Last modified by Karry Zhuang on 2024/07/11 11:58
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... ... @@ -1,19 +1,33 @@ 1 -= 1. Introduction = 1 +(% class="wikigeneratedid" %) 2 + **Contents:** 2 2 4 +{{toc/}} 5 + 6 + 7 + 8 + 9 + 10 + 11 += **1. Introduction** = 12 + 3 3 This article provide the examples for RS485-LN to connect to different type of RS485 sensors. 4 4 5 -== 1.1 Example 1: Connect to Leak relay and VFD == 6 6 16 +== **1.1 Example 1: Connect to Leak relay and VFD** == 17 + 7 7 This instruction is provided by Xavier Florensa Berenguer from [[NORIA GRUPO DE COMPRAS>>url:http://www.gruponovelec.com/]]. It is to show how to use RS485-LN to connect to Relay and VFD and communicate with Mobile. The structure is like below: 8 8 9 -[[image: https://wiki.dragino.com/images/thumb/5/5c/RS485_01.png/600px-RS485_01.png||height="297" width="534"]]20 +[[image:image-20220527091852-1.png]] 10 10 11 11 Connection 12 12 13 -[[image:https://wiki.dragino.com/images/thumb/f/f2/RS485_02.png/600px-RS485_02.png||height="743" width="528"]](% style="display:none" %) 14 14 25 + 26 +[[image:image-20220527091942-2.png]](% style="display:none" %) 27 + 15 15 Connection 16 16 30 + 17 17 Related documents: 18 18 19 19 * [[Solar Pump with Dragino>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/Relay_VFD/]] : System Structure ... ... @@ -21,25 +21,30 @@ 21 21 * [[Video Demo>>url:https://www.youtube.com/watch?v=TAFZ5eaf-MY&t=6s&ab_channel=XavierFlorensaBerenguer]] 22 22 23 23 24 -== 1.2 Example 2: Connect to Pulse Counter == 25 25 39 +== **1.2 Example 2: Connect to Pulse Counter** == 40 + 26 26 This instruction is provided by Xavier Florensa Berenguer from [[NORIA GRUPO DE COMPRAS>>url:http://www.gruponovelec.com/]]. It is to show how to use RS485-LN to connect to Pulse Counter and communicate with Mobile. This example and example 2 compose the structure for a farm IoT solution. The structure is like below: 27 27 28 -[[image: https://wiki.dragino.com/images/thumb/3/34/RS485_02_1.png/600px-RS485_02_1.png||height="364" width="600"]]43 +[[image:image-20220527092058-3.png]] 29 29 30 30 Connection 31 31 32 -[[image:https://wiki.dragino.com/images/thumb/5/5f/RS485_02_2.png/600px-RS485_02_2.png||height="337" width="600"]] 33 33 48 + 49 +[[image:image-20220527092146-4.png]] 50 + 34 34 Connection 35 35 53 + 36 36 * [[Pickdata MIO40 water pulse counter to LoRa with Dragino RS485-LN>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/Pulse-Counter/]] : Configure Document 37 37 * [[Dragino Solution in Farm>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/&file=Dragino%20on%20Farms.pptx]] 38 38 57 +== == 39 39 40 -== 1.3 Example3: Use RS485-LN with energy meters == 59 +== **1.3 Example3: Use RS485-LN with energy meters** == 41 41 42 -=== 1.3.1 OverView === 61 +=== **1.3.1 OverView** === 43 43 44 44 ((( 45 45 **Note**:The specifications of each energy meter are different, please refer to your own energy meter specifications. ... ... @@ -49,40 +49,57 @@ 49 49 This example describes a single-phase meter.This is the connection between the RS485-LN and the energy meter. 