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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/||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);"]]
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 38  
39 39  
40 -== **1.2 Example 2: Connect to Pulse Counter** ==
42 +== 1.2 Example 2: Connect to Pulse Counter ==
41 41  
42 42  
43 43  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:
44 44  
45 45  
46 -[[image:image-20220527092058-3.png]]
48 +[[image:image-20220527092058-3.png||height="552" width="905"]]
47 47  
48 -Connection
50 +**Connection**
49 49  
50 50  
53 +[[image:image-20220527092146-4.png||height="507" width="906"]]
51 51  
52 -[[image:image-20220527092146-4.png]]
55 +**Connection**
53 53  
54 -Connection
55 55  
56 -
57 57  (% style="color:blue" %)**Related documents:**
58 58  
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/]]
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 +
60 60  * [[Dragino Solution in Farm>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/&file=Dragino%20on%20Farms.pptx]]
61 61  
62 62  
63 63  
64 -== **1.3 Example3: Use RS485-LN with energy meters** ==
66 +== 1.3 Example 3: Use RS485-LN with energy meters ==
65 65  
68 +=== 1.3.1 OverView ===
66 66  
67 -=== **1.3.1 OverView** ===
68 68  
69 -
70 70  (((
71 -(% 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.**
72 72  )))
73 73  
74 74  (((
... ... @@ -77,10 +77,9 @@
77 77  
78 78  [[image:image-20220527092419-5.png]]
79 79  
80 -Connection1
81 +**Connection1**
81 81  
82 82  
83 -
84 84  (((
85 85  (% style="color:blue" %)**How to connect with Energy Meter：**
86 86  
... ... @@ -96,11 +96,11 @@
96 96  )))
97 97  
98 98  (((
99 -Power Source VIN to RS485-LN VIN+
99 +Power Source **VIN** to RS485-LN **VIN+**
100 100  )))
101 101  
102 102  (((
103 -Power Source GND to RS485-LN VIN-
103 +Power Source **GND** to RS485-LN **VIN-**
104 104  )))
105 105  
106 106  (((
... ... @@ -109,18 +109,17 @@
109 109  
110 110  [[image:image-20220527092514-6.png]]
111 111  
112 -Connection2
112 +**Connection2**
113 113  
114 114  
115 115  [[image:image-20220527092555-7.png]]
116 116  
117 -Connection3
117 +**Connection3**
118 118  
119 119  
120 +=== 1.3.2 How to use the parameters of the energy meter and MODBUS commands ===
120 120  
121 -=== **1.3.2 How to use the parameters of the energy meter and MODBUS commands** ===
122 122  
123 -
124 124  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.
125 125  
126 126  [[image:image-20220601143257-10.png]]
... ... @@ -129,9 +129,13 @@
129 129  (% style="color:blue" %)**Example:**(%%)  AT+COMMAND1=01 03 00 00 00 01 84 0A
130 130  
131 131  * The first byte : slave address code (=001～247)
131 +
132 132  * The second byte : read register value function code
133 +
133 133  * 3rd and 4th bytes: start address of register to be read
135 +
134 134  * 5th and 6th bytes: Number of registers to read
137 +
135 135  * 7th and 8th bytes: CRC16 checksum from bytes 1 to 6.
136 136  
137 137  (((
... ... @@ -144,27 +144,25 @@
144 144  )))
145 145  
146 146  * The first byte ARD: slave address code (=001～254)
150 +
147 147  * The second byte: Return to read function code
152 +
148 148  * 3rd byte: total number of bytes
154 +
149 149  * 4th～5th bytes: register data
156 +
150 150  * The 6th and 7th bytes: CRC16 checksum
158 +
151 151  * 08 FD is register data. Use short integer 16 bits to convert to decimal, get 2301, then 230.1V is the voltage.
152 152  
153 -(% class="wikigeneratedid" %)
154 -(((
155 -
156 156  
157 157  
158 -
159 -)))
163 +=== 1.3.3 How to configure RS485-LN and parse output commands ===
160 160  
161 -=== **1.3.3 How to configure RS485-LN and parse output commands** ===
162 162  
163 -
164 164  RS485-LN provides two configuration methods: AT COMMAND and DOWNLINK.
165 165  
166 166  
167 -
168 168  ==== **1.3.3.1 via AT COMMAND** ====
169 169  
170 170  
... ... @@ -172,16 +172,18 @@
172 172  
173 173  (((
174 174  If the configured parameters and commands are incorrect, the return value is not obtained.
176 +
177 +
175 175  )))
176 176  
177 177  [[image:image-20220601143201-9.png]]
178 178  
179 -AT COMMAND
182 +**AT COMMAND**
180 180  
181 181  
182 182  (% class="box infomessage" %)
183 183  (((
184 - **AT+DATACUTx **:  This command defines how to handle the return from AT+COMMANDx, max reture length is 40 bytes. AT+DATACUTx=a,b,c
187 + (% _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
185 185  )))
186 186  
187 187  a:  length for the return of AT+COMMAND
... ... @@ -192,25 +192,22 @@
192 192  
193 193  [[image:image-20220601143115-8.png]]
194 194  
195 -AT COMMAND
198 +**AT COMMAND**
196 196  
197 197  
198 -
199 199  PAYLOAD is available after the valid value is intercepted.
200 200  
201 -
202 202  [[image:image-20220601143046-7.png]]
203 203  
204 -AT COMMAND
205 +**AT COMMAND**
205 205  
206 206  
207 -
208 208  You can get configured PAYLOAD on TTN.
