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Last modified by Xiaoling on 2025/04/23 15:57
From version 29.16
edited by Xiaoling
on 2022/06/01 18:05
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To version 28.2
edited by Xiaoling
on 2022/05/23 10:44
Change comment: There is no comment for this version

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7 7  **RS485-BL – Waterproof RS485 to LoRaWAN Converter User Manual**
8 8  
9 9  
10 -
11 11  **Table of Contents:**
12 12  
13 -{{toc/}}
14 14  
15 15  
16 16  
17 17  
18 -
19 19  = 1.Introduction =
20 20  
21 21  == 1.1 What is RS485-BL RS485 to LoRaWAN Converter ==
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25 25  )))
26 26  
27 27  (((
28 -The Dragino RS485-BL is a (% style="color:blue" %)**RS485 / UART to LoRaWAN Converter**(%%) for Internet of Things solutions. User can connect RS485 or UART sensor to RS485-BL converter, and configure RS485-BL to periodically read sensor data and upload via LoRaWAN network to IoT server.
25 +The Dragino RS485-BL is a **RS485 / UART to LoRaWAN Converter** for Internet of Things solutions. User can connect RS485 or UART sensor to RS485-BL converter, and configure RS485-BL to periodically read sensor data and upload via LoRaWAN network to IoT server.
29 29  )))
30 30  
31 31  (((
32 -RS485-BL can interface to RS485 sensor, 3.3v/5v UART sensor or interrupt sensor. RS485-BL provides (% style="color:blue" %)**a 3.3v output**(%%) and** (% style="color:blue" %)a 5v output(%%)** to power external sensors. Both output voltages are controllable to minimize the total system power consumption.
29 +RS485-BL can interface to RS485 sensor, 3.3v/5v UART sensor or interrupt sensor. RS485-BL provides **a 3.3v output** and** a 5v output** to power external sensors. Both output voltages are controllable to minimize the total system power consumption.
33 33  )))
34 34  
35 35  (((
36 -RS485-BL is IP67 (% style="color:blue" %)**waterproof**(%%) and powered by (% style="color:blue" %)**8500mAh Li-SOCI2 battery**(%%), it is designed for long term use for several years.
33 +RS485-BL is IP67 **waterproof** and powered by **8500mAh Li-SOCI2 battery**, it is designed for long term use for several years.
37 37  )))
38 38  
39 39  (((
40 -RS485-BL runs standard (% style="color:blue" %)**LoRaWAN 1.0.3 in Class A**(%%). It can reach long transfer range and easy to integrate with LoRaWAN compatible gateway and IoT server.
37 +RS485-BL runs standard **LoRaWAN 1.0.3 in Class A**. It can reach long transfer range and easy to integrate with LoRaWAN compatible gateway and IoT server.
41 41  )))
42 42  
43 43  (((
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54 54  
55 55  [[image:1652953304999-717.png||height="424" width="733"]]
56 56  
57 -
58 -
59 59  == 1.2 Specifications ==
60 60  
61 61  **Hardware System:**
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95 95  * 127 dB Dynamic Range RSSI.
96 96  * Automatic RF Sense and CAD with ultra-fast AFC. ​​​
97 97  
98 -
99 99  == 1.3 Features ==
100 100  
101 101  * LoRaWAN Class A & Class C protocol (default Class A)
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107 107  * Support Modbus protocol
108 108  * Support Interrupt uplink
109 109  
110 -
111 111  == 1.4 Applications ==
112 112  
113 113  * Smart Buildings & Home Automation
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117 117  * Smart Cities
118 118  * Smart Factory
119 119  
120 -
121 121  == 1.5 Firmware Change log ==
122 122  
123 123  [[RS485-BL Image files – Download link and Change log>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/RS485-BL/Firmware/||style="background-color: rgb(255, 255, 255);"]]
124 124  
125 -
126 126  == 1.6 Hardware Change log ==
127 127  
128 128  (((
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149 149  
150 150  (((
151 151  Release version ​​​​​
152 -
153 -
154 154  )))
155 155  
156 156  = 2. Pin mapping and Power ON Device =
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164 164  
165 165  The Left TXD and RXD are TTL interface for external sensor. TTL level is controlled by 3.3/5v Jumper.
166 166  
167 -
168 168  = 3. Operation Mode =
169 169  
170 170  == 3.1 How it works? ==
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171 171  
172 172  (((
173 173  The RS485-BL is configured as LoRaWAN OTAA Class A 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-BL. It will auto join the network via OTAA.
