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 ... ... @@ -187,7 +187,7 @@ 187 187 188 188 189 189 ((( 190 -**Step 2**: Power on RS485-L Nand 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-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. 191 191 ))) 192 192 193 193 [[image:1652953568895-172.png||height="232" width="724"]] ... ... @@ -195,19 +195,23 @@ 195 195 == 3.3 Configure Commands to read data == 196 196 197 197 ((( 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. 198 +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. 200 200 ))) 201 201 202 -((( 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 - 207 207 === 3.3.1 onfigure UART settings for RS485 or TTL communication === 208 208 209 - To useRS485-LNto read data from RS485 sensors,connect the RS485-LNA/B tracestothesensors.And user need tomakesureRS485-LN use the matchUART settingtoaccess thesensors.Therelatedcommandsfor UART settings are:203 +RS485-BL can connect to either RS485 sensors or TTL sensor. User need to specify what type of sensor need to connect. 210 210 205 +**~1. RS485-MODBUS mode:** 206 + 207 +AT+MOD=1 ~/~/ Support RS485-MODBUS type sensors. User can connect multiply RS485 , Modbus sensors to the A / B pins. 208 + 209 +**2. TTL mode:** 210 + 211 +AT+MOD=2 ~/~/ Support TTL Level sensors, User can connect one TTL Sensor to the TXD/RXD/GND pins. 212 + 213 +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. 214 + 211 211 (% border="1" style="background-color:#ffffcc; color:green; width:795px" %) 212 212 |((( 213 213 **AT Commands** ... ... @@ -232,7 +232,13 @@ 232 232 |((( 233 233 AT+PARITY 234 234 )))|(% style="width:285px" %)((( 239 +((( 235 235 Set UART parity (for RS485 connection) 241 +))) 242 + 243 +((( 244 +Default Value is: no parity. 245 +))) 236 236 )))|(% style="width:347px" %)((( 237 237 ((( 238 238 AT+PARITY=0 ... ... @@ -250,7 +250,7 @@ 250 250 ))) 251 251 252 252 ((( 253 - 263 +Default Value is: 1bit. 254 254 ))) 255 255 )))|(% style="width:347px" %)((( 256 256 ((( ... ... @@ -269,10 +269,12 @@ 269 269 === 3.3.2 Configure sensors === 270 270 271 271 ((( 282 +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**. 283 +))) 284 + 272 272 ((( 273 - Some sensors might need to configurebefore normal operation. Usercan configuresuchsensorviaPC andRS485 adapter or through RS485-LN AT Commands(% style="color:#4f81bd" %)**AT+CFGDEV**(%%).Each (% style="color:#4f81bd" %)**AT+CFGDEVRS485command to sensors. This command will only run when user input it and won’t run during each sampling.286 +When user issue an (% style="color:#4f81bd" %)**AT+CFGDEV**(%%) command, Each (% style="color:#4f81bd" %)**AT+CFGDEV**(%%) equals to send a command to the RS485 or TTL sensors. This command will only run when user input it and won’t run during each sampling. 274 274 ))) 275 -))) 276 276 277 277 (% border="1" style="background-color:#ffffcc; color:green; width:806px" %) 278 278 |**AT Commands**|(% style="width:418px" %)**Description**|(% style="width:256px" %)**Example** ... ... @@ -284,6 +284,8 @@ 284 284 mm: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command 285 285 )))|(% style="width:256px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m 286 286 299 +Detail of AT+CFGDEV command see [[AT+CFGDEV detail>>path:#AT_CFGDEV]]. 300 + 287 287 === 3.3.3 Configure read commands for each sampling === 288 288 289 289 ((( ... ... @@ -450,7 +450,7 @@ 450 450 451 451 452 452 1. 453 -11. 