Last modified by Karry Zhuang on 2024/07/11 11:58
<
From version < 60.8 >
edited by Xiaoling
on 2022/09/19 16:08
To version < 61.1 >
edited by Bei Jinggeng
on 2023/08/08 15:16
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Author
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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 16  
17 -== **1.1 Example 1: Connect to Leak relay and VFD** ==
18 18  
19 -
20 20  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:
21 21  
22 22  
23 -[[image:image-20220527091852-1.png]]
22 +[[image:image-20220527091852-1.png||height="547" width="994"]]
24 24  
25 -Connection
24 +**Connection**
26 26  
27 27  
28 28  
29 29  [[image:image-20220527091942-2.png]](% style="display:none" %)
30 30  
31 -Connection
30 +**Connection**
32 32  
33 33  
34 34  (% style="color:blue" %)**Related documents:**
35 35  
36 -* 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 +* 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 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 38  * [[Video Demo>>url:https://www.youtube.com/watch?v=TAFZ5eaf-MY&t=6s&ab_channel=XavierFlorensaBerenguer]]
39 39  
40 40  
42 +== 1.2 Example 2: Connect to Pulse Counter ==
41 41  
42 -== **1.2 Example 2: Connect to Pulse Counter** ==
43 43  
44 -
45 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:
46 46  
47 47  
48 -[[image:image-20220527092058-3.png]]
48 +[[image:image-20220527092058-3.png||height="552" width="905"]]
49 49  
50 -Connection
50 +**Connection**
51 51  
52 52  
53 53  
54 -[[image:image-20220527092146-4.png]]
54 +[[image:image-20220527092146-4.png||height="507" width="906"]]
55 55  
56 -Connection
56 +**Connection**
57 57  
58 58  
59 59  (% style="color:blue" %)**Related documents:**
60 60  
61 61  * 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"]]
62 +
62 62  * [[Dragino Solution in Farm>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/&file=Dragino%20on%20Farms.pptx]]
63 63  
64 64  
66 +== 1.3 Example 3: Use RS485-LN with energy meters ==
65 65  
66 -== **1.3 Example3: Use RS485-LN with energy meters** ==
68 +=== 1.3.1 OverView ===
67 67  
68 68  
69 -=== **1.3.1 OverView** ===
70 -
71 -
72 72  (((
73 73  (% style="color:red" %)**Note**：**The specifications of each energy meter are different, please refer to your own energy meter specifications.**
74 74  )))
... ... @@ -81,7 +81,7 @@
81 81  
82 82  [[image:image-20220527092419-5.png]]
83 83  
84 -Connection1
83 +**Connection1**
85 85  
86 86  
87 87  
... ... @@ -100,11 +100,11 @@
100 100  )))
101 101  
102 102  (((
103 -Power Source VIN to RS485-LN VIN+
102 +Power Source **VIN** to RS485-LN **VIN+**
104 104  )))
105 105  
106 106  (((
107 -Power Source GND to RS485-LN VIN-
106 +Power Source **GND** to RS485-LN **VIN-**
108 108  )))
109 109  
110 110  (((
... ... @@ -115,19 +115,18 @@
115 115  
116 116  [[image:image-20220527092514-6.png]]
117 117  
118 -Connection2
117 +**Connection2**
119 119  
120 120  
121 121  
122 122  [[image:image-20220527092555-7.png]]
123 123  
124 -Connection3
123 +**Connection3**
125 125  
126 126  
126 +=== 1.3.2 How to use the parameters of the energy meter and MODBUS commands ===
127 127  
128 -=== **1.3.2 How to use the parameters of the energy meter and MODBUS commands** ===
129 129  
130 -
131 131  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.
132 132  
133 133  [[image:image-20220601143257-10.png]]
... ... @@ -136,9 +136,13 @@
136 136  (% style="color:blue" %)**Example:**(%%)  AT+COMMAND1=01 03 00 00 00 01 84 0A
137 137  
138 138  * The first byte : slave address code (=001～247)
137 +
139 139  * The second byte : read register value function code
139 +
140 140  * 3rd and 4th bytes: start address of register to be read
141 +
141 141  * 5th and 6th bytes: Number of registers to read
143 +
142 142  * 7th and 8th bytes: CRC16 checksum from bytes 1 to 6.