50 50 ))) 51 51 52 -[[image: https://wiki.dragino.com/images/thumb/f/f4/Meter1.jpg/600px-Meter1.jpg||height="800" width="600"]]71 +[[image:image-20220527092419-5.png]] 53 53 54 54 Connection1 55 55 75 + 76 + 77 +((( 56 56 How to connect with Energy Meter: 79 +))) 57 57 81 +((( 58 58 Follow the instructions of the electric energy meter to connect the phase line and the neutral line, and then connect 485A+ and 485B- to RS485A and RA485B of RS485-LN respectively. 83 +))) 59 59 85 +((( 60 60 The RS485-LN can be powered by 7 ~~ 24V DC power source. Connection as below 87 +))) 61 61 89 +((( 62 62 Power Source VIN to RS485-LN VIN+ 91 +))) 63 63 93 +((( 64 64 Power Source GND to RS485-LN VIN- 95 +))) 65 65 97 +((( 66 66 Once there is power, the RS485-LN will be on. 99 +))) 67 67 68 -[[image: https://wiki.dragino.com/images/thumb/1/15/Meter2.jpg/600px-Meter2.jpg||height="450" width="600"]]101 +[[image:image-20220527092514-6.png]] 69 69 70 70 Connection2 71 71 72 -[[image:https://wiki.dragino.com/images/thumb/a/a5/Meter3.jpg/600px-Meter3.jpg||height="800" width="600"]] 73 73 106 + 107 +[[image:image-20220527092555-7.png]] 108 + 74 74 Connection3 75 75 76 76 77 -=== 1.3.2 How to use the parameters of the energy meter and MODBUS commands === 112 +=== **1.3.2 How to use the parameters of the energy meter and MODBUS commands** === 78 78 79 79 If the user needs to read the parameters of the electric energy meter and use the modbus command,please refer to the appendix of the MODBUS communication protocol in the user manual of the energy meter. 80 80 81 -[[image: https://wiki.dragino.com/images/thumb/3/35/Meter4.png/600px-Meter4.png||alt="Meter4.png" height="193" width="600"]]116 +[[image:image-20220527092629-8.png]] 82 82 118 + 83 83 (% class="box infomessage" %) 84 84 ((( 85 -Example:AT+COMMAND1=01 03 00 00 00 01 84 0A 121 +**Example:** AT+COMMAND1=01 03 00 00 00 01 84 0A 86 86 ))) 87 87 88 88 * The first byte : slave address code (=001~247) ... ... @@ -91,11 +91,13 @@ 91 91 * 5th and 6th bytes: Number of registers to read 92 92 * 7th and 8th bytes: CRC16 checksum from bytes 1 to 6. 93 93 130 +((( 94 94 How to parse the reading of the return command of the parameter: 132 +))) 95 95 96 96 (% class="box infomessage" %) 97 97 ((( 98 -Example:RETURN1:01 03 02 08 FD 7E 05 136 +**Example:** RETURN1:01 03 02 08 FD 7E 05 99 99 ))) 100 100 101 101 * The first byte ARD: slave address code (=001~254) ... ... @@ -105,13 +105,18 @@ 105 105 * The 6th and 7th bytes: CRC16 checksum 106 106 * 08 FD is register data. Use short integer 16 bits to convert to decimal, get 2301, then 230.1V is the voltage. 107 107 146 +(% class="wikigeneratedid" %) 147 +((( 148 + 149 +))) 108 108 109 -=== 1.3.3 How to configure RS485-LN and parse output commands === 151 +=== **1.3.3 How to configure RS485-LN and parse output commands** === 110 110 111 111 RS485-LN provides two configuration methods: AT COMMAND and DOWNLINK. 112 112 113 -==== 1.3.3.1 via AT COMMAND: ==== 114 114 156 +==== **1.3.3.1 via AT COMMAND:** ==== 157 + 115 115 First, we can use **AT+CFGDEV** to get the return value, and we can also judge whether the input parameters are correct. 116 116 117 117 ((( ... ... @@ -118,181 +118,301 @@ 118 118 If the configured parameters and commands are incorrect, the return value is not obtained. 