Last modified by Karry Zhuang on 2024/07/11 11:58
<
From version < 57.14 >
edited by Xiaoling
on 2022/07/14 09:50
To version < 65.1 >
edited by Karry Zhuang
on 2024/07/11 11:52
>
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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 -Related documents:
32 +(% style="color:blue" %)**Related documents:**
33 33  
34 -* [[Solar Pump with Dragino>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/Relay_VFD/]] : System Structure
35 -* [[Configure Manual>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/Relay_VFD/]] : Explanation on how to integrate to Node-red and to the Mobile Phone, and with link to the Github code.
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  
41 +== 1.2 Example 2: Connect to Pulse Counter ==
40 40  
43 +
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  
52 +[[image:image-20220527092146-4.png||height="507" width="906"]]
49 49  
50 -[[image:image-20220527092146-4.png]]
54 +**Connection**
51 51  
52 -Connection
53 53  
57 +(% style="color:blue" %)**Related documents:**
54 54  
55 -* 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 +
56 56  * [[Dragino Solution in Farm>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/&file=Dragino%20on%20Farms.pptx]]
57 57  
58 -== **1.3 Example3: Use RS485-LN with energy meters** ==
59 59  
60 -=== **1.3.1 OverView** ===
64 +== 1.3 Example 3: Use RS485-LN with energy meters ==
61 61  
66 +=== 1.3.1 OverView ===
62 62  
68 +
63 63  (((
64 -(% 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.**
65 65  )))
66 66  
67 67  (((
... ... @@ -70,12 +70,11 @@
70 70  
71 71  [[image:image-20220527092419-5.png]]
72 72  
73 -Connection1
79 +**Connection1**
74 74  
75 75  
76 -
77 77  (((
78 -**How to connect with Energy Meter：**
83 +(% style="color:blue" %)**How to connect with Energy Meter：**
79 79  
80 80  
81 81  )))
... ... @@ -89,11 +89,11 @@
89 89  )))
90 90  
91 91  (((
92 -Power Source VIN to RS485-LN VIN+
97 +Power Source **VIN** to RS485-LN **VIN+**
93 93  )))
94 94  
95 95  (((
96 -Power Source GND to RS485-LN VIN-
101 +Power Source **GND** to RS485-LN **VIN-**
97 97  )))
98 98  
99 99  (((
... ... @@ -102,16 +102,15 @@
102 102  
103 103  [[image:image-20220527092514-6.png]]
104 104  
105 -Connection2
110 +**Connection2**
106 106  
107 107  
108 -
109 109  [[image:image-20220527092555-7.png]]
110 110  
111 -Connection3
115 +**Connection3**
112 112  
113 113  
114 -=== **1.3.2 How to use the parameters of the energy meter and MODBUS commands** ===
118 +=== 1.3.2 How to use the parameters of the energy meter and MODBUS commands ===
115 115  
116 116  
117 117  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.
... ... @@ -122,9 +122,13 @@
122 122  (% style="color:blue" %)**Example:**(%%)  AT+COMMAND1=01 03 00 00 00 01 84 0A
123 123  
124 124  * The first byte : slave address code (=001～247)
129 +
125 125  * The second byte : read register value function code
131 +
126 126  * 3rd and 4th bytes: start address of register to be read
133 +
127 127  * 5th and 6th bytes: Number of registers to read
135 +
128 128  * 7th and 8th bytes: CRC16 checksum from bytes 1 to 6.
129 129  
130 130  (((
... ... @@ -137,23 +137,21 @@
137 137  )))
138 138  
139 139  * The first byte ARD: slave address code (=001～254)
148 +
140 140  * The second byte: Return to read function code
150 +
141 141  * 3rd byte: total number of bytes
152 +
142 142  * 4th～5th bytes: register data
154 +
143 143  * The 6th and 7th bytes: CRC16 checksum
156 +
144 144  * 08 FD is register data. Use short integer 16 bits to convert to decimal, get 2301, then 230.1V is the voltage.
145 145  
146 -(% class="wikigeneratedid" %)
147 -(((
148 -
149 149  
160 +=== 1.3.3 How to configure RS485-LN and parse output commands ===
150 150  
151 -
152 -)))
153 153  
154 -=== **1.3.3 How to configure RS485-LN and parse output commands** ===
155 -
156 -
157 157  RS485-LN provides two configuration methods: AT COMMAND and DOWNLINK.
