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Last modified by Xiaoling on 2025/04/23 15:57
From version 28.3
edited by Xiaoling
on 2022/05/23 10:46
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To version 29.9
edited by Xiaoling
on 2022/06/01 18:01
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7 7  **RS485-BL – Waterproof RS485 to LoRaWAN Converter User Manual**
8 8  
9 9  
10 +
10 10  **Table of Contents:**
11 11  
13 +{{toc/}}
12 12  
13 13  
14 14  
15 15  
18 +
16 16  = 1.Introduction =
17 17  
18 18  == 1.1 What is RS485-BL RS485 to LoRaWAN Converter ==
... ... @@ -60,7 +60,7 @@
60 60  * Power Consumption (exclude RS485 device):
61 61  ** Idle: 6uA@3.3v
62 62  
63 -*
66 +*
64 64  ** 20dB Transmit: 130mA@3.3v
65 65  
66 66  **Interface for Model:**
... ... @@ -140,6 +140,8 @@
140 140  
141 141  (((
142 142  Release version ​​​​​
146 +
147 +
143 143  )))
144 144  
145 145  = 2. Pin mapping and Power ON Device =
... ... @@ -153,6 +153,7 @@
153 153  
154 154  The Left TXD and RXD are TTL interface for external sensor. TTL level is controlled by 3.3/5v Jumper.
155 155  
161 +
156 156  = 3. Operation Mode =
157 157  
158 158  == 3.1 How it works? ==
... ... @@ -159,6 +159,8 @@
159 159  
160 160  (((
161 161  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 +
162 162  )))
163 163  
164 164  == 3.2 Example to join LoRaWAN network ==
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222 222  == 3.3 Configure Commands to read data ==
223 223  
224 224  (((
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.
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 +
226 226  )))
227 227  
228 228  === 3.3.1 onfigure UART settings for RS485 or TTL communication ===
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609 609  
610 610  [[image:1653273818896-432.png]]
611 611  
622 +(((
612 612  AT+INTMOD=0  Disable Interrupt
624 +)))
613 613  
626 +(((
614 614  AT+INTMOD=1  Interrupt trigger by rising or falling edge.
628 +)))
615 615  
630 +(((
616 616  AT+INTMOD=2  Interrupt trigger by falling edge. ( Default Value)
632 +)))
617 617  
634 +(((
618 618  AT+INTMOD=3  Interrupt trigger by rising edge.
636 +)))
619 619  
620 620  == 3.4 Uplink Payload ==
621 621  
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641 641  
642 642  Below is the decoder for the first 3 bytes. The rest bytes are dynamic depends on different RS485 sensors.
643 643  
644 -
662 +(((
645 645  function Decoder(bytes, port) {
664 +)))
646 646  
666 +(((
647 647  ~/~/Payload Formats of RS485-BL Deceive
668 +)))
648 648  
670 +(((
649 649  return {
672 +)))
650 650  
674 +(((
651 651   ~/~/Battery,units:V
676 +)))
652 652  
678 +(((
653 653   BatV:((bytes[0]<<8 | bytes[1])&0x7fff)/1000,
680 +)))
654 654  
682 +(((
655 655   ~/~/GPIO_EXTI 
684 +)))
656 656  
686 +(((
657 657   EXTI_Trigger:(bytes[0] & 0x80)? "TRUE":"FALSE",
688 +)))
658 658  
690 +(((
659 659   ~/~/payload of version
692 +)))
660 660  
694 +(((
661 661   Pay_ver:bytes[2],
696 +)))
662 662  
698 +(((
663 663   };
700 +)))
664 664  
702 +(((
665 665   }
704 +)))
666 666  
667 -
668 -
669 -
670 -
671 -
672 -
706 +(((
673 673  TTN V3 uplink screen shot.
708 +)))
674 674  
675 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image023.png]]
710 +[[image:1653274001211-372.png||height="192" width="732"]]
676 676  
677 -1.
678 -11. Configure RS485-BL via AT or Downlink
712 +== 3.5 Configure RS485-BL via AT or Downlink ==
679 679  
680 680  User can configure RS485-BL via [[AT Commands >>path:#_​Using_the_AT]]or LoRaWAN Downlink Commands
681 681  
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685 685  
686 686  * **Sensor Related Commands**: These commands are special designed for RS485-BL.  User can see these commands below:
687 687  
688 -1.
689 -11.
722 +1.
723 +11.
690 690  111. Common Commands:
691 691  
692 692  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]]
693 693  
694 694  
695 -1.
696 -11.
729 +1.
730 +11.
697 697  111. Sensor related commands:
698 698  
699 699  ==== Choose Device Type (RS485 or TTL) ====
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999 999  
1000 1000  
1001 1001  
1002 -1.
1036 +1.
1003 1003  11. Buttons
1004 1004  
1005 1005  |**Button**|**Feature**
1006 1006  |**RST**|Reboot RS485-BL
1007 1007  
1008 -1.
1042 +1.
1009 1009  11. +3V3 Output
1010 1010  
1011 1011  RS485-BL has a Controllable +3V3 output, user can use this output to power external sensor.
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1023 1023  By default, the AT+3V3T=0. This is a special case, means the +3V3 output is always on at any time
1024 1024  
1025 1025  
1026 -1.
1060 +1.
1027 1027  11. +5V Output
1028 1028  
1029 1029  RS485-BL has a Controllable +5V output, user can use this output to power external sensor.
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1043 1043  
1044 1044  
1045 1045  
1046 -1.
1080 +1.
1047 1047  11. LEDs
1048 1048  
1049 1049  |**LEDs**|**Feature**
1050 1050  |**LED1**|Blink when device transmit a packet.
1051 1051  
1052 -1.
1086 +1.
1053 1053  11. Switch Jumper
1054 1054  
1055 1055  |**Switch Jumper**|**Feature**
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1095 1095  
1096 1096  
1097 1097  
1098 -1.
1132 +1.
1099 1099  11. Common AT Command Sequence
1100 1100  111. Multi-channel ABP mode (Use with SX1301/LG308)
1101 1101  
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1114 1114  
1115 1115  ATZ
1116 1116  
1117 -1.
1118 -11.
1151 +1.
1152 +11.
1119 1119  111. Single-channel ABP mode (Use with LG01/LG02)
1120 1120  
1121 1121  AT+FDR   Reset Parameters to Factory Default, Keys Reserve
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1190 1190  [[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]]
1191 1191  
1192 1192  
1193 -1.
1227 +1.
1194 1194  11. How to change the LoRa Frequency Bands/Region?
1195 1195  
1196 1196  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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1197 1197  
1198 1198  
1199 1199  
1200 -1.
1234 +1.
1201 1201  11. How many RS485-Slave can RS485-BL connects?
1202 1202  
1203 1203  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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1214 1214  
1215 1215  
1216 1216  
1217 -1.
1251 +1.
1218 1218  11. Why I can’t join TTN V3 in US915 /AU915 bands?
1219 1219  
1220 1220  It might about the channels mapping. Please see for detail.
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