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Last modified by Xiaoling on 2025/04/23 15:57
From version 29.19
edited by Xiaoling
on 2022/06/01 18:08
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To version 28.3
edited by Xiaoling
on 2022/05/23 10:46
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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 -
62 62  **Hardware System:**
63 63  
64 64  * STM32L072CZT6 MCU
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65 65  * SX1276/78 Wireless Chip 
66 66  * Power Consumption (exclude RS485 device):
67 67  ** Idle: 6uA@3.3v
62 +
63 +*
68 68  ** 20dB Transmit: 130mA@3.3v
69 69  
70 -
71 71  **Interface for Model:**
72 72  
73 73  * 1 x RS485 Interface
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77 77  * 1 x Interrupt Interface
78 78  * 1 x Controllable 5V output, max
79 79  
80 -
81 81  **LoRa Spec:**
82 82  
83 83  * Frequency Range:
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96 96  * 127 dB Dynamic Range RSSI.
97 97  * Automatic RF Sense and CAD with ultra-fast AFC. ​​​
98 98  
99 -
100 100  == 1.3 Features ==
101 101  
102 102  * LoRaWAN Class A & Class C protocol (default Class A)
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108 108  * Support Modbus protocol
109 109  * Support Interrupt uplink
110 110  
111 -
112 112  == 1.4 Applications ==
113 113  
114 114  * Smart Buildings & Home Automation
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118 118  * Smart Cities
119 119  * Smart Factory
120 120  
121 -
122 122  == 1.5 Firmware Change log ==
123 123  
124 124  [[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);"]]
125 125  
126 -
127 127  == 1.6 Hardware Change log ==
128 128  
129 129  (((
130 -
131 -
132 132  v1.4
133 133  )))
134 134  
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152 152  
153 153  (((
154 154  Release version ​​​​​
155 -
156 -
157 157  )))
158 158  
159 159  = 2. Pin mapping and Power ON Device =
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167 167  
168 168  The Left TXD and RXD are TTL interface for external sensor. TTL level is controlled by 3.3/5v Jumper.
169 169  
170 -
171 171  = 3. Operation Mode =
172 172  
173 173  == 3.1 How it works? ==
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174 174  
175 175  (((
176 176  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.
177 -
178 -
179 179  )))
180 180  
181 181  == 3.2 Example to join LoRaWAN network ==
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211 211  )))
212 212  
213 213  
197 +
198 +
214 214  [[image:image-20220519174512-1.png]]
215 215  
216 216  [[image:image-20220519174512-2.png||height="328" width="731"]]
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237 237  == 3.3 Configure Commands to read data ==
238 238  
239 239  (((
240 -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.
241 -
242 -
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.
243 243  )))
244 244  
245 245  === 3.3.1 onfigure UART settings for RS485 or TTL communication ===
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626 626  
627 627  [[image:1653273818896-432.png]]
628 628  
629 -(((
630 630  AT+INTMOD=0  Disable Interrupt
631 -)))
632 632  
633 -(((
634 634  AT+INTMOD=1  Interrupt trigger by rising or falling edge.
635 -)))
636 636  
637 -(((
638 638  AT+INTMOD=2  Interrupt trigger by falling edge. ( Default Value)
639 -)))
640 640  
641 -(((
642 642  AT+INTMOD=3  Interrupt trigger by rising edge.
643 -)))
644 644  
645 645  == 3.4 Uplink Payload ==
646 646  
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666 666  
667 667  Below is the decoder for the first 3 bytes. The rest bytes are dynamic depends on different RS485 sensors.
668 668  
669 -(((
644 +
670 670  function Decoder(bytes, port) {
671 -)))
672 672  
673 -(((
674 674  ~/~/Payload Formats of RS485-BL Deceive
675 -)))
676 676  
677 -(((
678 678  return {
679 -)))
680 680  
681 -(((
682 682   ~/~/Battery,units:V
683 -)))
684 684  
685 -(((
686 686   BatV:((bytes[0]<<8 | bytes[1])&0x7fff)/1000,
687 -)))
688 688  
689 -(((
690 690   ~/~/GPIO_EXTI 
691 -)))
692 692  
693 -(((
694 694   EXTI_Trigger:(bytes[0] & 0x80)? "TRUE":"FALSE",
695 -)))
696 696  
697 -(((
698 698   ~/~/payload of version
699 -)))
700 700  
701 -(((
702 702   Pay_ver:bytes[2],
703 -)))
704 704  
705 -(((
706 706   };
707 -)))
708 708  
709 -(((
710 710   }
711 -)))
712 712  
713 -(((
667 +
668 +
669 +
670 +
671 +
672 +
714 714  TTN V3 uplink screen shot.
715 -)))
716 716  
717 -[[image:1653274001211-372.png||height="192" width="732"]]
675 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image023.png]]
718 718  
719 -== 3.5 Configure RS485-BL via AT or Downlink ==
677 +1.
678 +11. Configure RS485-BL via AT or Downlink
720 720  
721 721  User can configure RS485-BL via [[AT Commands >>path:#_​Using_the_AT]]or LoRaWAN Downlink Commands
722 722  
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