Changes for page RS485-LN – RS485 to LoRaWAN Converter User Manual
Last modified by Karry Zhuang on 2025/03/06 16:34
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... ... @@ -41,17 +41,17 @@ 41 41 **Hardware System:** 42 42 43 43 * STM32L072CZT6 MCU 44 -* SX1276/78 Wireless Chip 44 +* SX1276/78 Wireless Chip 45 45 * Power Consumption (exclude RS485 device): 46 46 ** Idle: 32mA@12v 47 47 48 -* 48 +* 49 49 ** 20dB Transmit: 65mA@12v 50 50 51 51 **Interface for Model:** 52 52 53 53 * RS485 54 -* Power Input 7~~ 24V DC. 54 +* Power Input 7~~ 24V DC. 55 55 56 56 **LoRa Spec:** 57 57 ... ... @@ -138,24 +138,29 @@ 138 138 [[image:1653268155545-638.png||height="334" width="724"]] 139 139 140 140 ((( 141 -The RS485-BL in this example connected to two RS485 devices for demonstration, user can connect to other RS485 devices via the same method. 142 -))) 141 +The RS485-LN in this example connected to two RS485 devices for demonstration, user can connect to other RS485 devices via the same method. The connection is as below: 143 143 143 +485A+ and 485B- of the sensor are connected to RS485A and RA485B of RS485-LN respectively. 144 + 145 +[[image:1653268227651-549.png||height="592" width="720"]] 146 + 144 144 ((( 145 -The LG308 is already set to connect to [[TTN V3 network >> url:https://www.thethingsnetwork.org/]]. So what we need to now is only configure the TTN V3:148 +The LG308 is already set to connect to [[TTN V3 network >>path:eu1.cloud.thethings.network/]]. So what we need to now is only configure the TTN V3: 146 146 ))) 147 147 148 148 ((( 149 -**Step 1**: Create a device in TTN V3 with the OTAA keys from RS485- BL.152 +**Step 1**: Create a device in TTN V3 with the OTAA keys from RS485-LN. 150 150 ))) 151 151 152 152 ((( 153 -Each RS485- BL is shipped with a sticker with unique device EUI:156 +Each RS485-LN is shipped with a sticker with unique device EUI: 154 154 ))) 158 +))) 155 155 156 156 [[image:1652953462722-299.png]] 157 157 158 158 ((( 163 +((( 159 159 User can enter this key in their LoRaWAN Server portal. Below is TTN V3 screen shot: 160 160 ))) 161 161 ... ... @@ -162,13 +162,11 @@ 162 162 ((( 163 163 Add APP EUI in the application. 164 164 ))) 170 +))) 165 165 166 - 167 - 168 - 169 169 [[image:image-20220519174512-1.png]] 170 170 171 -[[image:image-20220519174512-2.png||height="32 8" width="731"]]174 +[[image:image-20220519174512-2.png||height="323" width="720"]] 172 172 173 173 [[image:image-20220519174512-3.png||height="556" width="724"]] 174 174 ... ... @@ -184,7 +184,7 @@ 184 184 185 185 186 186 ((( 187 -**Step 2**: Power on RS485- BL and it will auto join to the TTN V3 network. After join success, it will start to upload message to TTN V3 and user can see in the panel.190 +**Step 2**: Power on RS485-LN and it will auto join to the TTN V3 network. After join success, it will start to upload message to TTN V3 and user can see in the panel. 188 188 ))) 189 189 190 190 [[image:1652953568895-172.png||height="232" width="724"]] ... ... @@ -192,23 +192,19 @@ 192 192 == 3.3 Configure Commands to read data == 193 193 194 194 ((( 195 -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. 198 +((( 199 +There are plenty of RS485 devices in the market and each device has different command to read the valid data. To support these devices in flexible, RS485-LN supports flexible command set. User can use [[AT Commands>>path:#AT_COMMAND]] or LoRaWAN Downlink Command to configure what commands RS485-LN should send for each sampling and how to handle the return from RS485 devices. 