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Last modified by Xiaoling on 2025/04/23 15:57
From version 29.28
edited by Xiaoling
on 2022/06/02 08:54
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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 -
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 70  **Interface for Model:**
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118 118  
119 119  [[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);"]]
120 120  
121 -
122 122  == 1.6 Hardware Change log ==
123 123  
124 124  (((
125 -
126 -
127 127  v1.4
128 128  )))
129 129  
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147 147  
148 148  (((
149 149  Release version ​​​​​
150 -
151 -
152 152  )))
153 153  
154 154  = 2. Pin mapping and Power ON Device =
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162 162  
163 163  The Left TXD and RXD are TTL interface for external sensor. TTL level is controlled by 3.3/5v Jumper.
164 164  
165 -
166 166  = 3. Operation Mode =
167 167  
168 168  == 3.1 How it works? ==
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169 169  
170 170  (((
171 171  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.
172 -
173 -
174 174  )))
175 175  
176 176  == 3.2 Example to join LoRaWAN network ==
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206 206  )))
207 207  
208 208  
197 +
198 +
209 209  [[image:image-20220519174512-1.png]]
210 210  
211 211  [[image:image-20220519174512-2.png||height="328" width="731"]]
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229 229  
230 230  [[image:1652953568895-172.png||height="232" width="724"]]
231 231  
232 -
233 233  == 3.3 Configure Commands to read data ==
234 234  
235 235  (((
236 -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.
237 -
238 -
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.
239 239  )))
240 240  
241 241  === 3.3.1 onfigure UART settings for RS485 or TTL communication ===
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316 316  )))
317 317  )))
318 318  
319 -
320 -
321 321  === 3.3.2 Configure sensors ===
322 322  
323 323  (((
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338 338  mm: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
339 339  )))|(% style="width:256px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
340 340  
341 -Detail of AT+CFGDEV command see [[AT+CFGDEV detail>>||anchor="HRS485DebugCommand28AT2BCFGDEV29"]].
326 +Detail of AT+CFGDEV command see [[AT+CFGDEV detail>>path:#AT_CFGDEV]].
342 342  
343 -
344 344  === 3.3.3 Configure read commands for each sampling ===
345 345  
346 346  (((
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438 438  
439 439  **Examples:**
440 440  
441 -1）For a return string from AT+COMMAND1: 16 0c 1e 56 34 2e 30 58 5f 36 41 30 31 00 49
425 +1. For a return string from AT+COMMAND1: 16 0c 1e 56 34 2e 30 58 5f 36 41 30 31 00 49
442 442  
443 443  If we set AT+SEARCH1=1,1E 56 34.      (max 5 bytes for prefix)
444 444  
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446 446  
447 447  [[image:1653271044481-711.png]]
448 448  
449 -2）For a return string from AT+COMMAND1:  16 0c 1e 56 34 2e 30 58 5f 36 41 30 31 00 49
433 +1. For a return string from AT+COMMAND1:  16 0c 1e 56 34 2e 30 58 5f 36 41 30 31 00 49
450 450  
451 451  If we set AT+SEARCH1=2, 1E 56 34+31 00 49
452 452  
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465 465  * **c: define the position for valid value.  **
466 466  )))
467 467  
452 +Examples:
468 468  
469 -**Examples:**
470 -
471 471  * Grab bytes:
472 472  
473 473  [[image:1653271581490-837.png||height="313" width="722"]]
474 474  
475 -
476 476  * Grab a section.
477 477  
478 478  [[image:1653271648378-342.png||height="326" width="720"]]
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627 627  
628 628  [[image:1653273818896-432.png]]
629 629  
630 -(((
631 631  AT+INTMOD=0  Disable Interrupt
632 -)))
633 633  
634 -(((
635 635  AT+INTMOD=1  Interrupt trigger by rising or falling edge.
636 -)))
637 637  
638 -(((
639 639  AT+INTMOD=2  Interrupt trigger by falling edge. ( Default Value)
640 -)))
641 641  
642 -(((
643 643  AT+INTMOD=3  Interrupt trigger by rising edge.
644 -)))
645 645  
646 646  == 3.4 Uplink Payload ==
647 647  
648 -(% border="1" style="background-color:#4f81bd; color:white; width:850px" %)
649 -|**Size(bytes)**|(% style="width:130px" %)**2**|(% style="width:93px" %)**1**|(% style="width:509px" %)**Length depends on the return from the commands**
650 -|Value|(% style="width:130px" %)(((
651 -(((
622 +|**Size(bytes)**|**2**|**1**|**Length depends on the return from the commands**
623 +|Value|(((
652 652  Battery(mV)
653 -)))
654 654  
655 -(((
656 656  &
657 -)))
658 658  
659 -(((
660 660  Interrupt _Flag
661 -)))
662 -)))|(% style="width:93px" %)(((
629 +)))|(((
663 663  PAYLOAD_VER
664 664  
665 665  
666 -)))|(% 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.
667 667  
668 668  Below is the decoder for the first 3 bytes. The rest bytes are dynamic depends on different RS485 sensors.
669 669  
670 -(((
637 +
671 671  function Decoder(bytes, port) {
672 -)))
673 673  
674 -(((
675 675  ~/~/Payload Formats of RS485-BL Deceive
676 -)))
677 677  
678 -(((
679 679  return {
680 -)))
681 681  
682 -(((
683 683   ~/~/Battery,units:V
684 -)))
685 685  
686 -(((
687 687   BatV:((bytes[0]<<8 | bytes[1])&0x7fff)/1000,
688 -)))
689 689  
690 -(((
691 691   ~/~/GPIO_EXTI 
692 -)))
693 693  
694 -(((
695 695   EXTI_Trigger:(bytes[0] & 0x80)? "TRUE":"FALSE",
696 -)))
697 697  
698 -(((
699 699   ~/~/payload of version
700 -)))
701 701  
702 -(((
703 703   Pay_ver:bytes[2],
704 -)))
705 705  
706 -(((
707 707   };
708 -)))
709 709  
710 -(((
711 711   }
712 -)))
713 713  
714 -(((
660 +
661 +
662 +
663 +
664 +
665 +
715 715  TTN V3 uplink screen shot.
716 -)))
717 717  
718 -[[image:1653274001211-372.png||height="192" width="732"]]
668 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image023.png]]
719 719  
720 -== 3.5 Configure RS485-BL via AT or Downlink ==
670 +1.
671 +11. Configure RS485-BL via AT or Downlink
721 721  
722 722  User can configure RS485-BL via [[AT Commands >>path:#_​Using_the_AT]]or LoRaWAN Downlink Commands
723 723  
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