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From version < 60.1 >
edited by Bei Jinggeng
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Author
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1 -XWiki.Bei
1 +XWiki.Xiaoling
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  [[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/||_mstmutation="1" style="background-color: rgb(255, 255, 255);"]]
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 +
35 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/||_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 38  
39 -== **1.2 Example 2: Connect to Pulse Counter** ==
40 40  
42 +== 1.2 Example 2: Connect to Pulse Counter ==
41 41  
44 +
42 42  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:
43 43  
44 44  
45 -[[image:image-20220527092058-3.png]]
48 +[[image:image-20220527092058-3.png||height="552" width="905"]]
46 46  
47 -Connection
50 +**Connection**
48 48  
49 49  
53 +[[image:image-20220527092146-4.png||height="507" width="906"]]
50 50  
51 -[[image:image-20220527092146-4.png]]
55 +**Connection**
52 52  
53 -Connection
54 54  
55 -
56 56  (% style="color:blue" %)**Related documents:**
57 57  
58 58  * 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 +
59 59  * [[Dragino Solution in Farm>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/&file=Dragino%20on%20Farms.pptx]]
60 60  
61 61  
62 -== **1.3 Example3: Use RS485-LN with energy meters** ==
63 63  
66 +== 1.3 Example 3: Use RS485-LN with energy meters ==
64 64  
65 -=== **1.3.1 OverView** ===
68 +=== 1.3.1 OverView ===
66 66  
67 67  
68 68  (((
69 -(% style="color:red" %)**Note**：The specifications of each energy meter are different, please refer to your own energy meter specifications.
72 +(% style="color:red" %)**Note**：**The specifications of each energy meter are different, please refer to your own energy meter specifications.**
70 70  )))
71 71  
72 72  (((
... ... @@ -75,10 +75,9 @@
75 75  
76 76  [[image:image-20220527092419-5.png]]
77 77  
78 -Connection1
81 +**Connection1**
79 79  
80 80  
81 -
82 82  (((
83 83  (% style="color:blue" %)**How to connect with Energy Meter：**
84 84  
... ... @@ -94,11 +94,11 @@
94 94  )))
95 95  
96 96  (((
97 -Power Source VIN to RS485-LN VIN+
99 +Power Source **VIN** to RS485-LN **VIN+**
98 98  )))
99 99  
100 100  (((
101 -Power Source GND to RS485-LN VIN-
103 +Power Source **GND** to RS485-LN **VIN-**
102 102  )))
103 103  
104 104  (((
... ... @@ -107,18 +107,17 @@
107 107  
108 108  [[image:image-20220527092514-6.png]]
109 109  
110 -Connection2
112 +**Connection2**
111 111  
112 112  
113 113  [[image:image-20220527092555-7.png]]
114 114  
115 -Connection3
117 +**Connection3**
116 116  
117 117  
120 +=== 1.3.2 How to use the parameters of the energy meter and MODBUS commands ===
118 118  
119 -=== **1.3.2 How to use the parameters of the energy meter and MODBUS commands** ===
120 120  
121 -
122 122  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.
123 123  
124 124  [[image:image-20220601143257-10.png]]
... ... @@ -127,9 +127,13 @@
127 127  (% style="color:blue" %)**Example:**(%%)  AT+COMMAND1=01 03 00 00 00 01 84 0A
128 128  
129 129  * The first byte : slave address code (=001～247)
131 +
130 130  * The second byte : read register value function code
133 +
131 131  * 3rd and 4th bytes: start address of register to be read
135 +
132 132  * 5th and 6th bytes: Number of registers to read
137 +
133 133  * 7th and 8th bytes: CRC16 checksum from bytes 1 to 6.
134 134  
135 135  (((
... ... @@ -142,27 +142,25 @@
142 142  )))
143 143  
144 144  * The first byte ARD: slave address code (=001～254)
150 +
145 145  * The second byte: Return to read function code
152 +
146 146  * 3rd byte: total number of bytes
154 +
147 147  * 4th～5th bytes: register data
156 +
148 148  * The 6th and 7th bytes: CRC16 checksum
158 +
149 149  * 08 FD is register data. Use short integer 16 bits to convert to decimal, get 2301, then 230.1V is the voltage.
