Last modified by Karry Zhuang on 2024/07/11 11:58
<
From version < 57.17 >
edited by Xiaoling
on 2022/07/14 09:58
To version < 62.2 >
edited by Xiaoling
on 2024/05/30 17:46
>
Change comment: There is no comment for this version

Summary

Details

Page properties
Content
... ... @@ -7,67 +7,69 @@
7 7  
8 8  
9 9  
10 -= **1. Introduction** =
10 += 1. Introduction =
11 11  
12 12  
13 13  This article provide the examples for RS485-LN to connect to different type of RS485 sensors.
14 14  
15 15  
16 -== **1.1 Example 1: Connect to Leak relay and VFD** ==
16 +== 1.1 Example 1: Connect to Leak relay and VFD ==
17 17  
18 18  
19 19  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:
20 20  
21 -[[image:image-20220527091852-1.png]]
22 22  
23 -Connection
22 +[[image:image-20220527091852-1.png||height="547" width="994"]]
24 24  
24 +**Connection**
25 25  
26 26  
27 27  [[image:image-20220527091942-2.png]](% style="display:none" %)
28 28  
29 -Connection
29 +**Connection**
30 30  
31 31  
32 32  (% style="color:blue" %)**Related documents:**
33 33  
34 -* System Structure:  [[Solar Pump with Dragino>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/Relay_VFD/||style="background-color: rgb(255, 255, 255);"]]
35 -* Explanation on how to integrate to Node-red and to the Mobile Phone, and with link to the Github code:  [[Configure Manual>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/Relay_VFD/||style="background-color: rgb(255, 255, 255);"]]
34 +* System Structure:  [[Solar Pump with Dragino>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/Relay_VFD/||_mstmutation="1" style="background-color: rgb(255, 255, 255);"]]
35 +
36 +* Explanation on how to integrate to Node-red and to the Mobile Phone, and with link to the Github code:  [[Configure Manual>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/Relay_VFD/||_mstmutation="1" style="background-color: rgb(255, 255, 255);"]]
37 +
36 36  * [[Video Demo>>url:https://www.youtube.com/watch?v=TAFZ5eaf-MY&t=6s&ab_channel=XavierFlorensaBerenguer]]
37 37  
38 38  
39 -== **1.2 Example 2: Connect to Pulse Counter** ==
40 40  
42 +== 1.2 Example 2: Connect to Pulse Counter ==
41 41  
44 +
42 42  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:
43 43  
44 44  
45 -[[image:image-20220527092058-3.png]]
48 +[[image:image-20220527092058-3.png||height="552" width="905"]]
46 46  
47 -Connection
50 +**Connection**
48 48  
49 49  
53 +[[image:image-20220527092146-4.png||height="507" width="906"]]
50 50  
51 -[[image:image-20220527092146-4.png]]
55 +**Connection**
52 52  
53 -Connection
54 54  
55 -
56 56  (% style="color:blue" %)**Related documents:**
57 57  
58 -* Configure Document:  [[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/]]
60 +* Configure Document:  [[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/||_mstmutation="1"]]
61 +
59 59  * [[Dragino Solution in Farm>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/&file=Dragino%20on%20Farms.pptx]]
60 60  
61 61  
62 62  
63 -== **1.3 Example3: Use RS485-LN with energy meters** ==
66 +== 1.3 Example 3: Use RS485-LN with energy meters ==
64 64  
68 +=== 1.3.1 OverView ===
65 65  
66 -=== **1.3.1 OverView** ===
67 67  
68 -
69 69  (((
70 -(% style="color:red" %)**Note**：The specifications of each energy meter are different, please refer to your own energy meter specifications.
72 +(% style="color:red" %)**Note**：**The specifications of each energy meter are different, please refer to your own energy meter specifications.**
71 71  )))
72 72  
73 73  (((
... ... @@ -76,10 +76,9 @@
76 76  
77 77  [[image:image-20220527092419-5.png]]
78 78  
79 -Connection1
81 +**Connection1**
80 80  
81 81  
82 -
83 83  (((
84 84  (% style="color:blue" %)**How to connect with Energy Meter：**
85 85  
... ... @@ -95,11 +95,11 @@
95 95  )))
96 96  
97 97  (((
98 -Power Source VIN to RS485-LN VIN+
99 +Power Source **VIN** to RS485-LN **VIN+**
99 99  )))
100 100  
101 101  (((
102 -Power Source GND to RS485-LN VIN-
103 +Power Source **GND** to RS485-LN **VIN-**
103 103  )))
104 104  
105 105  (((
... ... @@ -108,15 +108,15 @@
108 108  
109 109  [[image:image-20220527092514-6.png]]
110 110  
111 -Connection2
112 +**Connection2**
112 112  
113 113  
114 114  [[image:image-20220527092555-7.png]]
115 115  
116 -Connection3
117 +**Connection3**
117 117  
118 118  
119 -=== **1.3.2 How to use the parameters of the energy meter and MODBUS commands** ===
120 +=== 1.3.2 How to use the parameters of the energy meter and MODBUS commands ===
120 120  
121 121  
122 122  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.
