Last modified by Karry Zhuang on 2024/07/11 11:58
<
From version < 62.1 >
edited by Bei Jinggeng
on 2023/08/08 15:23
To version < 79.5 >
edited by Karry Zhuang
on 2024/07/11 11:58
>
Change comment: There is no comment for this version

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Author
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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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38 38  
39 39  * [[Video Demo>>url:https://www.youtube.com/watch?v=TAFZ5eaf-MY&t=6s&ab_channel=XavierFlorensaBerenguer]]
40 40  
40 +
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  
52 -
53 53  [[image:image-20220527092146-4.png||height="507" width="906"]]
54 54  
55 55  **Connection**
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61 61  
62 62  * [[Dragino Solution in Farm>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/&file=Dragino%20on%20Farms.pptx]]
63 63  
63 +
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.
75 -
76 -
77 77  )))
78 78  
79 79  [[image:image-20220527092419-5.png]]
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81 81  **Connection1**
82 82  
83 83  
84 -
85 85  (((
86 86  (% style="color:blue" %)**How to connect with Energy Meter：**
87 87  
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106 106  
107 107  (((
108 108  Once there is power, the RS485-LN will be on.
109 -
110 -
111 111  )))
112 112  
113 113  [[image:image-20220527092514-6.png]]
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115 115  **Connection2**
116 116  
117 117  
118 -
119 119  [[image:image-20220527092555-7.png]]
120 120  
121 121  **Connection3**
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162 162  
163 163  * 08 FD is register data. Use short integer 16 bits to convert to decimal, get 2301, then 230.1V is the voltage.
164 164  
159 +
165 165  === 1.3.3 How to configure RS485-LN and parse output commands ===
166 166  
167 167  
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200 200  **AT COMMAND**
201 201  
202 202  
203 -
204 204  PAYLOAD is available after the valid value is intercepted.
205 205  
206 206  [[image:image-20220601143046-7.png]]
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208 208  **AT COMMAND**
209 209  
210 210  
211 -
212 212  You can get configured PAYLOAD on TTN.
213 213  
214 214  [[image:image-20220601143519-1.png]]
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272 272  AT COMMAND
273 273  
274 274  
275 -
276 276  (% 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.**
277 277  
278 278  
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281 281  AT COMMAND
282 282  
283 283  
284 -
285 285  ==== **1.3.3.2 via LoRaWAN DOWNLINK** ====
286 286  
287 287  
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292 292  )))
293 293  
294 294  
295 -
296 296  (((
297 297  (% style="color:blue" %)**Type Code 0xAF**
298 298  )))
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354 354  **DOWNLINK**
355 355  
356 356  
357 -
358 358  [[image:image-20220601143803-3.png]]
359 359  
360 360  **DOWNLINK**
361 361  
362 362  
363 -
364 364  [[image:image-20220601144053-5.png]]
365 365  
366 366  **DOWNLINK**
367 367  
368 368  
369 -
370 370  [[image:image-20220601143921-4.png]]
371 371  
372 372  **DOWNLINK**
373 373  
374 374  
375 -
376 376  [[image:image-20220601142805-5.png]]
377 377  
378 378  **DOWNLINK**
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399 399  
400 400  (((
401 401  check digit: Even
402 -
403 -
404 404  )))
405 405  
406 406  [[image:image-20220527093708-21.png]]
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408 408  **USB**
409 409  
410 410  
411 -
412 412  [[image:image-20220527093747-22.png]]
413 413  
414 414  **USB**
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434 434  **USB**
435 435  
436 436  
437 -
438 438  === 1.3.5 How to configure multiple devices and modify device addresses ===
439 439  
440 440  
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532 532  
533 533  * 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"]]
534 534  
517 +
535 535  == 1.5 Example 5: SEM Three Energy Meter with RS485-BL or RS485-LN ==
536 536  
537 537  
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541 541  
542 542  * 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"]]
543 543  
527 +
544 544  == 1.6 Example 6: CEM C31 485-T1-MID Energy Meter with RS485-LN ==
545 545  
546 546  
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548 548  
549 549  * 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);"]]
550 550  
535 +
551 551  == 1.7 Example 7: Schneider Electric PLC M221 with RS485-BL ==
552 552  
553 553  
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558 558  
559 559  * [[Reference Instruction>>url:https://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/Schneider%20Electric%20PLC/]]
560 560  
561 -== 1.8  Example 8: This sketch is supposed to test Dragino RS485-BL (Modbus master), using an Arduino UNO as a Modbus slave. ==
562 562  
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 +
563 563  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.
564 564  
565 565  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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568 568  
569 569  [[https:~~/~~/github.com/zorbaproject/ArduinoModbusForDraginoRS485>>url:https://github.com/zorbaproject/ArduinoModbusForDraginoRS485]]
570 570  
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  M62 sets 9600, none, 1  M63 sets automatic
576 +
577 +[[image:1720669933691-331.png]][[image:1720669981767-254.png||height="550" width="412"]][[image:1720670003601-544.png||height="550" width="412"]]
578 +
579 +
580 +=== 1.9.2 Setting Dragino RS485-LN ===
581 +
582 +
583 +The RS485-LN wiring port is as shown below. Connect the power supply and RS485 A/B line according to the diagram.
584 +
585 +[[image:1720670016539-422.png]][[image:1720670019136-658.png]]
586 +
587 +
588 +=== 1.9.3 Connect the RS485-LN to Ultrasonic Flowmeter ===
589 +
590 +
591 +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.
592 +
593 +[[image:1720670035661-234.png]][[image:1720670041974-372.png||height="417" width="436"]]
594 +
595 +
596 +=== 1.9.4 Full wiring example ===
597 +
598 +
599 +The yellow wire connects port 26 and port A of RS485-LN.
600 +
601 +The green wire connects port 27 and port B of RS485-LN.
602 +
603 +[[image:1720670079781-764.png]]
604 +
605 +
606 +=== 1.9.5 How to read ultrasonic flow meter data via RS485 ===
607 +
608 +
609 +[[image:1720670090204-634.png]]
610 +
611 +
612 +For example, I want to read Positive
613 +
614 +Through M02, we can see that the POS data is 54.9862
615 +
616 +[[image:1720670103571-173.png]][[image:1720670108127-723.png||height="597" width="645"]]
617 +
618 +Registers are 9-12, so the read command is AT+CFGDEV=01 03 00 08 00 04,1(,1 is used for automatic complement)
619 +
620 +[[image:1720670123955-149.png]]
621 +
622 +
623 +00 36 00 00 is the integer of the read value
624 +
625 +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
626 +
627 +Conversion and parsing website:http:~/~/www.speedfly.cn/tools/hexconvert/
628 +
629 +[[image:1720670134750-980.png]]
630 +
571 571  
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