119 119 ))) 120 120 121 -[[image: https://wiki.dragino.com/images/b/bc/AT_COMMAND1.png||height="358" width="456"]]164 +[[image:image-20220527092748-9.png]] 122 122 123 - **AT COMMAND**166 +AT COMMAND 124 124 168 + 125 125 (% class="box infomessage" %) 126 126 ((( 127 -AT+DATACUTx : This command defines how to handle the return from AT+COMMANDx, max reture length is 40 bytes. AT+DATACUTx=a,b,c 171 + AT+DATACUTx : This command defines how to handle the return from AT+COMMANDx, max reture length is 40 bytes. AT+DATACUTx=a,b,c 128 128 ))) 129 129 130 -a: length for the return of AT+COMMAND 174 +a: length for the return of AT+COMMAND 131 131 132 -b:1: grab valid value by byte, max 6 bytes .2: grab valid value by bytes section, max 3 sections.176 +b: 1: grab valid value by byte, max 6 bytes; 2: grab valid value by bytes section, max 3 sections. 133 133 134 -c: define the position for valid value. 178 +c: define the position for valid value. 135 135 136 -[[image: https://wiki.dragino.com/images/7/7d/AT_COMMAND2.png||height="278" width="477"]]180 +[[image:image-20220527092936-10.png]] 137 137 138 138 AT COMMAND 139 139 184 + 185 + 140 140 PAYLOAD is available after the valid value is intercepted. 141 141 142 142 143 -[[image: https://wiki.dragino.com/images/3/3a/AT_COMMAND4.png||height="219" width="576"]]189 +[[image:image-20220527093059-11.png]] 144 144 145 145 AT COMMAND 146 146 147 -You can get configured PAYLOAD on TTN. 148 148 149 149 150 - [[image:https://wiki.dragino.com/images/thumb/c/c2/AT_COMMAND3.png/600px-AT_COMMAND3.png||height="138" width="600"]]195 +You can get configured PAYLOAD on TTN. 151 151 197 +[[image:image-20220527093133-12.png]] 198 + 199 +((( 152 152 AT COMMAND 201 +))) 153 153 154 -**Example**: CMD1:Read current data with MODBUS command. address:0x03 AT+COMMAND1= 01 03 00 03 00 01,1 203 +((( 204 + 205 +))) 155 155 207 +((( 208 +(% style="color:#4f81bd" %)**Example**: 209 + 210 +CMD1:Read current data with MODBUS command. address:0x03 AT+COMMAND1= 01 03 00 03 00 01,1 211 +))) 212 + 213 +((( 156 156 RETURN1:01 03 02 00 02 39 85 00 00(return data) 215 +))) 157 157 217 +((( 158 158 AT+DATACUT1:9,1,4+5+6+7 Take the return value 00 02 39 85 as the valid value of reading current data and used to splice payload. 159 159 220 + 221 +))) 222 + 223 +((( 160 160 CMD2:Read voltage data with MODBUS command. address:0x00 AT+COMMAND2= 01 03 00 00 00 01,1 225 +))) 161 161 227 +((( 162 162 RETURN2:01 03 02 08 DC BE 1D(return data) 229 +))) 163 163 231 +((( 164 164 AT+DATACUT2:7,1,4+5 Take the return value 08 DC as the valid value of reading voltage data and used to splice payload. 165 165 234 + 235 +))) 236 + 237 +((( 166 166 CMD3:Read total active energy data with MODBUS command. address:0x0031 AT+COMMAND3= 01 03 00 31 00 02,1 239 +))) 167 167 241 +((( 168 168 RETURN3:01 03 04 00 00 00 44 FA 00(return data) 243 +))) 169 169 245 +((( 170 170 AT+DATACUT3:9,1,4+5+6+7 Take the return value 00 00 00 44 as the valid value of reading total active energy data and used to splice payload. 247 +))) 171 171 249 +((( 172 172 Payload:01 00 02 39 85 08 DC 00 00 00 44 251 +))) 173 173 174 -[[image: https://wiki.dragino.com/images/thumb/9/9b/AT_COMMAND10.png/600px-AT_COMMAND10.png||height="278" width="600"]]253 +[[image:image-20220527093204-13.png]] 175 175 176 176 AT COMMAND 177 177 178 -01 is device address,00 02 is the current, 08 DC is the voltage,00 00 00 44 is the total active energy. 