Last modified by Karry Zhuang on 2025/03/06 16:34
<
From version < 32.4 >
edited by Xiaoling
on 2022/06/02 15:24
To version < 29.3 >
edited by Xiaoling
on 2022/05/23 09:37
>
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18 18  
19 19  (((
20 20  (((
21 -The Dragino RS485-LN is a (% style="color:blue" %)**RS485 to LoRaWAN Converter**(%%). It converts the RS485 signal into LoRaWAN wireless signal which simplify the IoT installation and reduce the installation/maintaining cost.
21 +The Dragino RS485-LN is a RS485 to LoRaWAN Converter. It converts the RS485 signal into LoRaWAN wireless signal which simplify the IoT installation and reduce the installation/maintaining cost.
22 22  )))
23 23  
24 24  (((
25 -RS485-LN allows user to (% style="color:blue" %)**monitor / control RS485 devices**(%%) and reach extremely long ranges. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption. It targets professional wireless sensor network applications such as irrigation systems, smart metering, smart cities, smartphone detection, building automation, and so on.
25 +RS485-LN allows user to monitor / control RS485 devices and reach extremely long ranges. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption. It targets professional wireless sensor network applications such as irrigation systems, smart metering, smart cities, smartphone detection, building automation, and so on.
26 26  )))
27 27  
28 28  (((
29 -(% style="color:blue" %)**For data uplink**(%%), RS485-LN sends user-defined commands to RS485 devices and gets the return from the RS485 devices. RS485-LN will process these returns according to user-define rules to get the final payload and upload to LoRaWAN server.
29 +For data uplink, RS485-LN sends user-defined commands to RS485 devices and gets the return from the RS485 devices. RS485-LN will process these returns according to user-define rules to get the final payload and upload to LoRaWAN server.
30 30  )))
31 31  
32 32  (((
33 -(% style="color:blue" %)**For data downlink**(%%), RS485-LN runs in LoRaWAN Class C. When there downlink commands from LoRaWAN server, RS485-LN will forward the commands from LoRaWAN server to RS485 devices.
34 -
35 -(% style="color:blue" %)**Demo Dashboard for RS485-LN**(%%) connect to two energy meters: [[https:~~/~~/app.datacake.de/dashboard/d/58844a26-378d-4c5a-aaf5-b5b5b153447a>>url:https://app.datacake.de/dashboard/d/58844a26-378d-4c5a-aaf5-b5b5b153447a]]
33 +For data downlink, RS485-LN runs in LoRaWAN Class C. When there downlink commands from LoRaWAN server, RS485-LN will forward the commands from LoRaWAN server to RS485 devices.
36 36  )))
37 37  )))
38 38  
39 39  [[image:1653267211009-519.png||height="419" width="724"]]
40 40  
41 -
42 42  == 1.2 Specifications ==
43 43  
44 44  **Hardware System:**
... ... @@ -480,37 +480,41 @@
480 480  
481 481  [[image:1653269759169-150.png||height="513" width="716"]]
482 482  
483 -(% style="color:#4f81bd" %)**Examples: AT+DATAUP=1**
484 484  
485 -Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**Multiply UPLINKs**.
486 486  
482 +**Examples: AT+DATAUP=1**
483 +
484 +Compose the uplink payload with value returns in sequence and send with **Multiply UPLINKs**.
485 +
487 487  Final Payload is
488 488  
489 -(% style="color:#4f81bd" %)**Battery Info+PAYVER + PAYLOAD COUNT + PAYLOAD# + DATA**
488 +Battery Info+PAYVER + PAYLOAD COUNT + PAYLOAD# + DATA
490 490  
491 491  1. Battery Info (2 bytes): Battery voltage
492 492  1. PAYVER (1 byte): Defined by AT+PAYVER
493 493  1. PAYLOAD COUNT (1 byte): Total how many uplinks of this sampling.
494 494  1. PAYLOAD# (1 byte): Number of this uplink. (from 0,1,2,3…,to PAYLOAD COUNT)
495 -1. DATA: Valid value: max 6 bytes(US915 version here, Notice*!) for each uplink so each uplink <= 11 bytes. For the last uplink, DATA will might less than 6 bytes
494 +1. DATA: Valid value: max 6 bytes(US915 version here, [[Notice*!>>path:#max_byte]]) for each uplink so each uplink <= 11 bytes. For the last uplink, DATA will might less than 6 bytes
496 496  
497 -[[image:1653269916228-732.png||height="433" width="711"]]
496 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image020.png]]
498 498  
499 499  
500 500  So totally there will be 3 uplinks for this sampling, each uplink includes 6 bytes DATA
501 501  
502 -DATA1=RETURN1 Valid Value = (% style="background-color:green; color:white" %)20 20 0a 33 90 41
501 +DATA1=RETURN1 Valid Value = 20 20 0a 33 90 41
503 503  
504 -DATA2=1^^st^^ ~~ 6^^th^^ byte of Valid value of RETURN10=(% style="background-color:green; color:white" %) 02 aa 05 81 0a 20
503 +DATA2=1^^st^^ ~~ 6^^th^^ byte of Valid value of RETURN10= 02 aa 05 81 0a 20
505 505  
506 -DATA3=7^^th^^ ~~ 11^^th^^ bytes of Valid value of RETURN10 = (% style="background-color:green; color:white" %)20 20 20 2d 30
505 +DATA3=7^^th^^ ~~ 11^^th^^ bytes of Valid value of RETURN10 = 20 20 20 2d 30
507 507  
507 +
508 +
508 508  Below are the uplink payloads:
509 509  
510 -[[image:1653270130359-810.png]]
511 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image021.png]]
511 511  
512 512  
513 -(% style="color:red" %)**Notice: the Max bytes is according to the max support bytes in different Frequency Bands for lowest SF. As below:**
514 +Notice: the Max bytes is according to the max support bytes in different Frequency Bands for lowest SF. As below:
514 514  
515 515   ~* For AU915/AS923 bands, if UplinkDwell time=0, max 51 bytes for each uplink ( so 51 -5 = 46 max valid date)
516 516  
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520 520  
521 521   ~* For all other bands: max 51 bytes for each uplink  ( so 51 -5 = 46 max valid date).
522 522  
523 -=== 3.3.5 Uplink on demand ===
524 524  
525 +
526 +1.
527 +11.
528 +111. Uplink on demand
529 +
525 525  Except uplink periodically, RS485-BL is able to uplink on demand. The server sends downlink command to RS485-BL and RS485 will uplink data base on the command.
526 526  
527 527  Downlink control command:
1653269916228-732.png
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