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Last modified by Xiaoling on 2025/04/23 15:57
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edited by Xiaoling
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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
... ... @@ -65,6 +65,8 @@
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:**
... ... @@ -118,12 +118,9 @@
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? ==
... ... @@ -169,8 +169,6 @@
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  (((
... ... @@ -338,9 +338,8 @@
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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471 471  
472 472  [[image:1653271581490-837.png||height="313" width="722"]]
473 473  
474 -
475 475  * Grab a section.
476 476  
477 477  [[image:1653271648378-342.png||height="326" width="720"]]
... ... @@ -582,18 +582,21 @@
582 582  
583 583  So totally there will be 3 uplinks for this sampling, each uplink includes 6 bytes DATA
584 584  
585 -DATA1=RETURN1 Valid Value = (% style="background-color:#4f81bd; color:white" %) 20 20 0a 33 90 41
568 +DATA1=RETURN1 Valid Value = ~(% style="background-color:#4f81bd;color:white" %)(% style="display:none" %) (%%)20 20 0a 33 90 41
586 586  
587 -DATA2=1^^st^^ ~~ 6^^th^^ byte of Valid value of RETURN10= (% style="background-color:#4f81bd; color:white" %)02 aa 05 81 0a 20
570 +DATA2=1^^st^^ ~~ 6^^th^^ byte of Valid value of RETURN10= ~(% style="background-color:#4f81bd;color:white" %)(% style="display:none" %) (%%)02 aa 05 81 0a 20
588 588  
589 -DATA3=7^^th^^ ~~ 11^^th^^ bytes of Valid value of RETURN10 =(% style="background-color:#4f81bd; color:white" %) 20 20 20 2d 30
572 +DATA3=7^^th^^ ~~ 11^^th^^ bytes of Valid value of RETURN10 =~(% style="background-color:#4f81bd;color:white" %)(% style="display:none" %) (%%) 20 20 20 2d 30
590 590  
574 +
575 +
591 591  Below are the uplink payloads:
592 592  
593 -[[image:1653272901032-107.png]]
578 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image021.png]]
594 594  
595 -(% style="color:red" %)Notice: the Max bytes is according to the max support bytes in different Frequency Bands for lowest SF. As below:
596 596  
581 +Notice: the Max bytes is according to the max support bytes in different Frequency Bands for lowest SF. As below:
582 +
597 597   ~* For AU915/AS923 bands, if UplinkDwell time=0, max 51 bytes for each uplink ( so 51 -5 = 46 max valid date)
598 598  
599 599   * For AU915/AS923 bands, if UplinkDwell time=1, max 11 bytes for each uplink ( so 11 -5 = 6 max valid date).
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602 602  
603 603   ~* For all other bands: max 51 bytes for each uplink  ( so 51 -5 = 46 max valid date).
604 604  
605 -=== 3.3.5 Uplink on demand ===
606 606  
607 -(((
592 +
593 +1.
594 +11.
595 +111. Uplink on demand
596 +
608 608  Except uplink periodically, RS485-BL is able to uplink on demand. The server sends downlink command to RS485-BL and RS485 will uplink data base on the command.
609 -)))
610 610  
611 -(((
612 612  Downlink control command:
613 -)))
614 614  
615 -(((
616 -**0x08 command**: Poll an uplink with current command set in RS485-BL.
617 -)))
601 +[[0x08 command>>path:#downlink_08]]: Poll an uplink with current command set in RS485-BL.
618 618  
619 -(((
620 -**0xA8 command**: Send a command to RS485-BL and uplink the output from sensors.
621 -)))
603 +[[0xA8 command>>path:#downlink_A8]]: Send a command to RS485-BL and uplink the output from sensors.
622 622  
623 -=== 3.3.6 Uplink on Interrupt ===
624 624  
625 -Put the interrupt sensor between 3.3v_out and GPIO ext.
626 626  
627 -[[image:1653273818896-432.png]]
607 +1.
608 +11.
609 +111. Uplink on Interrupt
628 628  
629 -(((
611 +Put the interrupt sensor between 3.3v_out and GPIO ext.[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image022.png]]
612 +
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 -== 3.4 Uplink Payload ==
646 646  
647 -(% border="1" style="background-color:#4f81bd; color:white; width:850px" %)
648 -|**Size(bytes)**|(% style="width:130px" %)**2**|(% style="width:93px" %)**1**|(% style="width:509px" %)**Length depends on the return from the commands**
649 -|Value|(% style="width:130px" %)(((
650 -(((
622 +1.
623 +11. Uplink Payload
624 +
625 +|**Size(bytes)**|**2**|**1**|**Length depends on the return from the commands**
626 +|Value|(((
651 651  Battery(mV)
652 -)))
653 653  
654 -(((
655 655  &
656 -)))
657 657  
658 -(((
659 659  Interrupt _Flag
660 -)))
661 -)))|(% style="width:93px" %)(((
632 +)))|(((
662 662  PAYLOAD_VER
663 663  
664 664  
665 -)))|(% 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.
636 +)))|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.
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 -(((
640 +
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 -(((
663 +
664 +
665 +
666 +
667 +
668 +
714 714  TTN V3 uplink screen shot.
715 -)))
716 716  
717 -[[image:1653274001211-372.png||height="192" width="732"]]
671 +[[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 ==
673 +1.
674 +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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