179 179 258 +(% style="color:#4f81bd" %)**01 is device address,00 02 is the current, 08 DC is the voltage,00 00 00 44 is the total active energy.** 180 180 181 -[[~[~[image:https://wiki.dragino.com/images/thumb/b/b8/AT_COMMAND11.png/600px-AT_COMMAND11.png~|~|height="271" width="600"~]~]>>url:https://wiki.dragino.com/index.php/File:AT_COMMAND11.png]] 182 182 261 + 262 +[[image:image-20220527093251-14.png]] 263 + 183 183 AT COMMAND 184 184 185 185 186 -==== 1.3.3.2 via LoRaWAN DOWNLINK ==== 267 +==== **1.3.3.2 via LoRaWAN DOWNLINK** ==== 187 187 188 -[[image: https://wiki.dragino.com/images/thumb/f/fc/DOWNLINK_METER1.png/600px-DOWNLINK_METER1.png||height="423" width="600"]]269 +[[image:image-20220527093358-15.png]] 189 189 271 +((( 190 190 DOWNLINK 273 +))) 191 191 192 -Type Code 0xAF 275 +((( 276 + 277 +))) 193 193 279 +((( 280 +(% style="color:#4f81bd" %)**Type Code 0xAF** 281 +))) 282 + 283 +((( 284 +(% class="box infomessage" %) 285 +((( 194 194 0xAF downlink command can be used to set AT+COMMANDx or AT+DATACUTx. 287 +))) 288 +))) 195 195 290 +((( 196 196 Note: if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink. 292 +))) 197 197 294 +((( 198 198 Format: AF MM NN LL XX XX XX XX YY 296 +))) 199 199 298 +((( 200 200 Where: 300 +))) 201 201 302 +((( 202 202 MM: the ATCOMMAND or AT+DATACUT to be set. Value from 01 ~~ 0F, 304 +))) 203 203 306 +((( 204 204 NN: 0: no CRC; 1: add CRC-16/MODBUS ; 2: set the AT+DATACUT value. 308 +))) 205 205 310 +((( 206 206 LL: The length of AT+COMMAND or AT+DATACUT command 312 +))) 207 207 314 +((( 208 208 XX XX XX XX: AT+COMMAND or AT+DATACUT command 316 +))) 209 209 318 +((( 210 210 YY: If YY=0, RS485-LN will execute the downlink command without uplink; if YY=1, RS485-LN 320 +))) 211 211 322 +((( 212 212 will execute an uplink after got this command. 324 +))) 213 213 214 -Example: 326 +((( 327 + 215 215 216 -AF 03 01 06 0A 05 00 04 00 01 00: Same as AT+COMMAND3=0A 05 00 04 00 01,1 329 +(% style="color:#4f81bd" %)**Example:** 330 +))) 217 217 218 -[[image:https://wiki.dragino.com/images/thumb/4/45/DOWNLINK_METER2.png/600px-DOWNLINK_METER2.png||height="208" width="600"]] 332 +((( 333 +**AF 03 01 06 0A 05 00 04 00 01 00**: Same as AT+COMMAND3=0A 05 00 04 00 01,1 334 +))) 219 219 336 +[[image:image-20220527093430-16.png]] 337 + 220 220 DOWNLINK 221 221 222 222 223 -[[~[~[image:https://wiki.dragino.com/images/thumb/2/20/DOWNLINK_METER3.png/600px-DOWNLINK_METER3.png~|~|height="105" width="600"~]~]>>url:https://wiki.dragino.com/index.php/File:DOWNLINK_METER3.png]] 224 224 342 +[[image:image-20220527093508-17.png]] 343 + 225 225 DOWNLINK 226 226 227 227 228 -[[image:https://wiki.dragino.com/images/thumb/2/27/DOWNLINK_METER4.png/600px-DOWNLINK_METER4.png||height="210" width="600"]] 229 229 348 +[[image:image-20220527093530-18.png]] 349 + 230 230 DOWNLINK 231 231 232 232 233 -[[~[~[image:https://wiki.dragino.com/images/thumb/3/39/DOWNLINK_METER5.png/600px-DOWNLINK_METER5.png~|~|height="176" width="600"~]~]>>url:https://wiki.dragino.com/index.php/File:DOWNLINK_METER5.png]] 234 234 354 +[[image:image-20220527093607-19.png]] 355 + 235 235 DOWNLINK 236 236 237 -[[image:https://wiki.dragino.com/images/thumb/a/a2/DOWNLINK_METER6.png/600px-DOWNLINK_METER6.png||height="365" width="600"]] 