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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 23  [[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  
41 +== 1.2 Example 2: Connect to Pulse Counter ==
40 40  
41 41  
42 -== **1.2 Example 2: Connect to Pulse Counter** ==
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 48  [[image:image-20220527092058-3.png||height="552" width="905"]]
49 49  
50 -Connection
49 +**Connection**
51 51  
52 52  
53 53  
54 54  [[image:image-20220527092146-4.png||height="507" width="906"]]
55 55  
56 -Connection
55 +**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"]]
61 +
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 -== **1.3 Example 3: Use RS485-LN with energy meters** ==
64 +== 1.3 Example 3: Use RS485-LN with energy meters ==
65 65  
66 +=== 1.3.1 OverView ===
66 66  
67 -=== **1.3.1 OverView** ===
68 68  
69 -
70 70  (((
71 71  (% style="color:red" %)**Note**：**The specifications of each energy meter are different, please refer to your own energy meter specifications.**
72 72  )))
... ... @@ -79,7 +79,7 @@
79 79  
80 80  [[image:image-20220527092419-5.png]]
81 81  
82 -Connection1
81 +**Connection1**
83 83  
84 84  
85 85  
... ... @@ -98,11 +98,11 @@
98 98  )))
99 99  
100 100  (((
101 -Power Source VIN to RS485-LN VIN+
100 +Power Source **VIN** to RS485-LN **VIN+**
102 102  )))
103 103  
104 104  (((
105 -Power Source GND to RS485-LN VIN-
104 +Power Source **GND** to RS485-LN **VIN-**
106 106  )))
107 107  
108 108  (((
... ... @@ -113,19 +113,18 @@
113 113  
114 114  [[image:image-20220527092514-6.png]]
115 115  
116 -Connection2
115 +**Connection2**
117 117  
118 118  
119 119  
120 120  [[image:image-20220527092555-7.png]]
121 121  
122 -Connection3
121 +**Connection3**
123 123  
124 124  
124 +=== 1.3.2 How to use the parameters of the energy meter and MODBUS commands ===
125 125  
126 -=== **1.3.2 How to use the parameters of the energy meter and MODBUS commands** ===
127 127  
128 -
129 129  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.
130 130  
131 131  [[image:image-20220601143257-10.png]]
... ... @@ -134,9 +134,13 @@
134 134  (% style="color:blue" %)**Example:**(%%)  AT+COMMAND1=01 03 00 00 00 01 84 0A
135 135  
136 136  * The first byte : slave address code (=001～247)
135 +
137 137  * The second byte : read register value function code
137 +
138 138  * 3rd and 4th bytes: start address of register to be read
139 +
139 139  * 5th and 6th bytes: Number of registers to read
141 +
140 140  * 7th and 8th bytes: CRC16 checksum from bytes 1 to 6.
141 141  
142 142  (((
... ... @@ -149,27 +149,23 @@
149 149  )))
150 150  
151 151  * The first byte ARD: slave address code (=001～254)
154 +
152 152  * The second byte: Return to read function code
156 +
153 153  * 3rd byte: total number of bytes
158 +
154 154  * 4th～5th bytes: register data
160 +
155 155  * The 6th and 7th bytes: CRC16 checksum
162 +
156 156  * 08 FD is register data. Use short integer 16 bits to convert to decimal, get 2301, then 230.1V is the voltage.
157 157  
158 -(% class="wikigeneratedid" %)
159 -(((
160 -
165 +=== 1.3.3 How to configure RS485-LN and parse output commands ===
161 161  
162 162  
163 -
164 -)))
165 -
166 -=== **1.3.3 How to configure RS485-LN and parse output commands** ===
167 -
168 -
169 169  RS485-LN provides two configuration methods: AT COMMAND and DOWNLINK.
170 170  
171 171  
172 -
173 173  ==== **1.3.3.1 via AT COMMAND** ====
174 174  
175 175  
... ... @@ -183,7 +183,7 @@
183 183  
184 184  [[image:image-20220601143201-9.png]]
185 185  
186 -AT COMMAND
184 +**AT COMMAND**
187 187  
188 188  
189 189  (% class="box infomessage" %)
... ... @@ -199,16 +199,15 @@
199 199  
200 200  [[image:image-20220601143115-8.png]]
201 201  
202 -AT COMMAND
200 +**AT COMMAND**
203 203  
204 204  
205 205  
206 206  PAYLOAD is available after the valid value is intercepted.
