Last modified by Karry Zhuang on 2024/07/11 11:58
<
From version < 57.15 >
edited by Xiaoling
on 2022/07/14 09:54
To version < 62.1 >
edited by Bei Jinggeng
on 2023/08/08 15:23
>
Change comment: There is no comment for this version

Summary

Details

Page properties
Author
... ... @@ -1,1 +1,1 @@
1 -XWiki.Xiaoling
1 +XWiki.Bei
Content
... ... @@ -7,82 +7,83 @@
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 27  [[image:image-20220527091942-2.png]](% style="display:none" %)
28 28  
29 -Connection
30 +**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);"]]
36 -* [[Video Demo>>url:https://www.youtube.com/watch?v=TAFZ5eaf-MY&t=6s&ab_channel=XavierFlorensaBerenguer]]
35 +* 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);"]]
37 37  
37 +* 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);"]]
38 38  
39 +* [[Video Demo>>url:https://www.youtube.com/watch?v=TAFZ5eaf-MY&t=6s&ab_channel=XavierFlorensaBerenguer]]
39 39  
40 -== **1.2 Example 2: Connect to Pulse Counter** ==
41 +== 1.2 Example 2: Connect to Pulse Counter ==
41 41  
42 42  
43 43  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:
44 44  
45 45  
46 -[[image:image-20220527092058-3.png]]
47 +[[image:image-20220527092058-3.png||height="552" width="905"]]
47 47  
48 -Connection
49 +**Connection**
49 49  
50 50  
51 51  
52 -[[image:image-20220527092146-4.png]]
53 +[[image:image-20220527092146-4.png||height="507" width="906"]]
53 53  
54 -Connection
55 +**Connection**
55 55  
56 56  
57 57  (% style="color:blue" %)**Related documents:**
58 58  
59 -* 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 +
60 60  * [[Dragino Solution in Farm>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/&file=Dragino%20on%20Farms.pptx]]
61 61  
64 +== 1.3 Example 3: Use RS485-LN with energy meters ==
62 62  
66 +=== 1.3.1 OverView ===
63 63  
64 64  
65 -== **1.3 Example3: Use RS485-LN with energy meters** ==
66 -
67 -=== **1.3.1 OverView** ===
68 -
69 -
70 70  (((
71 -(% style="color:red" %)**Note**：The specifications of each energy meter are different, please refer to your own energy meter specifications.
70 +(% style="color:red" %)**Note**：**The specifications of each energy meter are different, please refer to your own energy meter specifications.**
72 72  )))
73 73  
74 74  (((
75 75  This example describes a single-phase meter.This is the connection between the RS485-LN and the energy meter.
75 +
76 +
76 76  )))
77 77  
78 78  [[image:image-20220527092419-5.png]]
79 79  
80 -Connection1
81 +**Connection1**
81 81  
82 82  
83 83  
84 84  (((
85 -**How to connect with Energy Meter：**
86 +(% style="color:blue" %)**How to connect with Energy Meter：**
86 86  
87 87  
88 88  )))
... ... @@ -96,29 +96,31 @@
96 96  )))
97 97  
98 98  (((
99 -Power Source VIN to RS485-LN VIN+
100 +Power Source **VIN** to RS485-LN **VIN+**
100 100  )))
101 101  
102 102  (((
103 -Power Source GND to RS485-LN VIN-
104 +Power Source **GND** to RS485-LN **VIN-**
104 104  )))
105 105  
106 106  (((
107 107  Once there is power, the RS485-LN will be on.
109 +
110 +
108 108  )))
109 109  
110 110  [[image:image-20220527092514-6.png]]
111 111  
112 -Connection2
115 +**Connection2**
113 113  
114 114  
115 115  
116 116  [[image:image-20220527092555-7.png]]
117 117  
118 -Connection3
121 +**Connection3**
119 119  
120 120  
121 -=== **1.3.2 How to use the parameters of the energy meter and MODBUS commands** ===
124 +=== 1.3.2 How to use the parameters of the energy meter and MODBUS commands ===
122 122  
123 123  
124 124  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.
... ... @@ -129,9 +129,13 @@
129 129  (% style="color:blue" %)**Example:**(%%)  AT+COMMAND1=01 03 00 00 00 01 84 0A
130 130  
131 131  * The first byte : slave address code (=001～247)
135 +
132 132  * The second byte : read register value function code
137 +
133 133  * 3rd and 4th bytes: start address of register to be read
139 +
134 134  * 5th and 6th bytes: Number of registers to read
141 +
135 135  * 7th and 8th bytes: CRC16 checksum from bytes 1 to 6.
136 136  
137 137  (((
... ... @@ -144,23 +144,20 @@
144 144  )))
145 145  
146 146  * The first byte ARD: slave address code (=001～254)
154 +
147 147  * The second byte: Return to read function code
156 +
148 148  * 3rd byte: total number of bytes
158 +
149 149  * 4th～5th bytes: register data
160 +
150 150  * The 6th and 7th bytes: CRC16 checksum
162 +
