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Last modified by Xiaoling on 2025/04/23 15:57
From version 29.23
edited by Xiaoling
on 2022/06/01 18:11
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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 ==
... ... @@ -25,19 +25,19 @@
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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234 234  
235 235  [[image:1652953568895-172.png||height="232" width="724"]]
236 236  
237 -
238 238  == 3.3 Configure Commands to read data ==
239 239  
240 240  (((
241 -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.
242 -
243 -
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.
244 244  )))
245 245  
246 246  === 3.3.1 onfigure UART settings for RS485 or TTL communication ===
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321 321  )))
322 322  )))
323 323  
324 -
325 -
326 326  === 3.3.2 Configure sensors ===
327 327  
328 328  (((
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343 343  mm: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
344 344  )))|(% style="width:256px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
345 345  
346 -Detail of AT+CFGDEV command see [[AT+CFGDEV detail>>||anchor="HRS485DebugCommand28AT2BCFGDEV29]].
326 +Detail of AT+CFGDEV command see [[AT+CFGDEV detail>>path:#AT_CFGDEV]].
347 347  
348 -
349 349  === 3.3.3 Configure read commands for each sampling ===
350 350  
351 351  (((
... ... @@ -630,97 +630,66 @@
630 630  
631 631  [[image:1653273818896-432.png]]
632 632  
633 -(((
634 634  AT+INTMOD=0  Disable Interrupt
635 -)))
636 636  
637 -(((
638 638  AT+INTMOD=1  Interrupt trigger by rising or falling edge.
639 -)))
640 640  
641 -(((
642 642  AT+INTMOD=2  Interrupt trigger by falling edge. ( Default Value)
643 -)))
644 644  
645 -(((
646 646  AT+INTMOD=3  Interrupt trigger by rising edge.
647 -)))
648 648  
649 649  == 3.4 Uplink Payload ==
650 650  
651 -(% border="1" style="background-color:#4f81bd; color:white; width:850px" %)
652 -|**Size(bytes)**|(% style="width:130px" %)**2**|(% style="width:93px" %)**1**|(% style="width:509px" %)**Length depends on the return from the commands**
653 -|Value|(% style="width:130px" %)(((
654 -(((
622 +|**Size(bytes)**|**2**|**1**|**Length depends on the return from the commands**
623 +|Value|(((
655 655  Battery(mV)
656 -)))
657 657  
658 -(((
659 659  &
660 -)))
661 661  
662 -(((
663 663  Interrupt _Flag
664 -)))
665 -)))|(% style="width:93px" %)(((
629 +)))|(((
666 666  PAYLOAD_VER
667 667  
668 668  
669 -)))|(% 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.
670 670  
671 671  Below is the decoder for the first 3 bytes. The rest bytes are dynamic depends on different RS485 sensors.
672 672  
673 -(((
637 +
674 674  function Decoder(bytes, port) {
675 -)))
676 676  
677 -(((
678 678  ~/~/Payload Formats of RS485-BL Deceive
679 -)))
680 680  
681 -(((
682 682  return {
683 -)))
684 684  
685 -(((
686 686   ~/~/Battery,units:V
687 -)))
688 688  
689 -(((
690 690   BatV:((bytes[0]<<8 | bytes[1])&0x7fff)/1000,
691 -)))
692 692  
693 -(((
694 694   ~/~/GPIO_EXTI 
695 -)))
696 696  
697 -(((
698 698   EXTI_Trigger:(bytes[0] & 0x80)? "TRUE":"FALSE",
699 -)))
700 700  
701 -(((
702 702   ~/~/payload of version
703 -)))
704 704  
705 -(((
706 706   Pay_ver:bytes[2],
707 -)))
708 708  
709 -(((
710 710   };
711 -)))
712 712  
713 -(((
714 714   }
715 -)))
716 716  
717 -(((
660 +
661 +
662 +
663 +
664 +
665 +
718 718  TTN V3 uplink screen shot.
719 -)))
720 720  
721 -[[image:1653274001211-372.png||height="192" width="732"]]
668 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image023.png]]
722 722  
723 -== 3.5 Configure RS485-BL via AT or Downlink ==
670 +1.
671 +11. Configure RS485-BL via AT or Downlink
724 724  
725 725  User can configure RS485-BL via [[AT Commands >>path:#_​Using_the_AT]]or LoRaWAN Downlink Commands
726 726  
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