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From version < 57.18 >
edited by Xiaoling
on 2022/07/14 10:03
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1 -XWiki.Xiaoling
1 +XWiki.Bei
Content
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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 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);"]]
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);"]]
36 +
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 +
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** ==
41 +== 1.2 Example 2: Connect to Pulse Counter ==
39 39  
40 40  
41 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 42  
43 43  
44 -[[image:image-20220527092058-3.png]]
47 +[[image:image-20220527092058-3.png||height="552" width="905"]]
45 45  
46 -Connection
49 +**Connection**
47 47  
48 48  
49 49  
50 -[[image:image-20220527092146-4.png]]
53 +[[image:image-20220527092146-4.png||height="507" width="906"]]
51 51  
52 -Connection
55 +**Connection**
53 53  
54 54  
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  
64 +== 1.3 Example 3: Use RS485-LN with energy meters ==
60 60  
61 -== **1.3 Example3: Use RS485-LN with energy meters** ==
66 +=== 1.3.1 OverView ===
62 62  
63 63  
64 -=== **1.3.1 OverView** ===
65 -
66 -
67 67  (((
68 -(% 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.**
69 69  )))
70 70  
71 71  (((
72 72  This example describes a single-phase meter.This is the connection between the RS485-LN and the energy meter.
75 +
76 +
73 73  )))
74 74  
75 75  [[image:image-20220527092419-5.png]]
76 76  
77 -Connection1
81 +**Connection1**
78 78  
79 79  
80 80  
... ... @@ -93,28 +93,31 @@
93 93  )))
94 94  
95 95  (((
96 -Power Source VIN to RS485-LN VIN+
100 +Power Source **VIN** to RS485-LN **VIN+**
97 97  )))
98 98  
99 99  (((
100 -Power Source GND to RS485-LN VIN-
104 +Power Source **GND** to RS485-LN **VIN-**
101 101  )))
102 102  
103 103  (((
104 104  Once there is power, the RS485-LN will be on.
109 +
110 +
105 105  )))
106 106  
107 107  [[image:image-20220527092514-6.png]]
108 108  
109 -Connection2
115 +**Connection2**
110 110  
111 111  
118 +
112 112  [[image:image-20220527092555-7.png]]
113 113  
114 -Connection3
121 +**Connection3**
115 115  
116 116  
117 -=== **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 ===
118 118  
119 119  
120 120  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.
... ... @@ -125,9 +125,13 @@
125 125  (% style="color:blue" %)**Example:**(%%)  AT+COMMAND1=01 03 00 00 00 01 84 0A
126 126  
127 127  * The first byte : slave address code (=001～247)
135 +
128 128  * The second byte : read register value function code
137 +
129 129  * 3rd and 4th bytes: start address of register to be read
139 +
130 130  * 5th and 6th bytes: Number of registers to read
141 +
131 131  * 7th and 8th bytes: CRC16 checksum from bytes 1 to 6.
132 132  
133 133  (((
... ... @@ -140,23 +140,20 @@
140 140  )))
141 141  
142 142  * The first byte ARD: slave address code (=001～254)
154 +
143 143  * The second byte: Return to read function code
156 +
144 144  * 3rd byte: total number of bytes
158 +
145 145  * 4th～5th bytes: register data
160 +
146 146  * The 6th and 7th bytes: CRC16 checksum
162 +
147 147  * 08 FD is register data. Use short integer 16 bits to convert to decimal, get 2301, then 230.1V is the voltage.
148 148  
149 -(% class="wikigeneratedid" %)
150 -(((
151 -
165 +=== 1.3.3 How to configure RS485-LN and parse output commands ===
152 152  
153 153  
154 -
155 -)))
156 -
157 -=== **1.3.3 How to configure RS485-LN and parse output commands** ===
158 -
159 -
160 160  RS485-LN provides two configuration methods: AT COMMAND and DOWNLINK.
161 161  
162 162  
... ... @@ -167,16 +167,18 @@
167 167  
168 168  (((
169 169  If the configured parameters and commands are incorrect, the return value is not obtained.
178 +
179 +
170 170  )))
171 171  
172 172  [[image:image-20220601143201-9.png]]
173 173  
174 -AT COMMAND
184 +**AT COMMAND**
175 175  
176 176  
177 177  (% class="box infomessage" %)
178 178  (((
179 - **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
180 180  )))
181 181  
182 182  a:  length for the return of AT+COMMAND
... ... @@ -187,16 +187,15 @@
187 187  
188 188  [[image:image-20220601143115-8.png]]
189 189  
190 -AT COMMAND
200 +**AT COMMAND**
191 191  
192 192  
193 193  
194 194  PAYLOAD is available after the valid value is intercepted.
195 195  
196 -
197 197  [[image:image-20220601143046-7.png]]
198 198  
199 -AT COMMAND
208 +**AT COMMAND**
200 200  
201 201  
202 202  
... ... @@ -205,7 +205,7 @@
205 205  [[image:image-20220601143519-1.png]]
206 206  
207 207  (((
208 -AT COMMAND
217 +**AT COMMAND**
209 209  )))
210 210  
211 211  (((
... ... @@ -263,14 +263,16 @@
263 263  AT COMMAND
264 264  
265 265  
266 -(% 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.**
267 267  
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.**
268 268  
278 +
269 269  [[image:image-20220601143642-2.png]]
270 270  
271 271  AT COMMAND
272 272  
273 273  
284 +
274 274  ==== **1.3.3.2 via LoRaWAN DOWNLINK** ====
275 275  
276 276  
... ... @@ -277,15 +277,13 @@
277 277  [[image:image-20220527093358-15.png]]
278 278  
279 279  (((
280 -DOWNLINK
291 +**DOWNLINK**
281 281  )))
282 282  
283 -(((
284 -
285 -)))
286 286  
295 +
287 287  (((
288 -(% style="color:#4f81bd" %)**Type Code 0xAF**
297 +(% style="color:blue" %)**Type Code 0xAF**
289 289  )))
290 290  
291 291  (((
... ... @@ -296,7 +296,7 @@
296 296  )))
297 297  
298 298  (((
299 -(% 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.**
300 300  )))
301 301  
302 302  (((
... ... @@ -331,9 +331,8 @@
331 331  will execute an uplink after got this command.