151 151  * 08 FD is register data. Use short integer 16 bits to convert to decimal, get 2301, then 230.1V is the voltage.
152 152  
153 -(% class="wikigeneratedid" %)
154 -(((
155 -
165 +=== 1.3.3 How to configure RS485-LN and parse output commands ===
156 156  
157 157  
158 -
159 -)))
160 -
161 -=== **1.3.3 How to configure RS485-LN and parse output commands** ===
162 -
163 -
164 164  RS485-LN provides two configuration methods: AT COMMAND and DOWNLINK.
165 165  
166 166  
... ... @@ -171,16 +171,18 @@
171 171  
172 172  (((
173 173  If the configured parameters and commands are incorrect, the return value is not obtained.
178 +
179 +
174 174  )))
175 175  
176 176  [[image:image-20220601143201-9.png]]
177 177  
178 -AT COMMAND
184 +**AT COMMAND**
179 179  
180 180  
181 181  (% class="box infomessage" %)
182 182  (((
183 - **AT+DATACUTx **:  This command defines how to handle the return from AT+COMMANDx, max reture length is 40 bytes. AT+DATACUTx=a,b,c
189 + (% _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
184 184  )))
185 185  
186 186  a:  length for the return of AT+COMMAND
... ... @@ -191,16 +191,15 @@
191 191  
192 192  [[image:image-20220601143115-8.png]]
193 193  
194 -AT COMMAND
200 +**AT COMMAND**
195 195  
196 196  
197 197  
198 198  PAYLOAD is available after the valid value is intercepted.
199 199  
200 -
201 201  [[image:image-20220601143046-7.png]]
202 202  
203 -AT COMMAND
208 +**AT COMMAND**
204 204  
205 205  
206 206  
... ... @@ -209,7 +209,7 @@
209 209  [[image:image-20220601143519-1.png]]
210 210  
211 211  (((
212 -AT COMMAND
217 +**AT COMMAND**
213 213  )))
214 214  
215 215  (((
... ... @@ -219,7 +219,7 @@
219 219  (((
220 220  (% style="color:blue" %)**Example**:
221 221  
222 -CMD1: Read current data with MODBUS command. address: 0x03 AT+COMMAND1= 01 03 00 03 00 01,1
227 +(% style="color:red" %)**CMD1:**(%%) Read current data with MODBUS command. address: 0x03 AT+COMMAND1= 01 03 00 03 00 01,1
223 223  )))
224 224  
225 225  (((
... ... @@ -233,7 +233,7 @@
233 233  )))
234 234  
235 235  (((
236 -CMD2: Read voltage data with MODBUS command. address: 0x00 AT+COMMAND2= 01 03 00 00 00 01,1
241 +(% style="color:red" %)**CMD2: **(%%)Read voltage data with MODBUS command. address: 0x00 AT+COMMAND2= 01 03 00 00 00 01,1
237 237  )))
238 238  
239 239  (((
... ... @@ -247,7 +247,7 @@
247 247  )))
248 248  
249 249  (((
250 -CMD3: Read total active energy data with MODBUS command. address: 0x0031 AT+COMMAND3= 01 03 00 31 00 02,1
255 +(% style="color:red" %)**CMD3:**(%%) Read total active energy data with MODBUS command. address: 0x0031 AT+COMMAND3= 01 03 00 31 00 02,1
251 251  )))
252 252  
253 253  (((
... ... @@ -267,14 +267,16 @@
267 267  AT COMMAND
268 268  
269 269  
270 -(% 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.**
271 271  
276 +(% 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.**
272 272  
278 +
273 273  [[image:image-20220601143642-2.png]]
274 274  
275 275  AT COMMAND
276 276  
277 277  
284 +
278 278  ==== **1.3.3.2 via LoRaWAN DOWNLINK** ====
279 279  
280 280  
... ... @@ -281,15 +281,13 @@
281 281  [[image:image-20220527093358-15.png]]
282 282  
283 283  (((
284 -DOWNLINK
291 +**DOWNLINK**
285 285  )))
286 286  
287 -(((
288 -
289 -)))
290 290  
295 +
291 291  (((
292 -(% style="color:#4f81bd" %)**Type Code 0xAF**
297 +(% style="color:blue" %)**Type Code 0xAF**
293 293  )))
294 294  
295 295  (((
... ... @@ -300,7 +300,7 @@
300 300  )))
301 301  
302 302  (((
303 -(% style="color:red" %)Note: if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.
308 +(% style="color:red" %)**Note: if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.**
304 304  )))
305 305  
306 306  (((
... ... @@ -335,9 +335,8 @@
335 335  will execute an uplink after got this command.
336 336  )))
337 337  
338 -(((
339 -
340 340  
344 +(((
341 341  (% style="color:blue" %)**Example:**
342 342  )))
343 343  
... ... @@ -347,35 +347,36 @@
347 347  
348 348  [[image:image-20220601144149-6.png]]
349 349  
350 -DOWNLINK
354 +**DOWNLINK**
351 351  
352 352  
353 353  
354 354  [[image:image-20220601143803-3.png]]
355 355  
356 -DOWNLINK
360 +**DOWNLINK**
357 357  
358 358  
359 359  
360 360  [[image:image-20220601144053-5.png]]
361 361  
362 -DOWNLINK
366 +**DOWNLINK**
363 363  
364 364  
365 365  
366 366  [[image:image-20220601143921-4.png]]
367 367  
368 -DOWNLINK
372 +**DOWNLINK**
369 369  