150 150  
151 -(% class="wikigeneratedid" %)
152 -(((
153 -
154 154  
155 155  
156 -
157 -)))
163 +=== 1.3.3 How to configure RS485-LN and parse output commands ===
158 158  
159 -=== **1.3.3 How to configure RS485-LN and parse output commands** ===
160 160  
161 -
162 162  RS485-LN provides two configuration methods: AT COMMAND and DOWNLINK.
163 163  
164 164  
165 -
166 166  ==== **1.3.3.1 via AT COMMAND** ====
167 167  
168 168  
... ... @@ -170,11 +170,13 @@
170 170  
171 171  (((
172 172  If the configured parameters and commands are incorrect, the return value is not obtained.
176 +
177 +
173 173  )))
174 174  
175 175  [[image:image-20220601143201-9.png]]
176 176  
177 -AT COMMAND
182 +**AT COMMAND**
178 178  
179 179  
180 180  (% class="box infomessage" %)
... ... @@ -190,25 +190,22 @@
190 190  
191 191  [[image:image-20220601143115-8.png]]
192 192  
193 -AT COMMAND
198 +**AT COMMAND**
194 194  
195 195  
196 -
197 197  PAYLOAD is available after the valid value is intercepted.
198 198  
199 -
200 200  [[image:image-20220601143046-7.png]]
201 201  
202 -AT COMMAND
205 +**AT COMMAND**
203 203  
204 204  
205 -
206 206  You can get configured PAYLOAD on TTN.
207 207  
208 208  [[image:image-20220601143519-1.png]]
209 209  
210 210  (((
211 -AT COMMAND
213 +**AT COMMAND**
212 212  )))
213 213  
214 214  (((
... ... @@ -266,7 +266,7 @@
266 266  AT COMMAND
267 267  
268 268  
269 -(% 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.**
271 +(% 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.**
270 270  
271 271  
272 272  [[image:image-20220601143642-2.png]]
... ... @@ -274,7 +274,6 @@
274 274  AT COMMAND
275 275  
276 276  
277 -
278 278  ==== **1.3.3.2 via LoRaWAN DOWNLINK** ====
279 279  
280 280  
... ... @@ -281,15 +281,12 @@
281 281  [[image:image-20220527093358-15.png]]
282 282  
283 283  (((
284 -DOWNLINK
285 +**DOWNLINK**
285 285  )))
286 286  
287 -(((
288 -
289 -)))
290 290  
291 291  (((
292 -(% style="color:#4f81bd" %)**Type Code 0xAF**
290 +(% style="color:blue" %)**Type Code 0xAF**
293 293  )))
294 294  
295 295  (((
... ... @@ -335,9 +335,8 @@
335 335  will execute an uplink after got this command.
336 336  )))
337 337  
338 -(((
339 -
340 340  
337 +(((
341 341  (% style="color:blue" %)**Example:**
342 342  )))
343 343  
... ... @@ -347,36 +347,32 @@
347 347  
348 348  [[image:image-20220601144149-6.png]]
349 349  
350 -DOWNLINK
347 +**DOWNLINK**
351 351  
352 352  
353 -
354 354  [[image:image-20220601143803-3.png]]
355 355  
356 -DOWNLINK
352 +**DOWNLINK**
357 357  
358 358  
359 -
360 360  [[image:image-20220601144053-5.png]]
361 361  
362 -DOWNLINK
357 +**DOWNLINK**
363 363  
364 364  
365 -
366 366  [[image:image-20220601143921-4.png]]
367 367  
368 -DOWNLINK
362 +**DOWNLINK**
369 369  
370 370  
371 -
372 372  [[image:image-20220601142805-5.png]]
373 373  
374 -DOWNLINK
375 -
367 +**DOWNLINK**
376 376  
377 377  
378 -=== **1.3.4 How to configure and output commands for RS485 to USB** ===
370 +=== 1.3.4 How to configure and output commands for RS485 to USB ===
379 379  
372 +
380 380  (((
381 381  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.