238 238 359 + 360 +[[image:image-20220527093628-20.png]] 361 + 239 239 DOWNLINK 240 240 241 241 242 -=== 1.3.4 How to configure and output commands for RS485 to USB === 365 +=== **1.3.4 How to configure and output commands for RS485 to USB** === 243 243 367 +((( 244 244 This step is not necessary, it is just to show how to use a normal RS485 to USB adapter to connect to the meter to check the input and output. This can be used to test the connection and RS485 command of the meter without RS485-LN. 369 +))) 245 245 371 +((( 246 246 First, connect the A+ and A- of the USB to the 485 A and 485 B of the energy meter. 373 +))) 247 247 375 +((( 248 248 Open the serial port debugging, set the send and receive to HEX. 377 +))) 249 249 379 +((( 250 250 Baud rate: 9600 381 +))) 251 251 383 +((( 252 252 check digit: Even 385 +))) 253 253 254 -[[image: https://wiki.dragino.com/images/thumb/8/8f/Usb_meter2.jpg/600px-Usb_meter2.jpg||height="800" width="600"]]387 +[[image:image-20220527093708-21.png]] 255 255 256 256 USB 257 257 258 -[[image:https://wiki.dragino.com/images/thumb/6/62/Usb_meter1.jpg/600px-Usb_meter1.jpg||height="800" width="600"]] 259 259 392 + 393 +[[image:image-20220527093747-22.png]] 394 + 260 260 USB 261 261 397 + 398 + 399 +((( 262 262 The configuration command is consistent with the AT command, input the hexadecimal command directly into the serial port, and the serial port will output the command. 401 +))) 263 263 264 -Example:input:01 03 00 31 00 02 95 c4 403 +((( 404 +(% style="color:#4f81bd" %)**Example:** (%%)input:01 03 00 31 00 02 95 c4 405 +))) 265 265 266 -{{{ output:01 03 04 00 00 00 42 7A 02 267 -}}} 407 +((( 408 + output:01 03 04 00 00 00 42 7A 02 409 +))) 268 268 269 -[[image: https://wiki.dragino.com/images/thumb/b/b3/Usb_meter3.jpg/600px-Usb_meter3.jpg||height="466" width="600"]]411 +[[image:image-20220527093821-23.png]] 270 270 271 271 USB 272 272 273 -=== 1.3.5 How to configure multiple devices and modify device addresses === 274 274 416 +=== **1.3.5 How to configure multiple devices and modify device addresses** === 417 + 275 275 If users need to read the parameters of multiple energy meters, they need to modify the device address, because the default device address of each energy meter is 01. 276 276 420 +((( 421 +((( 277 277 Set the device address according to the parameters in the appendix of the MODBUS communication protocol. 423 +))) 424 +))) 278 278 279 -[[image: https://wiki.dragino.com/images/thumb/1/1f/Double_meter3.png/600px-Double_meter3.png||alt="Double meter3.png" height="83" width="600"]]426 +[[image:image-20220601142044-1.png]] 280 280 281 -Example:These two meters are examples of setting parameters and device addresses. 282 282 283 - [[image:https://wiki.dragino.com/images/thumb/e/ee/Double_meter1.jpg/600px-Double_meter1.jpg||alt="Doublemeter1.jpg"height="800"width="600"]]429 +**Example**:These two meters are examples of setting parameters and device addresses. 284 284 285 -[[image: https://wiki.dragino.com/images/thumb/7/72/Double_meter2.jpg/600px-Double_meter2.jpg||alt="Double meter2.jpg" height="800" width="600"]]431 +[[image:image-20220527093950-25.png]] 286 286 433 +[[image:image-20220527094028-26.png]] 434 + 435 +((( 436 +((( 287 287 First of all, since the default device address of the energy meter is 01, the configuration of two energy meters will conflict, so we first connect an energy meter and configure the device address. 