207 207  
208 -
209 209  [[image:image-20220601143046-7.png]]
210 210  
211 -AT COMMAND
208 +**AT COMMAND**
212 212  
213 213  
214 214  
... ... @@ -217,19 +217,16 @@
217 217  [[image:image-20220601143519-1.png]]
218 218  
219 219  (((
220 -AT COMMAND
217 +**AT COMMAND**
221 221  )))
222 222  
223 223  (((
224 224  
225 -
226 -
227 227  )))
228 228  
229 229  (((
230 230  (% style="color:blue" %)**Example**:
231 231  
232 -
233 233  (% style="color:red" %)**CMD1:**(%%) Read current data with MODBUS command. address: 0x03 AT+COMMAND1= 01 03 00 03 00 01,1
234 234  )))
235 235  
... ... @@ -271,8 +271,6 @@
271 271  
272 272  (((
273 273  Payload: 01 00 02 39 85 08 DC 00 00 00 44
274 -
275 -
276 276  )))
277 277  
278 278  [[image:image-20220601142936-6.png]]
... ... @@ -296,13 +296,11 @@
296 296  [[image:image-20220527093358-15.png]]
297 297  
298 298  (((
299 -DOWNLINK
291 +**DOWNLINK**
300 300  )))
301 301  
302 -(((
303 -
304 -)))
305 305  
295 +
306 306  (((
307 307  (% style="color:blue" %)**Type Code 0xAF**
308 308  )))
... ... @@ -316,8 +316,6 @@
316 316  
317 317  (((
318 318  (% style="color:red" %)**Note: if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.**
319 -
320 -
321 321  )))
322 322  
323 323  (((
... ... @@ -352,9 +352,8 @@
352 352  will execute an uplink after got this command.
353 353  )))
354 354  
355 -(((
356 -
357 357  
344 +(((
358 358  (% style="color:blue" %)**Example:**
359 359  )))
360 360  
... ... @@ -364,35 +364,34 @@
364 364  
365 365  [[image:image-20220601144149-6.png]]
366 366  
367 -DOWNLINK
354 +**DOWNLINK**
368 368  
369 369  
370 370  
371 371  [[image:image-20220601143803-3.png]]
372 372  
373 -DOWNLINK
360 +**DOWNLINK**
374 374  
375 375  
376 376  
377 377  [[image:image-20220601144053-5.png]]
378 378  
379 -DOWNLINK
366 +**DOWNLINK**
380 380  
381 381  
382 382  
383 383  [[image:image-20220601143921-4.png]]
384 384  
385 -DOWNLINK
372 +**DOWNLINK**
386 386  
387 387  
388 388  
389 389  [[image:image-20220601142805-5.png]]
390 390  
391 -DOWNLINK
392 -
378 +**DOWNLINK**
393 393  
394 394  
395 -=== **1.3.4 How to configure and output commands for RS485 to USB** ===
381 +=== 1.3.4 How to configure and output commands for RS485 to USB ===
396 396  
397 397  
398 398  (((
... ... @@ -419,20 +419,18 @@
419 419  
420 420  [[image:image-20220527093708-21.png]]
421 421  
422 -USB
408 +**USB**
423 423  
424 424  
425 425  
426 426  [[image:image-20220527093747-22.png]]
427 427  
428 -USB
414 +**USB**
429 429  
430 430  
431 431  
432 432  (((
433 433  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.
434 -
435 -
436 436  )))
437 437  
438 438  (((
... ... @@ -447,11 +447,11 @@
447 447  
448 448  [[image:image-20220527093821-23.png]]
449 449  
450 -USB
434 +**USB**
451 451  
452 452  
453 453  
454 -=== **1.3.5 How to configure multiple devices and modify device addresses** ===
438 +=== 1.3.5 How to configure multiple devices and modify device addresses ===
455 455  
456 456  
457 457  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.
... ... @@ -500,9 +500,9 @@
500 500  **AT+CFGDEV:01 10 00 61 00 01 02 00 02,1**
501 501  )))
502 502  
503 -* 01:device adaress
487 +* 01: device adaress
504 504  
505 -* 10:function code
489 +* 10: function code
506 506  
507 507  * 00 61：Register address
508 508  
... ... @@ -533,7 +533,6 @@
533 533  
534 534  (% style="display:none" %) (%%)
535 535  
536 -(% style="display:none" %) (%%)
537 537  
538 538  == 1.4 Example 4: Circuit Breaker Remote Open Close ==
539 539  
... ... @@ -544,12 +544,11 @@
544 544  
545 545  [[image:image-20220527094330-30.png]]
546 546  
547 -Connection
530 +**Connection**
548 548  
549 549  
550 550  * 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"]]
551 551  
552 -
553 553  == 1.5 Example 5: SEM Three Energy Meter with RS485-BL or RS485-LN ==
554 554  
555 555  
... ... @@ -556,10 +556,9 @@
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);"]]
541 +
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  
561 -
562 -
563 563  == 1.6 Example 6: CEM C31 485-T1-MID Energy Meter with RS485-LN ==
564 564  
565 565  
... ... @@ -567,14 +567,24 @@
567 567  
568 568  * 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);"]]
569 569  
570 -
571 -
572 572  == 1.7 Example 7: Schneider Electric PLC M221 with RS485-BL ==
573 573  
574 574  
575 575  [[image:image-20220527094556-31.png]]
576 576  
556 +
577 577  Network Structure
578 578  
579 -
580 580  * [[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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