Last modified by Karry Zhuang on 2024/07/11 11:58
<
From version < 57.19 >
edited by Xiaoling
on 2022/07/14 10:09
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
... ... @@ -7,66 +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 -== **1.2 Example 2: Connect to Pulse Counter** ==
39 39  
40 40  
41 -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:
42 +== 1.2 Example 2: Connect to Pulse Counter ==
42 42  
43 43  
44 -[[image:image-20220527092058-3.png]]
45 +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:
45 45  
46 -Connection
47 47  
48 +[[image:image-20220527092058-3.png||height="552" width="905"]]
48 48  
50 +**Connection**
49 49  
50 -[[image:image-20220527092146-4.png]]
51 51  
52 -Connection
53 +[[image:image-20220527092146-4.png||height="507" width="906"]]
53 53  
55 +**Connection**
54 54  
57 +
55 55  (% style="color:blue" %)**Related documents:**
56 56  
57 -* 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 +
58 58  * [[Dragino Solution in Farm>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/&file=Dragino%20on%20Farms.pptx]]
59 59  
60 60  
61 61  
62 -== **1.3 Example3: Use RS485-LN with energy meters** ==
66 +== 1.3 Example 3: Use RS485-LN with energy meters ==
63 63  
68 +=== 1.3.1 OverView ===
64 64  
65 -=== **1.3.1 OverView** ===
66 66  
67 -
68 68  (((
69 -(% 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.**
70 70  )))
71 71  
72 72  (((
... ... @@ -75,10 +75,9 @@
75 75  
76 76  [[image:image-20220527092419-5.png]]
77 77  
78 -Connection1
81 +**Connection1**
79 79  
80 80  
81 -
82 82  (((
83 83  (% style="color:blue" %)**How to connect with Energy Meter：**
84 84  
... ... @@ -94,11 +94,11 @@
94 94  )))
95 95  
96 96  (((
97 -Power Source VIN to RS485-LN VIN+
99 +Power Source **VIN** to RS485-LN **VIN+**
98 98  )))
99 99  
100 100  (((
101 -Power Source GND to RS485-LN VIN-
103 +Power Source **GND** to RS485-LN **VIN-**
102 102  )))
103 103  
104 104  (((
... ... @@ -107,15 +107,15 @@
107 107  
108 108  [[image:image-20220527092514-6.png]]
109 109  
110 -Connection2
112 +**Connection2**
111 111  
112 112  
113 113  [[image:image-20220527092555-7.png]]
114 114  
115 -Connection3
117 +**Connection3**
116 116  
117 117  
118 -=== **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 ===
119 119  
120 120  
121 121  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.
... ... @@ -126,9 +126,13 @@
126 126  (% style="color:blue" %)**Example:**(%%)  AT+COMMAND1=01 03 00 00 00 01 84 0A
127 127  
128 128  * The first byte : slave address code (=001～247)
131 +
129 129  * The second byte : read register value function code
133 +
130 130  * 3rd and 4th bytes: start address of register to be read
135 +
131 131  * 5th and 6th bytes: Number of registers to read
137 +
132 132  * 7th and 8th bytes: CRC16 checksum from bytes 1 to 6.
133 133  
134 134  (((
... ... @@ -141,23 +141,22 @@
141 141  )))
142 142  
143 143  * The first byte ARD: slave address code (=001～254)
150 +
144 144  * The second byte: Return to read function code
152 +
145 145  * 3rd byte: total number of bytes
154 +
146 146  * 4th～5th bytes: register data
156 +
147 147  * The 6th and 7th bytes: CRC16 checksum
158 +
148 148  * 08 FD is register data. Use short integer 16 bits to convert to decimal, get 2301, then 230.1V is the voltage.
149 149  
150 -(% class="wikigeneratedid" %)
151 -(((
152 -
153 153  
154 154  
155 -
156 -)))
163 +=== 1.3.3 How to configure RS485-LN and parse output commands ===
157 157  
158 -=== **1.3.3 How to configure RS485-LN and parse output commands** ===
159 159  
160 -
161 161  RS485-LN provides two configuration methods: AT COMMAND and DOWNLINK.
162 162  
163 163  
... ... @@ -168,16 +168,18 @@
168 168  
169 169  (((
170 170  If the configured parameters and commands are incorrect, the return value is not obtained.
176 +
177 +
171 171  )))
172 172  
173 173  [[image:image-20220601143201-9.png]]
174 174  
175 -AT COMMAND
182 +**AT COMMAND**
176 176  
177 177  
178 178  (% class="box infomessage" %)
179 179  (((
180 - **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
181 181  )))
182 182  
183 183  a:  length for the return of AT+COMMAND
... ... @@ -188,25 +188,22 @@
188 188  
189 189  [[image:image-20220601143115-8.png]]
190 190  
191 -AT COMMAND
198 +**AT COMMAND**
192 192  
193 193  
194 -
195 195  PAYLOAD is available after the valid value is intercepted.
196 196  
197 -
198 198  [[image:image-20220601143046-7.png]]
199 199  
200 -AT COMMAND
205 +**AT COMMAND**
201 201  
202 202  
203 -
204 204  You can get configured PAYLOAD on TTN.