158 158  
159 159  
... ... @@ -164,16 +164,18 @@
164 164  
165 165  (((
166 166  If the configured parameters and commands are incorrect, the return value is not obtained.
173 +
174 +
167 167  )))
168 168  
169 169  [[image:image-20220601143201-9.png]]
170 170  
171 -AT COMMAND
179 +**AT COMMAND**
172 172  
173 173  
174 174  (% class="box infomessage" %)
175 175  (((
176 - **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
177 177  )))
178 178  
179 179  a:  length for the return of AT+COMMAND
... ... @@ -184,25 +184,22 @@
184 184  
185 185  [[image:image-20220601143115-8.png]]
186 186  
187 -AT COMMAND
195 +**AT COMMAND**
188 188  
189 189  
190 -
191 191  PAYLOAD is available after the valid value is intercepted.
192 192  
193 -
194 194  [[image:image-20220601143046-7.png]]
195 195  
196 -AT COMMAND
202 +**AT COMMAND**
197 197  
198 198  
199 -
200 200  You can get configured PAYLOAD on TTN.
201 201  
202 202  [[image:image-20220601143519-1.png]]
203 203  
204 204  (((
205 -AT COMMAND
210 +**AT COMMAND**
206 206  )))
207 207  
208 208  (((
... ... @@ -212,7 +212,7 @@
212 212  (((
213 213  (% style="color:blue" %)**Example**:
214 214  
215 -CMD1: Read current data with MODBUS command. address: 0x03 AT+COMMAND1= 01 03 00 03 00 01,1
220 +(% style="color:red" %)**CMD1:**(%%) Read current data with MODBUS command. address: 0x03 AT+COMMAND1= 01 03 00 03 00 01,1
216 216  )))
217 217  
218 218  (((
... ... @@ -226,7 +226,7 @@
226 226  )))
227 227  
228 228  (((
229 -CMD2: Read voltage data with MODBUS command. address: 0x00 AT+COMMAND2= 01 03 00 00 00 01,1
234 +(% style="color:red" %)**CMD2: **(%%)Read voltage data with MODBUS command. address: 0x00 AT+COMMAND2= 01 03 00 00 00 01,1
230 230  )))
231 231  
232 232  (((
... ... @@ -240,7 +240,7 @@
240 240  )))
241 241  
242 242  (((
243 -CMD3: Read total active energy data with MODBUS command. address: 0x0031 AT+COMMAND3= 01 03 00 31 00 02,1
248 +(% style="color:red" %)**CMD3:**(%%) Read total active energy data with MODBUS command. address: 0x0031 AT+COMMAND3= 01 03 00 31 00 02,1
244 244  )))
245 245  
246 246  (((
... ... @@ -260,7 +260,7 @@
260 260  AT COMMAND
261 261  
262 262  
263 -(% 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.**
264 264  
265 265  
266 266  [[image:image-20220601143642-2.png]]
... ... @@ -274,15 +274,12 @@
274 274  [[image:image-20220527093358-15.png]]
275 275  
276 276  (((
277 -DOWNLINK
282 +**DOWNLINK**
278 278  )))
279 279  
280 -(((
281 -
282 -)))
283 283  
284 284  (((
285 -(% style="color:#4f81bd" %)**Type Code 0xAF**
287 +(% style="color:blue" %)**Type Code 0xAF**
286 286  )))
287 287  
288 288  (((
... ... @@ -293,7 +293,7 @@
293 293  )))
294 294  
295 295  (((
296 -(% 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.**
297 297  )))
298 298  
299 299  (((
... ... @@ -328,9 +328,8 @@
328 328  will execute an uplink after got this command.
