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Last modified by Xiaoling on 2025/04/23 15:57
From version 29.9
edited by Xiaoling
on 2022/06/01 18:01
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To version 28.4
edited by Xiaoling
on 2022/05/23 10:46
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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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63 63  * Power Consumption (exclude RS485 device):
64 64  ** Idle: 6uA@3.3v
65 65  
66 -*
63 +*
67 67  ** 20dB Transmit: 130mA@3.3v
68 68  
69 69  **Interface for Model:**
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143 143  
144 144  (((
145 145  Release version ​​​​​
146 -
147 -
148 148  )))
149 149  
150 150  = 2. Pin mapping and Power ON Device =
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158 158  
159 159  The Left TXD and RXD are TTL interface for external sensor. TTL level is controlled by 3.3/5v Jumper.
160 160  
161 -
162 162  = 3. Operation Mode =
163 163  
164 164  == 3.1 How it works? ==
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165 165  
166 166  (((
167 167  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.
168 -
169 -
170 170  )))
171 171  
172 172  == 3.2 Example to join LoRaWAN network ==
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230 230  == 3.3 Configure Commands to read data ==
231 231  
232 232  (((
233 -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.
234 -
235 -
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.
236 236  )))
237 237  
238 238  === 3.3.1 onfigure UART settings for RS485 or TTL communication ===
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659 659  
660 660  Below is the decoder for the first 3 bytes. The rest bytes are dynamic depends on different RS485 sensors.
661 661  
662 -(((
652 +
663 663  function Decoder(bytes, port) {
664 -)))
665 665  
666 -(((
667 667  ~/~/Payload Formats of RS485-BL Deceive
668 -)))
669 669  
670 -(((
671 671  return {
672 -)))
673 673  
674 -(((
675 675   ~/~/Battery,units:V
676 -)))
677 677  
678 -(((
679 679   BatV:((bytes[0]<<8 | bytes[1])&0x7fff)/1000,
680 -)))
681 681  
682 -(((
683 683   ~/~/GPIO_EXTI 
684 -)))
685 685  
686 -(((
687 687   EXTI_Trigger:(bytes[0] & 0x80)? "TRUE":"FALSE",
688 -)))
689 689  
690 -(((
691 691   ~/~/payload of version
692 -)))
693 693  
694 -(((
695 695   Pay_ver:bytes[2],
696 -)))
697 697  
698 -(((
699 699   };
700 -)))
701 701  
702 -(((
703 703   }
704 -)))
705 705  
706 -(((
675 +
676 +
677 +
678 +
679 +
680 +
707 707  TTN V3 uplink screen shot.
708 -)))
709 709  
710 -[[image:1653274001211-372.png||height="192" width="732"]]
683 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image023.png]]
711 711  
712 -== 3.5 Configure RS485-BL via AT or Downlink ==
685 +1.
686 +11. Configure RS485-BL via AT or Downlink
713 713  
714 714  User can configure RS485-BL via [[AT Commands >>path:#_​Using_the_AT]]or LoRaWAN Downlink Commands
715 715  
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719 719  
720 720  * **Sensor Related Commands**: These commands are special designed for RS485-BL.  User can see these commands below:
721 721  
722 -1.
723 -11.
696 +1.
697 +11.
724 724  111. Common Commands:
725 725  
726 726  They should be available for each of Dragino Sensors, such as: change uplink interval, reset device. For firmware v1.3, user can find what common commands it supports: [[http:~~/~~/wiki.dragino.com/index.php?title=End_Device_AT_Commands_and_Downlink_Commands>>url:http://wiki.dragino.com/index.php?title=End_Device_AT_Commands_and_Downlink_Commands]]
727 727  
728 728  
729 -1.
730 -11.
703 +1.
704 +11.
731 731  111. Sensor related commands:
732 732  
733 733  ==== Choose Device Type (RS485 or TTL) ====
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1033 1033  
1034 1034  
1035 1035  
1036 -1.
1010 +1.
1037 1037  11. Buttons
1038 1038  
1039 1039  |**Button**|**Feature**
1040 1040  |**RST**|Reboot RS485-BL
1041 1041  
1042 -1.
1016 +1.
1043 1043  11. +3V3 Output
1044 1044  
1045 1045  RS485-BL has a Controllable +3V3 output, user can use this output to power external sensor.
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1057 1057  By default, the AT+3V3T=0. This is a special case, means the +3V3 output is always on at any time
1058 1058  
1059 1059  
1060 -1.
1034 +1.
1061 1061  11. +5V Output
1062 1062  
1063 1063  RS485-BL has a Controllable +5V output, user can use this output to power external sensor.
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1077 1077  
1078 1078  
1079 1079  
1080 -1.
1054 +1.
1081 1081  11. LEDs
1082 1082  
1083 1083  |**LEDs**|**Feature**
1084 1084  |**LED1**|Blink when device transmit a packet.
1085 1085  
1086 -1.
1060 +1.
1087 1087  11. Switch Jumper
1088 1088  
1089 1089  |**Switch Jumper**|**Feature**
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1129 1129  
1130 1130  
1131 1131  
1132 -1.
1106 +1.
1133 1133  11. Common AT Command Sequence
1134 1134  111. Multi-channel ABP mode (Use with SX1301/LG308)
1135 1135  
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1148 1148  
1149 1149  ATZ
1150 1150  
1151 -1.
1152 -11.
1125 +1.
1126 +11.
1153 1153  111. Single-channel ABP mode (Use with LG01/LG02)
1154 1154  
1155 1155  AT+FDR   Reset Parameters to Factory Default, Keys Reserve
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1224 1224  [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image035.png]] [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image036.png]]
1225 1225  
1226 1226  
1227 -1.
1201 +1.
1228 1228  11. How to change the LoRa Frequency Bands/Region?
1229 1229  
1230 1230  User can follow the introduction for [[how to upgrade image>>path:#upgrade_image]]. When download the images, choose the required image file for download.
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1231 1231  
1232 1232  
1233 1233  
1234 -1.
1208 +1.
1235 1235  11. How many RS485-Slave can RS485-BL connects?
1236 1236  
1237 1237  The RS485-BL can support max 32 RS485 devices. Each uplink command of RS485-BL can support max 16 different RS485 command. So RS485-BL can support max 16 RS485 devices pre-program in the device for uplink. For other devices no pre-program, user can use the [[downlink message (type code 0xA8) to poll their info>>path:#downlink_A8]].
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1248 1248  
1249 1249  
1250 1250  
1251 -1.
1225 +1.
1252 1252  11. Why I can’t join TTN V3 in US915 /AU915 bands?
1253 1253  
1254 1254  It might about the channels mapping. Please see for detail.
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