382 382  )))
... ... @@ -395,26 +395,21 @@
395 395  
396 396  (((
397 397  check digit: Even
398 -
399 -
400 400  )))
401 401  
402 402  [[image:image-20220527093708-21.png]]
403 403  
404 -USB
395 +**USB**
405 405  
406 406  
407 -
408 408  [[image:image-20220527093747-22.png]]
409 409  
410 -USB
400 +**USB**
411 411  
412 412  
413 413  
414 414  (((
415 415  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.
416 -
417 -
418 418  )))
419 419  
420 420  (((
... ... @@ -429,13 +429,12 @@
429 429  
430 430  [[image:image-20220527093821-23.png]]
431 431  
432 -USB
420 +**USB**
433 433  
434 434  
423 +=== 1.3.5 How to configure multiple devices and modify device addresses ===
435 435  
436 -=== **1.3.5 How to configure multiple devices and modify device addresses** ===
437 437  
438 -
439 439  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.
440 440  
441 441  (((
... ... @@ -449,6 +449,7 @@
449 449  
450 450  (% style="color:blue" %)**Example**(%%): These two meters are examples of setting parameters and device addresses.
451 451  
439 +
452 452  [[image:image-20220527093950-25.png]]
453 453  
454 454  
... ... @@ -481,9 +481,9 @@
481 481  **AT+CFGDEV:01 10 00 61 00 01 02 00 02,1**
482 482  )))
483 483  
484 -* 01:device adaress
472 +* 01: device adaress
485 485  
486 -* 10:function code
474 +* 10: function code
487 487  
488 488  * 00 61：Register address
489 489  
... ... @@ -512,7 +512,9 @@
512 512  * 08 DF is the valid value of the meter with device address 02.
513 513  * 43 62 is the valid value of the meter with device address 01.
514 514  
503 +(% style="display:none" %) (%%)
515 515  
505 +
516 516  == 1.4 Example 4: Circuit Breaker Remote Open Close ==
517 517  
518 518  
... ... @@ -522,12 +522,13 @@
522 522  
523 523  [[image:image-20220527094330-30.png]]
524 524  
525 -Connection
515 +**Connection**
526 526  
527 527  
528 528  * 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"]]
529 529  
530 530  
521 +
531 531  == 1.5 Example 5: SEM Three Energy Meter with RS485-BL or RS485-LN ==
532 532  
533 533  
... ... @@ -534,9 +534,11 @@
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-BL to connect to SEM Three Energy Meter and send the data to mobile phone for remote minitor. The structure is like below:
535 535  
536 536  * 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);"]]
528 +
537 537  * 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"]]
538 538  
539 539  
532 +
540 540  == 1.6 Example 6: CEM C31 485-T1-MID Energy Meter with RS485-LN ==
541 541  
542 542  
... ... @@ -545,12 +545,28 @@
545 545  * 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);"]]
546 546  
547 547  
541 +
548 548  == 1.7 Example 7: Schneider Electric PLC M221 with RS485-BL ==
549 549  
550 550  
551 551  [[image:image-20220527094556-31.png]]
552 552  
547 +
553 553  Network Structure
554 554  
555 -
556 556  * [[Reference Instruction>>url:https://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/Schneider%20Electric%20PLC/]]
551 +
552 +
553 +
554 +== 1.8 Example 8: This sketch is supposed to test Dragino RS485-BL (Modbus master), using an Arduino UNO as a Modbus slave. ==
555 +
556 +
557 +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.
558 +
559 +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.
560 +
561 +This is released the code under GNU LGPL licence on Github:
562 +
563 +[[https:~~/~~/github.com/zorbaproject/ArduinoModbusForDraginoRS485>>url:https://github.com/zorbaproject/ArduinoModbusForDraginoRS485]]
564 +
565 +

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