329 329  )))
330 330  
331 -(((
332 -
333 333  
334 +(((
334 334  (% style="color:blue" %)**Example:**
335 335  )))
336 336  
... ... @@ -340,35 +340,32 @@
340 340  
341 341  [[image:image-20220601144149-6.png]]
342 342  
343 -DOWNLINK
344 +**DOWNLINK**
344 344  
345 345  
346 -
347 347  [[image:image-20220601143803-3.png]]
348 348  
349 -DOWNLINK
349 +**DOWNLINK**
350 350  
351 351  
352 -
353 353  [[image:image-20220601144053-5.png]]
354 354  
355 -DOWNLINK
354 +**DOWNLINK**
356 356  
357 357  
358 -
359 359  [[image:image-20220601143921-4.png]]
360 360  
361 -DOWNLINK
359 +**DOWNLINK**
362 362  
363 363  
364 -
365 365  [[image:image-20220601142805-5.png]]
366 366  
367 -DOWNLINK
368 -
364 +**DOWNLINK**
369 369  
370 -=== **1.3.4 How to configure and output commands for RS485 to USB** ===
371 371  
367 +=== 1.3.4 How to configure and output commands for RS485 to USB ===
368 +
369 +
372 372  (((
373 373  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.
374 374  )))
... ... @@ -387,26 +387,21 @@
387 387  
388 388  (((
389 389  check digit: Even
390 -
391 -
392 392  )))
393 393  
394 394  [[image:image-20220527093708-21.png]]
395 395  
396 -USB
392 +**USB**
397 397  
398 398  
399 -
400 400  [[image:image-20220527093747-22.png]]
401 401  
402 -USB
397 +**USB**
403 403  
404 404  
405 405  
406 406  (((
407 407  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.
408 -
409 -
410 410  )))
411 411  
412 412  (((
... ... @@ -421,10 +421,10 @@
421 421  
422 422  [[image:image-20220527093821-23.png]]
423 423  
424 -USB
417 +**USB**
425 425  
426 426  
427 -=== **1.3.5 How to configure multiple devices and modify device addresses** ===
420 +=== 1.3.5 How to configure multiple devices and modify device addresses ===
428 428  
429 429  
430 430  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.
... ... @@ -440,6 +440,7 @@
440 440  
441 441  (% style="color:blue" %)**Example**(%%): These two meters are examples of setting parameters and device addresses.
442 442  
436 +
443 443  [[image:image-20220527093950-25.png]]
444 444  
445 445  
... ... @@ -454,7 +454,7 @@
454 454  
455 455  (((
456 456  (((
457 -We can use **AT+CFGDEV** to set the device address.
451 +We can use (% style="color:blue" %)**AT+CFGDEV**(%%) to set the device address.
458 458  )))
459 459  )))
460 460  
... ... @@ -472,9 +472,9 @@
472 472  **AT+CFGDEV:01 10 00 61 00 01 02 00 02,1**
473 473  )))
474 474  
475 -* 01:device adaress
469 +* 01: device adaress
476 476  
477 -* 10:function code
471 +* 10: function code
478 478  
479 479  * 00 61：Register address
480 480  
... ... @@ -498,14 +498,14 @@
498 498  [[image:image-20220601142607-4.png]]
499 499  
500 500  
501 -**PAYLOAD:01 08 DF 43 62**
495 +(% style="color:blue" %)**PAYLOAD: 01 08 DF 43 62**
502 502  
503 503  * 08 DF is the valid value of the meter with device address 02.
504 504  * 43 62 is the valid value of the meter with device address 01.
505 505  
500 +(% style="display:none" %) (%%)
506 506  
507 507  
508 -
509 509  == 1.4 Example 4: Circuit Breaker Remote Open Close ==
510 510  
511 511  
... ... @@ -515,41 +515,59 @@
515 515  
516 516  [[image:image-20220527094330-30.png]]
517 517  
518 -Connection
512 +**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/]]
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"]]
522 522  
523 523  
524 -
525 -
526 526  == 1.5 Example 5: SEM Three Energy Meter with RS485-BL or RS485-LN ==
527 527  
528 528  
529 529  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:
530 530  
531 -* 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);"]]
532 -* 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);"]]
533 533  
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"]]
534 534  
535 535  
536 -
537 537  == 1.6 Example 6: CEM C31 485-T1-MID Energy Meter with RS485-LN ==
538 538  
539 539  
540 540  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:
541 541  
542 -* 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);"]]
543 543  
544 544  
545 -
546 -
547 547  == 1.7 Example 7: Schneider Electric PLC M221 with RS485-BL ==
548 548  
549 549  
550 550  [[image:image-20220527094556-31.png]]
551 551  
541 +
552 552  Network Structure
553 553  
554 -
555 555  * [[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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