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Last modified by Xiaoling on 2025/04/23 15:57
From version 28.3
edited by Xiaoling
on 2022/05/23 10:46
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To version 29.15
edited by Xiaoling
on 2022/06/01 18:05
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7 7  **RS485-BL – Waterproof RS485 to LoRaWAN Converter User Manual**
8 8  
9 9  
10 +
10 10  **Table of Contents:**
11 11  
13 +{{toc/}}
12 12  
13 13  
14 14  
15 15  
18 +
16 16  = 1.Introduction =
17 17  
18 18  == 1.1 What is RS485-BL RS485 to LoRaWAN Converter ==
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22 22  )))
23 23  
24 24  (((
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.
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.
26 26  )))
27 27  
28 28  (((
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.
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.
30 30  )))
31 31  
32 32  (((
33 -RS485-BL is IP67 **waterproof** and powered by **8500mAh Li-SOCI2 battery**, it is designed for long term use for several years.
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.
34 34  )))
35 35  
36 36  (((
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.
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.
38 38  )))
39 39  
40 40  (((
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51 51  
52 52  [[image:1652953304999-717.png||height="424" width="733"]]
53 53  
57 +
58 +
54 54  == 1.2 Specifications ==
55 55  
56 56  **Hardware System:**
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90 90  * 127 dB Dynamic Range RSSI.
91 91  * Automatic RF Sense and CAD with ultra-fast AFC. ​​​
92 92  
98 +
93 93  == 1.3 Features ==
94 94  
95 95  * LoRaWAN Class A & Class C protocol (default Class A)
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101 101  * Support Modbus protocol
102 102  * Support Interrupt uplink
103 103  
110 +
104 104  == 1.4 Applications ==
105 105  
106 106  * Smart Buildings & Home Automation
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110 110  * Smart Cities
111 111  * Smart Factory
112 112  
120 +
113 113  == 1.5 Firmware Change log ==
114 114  
115 115  [[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);"]]
116 116  
125 +
117 117  == 1.6 Hardware Change log ==
118 118  
119 119  (((
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140 140  
141 141  (((
142 142  Release version ​​​​​
152 +
153 +
143 143  )))
144 144  
145 145  = 2. Pin mapping and Power ON Device =
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153 153  
154 154  The Left TXD and RXD are TTL interface for external sensor. TTL level is controlled by 3.3/5v Jumper.
155 155  
167 +
156 156  = 3. Operation Mode =
157 157  
158 158  == 3.1 How it works? ==
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159 159  
160 160  (((
161 161  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 +
162 162  )))
163 163  
164 164  == 3.2 Example to join LoRaWAN network ==
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222 222  == 3.3 Configure Commands to read data ==
223 223  
224 224  (((
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.
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 +
226 226  )))
227 227  
228 228  === 3.3.1 onfigure UART settings for RS485 or TTL communication ===
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609 609  
610 610  [[image:1653273818896-432.png]]
611 611  
628 +(((
612 612  AT+INTMOD=0  Disable Interrupt
630 +)))
613 613  
632 +(((
614 614  AT+INTMOD=1  Interrupt trigger by rising or falling edge.
634 +)))
615 615  
636 +(((
616 616  AT+INTMOD=2  Interrupt trigger by falling edge. ( Default Value)
638 +)))
617 617  
640 +(((
618 618  AT+INTMOD=3  Interrupt trigger by rising edge.
642 +)))
619 619  
620 620  == 3.4 Uplink Payload ==
621 621  
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641 641  
642 642  Below is the decoder for the first 3 bytes. The rest bytes are dynamic depends on different RS485 sensors.
643 643  
644 -
668 +(((
645 645  function Decoder(bytes, port) {
670 +)))
646 646  
672 +(((
647 647  ~/~/Payload Formats of RS485-BL Deceive
674 +)))
648 648  
676 +(((
649 649  return {
678 +)))
650 650  
680 +(((
651 651   ~/~/Battery,units:V
682 +)))
652 652  
684 +(((
653 653   BatV:((bytes[0]<<8 | bytes[1])&0x7fff)/1000,
686 +)))
654 654  
688 +(((
655 655   ~/~/GPIO_EXTI 
690 +)))
656 656  
692 +(((
657 657   EXTI_Trigger:(bytes[0] & 0x80)? "TRUE":"FALSE",
694 +)))
658 658  
696 +(((
659 659   ~/~/payload of version
698 +)))
660 660  
700 +(((
661 661   Pay_ver:bytes[2],
702 +)))
662 662  
704 +(((
663 663   };
706 +)))
664 664  
708 +(((
665 665   }
710 +)))
666 666  
667 -
668 -
669 -
670 -
671 -
672 -
712 +(((
673 673  TTN V3 uplink screen shot.
714 +)))
674 674  
675 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image023.png]]
716 +[[image:1653274001211-372.png||height="192" width="732"]]
676 676  
677 -1.
678 -11. Configure RS485-BL via AT or Downlink
718 +== 3.5 Configure RS485-BL via AT or Downlink ==
679 679  
680 680  User can configure RS485-BL via [[AT Commands >>path:#_​Using_the_AT]]or LoRaWAN Downlink Commands
681 681  
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