196 196 ))) 197 197 202 +((( 203 +(% style="color:red" %)Note: below description and commands are for firmware version >v1.1, if you have firmware version v1.0. Please check the [[user manual v1.0>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/&file=RS485-LN_UserManual_v1.0.1.pdf]] or upgrade the firmware to v1.1 204 +))) 205 +))) 206 + 198 198 === 3.3.1 onfigure UART settings for RS485 or TTL communication === 199 199 200 -RS485- BLcan connect to eitherRS485sensorsorTTLsensor.User need to specifywhattype ofsensorneedtoconnect.209 +To use RS485-LN to read data from RS485 sensors, connect the RS485-LN A/B traces to the sensors. And user need to make sure RS485-LN use the match UART setting to access the sensors. The related commands for UART settings are: 201 201 202 -**~1. RS485-MODBUS mode:** 203 - 204 -AT+MOD=1 ~/~/ Support RS485-MODBUS type sensors. User can connect multiply RS485 , Modbus sensors to the A / B pins. 205 - 206 -**2. TTL mode:** 207 - 208 -AT+MOD=2 ~/~/ Support TTL Level sensors, User can connect one TTL Sensor to the TXD/RXD/GND pins. 209 - 210 -RS485-BL default UART settings is **9600, no parity, stop bit 1**. If the sensor has a different settings, user can change the RS485-BL setting to match. 211 - 212 212 (% border="1" style="background-color:#ffffcc; color:green; width:795px" %) 213 213 |((( 214 214 **AT Commands** ... ... @@ -233,13 +233,7 @@ 233 233 |((( 234 234 AT+PARITY 235 235 )))|(% style="width:285px" %)((( 236 -((( 237 237 Set UART parity (for RS485 connection) 238 -))) 239 - 240 -((( 241 -Default Value is: no parity. 242 -))) 243 243 )))|(% style="width:347px" %)((( 244 244 ((( 245 245 AT+PARITY=0 ... ... @@ -257,7 +257,7 @@ 257 257 ))) 258 258 259 259 ((( 260 - DefaultValue is: 1bit.253 + 261 261 ))) 262 262 )))|(% style="width:347px" %)((( 263 263 ((( ... ... @@ -276,12 +276,10 @@ 276 276 === 3.3.2 Configure sensors === 277 277 278 278 ((( 279 -Some sensors might need to configure before normal operation. User can configure such sensor via PC or through RS485-BL AT Commands (% style="color:#4f81bd" %)**AT+CFGDEV**. 280 -))) 281 - 282 282 ((( 283 - When user issue an (% style="color:#4f81bd" %)**AT+CFGDEV**(%%)command,Each (% style="color:#4f81bd" %)**AT+CFGDEV**(%%)the RS485 or TTLsensors. This command will only run when user input it and won’t run during each sampling.273 +Some sensors might need to configure before normal operation. User can configure such sensor via PC and RS485 adapter or through RS485-LN AT Commands (% style="color:#4f81bd" %)**AT+CFGDEV**(%%). Each (% style="color:#4f81bd" %)**AT+CFGDEV **(%%)equals to send a RS485 command to sensors. This command will only run when user input it and won’t run during each sampling. 284 284 ))) 275 +))) 285 285 286 286 (% border="1" style="background-color:#ffffcc; color:green; width:806px" %) 287 287 |**AT Commands**|(% style="width:418px" %)**Description**|(% style="width:256px" %)**Example** ... ... @@ -293,8 +293,6 @@ 293 293 mm: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command 294 294 )))|(% style="width:256px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m 295 295 296 -Detail of AT+CFGDEV command see [[AT+CFGDEV detail>>path:#AT_CFGDEV]]. 297 - 298 298 === 3.3.3 Configure read commands for each sampling === 299 299 300 300 ((( ... ... @@ -461,7 +461,7 @@ 461 461 462 462 463 463 1. 464 -11. 453 +11. 