... ... @@ -127,9 +127,13 @@
127 127  (% style="color:blue" %)**Example:**(%%)  AT+COMMAND1=01 03 00 00 00 01 84 0A
128 128  
129 129  * The first byte : slave address code (=001～247)
131 +
130 130  * The second byte : read register value function code
133 +
131 131  * 3rd and 4th bytes: start address of register to be read
135 +
132 132  * 5th and 6th bytes: Number of registers to read
137 +
133 133  * 7th and 8th bytes: CRC16 checksum from bytes 1 to 6.
134 134  
135 135  (((
... ... @@ -142,23 +142,22 @@
142 142  )))
143 143  
144 144  * The first byte ARD: slave address code (=001～254)
150 +
145 145  * The second byte: Return to read function code
152 +
146 146  * 3rd byte: total number of bytes
154 +
147 147  * 4th～5th bytes: register data
156 +
148 148  * The 6th and 7th bytes: CRC16 checksum
158 +
149 149  * 08 FD is register data. Use short integer 16 bits to convert to decimal, get 2301, then 230.1V is the voltage.
150 150  
151 -(% class="wikigeneratedid" %)
152 -(((
153 -
154 154  
155 155  
156 -
157 -)))
163 +=== 1.3.3 How to configure RS485-LN and parse output commands ===
158 158  
159 -=== **1.3.3 How to configure RS485-LN and parse output commands** ===
160 160  
161 -
162 162  RS485-LN provides two configuration methods: AT COMMAND and DOWNLINK.
163 163  
164 164  
... ... @@ -169,16 +169,18 @@
169 169  
170 170  (((
171 171  If the configured parameters and commands are incorrect, the return value is not obtained.
176 +
177 +
172 172  )))
173 173  
174 174  [[image:image-20220601143201-9.png]]
175 175  
176 -AT COMMAND
182 +**AT COMMAND**
177 177  
178 178  
179 179  (% class="box infomessage" %)
180 180  (((
181 - **AT+DATACUTx **:  This command defines how to handle the return from AT+COMMANDx, max reture length is 40 bytes. AT+DATACUTx=a,b,c
187 + (% _mstmutation="1" %)**AT+DATACUTx **(%%):  This command defines how to handle the return from AT+COMMANDx, max reture length is 40 bytes. AT+DATACUTx=a,b,c
182 182  )))
183 183  
184 184  a:  length for the return of AT+COMMAND
... ... @@ -189,25 +189,22 @@
189 189  
190 190  [[image:image-20220601143115-8.png]]
191 191  
192 -AT COMMAND
198 +**AT COMMAND**
193 193  
194 194  
195 -
196 196  PAYLOAD is available after the valid value is intercepted.
197 197  
198 -
199 199  [[image:image-20220601143046-7.png]]
200 200  
201 -AT COMMAND
205 +**AT COMMAND**
202 202  
203 203  
204 -
205 205  You can get configured PAYLOAD on TTN.