370 370  
371 371  
372 372  [[image:image-20220601142805-5.png]]
373 373  
374 -DOWNLINK
375 -
378 +**DOWNLINK**
376 376  
377 -=== **1.3.4 How to configure and output commands for RS485 to USB** ===
378 378  
381 +=== 1.3.4 How to configure and output commands for RS485 to USB ===
382 +
383 +
379 379  (((
380 380  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.
381 381  )))
... ... @@ -400,20 +400,18 @@
400 400  
401 401  [[image:image-20220527093708-21.png]]
402 402  
403 -USB
408 +**USB**
404 404  
405 405  
406 406  
407 407  [[image:image-20220527093747-22.png]]
408 408  
409 -USB
414 +**USB**
410 410  
411 411  
412 412  
413 413  (((
414 414  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.
415 -
416 -
417 417  )))
418 418  
419 419  (((
... ... @@ -428,12 +428,13 @@
428 428  
429 429  [[image:image-20220527093821-23.png]]
430 430  
431 -USB
434 +**USB**
432 432  
433 433  
434 -=== **1.3.5 How to configure multiple devices and modify device addresses** ===
435 435  
438 +=== 1.3.5 How to configure multiple devices and modify device addresses ===
436 436  
440 +
437 437  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.
438 438  
439 439  (((
... ... @@ -447,6 +447,7 @@
447 447  
448 448  (% style="color:blue" %)**Example**(%%): These two meters are examples of setting parameters and device addresses.
449 449  
454 +
450 450  [[image:image-20220527093950-25.png]]
451 451  
452 452  
... ... @@ -461,7 +461,7 @@
461 461  
462 462  (((
463 463  (((
464 -We can use **AT+CFGDEV** to set the device address.
469 +We can use (% style="color:blue" %)**AT+CFGDEV**(%%) to set the device address.
465 465  )))
466 466  )))
467 467  
... ... @@ -479,9 +479,9 @@
479 479  **AT+CFGDEV:01 10 00 61 00 01 02 00 02,1**
480 480  )))
481 481  
482 -* 01:device adaress
487 +* 01: device adaress
483 483  
484 -* 10:function code
489 +* 10: function code
485 485  
486 486  * 00 61：Register address
487 487  
... ... @@ -505,11 +505,12 @@
505 505  [[image:image-20220601142607-4.png]]
506 506  
507 507  
508 -**PAYLOAD:01 08 DF 43 62**
513 +(% style="color:blue" %)**PAYLOAD: 01 08 DF 43 62**
509 509  
510 510  * 08 DF is the valid value of the meter with device address 02.
511 511  * 43 62 is the valid value of the meter with device address 01.
512 512  
518 +(% style="display:none" %) (%%)
513 513  
514 514  
515 515  == 1.4 Example 4: Circuit Breaker Remote Open Close ==
... ... @@ -521,38 +521,45 @@
521 521  
522 522  [[image:image-20220527094330-30.png]]
523 523  
524 -Connection
530 +**Connection**
525 525  
526 526  
527 -* 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/]]
533 +* 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"]]
528 528  
529 -
530 -
531 531  == 1.5 Example 5: SEM Three Energy Meter with RS485-BL or RS485-LN ==
532 532  
533 533  
534 534  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:
535 535  
536 -* 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);"]]
537 -* 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]]
540 +* 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);"]]
538 538  
542 +* 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"]]
539 539  
540 -
541 541  == 1.6 Example 6: CEM C31 485-T1-MID Energy Meter with RS485-LN ==
542 542  
543 543  
544 544  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:
545 545  
546 -* 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);"]]
549 +* 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);"]]
547 547  
548 -
549 -
550 550  == 1.7 Example 7: Schneider Electric PLC M221 with RS485-BL ==
551 551  
552 552  
553 553  [[image:image-20220527094556-31.png]]
554 554  
556 +
555 555  Network Structure
556 556  
557 -
558 558  * [[Reference Instruction>>url:https://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/Schneider%20Electric%20PLC/]]
560 +
561 +== 1.8  Example 8: This sketch is supposed to test Dragino RS485-BL (Modbus master), using an Arduino UNO as a Modbus slave. ==
562 +
563 +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.
564 +
565 +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.
566 +
567 +This is released the code under GNU LGPL licence on Github:
568 +
569 +[[https:~~/~~/github.com/zorbaproject/ArduinoModbusForDraginoRS485>>url:https://github.com/zorbaproject/ArduinoModbusForDraginoRS485]]
570 +
571 +

Applications

Navigation

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