Last modified by Karry Zhuang on 2024/07/11 11:58
<
From version < 57.21 >
edited by Xiaoling
on 2022/07/14 10:12
To version < 79.1 >
edited by Karry Zhuang
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>
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1 -XWiki.Xiaoling
1 +XWiki.karry
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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);"]]
36 -* [[Video Demo>>url:https://www.youtube.com/watch?v=TAFZ5eaf-MY&t=6s&ab_channel=XavierFlorensaBerenguer]]
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);"]]
37 37  
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);"]]
38 38  
38 +* [[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 41  
41 +== 1.2 Example 2: Connect to Pulse Counter ==
42 42  
43 +
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  
52 +[[image:image-20220527092146-4.png||height="507" width="906"]]
51 51  
52 -[[image:image-20220527092146-4.png]]
54 +**Connection**
53 53  
54 -Connection
55 55  
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/]]
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/||_mstmutation="1"]]
60 +
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  
62 62  
63 -== **1.3 Example3: Use RS485-LN with energy meters** ==
64 +== 1.3 Example 3: Use RS485-LN with energy meters ==
64 64  
66 +=== 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.
70 +(% 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
79 +**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+
97 +Power Source **VIN** to RS485-LN **VIN+**
99 99  )))
100 100  
101 101  (((
102 -Power Source GND to RS485-LN VIN-
101 +Power Source **GND** to RS485-LN **VIN-**
103 103  )))
104 104  
105 105  (((
... ... @@ -108,18 +108,17 @@
108 108  
109 109  [[image:image-20220527092514-6.png]]
110 110  
111 -Connection2
110 +**Connection2**
112 112  
113 113  
114 114  [[image:image-20220527092555-7.png]]
115 115  
116 -Connection3
115 +**Connection3**
117 117  
118 118  
118 +=== 1.3.2 How to use the parameters of the energy meter and MODBUS commands ===
119 119  
120 -=== **1.3.2 How to use the parameters of the energy meter and MODBUS commands** ===
121 121  
122 -
123 123  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.
124 124  
125 125  [[image:image-20220601143257-10.png]]
... ... @@ -128,9 +128,13 @@
128 128  (% style="color:blue" %)**Example:**(%%)  AT+COMMAND1=01 03 00 00 00 01 84 0A
129 129  
130 130  * The first byte : slave address code (=001～247)
129 +
131 131  * The second byte : read register value function code
131 +
132 132  * 3rd and 4th bytes: start address of register to be read
133 +
133 133  * 5th and 6th bytes: Number of registers to read
135 +
134 134  * 7th and 8th bytes: CRC16 checksum from bytes 1 to 6.
135 135  
136 136  (((
... ... @@ -143,27 +143,24 @@
143 143  )))
144 144  
145 145  * The first byte ARD: slave address code (=001～254)
148 +
146 146  * The second byte: Return to read function code
150 +
147 147  * 3rd byte: total number of bytes
152 +
148 148  * 4th～5th bytes: register data
154 +
149 149  * The 6th and 7th bytes: CRC16 checksum
156 +
150 150  * 08 FD is register data. Use short integer 16 bits to convert to decimal, get 2301, then 230.1V is the voltage.
151 151  
152 -(% class="wikigeneratedid" %)
153 -(((
154 -
155 155  
160 +=== 1.3.3 How to configure RS485-LN and parse output commands ===
156 156  
157 -
158 -)))
159 159  
160 -=== **1.3.3 How to configure RS485-LN and parse output commands** ===
161 -
162 -
163 163  RS485-LN provides two configuration methods: AT COMMAND and DOWNLINK.
164 164  
165 165  
166 -
167 167  ==== **1.3.3.1 via AT COMMAND** ====
168 168  
169 169  
... ... @@ -171,16 +171,18 @@
171 171  
172 172  (((
173 173  If the configured parameters and commands are incorrect, the return value is not obtained.
173 +
174 +
174 174  )))
175 175  
176 176  [[image:image-20220601143201-9.png]]
177 177  
178 -AT COMMAND
179 +**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
184 + (% _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
... ... @@ -191,25 +191,22 @@
191 191  
192 192  [[image:image-20220601143115-8.png]]
193 193  
194 -AT COMMAND
195 +**AT COMMAND**
195 195  
196 196  
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
202 +**AT COMMAND**
204 204  
205 205  
206 -
207 207  You can get configured PAYLOAD on TTN.
208 208  
209 209  [[image:image-20220601143519-1.png]]
210 210  
211 211  (((
212 -AT COMMAND
210 +**AT COMMAND**
213 213  )))
214 214  
215 215  (((
... ... @@ -267,7 +267,7 @@
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.**
268 +(% 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.**
271 271  
272 272  
273 273  [[image:image-20220601143642-2.png]]
... ... @@ -275,7 +275,6 @@
275 275  AT COMMAND
276 276  
277 277  
278 -
279 279  ==== **1.3.3.2 via LoRaWAN DOWNLINK** ====
280 280  
281 281  
... ... @@ -282,15 +282,12 @@
282 282  [[image:image-20220527093358-15.png]]
283 283  
284 284  (((
285 -DOWNLINK
282 +**DOWNLINK**
286 286  )))
287 287  
288 -(((
289 -
290 -)))
291 291  
292 292  (((
293 -(% style="color:#4f81bd" %)**Type Code 0xAF**
287 +(% style="color:blue" %)**Type Code 0xAF**
294 294  )))
295 295  
296 296  (((
... ... @@ -301,7 +301,7 @@
301 301  )))
302 302  
303 303  (((
304 -(% style="color:red" %)Note: if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.
298 +(% style="color:red" %)**Note: if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.**
305 305  )))
306 306  
307 307  (((
... ... @@ -336,9 +336,8 @@
336 336  will execute an uplink after got this command.