143 143  
144 144  (((
... ... @@ -151,27 +151,24 @@
151 151  )))
152 152  
153 153  * The first byte ARD: slave address code (=001～254)
156 +
154 154  * The second byte: Return to read function code
158 +
155 155  * 3rd byte: total number of bytes
160 +
156 156  * 4th～5th bytes: register data
162 +
157 157  * The 6th and 7th bytes: CRC16 checksum
164 +
158 158  * 08 FD is register data. Use short integer 16 bits to convert to decimal, get 2301, then 230.1V is the voltage.
159 159  
160 -(% class="wikigeneratedid" %)
161 -(((
162 -
163 163  
168 +=== 1.3.3 How to configure RS485-LN and parse output commands ===
164 164  
165 -
166 -)))
167 167  
168 -=== **1.3.3 How to configure RS485-LN and parse output commands** ===
169 -
170 -
171 171  RS485-LN provides two configuration methods: AT COMMAND and DOWNLINK.
172 172  
173 173  
174 -
175 175  ==== **1.3.3.1 via AT COMMAND** ====
176 176  
177 177  
... ... @@ -185,7 +185,7 @@
185 185  
186 186  [[image:image-20220601143201-9.png]]
187 187  
188 -AT COMMAND
187 +**AT COMMAND**
189 189  
190 190  
191 191  (% class="box infomessage" %)
... ... @@ -201,16 +201,15 @@
201 201  
202 202  [[image:image-20220601143115-8.png]]
203 203  
204 -AT COMMAND
203 +**AT COMMAND**
205 205  
206 206  
207 207  
208 208  PAYLOAD is available after the valid value is intercepted.
209 209  
210 -
211 211  [[image:image-20220601143046-7.png]]
212 212  
213 -AT COMMAND
211 +**AT COMMAND**
214 214  
215 215  
216 216  
... ... @@ -219,19 +219,16 @@
219 219  [[image:image-20220601143519-1.png]]
220 220  
221 221  (((
222 -AT COMMAND
220 +**AT COMMAND**
223 223  )))
224 224  
225 225  (((
226 226  
227 -
228 -
229 229  )))
230 230  
231 231  (((
232 232  (% style="color:blue" %)**Example**:
233 233  
234 -
235 235  (% style="color:red" %)**CMD1:**(%%) Read current data with MODBUS command. address: 0x03 AT+COMMAND1= 01 03 00 03 00 01,1
236 236  )))
237 237  
... ... @@ -273,8 +273,6 @@
273 273  
274 274  (((
275 275  Payload: 01 00 02 39 85 08 DC 00 00 00 44
276 -
277 -
278 278  )))
279 279  
280 280  [[image:image-20220601142936-6.png]]
... ... @@ -298,13 +298,11 @@
298 298  [[image:image-20220527093358-15.png]]
299 299  
300 300  (((
301 -DOWNLINK
294 +**DOWNLINK**
302 302  )))
303 303  
304 -(((
305 -
306 -)))
307 307  
298 +
308 308  (((
309 309  (% style="color:blue" %)**Type Code 0xAF**
310 310  )))
... ... @@ -318,8 +318,6 @@
318 318  
319 319  (((
320 320  (% style="color:red" %)**Note: if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.**
321 -
322 -
323 323  )))
324 324  
325 325  (((
... ... @@ -354,9 +354,8 @@
354 354  will execute an uplink after got this command.