465 465 111. Compose the uplink payload 466 466 467 467 Through AT+COMMANDx and AT+DATACUTx we got valid value from each RS485 commands, Assume these valid value are RETURN1, RETURN2, .., to RETURNx. The next step is how to compose the LoRa Uplink Payload by these RETURNs. The command is **AT+DATAUP.** ... ... @@ -525,8 +525,8 @@ 525 525 526 526 527 527 528 -1. 529 -11. 517 +1. 518 +11. 530 530 111. Uplink on demand 531 531 532 532 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. ... ... @@ -539,8 +539,8 @@ 539 539 540 540 541 541 542 -1. 543 -11. 531 +1. 532 +11. 544 544 111. Uplink on Interrupt 545 545 546 546 Put the interrupt sensor between 3.3v_out and GPIO ext.[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image022.png]] ... ... @@ -554,7 +554,7 @@ 554 554 AT+INTMOD=3 Interrupt trigger by rising edge. 555 555 556 556 557 -1. 546 +1. 558 558 11. Uplink Payload 559 559 560 560 |**Size(bytes)**|**2**|**1**|**Length depends on the return from the commands** ... ... @@ -616,15 +616,15 @@ 616 616 617 617 * **Sensor Related Commands**: These commands are special designed for RS485-BL. User can see these commands below: 618 618 619 -1. 620 -11. 608 +1. 609 +11. 621 621 111. Common Commands: 622 622 623 623 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]] 624 624 625 625 626 -1. 627 -11. 615 +1. 616 +11. 628 628 111. Sensor related commands: 629 629 630 630 ==== Choose Device Type (RS485 or TTL) ==== ... ... @@ -930,13 +930,13 @@ 930 930 931 931 932 932 933 -1. 922 +1. 934 934 11. Buttons 935 935 936 936 |**Button**|**Feature** 937 937 |**RST**|Reboot RS485-BL 938 938 939 -1. 928 +1. 940 940 11. +3V3 Output 941 941 942 942 RS485-BL has a Controllable +3V3 output, user can use this output to power external sensor. ... ... @@ -954,7 +954,7 @@ 954 954 By default, the AT+3V3T=0. This is a special case, means the +3V3 output is always on at any time 955 955 956 956 957 -1. 946 +1. 958 958 11. +5V Output 959 959 960 960 RS485-BL has a Controllable +5V output, user can use this output to power external sensor. ... ... @@ -974,13 +974,13 @@ 974 974 975 975 976 976 977 -1. 966 +1. 978 978 11. LEDs 979 979 980 980 |**LEDs**|**Feature** 981 981 |**LED1**|Blink when device transmit a packet. 982 982 983 -1. 972 +1. 984 984 11. Switch Jumper 985 985 986 986 |**Switch Jumper**|**Feature** ... ... @@ -1026,7 +1026,7 @@ 1026 1026 1027 1027 1028 1028 1029 -1. 1018 +1. 1030 1030 11. Common AT Command Sequence 1031 1031 111. Multi-channel ABP mode (Use with SX1301/LG308) 1032 1032 ... ... @@ -1045,8 +1045,8 @@ 1045 1045 1046 1046 ATZ 1047 1047 1048 -1. 1049 -11. 1037 +1. 1038 +11. 1050 1050 111. Single-channel ABP mode (Use with LG01/LG02) 1051 1051 1052 1052 AT+FDR Reset Parameters to Factory Default, Keys Reserve ... ... @@ -1121,7 +1121,7 @@ 1121 1121 [[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]] 1122 1122 1123 1123 1124 -1. 1113 +1. 1125 1125 11. How to change the LoRa Frequency Bands/Region? 1126 1126 1127 1127 User can follow the introduction for [[how to upgrade image>>path:#upgrade_image]]. When download the images, choose the required image file for download. ... ... @@ -1128,7 +1128,7 @@ 1128 1128 1129 1129 1130 1130 1131 -1. 1120 +1. 1132 1132 11. How many RS485-Slave can RS485-BL connects? 1133 1133 1134 1134 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]]. ... ... @@ -1145,7 +1145,7 @@ 1145 1145 1146 1146 1147 1147 1148 -1. 1137 +1. 1149 1149 11. Why I can’t join TTN V3 in US915 /AU915 bands? 1150 1150 1151 1151 It might about the channels mapping. Please see for detail.
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