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Last modified by Xiaoling on 2025/04/23 15:57
From version 29.31
edited by Xiaoling
on 2022/06/02 08:55
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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  
... ... @@ -147,8 +147,6 @@
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"]]
479 479  
480 -
481 481  * Grab different sections.
482 482  
483 483  [[image:1653271657255-576.png||height="305" width="730"]]
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520 520  
521 521  [[image:1653271763403-806.png]]
522 522  
523 -
524 524  === 3.3.4 Compose the uplink payload ===
525 525  
526 526  (((
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549 549  
550 550  [[image:1653272787040-634.png||height="515" width="719"]]
551 551  
552 -
553 553  (((
554 554  (% style="color:#4f81bd" %)**Examples: AT+DATAUP=1**
555 555  )))
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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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