337 337  )))
338 338  
339 -(((
340 -
341 341  
334 +(((
342 342  (% style="color:blue" %)**Example:**
343 343  )))
344 344  
... ... @@ -348,36 +348,32 @@
348 348  
349 349  [[image:image-20220601144149-6.png]]
350 350  
351 -DOWNLINK
344 +**DOWNLINK**
352 352  
353 353  
354 -
355 355  [[image:image-20220601143803-3.png]]
356 356  
357 -DOWNLINK
349 +**DOWNLINK**
358 358  
359 359  
360 -
361 361  [[image:image-20220601144053-5.png]]
362 362  
363 -DOWNLINK
354 +**DOWNLINK**
364 364  
365 365  
366 -
367 367  [[image:image-20220601143921-4.png]]
368 368  
369 -DOWNLINK
359 +**DOWNLINK**
370 370  
371 371  
372 -
373 373  [[image:image-20220601142805-5.png]]
374 374  
375 -DOWNLINK
376 -
364 +**DOWNLINK**
377 377  
378 378  
379 -=== **1.3.4 How to configure and output commands for RS485 to USB** ===
367 +=== 1.3.4 How to configure and output commands for RS485 to USB ===
380 380  
369 +
381 381  (((
382 382  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.
383 383  )))
... ... @@ -396,26 +396,21 @@
396 396  
397 397  (((
398 398  check digit: Even
399 -
400 -
401 401  )))
402 402  
403 403  [[image:image-20220527093708-21.png]]
404 404  
405 -USB
392 +**USB**
406 406  
407 407  
408 -
409 409  [[image:image-20220527093747-22.png]]
410 410  
411 -USB
397 +**USB**
412 412  
413 413  
414 414  
415 415  (((
416 416  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.
417 -
418 -
419 419  )))
420 420  
421 421  (((
... ... @@ -430,13 +430,12 @@
430 430  
431 431  [[image:image-20220527093821-23.png]]
432 432  
433 -USB
417 +**USB**
434 434  
435 435  
420 +=== 1.3.5 How to configure multiple devices and modify device addresses ===
436 436  
437 -=== **1.3.5 How to configure multiple devices and modify device addresses** ===
438 438  
439 -
440 440  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.
441 441  
442 442  (((
... ... @@ -450,6 +450,7 @@
450 450  
451 451  (% style="color:blue" %)**Example**(%%): These two meters are examples of setting parameters and device addresses.
452 452  
436 +
453 453  [[image:image-20220527093950-25.png]]
454 454  
455 455  
... ... @@ -464,7 +464,7 @@
464 464  
465 465  (((
466 466  (((
467 -We can use **AT+CFGDEV** to set the device address.
451 +We can use (% style="color:blue" %)**AT+CFGDEV**(%%) to set the device address.
468 468  )))
469 469  )))
470 470  
... ... @@ -482,9 +482,9 @@
482 482  **AT+CFGDEV:01 10 00 61 00 01 02 00 02,1**
483 483  )))
484 484  
485 -* 01:device adaress
469 +* 01: device adaress
486 486  
487 -* 10:function code
471 +* 10: function code
488 488  
489 489  * 00 61：Register address
490 490  
... ... @@ -513,9 +513,9 @@
513 513  * 08 DF is the valid value of the meter with device address 02.
514 514  * 43 62 is the valid value of the meter with device address 01.
515 515  
500 +(% style="display:none" %) (%%)
516 516  
517 517  
518 -
519 519  == 1.4 Example 4: Circuit Breaker Remote Open Close ==
520 520  
521 521  
... ... @@ -525,35 +525,59 @@
525 525  
526 526  [[image:image-20220527094330-30.png]]
527 527  
528 -Connection
512 +**Connection**
529 529  
530 530  
531 -* 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/]]
515 +* 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"]]
532 532  
533 533  
534 -
535 -
536 536  == 1.5 Example 5: SEM Three Energy Meter with RS485-BL or 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-BL to connect to SEM Three Energy Meter and send the data to mobile phone for remote minitor. The structure is like below:
540 540  
541 -* 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);"]]
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]]
523 +* 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);"]]
543 543  
525 +* 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"]]
526 +
527 +
544 544  == 1.6 Example 6: CEM C31 485-T1-MID Energy Meter with RS485-LN ==
545 545  
546 546  
547 547  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:
548 548  
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||style="background-color: rgb(255, 255, 255);"]]
533 +* 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);"]]
550 550  
535 +
551 551  == 1.7 Example 7: Schneider Electric PLC M221 with RS485-BL ==
552 552  
553 553  
554 554  [[image:image-20220527094556-31.png]]
555 555  
541 +
556 556  Network Structure
557 557  
558 -
559 559  * [[Reference Instruction>>url:https://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/Schneider%20Electric%20PLC/]]
545 +
546 +
547 +== 1.8 Example 8: This sketch is supposed to test Dragino RS485-BL (Modbus master), using an Arduino UNO as a Modbus slave. ==
548 +
549 +
550 +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.
551 +
552 +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.
553 +
554 +This is released the code under GNU LGPL licence on Github:
555 +
556 +[[https:~~/~~/github.com/zorbaproject/ArduinoModbusForDraginoRS485>>url:https://github.com/zorbaproject/ArduinoModbusForDraginoRS485]]
557 +
558 +
559 +== 1.9 Example 9: RS485-LN and ultrasonic flow meter transmission data ==
560 +
561 +
562 +It shows how to use RS485-LN to connect to an ultrasonic flow meter and read the data from the ultrasonic flow meter.
563 +
564 +
565 +
566 +* **Specific steps**:  RS485-LN with ultrasonic flow meter
567 +*
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