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Last modified by Xiaoling on 2025/04/23 15:57
From version 29.12
edited by Xiaoling
on 2022/06/01 18:02
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To version 28.2
edited by Xiaoling
on 2022/05/23 10:44
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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 ==
... ... @@ -63,7 +63,7 @@
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:**
... ... @@ -104,8 +104,6 @@
104 104  * Support Modbus protocol
105 105  * Support Interrupt uplink
106 106  
107 -
108 -
109 109  == 1.4 Applications ==
110 110  
111 111  * Smart Buildings & Home Automation
... ... @@ -115,13 +115,10 @@
115 115  * Smart Cities
116 116  * Smart Factory
117 117  
118 -
119 -
120 120  == 1.5 Firmware Change log ==
121 121  
122 122  [[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);"]]
123 123  
124 -
125 125  == 1.6 Hardware Change log ==
126 126  
127 127  (((
... ... @@ -148,8 +148,6 @@
148 148  
149 149  (((
150 150  Release version ​​​​​
151 -
152 -
153 153  )))
154 154  
155 155  = 2. Pin mapping and Power ON Device =
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163 163  
164 164  The Left TXD and RXD are TTL interface for external sensor. TTL level is controlled by 3.3/5v Jumper.
165 165  
166 -
167 167  = 3. Operation Mode =
168 168  
169 169  == 3.1 How it works? ==
... ... @@ -170,8 +170,6 @@
170 170  
171 171  (((
172 172  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.
173 -
174 -
175 175  )))
176 176  
177 177  == 3.2 Example to join LoRaWAN network ==
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235 235  == 3.3 Configure Commands to read data ==
236 236  
237 237  (((
238 -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.
239 -
240 -
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.
241 241  )))
242 242  
243 243  === 3.3.1 onfigure UART settings for RS485 or TTL communication ===
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624 624  
625 625  [[image:1653273818896-432.png]]
626 626  
627 -(((
628 628  AT+INTMOD=0  Disable Interrupt
629 -)))
630 630  
631 -(((
632 632  AT+INTMOD=1  Interrupt trigger by rising or falling edge.
633 -)))
634 634  
635 -(((
636 636  AT+INTMOD=2  Interrupt trigger by falling edge. ( Default Value)
637 -)))
638 638  
639 -(((
640 640  AT+INTMOD=3  Interrupt trigger by rising edge.
641 -)))
642 642  
643 643  == 3.4 Uplink Payload ==
644 644  
645 -(% border="1" style="background-color:#4f81bd; color:white; width:850px" %)
646 -|**Size(bytes)**|(% style="width:130px" %)**2**|(% style="width:93px" %)**1**|(% style="width:509px" %)**Length depends on the return from the commands**
647 -|Value|(% style="width:130px" %)(((
648 -(((
622 +|**Size(bytes)**|**2**|**1**|**Length depends on the return from the commands**
623 +|Value|(((
649 649  Battery(mV)
650 -)))
651 651  
652 -(((
653 653  &
654 -)))
655 655  
656 -(((
657 657  Interrupt _Flag
658 -)))
659 -)))|(% style="width:93px" %)(((
629 +)))|(((
660 660  PAYLOAD_VER
661 661  
662 662  
663 -)))|(% 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.
664 664  
665 665  Below is the decoder for the first 3 bytes. The rest bytes are dynamic depends on different RS485 sensors.