467 +11. 454 454 111. Compose the uplink payload 455 455 456 456 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.** ... ... @@ -514,8 +514,8 @@ 514 514 515 515 516 516 517 -1. 518 -11. 531 +1. 532 +11. 519 519 111. Uplink on demand 520 520 521 521 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. ... ... @@ -528,8 +528,8 @@ 528 528 529 529 530 530 531 -1. 532 -11. 545 +1. 546 +11. 533 533 111. Uplink on Interrupt 534 534 535 535 Put the interrupt sensor between 3.3v_out and GPIO ext.[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image022.png]] ... ... @@ -543,7 +543,7 @@ 543 543 AT+INTMOD=3 Interrupt trigger by rising edge. 544 544 545 545 546 -1. 560 +1. 547 547 11. Uplink Payload 548 548 549 549 |**Size(bytes)**|**2**|**1**|**Length depends on the return from the commands** ... ... @@ -605,15 +605,15 @@ 605 605 606 606 * **Sensor Related Commands**: These commands are special designed for RS485-BL. User can see these commands below: 607 607 608 -1. 609 -11. 622 +1. 623 +11. 610 610 111. Common Commands: 611 611 612 612 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]] 613 613 614 614 615 -1. 616 -11. 629 +1. 630 +11. 617 617 111. Sensor related commands: 618 618 619 619 ==== Choose Device Type (RS485 or TTL) ==== ... ... @@ -919,13 +919,13 @@ 919 919 920 920 921 921 922 -1. 936 +1. 923 923 11. Buttons 924 924 925 925 |**Button**|**Feature** 926 926 |**RST**|Reboot RS485-BL 927 927 928 -1. 942 +1. 929 929 11. +3V3 Output 930 930 931 931 RS485-BL has a Controllable +3V3 output, user can use this output to power external sensor. ... ... @@ -943,7 +943,7 @@ 943 943 By default, the AT+3V3T=0. This is a special case, means the +3V3 output is always on at any time 944 944 945 945 946 -1. 960 +1. 947 947 11. +5V Output 948 948 949 949 RS485-BL has a Controllable +5V output, user can use this output to power external sensor. ... ... @@ -963,13 +963,13 @@ 963 963 964 964 965 965 966 -1. 980 +1. 967 967 11. LEDs 968 968 969 969 |**LEDs**|**Feature** 970 970 |**LED1**|Blink when device transmit a packet. 971 971 972 -1. 986 +1. 973 973 11. Switch Jumper 974 974 975 975 |**Switch Jumper**|**Feature** ... ... @@ -1015,7 +1015,7 @@ 1015 1015 1016 1016 1017 1017 1018 -1. 1032 +1. 1019 1019 11. Common AT Command Sequence 1020 1020 111. Multi-channel ABP mode (Use with SX1301/LG308) 1021 1021 ... ... @@ -1034,8 +1034,8 @@ 1034 1034 1035 1035 ATZ 1036 1036 1037 -1. 1038 -11. 1051 +1. 1052 +11. 1039 1039 111. Single-channel ABP mode (Use with LG01/LG02) 1040 1040 1041 1041 AT+FDR Reset Parameters to Factory Default, Keys Reserve ... ... @@ -1110,7 +1110,7 @@ 1110 1110 [[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]] 1111 1111 1112 1112 1113 -1. 1127 +1. 1114 1114 11. How to change the LoRa Frequency Bands/Region? 1115 1115 1116 1116 User can follow the introduction for [[how to upgrade image>>path:#upgrade_image]]. When download the images, choose the required image file for download. ... ... @@ -1117,7 +1117,7 @@ 1117 1117 1118 1118 1119 1119 1120 -1. 1134 +1. 1121 1121 11. How many RS485-Slave can RS485-BL connects? 1122 1122 1123 1123 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]]. ... ... @@ -1134,7 +1134,7 @@ 1134 1134 1135 1135 1136 1136 1137 -1. 1151 +1. 1138 1138 11. Why I can’t join TTN V3 in US915 /AU915 bands? 1139 1139 1140 1140 It might about the channels mapping. Please see for detail.
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