355 355  )))
356 356  
357 -(((
358 -
359 359  
347 +(((
360 360  (% style="color:blue" %)**Example:**
361 361  )))
362 362  
... ... @@ -366,35 +366,34 @@
366 366  
367 367  [[image:image-20220601144149-6.png]]
368 368  
369 -DOWNLINK
357 +**DOWNLINK**
370 370  
371 371  
372 372  
373 373  [[image:image-20220601143803-3.png]]
374 374  
375 -DOWNLINK
363 +**DOWNLINK**
376 376  
377 377  
378 378  
379 379  [[image:image-20220601144053-5.png]]
380 380  
381 -DOWNLINK
369 +**DOWNLINK**
382 382  
383 383  
384 384  
385 385  [[image:image-20220601143921-4.png]]
386 386  
387 -DOWNLINK
375 +**DOWNLINK**
388 388  
389 389  
390 390  
391 391  [[image:image-20220601142805-5.png]]
392 392  
393 -DOWNLINK
394 -
381 +**DOWNLINK**
395 395  
396 396  
397 -=== **1.3.4 How to configure and output commands for RS485 to USB** ===
384 +=== 1.3.4 How to configure and output commands for RS485 to USB ===
398 398  
399 399  
400 400  (((
... ... @@ -421,20 +421,18 @@
421 421  
422 422  [[image:image-20220527093708-21.png]]
423 423  
424 -USB
411 +**USB**
425 425  
426 426  
427 427  
428 428  [[image:image-20220527093747-22.png]]
429 429  
430 -USB
417 +**USB**
431 431  
432 432  
433 433  
434 434  (((
435 435  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.
436 -
437 -
438 438  )))
439 439  
440 440  (((
... ... @@ -449,11 +449,11 @@
449 449  
450 450  [[image:image-20220527093821-23.png]]
451 451  
452 -USB
437 +**USB**
453 453  
454 454  
455 455  
456 -=== **1.3.5 How to configure multiple devices and modify device addresses** ===
441 +=== 1.3.5 How to configure multiple devices and modify device addresses ===
457 457  
458 458  
459 459  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.
... ... @@ -502,9 +502,9 @@
502 502  **AT+CFGDEV:01 10 00 61 00 01 02 00 02,1**
503 503  )))
504 504  
505 -* 01:device adaress
490 +* 01: device adaress
506 506  
507 -* 10:function code
492 +* 10: function code
508 508  
509 509  * 00 61：Register address
510 510  
... ... @@ -533,9 +533,9 @@
533 533  * 08 DF is the valid value of the meter with device address 02.
534 534  * 43 62 is the valid value of the meter with device address 01.
535 535  
521 +(% style="display:none" %) (%%)
536 536  
537 537  
538 -
539 539  == 1.4 Example 4: Circuit Breaker Remote Open Close ==
540 540  
541 541  
... ... @@ -545,11 +545,12 @@
545 545  
546 546  [[image:image-20220527094330-30.png]]
547 547  
548 -Connection
533 +**Connection**
549 549  
550 550  
551 551  * 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"]]
552 552  
538 +
553 553  == 1.5 Example 5: SEM Three Energy Meter with RS485-BL or RS485-LN ==
554 554  
555 555  
... ... @@ -556,8 +556,10 @@
556 556  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:
557 557  
558 558  * 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);"]]
545 +
559 559  * 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"]]
560 560  
548 +
561 561  == 1.6 Example 6: CEM C31 485-T1-MID Energy Meter with RS485-LN ==
562 562  
563 563  
... ... @@ -565,12 +565,27 @@
565 565  
566 566  * 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);"]]
567 567  
556 +
568 568  == 1.7 Example 7: Schneider Electric PLC M221 with RS485-BL ==
569 569  
570 570  
571 571  [[image:image-20220527094556-31.png]]
572 572  
562 +
573 573  Network Structure
574 574  
575 -
576 576  * [[Reference Instruction>>url:https://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/Schneider%20Electric%20PLC/]]
566 +
567 +== ==
568 +
569 +== 1.8  Example 8: This sketch is supposed to test Dragino RS485-BL (Modbus master), using an Arduino UNO as a Modbus slave. ==
570 +
571 +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.
572 +
573 +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.
574 +
575 +This is released the code under GNU LGPL licence on Github:
576 +
577 +[[https:~~/~~/github.com/zorbaproject/ArduinoModbusForDraginoRS485>>url:https://github.com/zorbaproject/ArduinoModbusForDraginoRS485]]
578 +
579 +

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