332 332  )))
333 333  
334 -(((
335 -
336 336  
344 +(((
337 337  (% style="color:blue" %)**Example:**
338 338  )))
339 339  
... ... @@ -343,35 +343,36 @@
343 343  
344 344  [[image:image-20220601144149-6.png]]
345 345  
346 -DOWNLINK
354 +**DOWNLINK**
347 347  
348 348  
349 349  
350 350  [[image:image-20220601143803-3.png]]
351 351  
352 -DOWNLINK
360 +**DOWNLINK**
353 353  
354 354  
355 355  
356 356  [[image:image-20220601144053-5.png]]
357 357  
358 -DOWNLINK
366 +**DOWNLINK**
359 359  
360 360  
361 361  
362 362  [[image:image-20220601143921-4.png]]
363 363  
364 -DOWNLINK
372 +**DOWNLINK**
365 365  
366 366  
367 367  
368 368  [[image:image-20220601142805-5.png]]
369 369  
370 -DOWNLINK
371 -
378 +**DOWNLINK**
372 372  
373 -=== **1.3.4 How to configure and output commands for RS485 to USB** ===
374 374  
381 +=== 1.3.4 How to configure and output commands for RS485 to USB ===
382 +
383 +
375 375  (((
376 376  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.
377 377  )))
... ... @@ -396,20 +396,18 @@
396 396  
397 397  [[image:image-20220527093708-21.png]]
398 398  
399 -USB
408 +**USB**
400 400  
401 401  
402 402  
403 403  [[image:image-20220527093747-22.png]]
404 404  
405 -USB
414 +**USB**
406 406  
407 407  
408 408  
409 409  (((
410 410  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.
411 -
412 -
413 413  )))
414 414  
415 415  (((
... ... @@ -424,12 +424,13 @@
424 424  
425 425  [[image:image-20220527093821-23.png]]
426 426  
427 -USB
434 +**USB**
428 428  
429 429  
430 -=== **1.3.5 How to configure multiple devices and modify device addresses** ===
431 431  
438 +=== 1.3.5 How to configure multiple devices and modify device addresses ===
432 432  
440 +
433 433  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.
434 434  
435 435  (((
... ... @@ -443,6 +443,7 @@
443 443  
444 444  (% style="color:blue" %)**Example**(%%): These two meters are examples of setting parameters and device addresses.
445 445  
454 +
446 446  [[image:image-20220527093950-25.png]]
447 447  
448 448  
... ... @@ -457,7 +457,7 @@
457 457  
458 458  (((
459 459  (((
460 -We can use **AT+CFGDEV** to set the device address.
469 +We can use (% style="color:blue" %)**AT+CFGDEV**(%%) to set the device address.
461 461  )))
462 462  )))
463 463  
... ... @@ -475,9 +475,9 @@
475 475  **AT+CFGDEV:01 10 00 61 00 01 02 00 02,1**
476 476  )))
477 477  
478 -* 01:device adaress
487 +* 01: device adaress
479 479  
480 -* 10:function code
489 +* 10: function code
481 481  
482 482  * 00 61：Register address
483 483  
... ... @@ -501,11 +501,14 @@
501 501  [[image:image-20220601142607-4.png]]
502 502  
503 503  
504 -**PAYLOAD:01 08 DF 43 62**
513 +(% style="color:blue" %)**PAYLOAD: 01 08 DF 43 62**
505 505  
506 506  * 08 DF is the valid value of the meter with device address 02.
507 507  * 43 62 is the valid value of the meter with device address 01.
508 508  
518 +(% style="display:none" %) (%%)
519 +
520 +
509 509  == 1.4 Example 4: Circuit Breaker Remote Open Close ==
510 510  
511 511  
... ... @@ -515,10 +515,10 @@
515 515  
516 516  [[image:image-20220527094330-30.png]]
517 517  
518 -Connection
530 +**Connection**
519 519  
520 520  
521 -* 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"]]
522 522  
523 523  == 1.5 Example 5: SEM Three Energy Meter with RS485-BL or RS485-LN ==
524 524  
... ... @@ -525,15 +525,16 @@
525 525  
526 526  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:
527 527  
528 -* 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);"]]
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]]
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);"]]
530 530  
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"]]
543 +
531 531  == 1.6 Example 6: CEM C31 485-T1-MID Energy Meter with 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-LN to connect to CEM C31 485-T1-MID and send the data for remote minitor. The structure is like below:
535 535  
536 -* 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);"]]
537 537  
538 538  == 1.7 Example 7: Schneider Electric PLC M221 with RS485-BL ==
539 539  
... ... @@ -540,7 +540,19 @@
540 540  
541 541  [[image:image-20220527094556-31.png]]
542 542  
556 +
543 543  Network Structure
544 544  
545 -
546 546  * [[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 +

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