206 206  
207 207  [[image:image-20220601143519-1.png]]
208 208  
209 209  (((
210 -AT COMMAND
213 +**AT COMMAND**
211 211  )))
212 212  
213 213  (((
... ... @@ -217,7 +217,7 @@
217 217  (((
218 218  (% style="color:blue" %)**Example**:
219 219  
220 -**CMD1:** Read current data with MODBUS command. address: 0x03 AT+COMMAND1= 01 03 00 03 00 01,1
223 +(% style="color:red" %)**CMD1:**(%%) Read current data with MODBUS command. address: 0x03 AT+COMMAND1= 01 03 00 03 00 01,1
221 221  )))
222 222  
223 223  (((
... ... @@ -231,7 +231,7 @@
231 231  )))
232 232  
233 233  (((
234 -**CMD2: **Read voltage data with MODBUS command. address: 0x00 AT+COMMAND2= 01 03 00 00 00 01,1
237 +(% style="color:red" %)**CMD2: **(%%)Read voltage data with MODBUS command. address: 0x00 AT+COMMAND2= 01 03 00 00 00 01,1
235 235  )))
236 236  
237 237  (((
... ... @@ -245,7 +245,7 @@
245 245  )))
246 246  
247 247  (((
248 -**CMD3:** Read total active energy data with MODBUS command. address: 0x0031 AT+COMMAND3= 01 03 00 31 00 02,1
251 +(% style="color:red" %)**CMD3:**(%%) Read total active energy data with MODBUS command. address: 0x0031 AT+COMMAND3= 01 03 00 31 00 02,1
249 249  )))
250 250  
251 251  (((
... ... @@ -265,7 +265,7 @@
265 265  AT COMMAND
266 266  
267 267  
268 -(% 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.**
271 +(% style="color:blue" %)**01 is device address,00 02 is the current, 08 DC is the voltage,00 00 00 44 is the total active energy.**
269 269  
270 270  
271 271  [[image:image-20220601143642-2.png]]
... ... @@ -279,15 +279,12 @@
279 279  [[image:image-20220527093358-15.png]]
280 280  
281 281  (((
282 -DOWNLINK
285 +**DOWNLINK**
283 283  )))
284 284  
285 -(((
286 -
287 -)))
288 288  
289 289  (((
290 -(% style="color:#4f81bd" %)**Type Code 0xAF**
290 +(% style="color:blue" %)**Type Code 0xAF**
291 291  )))
292 292  
293 293  (((
... ... @@ -298,7 +298,7 @@
298 298  )))
299 299  
300 300  (((
301 -(% style="color:red" %)Note: if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.
301 +(% style="color:red" %)**Note: if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.**
302 302  )))
303 303  
304 304  (((
... ... @@ -333,9 +333,8 @@
333 333  will execute an uplink after got this command.
334 334  )))
335 335  
336 -(((
337 -
338 338  
337 +(((
339 339  (% style="color:blue" %)**Example:**
340 340  )))
341 341  
... ... @@ -345,35 +345,32 @@
345 345  
346 346  [[image:image-20220601144149-6.png]]
347 347  
348 -DOWNLINK
347 +**DOWNLINK**
349 349  
350 350  
351 -
352 352  [[image:image-20220601143803-3.png]]
353 353  
354 -DOWNLINK
352 +**DOWNLINK**
355 355  
356 356  
357 -
358 358  [[image:image-20220601144053-5.png]]
359 359  
360 -DOWNLINK
357 +**DOWNLINK**
361 361  
362 362  
363 -
364 364  [[image:image-20220601143921-4.png]]
365 365  
366 -DOWNLINK
362 +**DOWNLINK**
367 367  
368 368  
369 -
370 370  [[image:image-20220601142805-5.png]]
371 371  
372 -DOWNLINK
373 -
367 +**DOWNLINK**
374 374  
375 -=== **1.3.4 How to configure and output commands for RS485 to USB** ===
376 376  
370 +=== 1.3.4 How to configure and output commands for RS485 to USB ===
371 +
372 +
377 377  (((
378 378  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.
379 379  )))
... ... @@ -392,26 +392,21 @@
392 392  
393 393  (((
394 394  check digit: Even
395 -
396 -
397 397  )))
398 398  
399 399  [[image:image-20220527093708-21.png]]
400 400  
401 -USB
395 +**USB**
402 402  
403 403  
404 -
405 405  [[image:image-20220527093747-22.png]]
406 406  
407 -USB
400 +**USB**
408 408  
409 409  
410 410  
411 411  (((
412 412  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.
413 -
414 -
415 415  )))
416 416  
417 417  (((
... ... @@ -426,10 +426,10 @@
426 426  
427 427  [[image:image-20220527093821-23.png]]
428 428  
429 -USB
420 +**USB**
430 430  
431 431  
432 -=== **1.3.5 How to configure multiple devices and modify device addresses** ===
423 +=== 1.3.5 How to configure multiple devices and modify device addresses ===
433 433  
434 434  
435 435  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.
... ... @@ -445,6 +445,7 @@
445 445  
446 446  (% style="color:blue" %)**Example**(%%): These two meters are examples of setting parameters and device addresses.
447 447  
439 +
448 448  [[image:image-20220527093950-25.png]]
449 449  
450 450  
... ... @@ -459,7 +459,7 @@
459 459  
460 460  (((
461 461  (((
462 -We can use **AT+CFGDEV** to set the device address.