666 666  
667 -(((
637 +
668 668  function Decoder(bytes, port) {
669 -)))
670 670  
671 -(((
672 672  ~/~/Payload Formats of RS485-BL Deceive
673 -)))
674 674  
675 -(((
676 676  return {
677 -)))
678 678  
679 -(((
680 680   ~/~/Battery,units:V
681 -)))
682 682  
683 -(((
684 684   BatV:((bytes[0]<<8 | bytes[1])&0x7fff)/1000,
685 -)))
686 686  
687 -(((
688 688   ~/~/GPIO_EXTI 
689 -)))
690 690  
691 -(((
692 692   EXTI_Trigger:(bytes[0] & 0x80)? "TRUE":"FALSE",
693 -)))
694 694  
695 -(((
696 696   ~/~/payload of version
697 -)))
698 698  
699 -(((
700 700   Pay_ver:bytes[2],
701 -)))
702 702  
703 -(((
704 704   };
705 -)))
706 706  
707 -(((
708 708   }
709 -)))
710 710  
711 -(((
660 +
661 +
662 +
663 +
664 +
665 +
712 712  TTN V3 uplink screen shot.
713 -)))
714 714  
715 -[[image:1653274001211-372.png||height="192" width="732"]]
668 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image023.png]]
716 716  
717 -== 3.5 Configure RS485-BL via AT or Downlink ==
670 +1.
671 +11. Configure RS485-BL via AT or Downlink
718 718  
719 719  User can configure RS485-BL via [[AT Commands >>path:#_​Using_the_AT]]or LoRaWAN Downlink Commands
720 720  
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724 724  
725 725  * **Sensor Related Commands**: These commands are special designed for RS485-BL.  User can see these commands below:
726 726  
727 -1.
728 -11.
681 +1.
682 +11.
729 729  111. Common Commands:
730 730  
731 731  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]]
732 732  
733 733  
734 -1.
735 -11.
688 +1.
689 +11.
736 736  111. Sensor related commands:
737 737  
738 738  ==== Choose Device Type (RS485 or TTL) ====
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1038 1038  
1039 1039  
1040 1040  
1041 -1.
995 +1.
1042 1042  11. Buttons
1043 1043  
1044 1044  |**Button**|**Feature**
1045 1045  |**RST**|Reboot RS485-BL
1046 1046  
1047 -1.
1001 +1.
1048 1048  11. +3V3 Output
1049 1049  
1050 1050  RS485-BL has a Controllable +3V3 output, user can use this output to power external sensor.
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1062 1062  By default, the AT+3V3T=0. This is a special case, means the +3V3 output is always on at any time
1063 1063  
1064 1064  
1065 -1.
1019 +1.
1066 1066  11. +5V Output
1067 1067  
1068 1068  RS485-BL has a Controllable +5V output, user can use this output to power external sensor.
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1082 1082  
1083 1083  
1084 1084  
1085 -1.
1039 +1.
1086 1086  11. LEDs
1087 1087  
1088 1088  |**LEDs**|**Feature**
1089 1089  |**LED1**|Blink when device transmit a packet.
1090 1090  
1091 -1.
1045 +1.
1092 1092  11. Switch Jumper
1093 1093  
1094 1094  |**Switch Jumper**|**Feature**
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1134 1134  
1135 1135  
1136 1136  
1137 -1.
1091 +1.
1138 1138  11. Common AT Command Sequence
1139 1139  111. Multi-channel ABP mode (Use with SX1301/LG308)
1140 1140  
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1153 1153  
1154 1154  ATZ
1155 1155  
1156 -1.
1157 -11.
1110 +1.
1111 +11.
1158 1158  111. Single-channel ABP mode (Use with LG01/LG02)
1159 1159  
1160 1160  AT+FDR   Reset Parameters to Factory Default, Keys Reserve
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1229 1229  [[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]]
1230 1230  
1231 1231  
1232 -1.
1186 +1.
1233 1233  11. How to change the LoRa Frequency Bands/Region?
1234 1234  
1235 1235  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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1236 1236  
1237 1237  
1238 1238  
1239 -1.
1193 +1.
1240 1240  11. How many RS485-Slave can RS485-BL connects?
1241 1241  
1242 1242  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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1253 1253  
1254 1254  
1255 1255  
1256 -1.
1210 +1.
1257 1257  11. Why I can’t join TTN V3 in US915 /AU915 bands?
1258 1258  
1259 1259  It might about the channels mapping. Please see for detail.
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