205 205  
206 206  [[image:image-20220601143519-1.png]]
207 207  
208 208  (((
209 -AT COMMAND
213 +**AT COMMAND**
210 210  )))
211 211  
212 212  (((
... ... @@ -264,7 +264,7 @@
264 264  AT COMMAND
265 265  
266 266  
267 -(% 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.**
268 268  
269 269  
270 270  [[image:image-20220601143642-2.png]]
... ... @@ -278,15 +278,12 @@
278 278  [[image:image-20220527093358-15.png]]
279 279  
280 280  (((
281 -DOWNLINK
285 +**DOWNLINK**
282 282  )))
283 283  
284 -(((
285 -
286 -)))
287 287  
288 288  (((
289 -(% style="color:#4f81bd" %)**Type Code 0xAF**
290 +(% style="color:blue" %)**Type Code 0xAF**
290 290  )))
291 291  
292 292  (((
... ... @@ -297,7 +297,7 @@
297 297  )))
298 298  
299 299  (((
300 -(% 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.**
301 301  )))
302 302  
303 303  (((
... ... @@ -332,9 +332,8 @@
332 332  will execute an uplink after got this command.
333 333  )))
334 334  
335 -(((
336 -
337 337  
337 +(((
338 338  (% style="color:blue" %)**Example:**
339 339  )))
340 340  
... ... @@ -344,35 +344,32 @@
344 344  
345 345  [[image:image-20220601144149-6.png]]
346 346  
347 -DOWNLINK
347 +**DOWNLINK**
348 348  
349 349  
350 -
351 351  [[image:image-20220601143803-3.png]]
352 352  
353 -DOWNLINK
352 +**DOWNLINK**
354 354  
355 355  
356 -
357 357  [[image:image-20220601144053-5.png]]
358 358  
359 -DOWNLINK
357 +**DOWNLINK**
360 360  
361 361  
362 -
363 363  [[image:image-20220601143921-4.png]]
364 364  
365 -DOWNLINK
362 +**DOWNLINK**
366 366  
367 367  
368 -
369 369  [[image:image-20220601142805-5.png]]
370 370  
371 -DOWNLINK
372 -
367 +**DOWNLINK**
373 373  
374 -=== **1.3.4 How to configure and output commands for RS485 to USB** ===
375 375  
370 +=== 1.3.4 How to configure and output commands for RS485 to USB ===
371 +
372 +
376 376  (((
377 377  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.
378 378  )))
... ... @@ -391,26 +391,21 @@
391 391  
392 392  (((
393 393  check digit: Even
394 -
395 -
396 396  )))
397 397  
398 398  [[image:image-20220527093708-21.png]]
399 399  
400 -USB
395 +**USB**
401 401  
402 402  
403 -
404 404  [[image:image-20220527093747-22.png]]
405 405  
406 -USB
400 +**USB**
407 407  
408 408  
409 409  
410 410  (((
411 411  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.
412 -
413 -
414 414  )))
415 415  
416 416  (((
... ... @@ -425,10 +425,10 @@
425 425  
426 426  [[image:image-20220527093821-23.png]]
427 427  
428 -USB
420 +**USB**
429 429  
430 430  
431 -=== **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 ===
432 432  
433 433  
434 434  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.
... ... @@ -444,6 +444,7 @@
444 444  
445 445  (% style="color:blue" %)**Example**(%%): These two meters are examples of setting parameters and device addresses.
446 446  
439 +
447 447  [[image:image-20220527093950-25.png]]
448 448  
449 449  
... ... @@ -458,7 +458,7 @@
458 458  
459 459  (((
460 460  (((
461 -We can use **AT+CFGDEV** to set the device address.
454 +We can use (% style="color:blue" %)**AT+CFGDEV**(%%) to set the device address.
462 462  )))
463 463  )))
464 464  
... ... @@ -476,9 +476,9 @@
476 476  **AT+CFGDEV:01 10 00 61 00 01 02 00 02,1**
477 477  )))
478 478  
479 -* 01:device adaress
472 +* 01: device adaress
480 480  
481 -* 10:function code
474 +* 10: function code
482 482  
483 483  * 00 61：Register address
484 484  
... ... @@ -502,11 +502,14 @@
502 502  [[image:image-20220601142607-4.png]]
503 503  
504 504  
505 -**PAYLOAD:01 08 DF 43 62**
498 +(% style="color:blue" %)**PAYLOAD: 01 08 DF 43 62**
506 506  
507 507  * 08 DF is the valid value of the meter with device address 02.
508 508  * 43 62 is the valid value of the meter with device address 01.
509 509  
503 +(% style="display:none" %) (%%)
504 +
505 +
510 510  == 1.4 Example 4: Circuit Breaker Remote Open Close ==
511 511  
512 512  
... ... @@ -516,32 +516,54 @@
516 516  
517 517  [[image:image-20220527094330-30.png]]
518 518  
519 -Connection
515 +**Connection**
520 520  
521 521  
522 -* 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"]]
523 523  
520 +
521 +
524 524  == 1.5 Example 5: SEM Three Energy Meter with RS485-BL or RS485-LN ==
525 525  
526 526  
527 527  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:
528 528  
529 -* 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);"]]
530 -* 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);"]]
531 531  
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"]]
530 +
531 +
532 +
532 532  == 1.6 Example 6: CEM C31 485-T1-MID Energy Meter with RS485-LN ==
533 533  
534 534  
535 535  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:
536 536  
537 -* 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);"]]
538 538  
540 +
541 +
539 539  == 1.7 Example 7: Schneider Electric PLC M221 with RS485-BL ==
540 540  
541 541  
542 542  [[image:image-20220527094556-31.png]]
543 543  
547 +
544 544  Network Structure
545 545  
546 -
547 547  * [[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