
113 -
114 -
115 115  )))
116 116  
117 117  [[image:image-20220527092514-6.png]]
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119 119  **Connection2**
120 120  
121 121  
122 -
123 123  [[image:image-20220527092555-7.png]]
124 124  
125 125  **Connection3**
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167 167  * 08 FD is register data. Use short integer 16 bits to convert to decimal, get 2301, then 230.1V is the voltage.
168 168  
169 169  
170 -
171 171  === 1.3.3 How to configure RS485-LN and parse output commands ===
172 172  
173 173  
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206 206  **AT COMMAND**
207 207  
208 208  
209 -
210 210  PAYLOAD is available after the valid value is intercepted.
211 211  
212 212  [[image:image-20220601143046-7.png]]
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214 214  **AT COMMAND**
215 215  
216 216  
217 -
218 218  You can get configured PAYLOAD on TTN.
219 219  
220 220  [[image:image-20220601143519-1.png]]
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278 278  AT COMMAND
279 279  
280 280  
281 -
282 282  (% 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.**
283 283  
284 284  
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287 287  AT COMMAND
288 288  
289 289  
290 -
291 291  ==== **1.3.3.2 via LoRaWAN DOWNLINK** ====
292 292  
293 293  
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298 298  )))
299 299  
300 300  
301 -
302 302  (((
303 303  (% style="color:blue" %)**Type Code 0xAF**
304 304  )))
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360 360  **DOWNLINK**
361 361  
362 362  
363 -
364 364  [[image:image-20220601143803-3.png]]
365 365  
366 366  **DOWNLINK**
367 367  
368 368  
369 -
370 370  [[image:image-20220601144053-5.png]]
371 371  
372 372  **DOWNLINK**
373 373  
374 374  
375 -
376 376  [[image:image-20220601143921-4.png]]
377 377  
378 378  **DOWNLINK**
379 379  
380 380  
381 -
382 382  [[image:image-20220601142805-5.png]]
383 383  
384 384  **DOWNLINK**
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405 405  
406 406  (((
407 407  check digit: Even
408 -
409 -
410 410  )))
411 411  
412 412  [[image:image-20220527093708-21.png]]
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414 414  **USB**
415 415  
416 416  
417 -
418 418  [[image:image-20220527093747-22.png]]
419 419  
420 420  **USB**
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440 440  **USB**
441 441  
442 442  
443 -
444 444  === 1.3.5 How to configure multiple devices and modify device addresses ===
445 445  
446 446  
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539 539  * 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"]]
540 540  
541 541  
542 -
543 543  == 1.5 Example 5: SEM Three Energy Meter with RS485-BL or RS485-LN ==
544 544  
545 545  
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550 550  * 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"]]
551 551  
552 552  
553 -
554 554  == 1.6 Example 6: CEM C31 485-T1-MID Energy Meter with RS485-LN ==
555 555  
556 556  
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559 559  * 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);"]]
560 560  
561 561  
562 -
563 563  == 1.7 Example 7: Schneider Electric PLC M221 with RS485-BL ==
564 564  
565 565  
566 566  [[image:image-20220527094556-31.png]]
567 567  
541 +
568 568  Network Structure
569 569  
570 -
571 571  * [[Reference Instruction>>url:https://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/Schneider%20Electric%20PLC/]]
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 +
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