174 -
175 -
176 176  )))
177 177  
178 178  == 3.2 Example to join LoRaWAN network ==
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236 236  == 3.3 Configure Commands to read data ==
237 237  
238 238  (((
239 -There are plenty of RS485 and TTL level devices in the market and each device has different command to read the valid data. To support these devices in flexible, RS485-BL supports flexible command set. User can use [[AT Commands or LoRaWAN Downlink>>||anchor="H3.5ConfigureRS485-BLviaATorDownlink"]] Command to configure how RS485-BL should read the sensor and how to handle the return from RS485 or TTL sensors.
240 -
241 -
225 +There are plenty of RS485 and TTL level devices in the market and each device has different command to read the valid data. To support these devices in flexible, RS485-BL supports flexible command set. User can use [[AT Commands or LoRaWAN Downlink>>path:#AT_COMMAND]] Command to configure how RS485-BL should read the sensor and how to handle the return from RS485 or TTL sensors.
242 242  )))
243 243  
244 244  === 3.3.1 onfigure UART settings for RS485 or TTL communication ===
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625 625  
626 626  [[image:1653273818896-432.png]]
627 627  
628 -(((
629 629  AT+INTMOD=0  Disable Interrupt
630 -)))
631 631  
632 -(((
633 633  AT+INTMOD=1  Interrupt trigger by rising or falling edge.
634 -)))
635 635  
636 -(((
637 637  AT+INTMOD=2  Interrupt trigger by falling edge. ( Default Value)
638 -)))
639 639  
640 -(((
641 641  AT+INTMOD=3  Interrupt trigger by rising edge.
642 -)))
643 643  
644 644  == 3.4 Uplink Payload ==
645 645  
646 -(% border="1" style="background-color:#4f81bd; color:white; width:850px" %)
647 -|**Size(bytes)**|(% style="width:130px" %)**2**|(% style="width:93px" %)**1**|(% style="width:509px" %)**Length depends on the return from the commands**
648 -|Value|(% style="width:130px" %)(((
649 -(((
622 +|**Size(bytes)**|**2**|**1**|**Length depends on the return from the commands**
623 +|Value|(((
650 650  Battery(mV)
651 -)))
652 652  
653 -(((
654 654  &
655 -)))
656 656  
657 -(((
658 658  Interrupt _Flag
659 -)))
660 -)))|(% style="width:93px" %)(((
629 +)))|(((
661 661  PAYLOAD_VER
662 662  
663 663  
664 -)))|(% style="width:509px" %)If the valid payload is too long and exceed the maximum support payload length in server, server will show payload not provided in the LoRaWAN server.
633 +)))|If the valid payload is too long and exceed the maximum support payload length in server, server will show payload not provided in the LoRaWAN server.
665 665  
666 666  Below is the decoder for the first 3 bytes. The rest bytes are dynamic depends on different RS485 sensors.
667 667  
668 -(((
637 +
669 669  function Decoder(bytes, port) {
670 -)))
671 671  
672 -(((
673 673  ~/~/Payload Formats of RS485-BL Deceive
674 -)))
675 675  
676 -(((
677 677  return {
678 -)))
679 679  
680 -(((
681 681   ~/~/Battery,units:V
682 -)))
683 683  
684 -(((
685 685   BatV:((bytes[0]<<8 | bytes[1])&0x7fff)/1000,
686 -)))
687 687  
688 -(((
689 689   ~/~/GPIO_EXTI 
690 -)))
691 691  
692 -(((
693 693   EXTI_Trigger:(bytes[0] & 0x80)? "TRUE":"FALSE",
694 -)))
695 695  
696 -(((
697 697   ~/~/payload of version
698 -)))
699 699  
700 -(((
701 701   Pay_ver:bytes[2],
702 -)))
703 703  
704 -(((
705 705   };
706 -)))
707 707  
708 -(((
709 709   }
710 -)))
711 711  
712 -(((
660 +
661 +
662 +
663 +
664 +
665 +
713 713  TTN V3 uplink screen shot.
714 -)))
715 715  
716 -[[image:1653274001211-372.png||height="192" width="732"]]
668 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image023.png]]
717 717  
718 -== 3.5 Configure RS485-BL via AT or Downlink ==
670 +1.
671 +11. Configure RS485-BL via AT or Downlink
719 719  
720 720  User can configure RS485-BL via [[AT Commands >>path:#_​Using_the_AT]]or LoRaWAN Downlink Commands
721 721  
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