<
From version < 62.2 >
edited by Xiaoling
on 2024/05/30 17:46
To version < 80.1
edited by Karry Zhuang
on 2024/07/11 11:58
Change comment: There is no comment for this version

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1 -XWiki.Xiaoling
1 +XWiki.karry
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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  
41 -
42 42  == 1.2 Example 2: Connect to Pulse Counter ==
43 43  
44 44  
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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  
64 64  
65 -
66 66  == 1.3 Example 3: Use RS485-LN with energy meters ==
67 67  
68 68  === 1.3.1 OverView ===
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159 159  * 08 FD is register data. Use short integer 16 bits to convert to decimal, get 2301, then 230.1V is the voltage.
160 160  
161 161  
162 -
163 163  === 1.3.3 How to configure RS485-LN and parse output commands ===
164 164  
165 165  
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518 518  * 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"]]
519 519  
520 520  
521 -
522 522  == 1.5 Example 5: SEM Three Energy Meter with RS485-BL or RS485-LN ==
523 523  
524 524  
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529 529  * 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"]]
530 530  
531 531  
532 -
533 533  == 1.6 Example 6: CEM C31 485-T1-MID Energy Meter with RS485-LN ==
534 534  
535 535  
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538 538  * 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);"]]
539 539  
540 540  
541 -
542 542  == 1.7 Example 7: Schneider Electric PLC M221 with RS485-BL ==
543 543  
544 544  
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550 550  * [[Reference Instruction>>url:https://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/Schneider%20Electric%20PLC/]]
551 551  
552 552  
553 -
554 554  == 1.8 Example 8: This sketch is supposed to test Dragino RS485-BL (Modbus master), using an Arduino UNO as a Modbus slave. ==
555 555  
556 556  
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562 562  
563 563  [[https:~~/~~/github.com/zorbaproject/ArduinoModbusForDraginoRS485>>url:https://github.com/zorbaproject/ArduinoModbusForDraginoRS485]]
564 564  
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 +
565 565  
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