454 +We can use (% style="color:blue" %)**AT+CFGDEV**(%%) to set the device address.
463 463  )))
464 464  )))
465 465  
... ... @@ -477,9 +477,9 @@
477 477  **AT+CFGDEV:01 10 00 61 00 01 02 00 02,1**
478 478  )))
479 479  
480 -* 01:device adaress
472 +* 01: device adaress
481 481  
482 -* 10:function code
474 +* 10: function code
483 483  
484 484  * 00 61：Register address
485 485  
... ... @@ -503,12 +503,14 @@
503 503  [[image:image-20220601142607-4.png]]
504 504  
505 505  
506 -**PAYLOAD:01 08 DF 43 62**
498 +(% style="color:blue" %)**PAYLOAD: 01 08 DF 43 62**
507 507  
508 508  * 08 DF is the valid value of the meter with device address 02.
509 509  * 43 62 is the valid value of the meter with device address 01.
510 510  
503 +(% style="display:none" %) (%%)
511 511  
505 +
512 512  == 1.4 Example 4: Circuit Breaker Remote Open Close ==
513 513  
514 514  
... ... @@ -518,35 +518,54 @@
518 518  
519 519  [[image:image-20220527094330-30.png]]
520 520  
521 -Connection
515 +**Connection**
522 522  
523 523  
524 -* Configure Documen:  [[Circuit Breaker Remote Open Close>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/Circuit_Breaker_Remote_Open_Close/]]
518 +* Configure Documen:  [[Circuit Breaker Remote Open Close>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/Circuit_Breaker_Remote_Open_Close/||_mstmutation="1"]]
525 525  
526 526  
521 +
527 527  == 1.5 Example 5: SEM Three Energy Meter with RS485-BL or RS485-LN ==
528 528  
529 529  
530 530  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-BL to connect to SEM Three Energy Meter and send the data to mobile phone for remote minitor. The structure is like below:
531 531  
532 -* Configure Document For RS485-BL:  [[Connect to SEM Three>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/RS485-BL/Application_Note/&file=Dragino%20RS485BL%20and%20pickdata%20SEM%20Three%20v1.pdf||style="background-color: rgb(255, 255, 255);"]]
533 -* Configure Document for RS485-LN:  [[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]]
527 +* Configure Document For RS485-BL:  [[Connect to SEM Three>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/RS485-BL/Application_Note/&file=Dragino%20RS485BL%20and%20pickdata%20SEM%20Three%20v1.pdf||_mstmutation="1" style="background-color: rgb(255, 255, 255);"]]
534 534  
529 +* Configure Document for RS485-LN:  [[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||_mstmutation="1"]]
535 535  
531 +
532 +
536 536  == 1.6 Example 6: CEM C31 485-T1-MID Energy Meter with RS485-LN ==
537 537  
538 538  
539 539  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:
540 540  
541 -* Configure Document For RS485-LN:  [[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||style="background-color: rgb(255, 255, 255);"]]
538 +* Configure Document For RS485-LN:  [[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||_mstmutation="1" style="background-color: rgb(255, 255, 255);"]]
542 542  
543 543  
541 +
544 544  == 1.7 Example 7: Schneider Electric PLC M221 with RS485-BL ==
545 545  
546 546  
547 547  [[image:image-20220527094556-31.png]]
548 548  
547 +
549 549  Network Structure
550 550  
551 -
552 552  * [[Reference Instruction>>url:https://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/Schneider%20Electric%20PLC/]]
551 +
552 +
553 +
554 +== 1.8 Example 8: This sketch is supposed to test Dragino RS485-BL (Modbus master), using an Arduino UNO as a Modbus slave. ==
555 +
556 +
557 +This sketch uses 4 registers: some of them can be set by Dragino with a command, another is used to store value from a DS18B20 temperature sensor, or a random generated number. All data is 16bit uint, but the sketch shows also how to represent booleans and negative numbers.
558 +
559 +In the next days I will be adding more documentation, but I think it already explains users how to build their own modbus sensor to pair with Dragino RS485-BL.
560 +
561 +This is released the code under GNU LGPL licence on Github:
562 +
563 +[[https:~~/~~/github.com/zorbaproject/ArduinoModbusForDraginoRS485>>url:https://github.com/zorbaproject/ArduinoModbusForDraginoRS485]]
564 +
565 +

Applications

Navigation

Copyright ©2010-2024 Dragino Technology Co., LTD. All rights reserved
Dragino Wiki v2.0