Last modified by Karry Zhuang on 2025/03/06 16:34
<
From version < 32.12 >
edited by Xiaoling
on 2022/06/02 15:26
To version < 30.1 >
edited by Xiaoling
on 2022/05/23 09:38
>
Change comment: Uploaded new attachment "1653269916228-732.png", version {1}

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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 -
45 45  **Hardware System:**
46 46  
47 47  * STM32L072CZT6 MCU
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48 48  * SX1276/78 Wireless Chip 
49 49  * Power Consumption (exclude RS485 device):
50 50  ** Idle: 32mA@12v
47 +
48 +*
51 51  ** 20dB Transmit: 65mA@12v
52 52  
53 53  **Interface for Model:**
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76 76  * Automatic RF Sense and CAD with ultra-fast AFC.
77 77  * Packet engine up to 256 bytes with CRC.
78 78  
79 -
80 -
81 81  == 1.3 Features ==
82 82  
83 83  * LoRaWAN Class A & Class C protocol (default Class C)
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89 89  * Support Modbus protocol
90 90  * Support Interrupt uplink (Since hardware version v1.2)
91 91  
92 -
93 -
94 94  == 1.4 Applications ==
95 95  
96 96  * Smart Buildings & Home Automation
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100 100  * Smart Cities
101 101  * Smart Factory
102 102  
103 -
104 -
105 105  == 1.5 Firmware Change log ==
106 106  
107 107  [[RS485-LN Image files – Download link and Change log>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/]]
108 108  
109 -
110 110  == 1.6 Hardware Change log ==
111 111  
112 112  (((
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114 114  v1.2: Add External Interrupt Pin.
115 115  
116 116  v1.0: Release
117 -
118 -
119 119  )))
120 120  )))
121 121  
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132 132  )))
133 133  
134 134  [[image:1653268091319-405.png]]
135 -
136 -
137 137  )))
138 138  
139 139  = 3. Operation Mode =
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142 142  
143 143  (((
144 144  The RS485-LN is configured as LoRaWAN OTAA Class C mode by default. It has OTAA keys to join network. To connect a local LoRaWAN network, user just need to input the OTAA keys in the network server and power on the RS485-LN. It will auto join the network via OTAA.
145 -
146 -
147 147  )))
148 148  
149 149  == 3.2 Example to join LoRaWAN network ==
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492 492  
493 493  [[image:1653269759169-150.png||height="513" width="716"]]
494 494  
495 -(% style="color:#4f81bd" %)**Examples: AT+DATAUP=1**
496 496  
497 -Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**Multiply UPLINKs**.
498 498  
482 +**Examples: AT+DATAUP=1**
483 +
484 +Compose the uplink payload with value returns in sequence and send with **Multiply UPLINKs**.
485 +
499 499  Final Payload is
500 500  
501 -(% style="color:#4f81bd" %)**Battery Info+PAYVER + PAYLOAD COUNT + PAYLOAD# + DATA**
488 +Battery Info+PAYVER + PAYLOAD COUNT + PAYLOAD# + DATA
502 502  
503 503  1. Battery Info (2 bytes): Battery voltage
504 504  1. PAYVER (1 byte): Defined by AT+PAYVER
505 505  1. PAYLOAD COUNT (1 byte): Total how many uplinks of this sampling.
506 506  1. PAYLOAD# (1 byte): Number of this uplink. (from 0,1,2,3…,to PAYLOAD COUNT)
507 -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
508 508  
509 -[[image:1653269916228-732.png||height="433" width="711"]]
496 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image020.png]]
510 510  
511 511  
512 512  So totally there will be 3 uplinks for this sampling, each uplink includes 6 bytes DATA
513 513  
514 -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
515 515  
516 -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
517 517  
518 -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
519 519  
507 +
508 +
520 520  Below are the uplink payloads:
521 521  
522 -[[image:1653270130359-810.png]]
511 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image021.png]]
523 523  
524 524  
525 -(% 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:
526 526  
527 527   ~* For AU915/AS923 bands, if UplinkDwell time=0, max 51 bytes for each uplink ( so 51 -5 = 46 max valid date)
528 528  
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532 532  
533 533   ~* For all other bands: max 51 bytes for each uplink  ( so 51 -5 = 46 max valid date).
534 534  
535 -=== 3.3.5 Uplink on demand ===
536 536  
525 +
526 +1.
527 +11.
528 +111. Uplink on demand
529 +
537 537  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.
538 538  
539 539  Downlink control command:
1653270130359-810.png
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1 -XWiki.Xiaoling
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