438 +))) 439 +))) 288 288 441 +((( 442 +((( 289 289 We can use AT+CFGDEV to set the device address. 444 +))) 445 +))) 290 290 447 +((( 448 +((( 291 291 We modify the device address 01 of the first energy meter to 02. 450 +))) 451 +))) 292 292 293 -[[image: https://wiki.dragino.com/images/6/6b/Double_meter4.png||alt="Double meter4.png" height="141" width="456"]]453 +[[image:image-20220601142354-2.png]] 294 294 295 -AT+CFGDEV:01 10 00 61 00 01 02 00 02,1 455 +(% class="box infomessage" %) 456 +((( 457 +**AT+CFGDEV:01 10 00 61 00 01 02 00 02,1** 458 +))) 296 296 297 297 * 01:device adaress 298 298 ... ... @@ -314,12 +314,13 @@ 314 314 315 315 Its default device address is 01, and the following are the parameters for configuring two energy meters. 316 316 317 -[[image: https://wiki.dragino.com/images/1/13/Meter11.png||alt="Meter11.png" height="576" width="379"]]480 +[[image:image-20220601142452-3.png]] 318 318 319 -[[image:https://wiki.dragino.com/images/thumb/7/7e/Meter12.png/600px-Meter12.png||alt="Meter12.png" height="262" width="600"]] 320 320 321 - PAYLOAD:0108 DF 4362483 +[[image:image-20220601142607-4.png]] 322 322 485 +**PAYLOAD:01 08 DF 43 62** 486 + 323 323 * 08 DF is the valid value of the meter with device address 02. 324 324 * 43 62 is the valid value of the meter with device address 01. 325 325 ... ... @@ -328,7 +328,7 @@ 328 328 329 329 This instruction is provided by Xavier Florensa Berenguer from [[NORIA GRUPO DE COMPRAS>>url:http://www.gruponovelec.com/]]. It is to show how to use RS485-LN to connect to SCHNEIDER SMART and Monitor and control your cabinet remotely with no wires and with Dragino RS485-LN LoRaWAN technology. The structure is like below: 330 330 331 -[[image: https://wiki.dragino.com/images/thumb/f/fa/RS485_04_2.png/600px-RS485_04_2.png||height="336" width="600"]]495 +[[image:image-20220527094330-30.png]] 332 332 333 333 Connection 334 334 ... ... @@ -344,6 +344,7 @@ 344 344 * [[Connect to SEM Three>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/SEM_Three_Energy_Meter/&file=SEM%20three%20and%20Dragino%20RS485-LN%20v1.pdf]] : Configure Document for RS485-LN 345 345 346 346 511 + 347 347 == 1.6 Example 6:CEM C31 485-T1-MID Energy Meter with RS485-LN == 348 348 349 349 This instruction is provided by Xavier Florensa Berenguer from [[NORIA GRUPO DE COMPRAS>>url:http://www.gruponovelec.com/]]. It is to show how to use RS485-LN to connect to CEM C31 485-T1-MID and send the data for remote minitor. The structure is like below: ... ... @@ -350,10 +350,9 @@ 350 350 351 351 * [[CEM C31 485-T1-MID>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/ELECTRICAL%20CABINET/&file=ELECTRICAL%20CABINET%20READINGS.pdf]] : Configure Document For RS485-LN 352 352 353 - 354 354 == 1.7 Example 7:Schneider Electric PLC M221 with RS485-BL == 355 355 356 -[[image: https://wiki.dragino.com/images/thumb/9/97/PLC_M221.png/600px-PLC_M221.png||height="353" width="600"]]520 +[[image:image-20220527094556-31.png]] 357 357 358 358 Network Structure 359 359
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