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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... ... @@ -167,19 +167,31 @@ 167 167 168 168 [[image:1652953414711-647.png||height="337" width="723"]] 169 169 170 +((( 170 170 The RS485-BL in this example connected to two RS485 devices for demonstration, user can connect to other RS485 devices via the same method. 172 +))) 171 171 174 +((( 172 172 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: 176 +))) 173 173 178 +((( 174 174 **Step 1**: Create a device in TTN V3 with the OTAA keys from RS485-BL. 180 +))) 175 175 182 +((( 176 176 Each RS485-BL is shipped with a sticker with unique device EUI: 184 +))) 177 177 178 178 [[image:1652953462722-299.png]] 179 179 188 +((( 180 180 User can enter this key in their LoRaWAN Server portal. Below is TTN V3 screen shot: 190 +))) 181 181 192 +((( 182 182 Add APP EUI in the application. 194 +))) 183 183 184 184 185 185 ... ... @@ -207,60 +207,89 @@ 207 207 208 208 [[image:1652953568895-172.png||height="232" width="724"]] 209 209 222 +== 3.3 Configure Commands to read data == 210 210 211 - 212 - 213 -1. 214 -11. Configure Commands to read data 215 - 224 +((( 216 216 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. 226 +))) 217 217 228 +=== 3.3.1 onfigure UART settings for RS485 or TTL communication === 218 218 219 -1. 220 -11. 221 -111. Configure UART settings for RS485 or TTL communication 222 - 223 223 RS485-BL can connect to either RS485 sensors or TTL sensor. User need to specify what type of sensor need to connect. 224 224 225 -1. RS485-MODBUS mode: 232 +**~1. RS485-MODBUS mode:** 226 226 227 227 AT+MOD=1 ~/~/ Support RS485-MODBUS type sensors. User can connect multiply RS485 , Modbus sensors to the A / B pins. 228 228 236 +**2. TTL mode:** 229 229 230 -1. TTL mode: 231 - 232 232 AT+MOD=2 ~/~/ Support TTL Level sensors, User can connect one TTL Sensor to the TXD/RXD/GND pins. 233 233 234 - 235 235 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. 236 236 237 - 238 -|**AT Commands**|**Description**|**Example** 239 -|AT+BAUDR|Set the baud rate (for RS485 connection). Default Value is: 9600.|((( 242 +(% border="1" style="background-color:#ffffcc; color:green; width:795px" %) 243 +|((( 244 +**AT Commands** 245 +)))|(% style="width:285px" %)((( 246 +**Description** 247 +)))|(% style="width:347px" %)((( 248 +**Example** 249 +))) 250 +|((( 251 +AT+BAUDR 252 +)))|(% style="width:285px" %)((( 253 +Set the baud rate (for RS485 connection). Default Value is: 9600. 254 +)))|(% style="width:347px" %)((( 255 +((( 240 240 AT+BAUDR=9600 257 +))) 241 241 259 +((( 242 242 Options: (1200,2400,4800,14400,19200,115200) 243 243 ))) 244 -|AT+PARITY|((( 262 +))) 263 +|((( 264 +AT+PARITY 265 +)))|(% style="width:285px" %)((( 266 +((( 245 245 Set UART parity (for RS485 connection) 268 +))) 246 246 270 +((( 247 247 Default Value is: no parity. 248 -)))|((( 272 +))) 273 +)))|(% style="width:347px" %)((( 274 +((( 249 249 AT+PARITY=0 276 +))) 250 250 278 +((( 251 251 Option: 0: no parity, 1: odd parity, 2: even parity 252 252 ))) 253 -|AT+STOPBIT|((( 281 +))) 282 +|((( 283 +AT+STOPBIT 284 +)))|(% style="width:285px" %)((( 285 +((( 254 254 Set serial stopbit (for RS485 connection) 287 +))) 255 255 289 +((( 256 256 Default Value is: 1bit. 257 -)))|((( 291 +))) 292 +)))|(% style="width:347px" %)((( 293 +((( 258 258 AT+STOPBIT=0 for 1bit 295 +))) 259 259 297 +((( 260 260 AT+STOPBIT=1 for 1.5 bit 299 +))) 261 261 301 +((( 262 262 AT+STOPBIT=2 for 2 bits 263 263 ))) 304 +))) 264 264 265 265 266 266