209 209  
210 210  [[image:image-20220601143519-1.png]]
211 211  
212 212  (((
213 -AT COMMAND
213 +**AT COMMAND**
214 214  )))
215 215  
216 216  (((
... ... @@ -268,7 +268,7 @@
268 268  AT COMMAND
269 269  
270 270  
271 -(% 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.**
272 272  
273 273  
274 274  [[image:image-20220601143642-2.png]]
... ... @@ -276,7 +276,6 @@
276 276  AT COMMAND
277 277  
278 278  
279 -
280 280  ==== **1.3.3.2 via LoRaWAN DOWNLINK** ====
281 281  
282 282  
... ... @@ -283,15 +283,12 @@
283 283  [[image:image-20220527093358-15.png]]
284 284  
285 285  (((
286 -DOWNLINK
285 +**DOWNLINK**
287 287  )))
288 288  
289 -(((
290 -
291 -)))
292 292  
293 293  (((
294 -(% style="color:#4f81bd" %)**Type Code 0xAF**
290 +(% style="color:blue" %)**Type Code 0xAF**
295 295  )))
296 296  
297 297  (((
... ... @@ -337,9 +337,8 @@
337 337  will execute an uplink after got this command.
338 338  )))
339 339  
340 -(((
341 -
342 342  
337 +(((
343 343  (% style="color:blue" %)**Example:**
344 344  )))
345 345  
... ... @@ -349,36 +349,32 @@
349 349  
350 350  [[image:image-20220601144149-6.png]]
351 351  
352 -DOWNLINK
347 +**DOWNLINK**
353 353  
354 354  
355 -
356 356  [[image:image-20220601143803-3.png]]
357 357  
358 -DOWNLINK
352 +**DOWNLINK**
359 359  
360 360  
361 -
362 362  [[image:image-20220601144053-5.png]]
363 363  
364 -DOWNLINK
357 +**DOWNLINK**
365 365  
366 366  
367 -
368 368  [[image:image-20220601143921-4.png]]
369 369  
370 -DOWNLINK
362 +**DOWNLINK**
371 371  
372 372  
373 -
374 374  [[image:image-20220601142805-5.png]]
375 375  
376 -DOWNLINK
377 -
367 +**DOWNLINK**
378 378  
379 379  
380 -=== **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 ===
381 381  
372 +
382 382  (((
383 383  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.
384 384  )))
... ... @@ -397,26 +397,21 @@
397 397  
398 398  (((
399 399  check digit: Even
400 -
401 -
402 402  )))
403 403  
404 404  [[image:image-20220527093708-21.png]]
405 405  
406 -USB
395 +**USB**
407 407  
408 408  
409 -
410 410  [[image:image-20220527093747-22.png]]
411 411  
412 -USB
400 +**USB**
413 413  
414 414  
415 415  
416 416  (((
417 417  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.
418 -
419 -
420 420  )))
421 421  
422 422  (((
... ... @@ -431,13 +431,12 @@
431 431  
432 432  [[image:image-20220527093821-23.png]]
433 433  
434 -USB
420 +**USB**
435 435  
436 436  
423 +=== 1.3.5 How to configure multiple devices and modify device addresses ===
437 437  
438 -=== **1.3.5 How to configure multiple devices and modify device addresses** ===
439 439  
440 -
441 441  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.
442 442  
443 443  (((
... ... @@ -451,6 +451,7 @@
451 451  
452 452  (% style="color:blue" %)**Example**(%%): These two meters are examples of setting parameters and device addresses.
453 453  
439 +
454 454  [[image:image-20220527093950-25.png]]
455 455  
456 456  
... ... @@ -483,9 +483,9 @@
483 483  **AT+CFGDEV:01 10 00 61 00 01 02 00 02,1**
484 484  )))
485 485  
486 -* 01:device adaress
472 +* 01: device adaress
487 487  
488 -* 10:function code
474 +* 10: function code
489 489  
490 490  * 00 61：Register address
491 491  
... ... @@ -514,6 +514,7 @@
514 514  * 08 DF is the valid value of the meter with device address 02.
515 515  * 43 62 is the valid value of the meter with device address 01.
516 516  
503 +(% style="display:none" %) (%%)
517 517  
518 518  
519 519  == 1.4 Example 4: Circuit Breaker Remote Open Close ==
... ... @@ -525,10 +525,10 @@
525 525  
526 526  [[image:image-20220527094330-30.png]]
527 527  
528 -Connection
515 +**Connection**
529 529  
530 530  
531 -* 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/]]
518 +* 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"]]
532 532  
533 533  
534 534  
... ... @@ -537,17 +537,18 @@
537 537  
538 538  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:
539 539  
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||style="background-color: rgb(255, 255, 255);"]]
541 -* 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]]
527 +* 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);"]]
542 542  
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||_mstmutation="1"]]
543 543  
544 544  
532 +
545 545  == 1.6 Example 6: CEM C31 485-T1-MID Energy Meter with RS485-LN ==
546 546  
547 547  
548 548  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:
549 549  
550 -* 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);"]]
538 +* 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);"]]
551 551  
552 552  
553 553  
... ... @@ -556,7 +556,22 @@
556 556  
557 557  [[image:image-20220527094556-31.png]]
558 558  
547 +
559 559  Network Structure
560 560  
561 -
562 562  * [[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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