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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 +== 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 27  [[image:image-20220527091942-2.png]](% style="display:none" %)
28 28  
29 -Connection
30 +**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);"]]
36 -* [[Video Demo>>url:https://www.youtube.com/watch?v=TAFZ5eaf-MY&t=6s&ab_channel=XavierFlorensaBerenguer]]
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);"]]
37 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  
39 -== **1.2 Example 2: Connect to Pulse Counter** ==
39 +* [[Video Demo>>url:https://www.youtube.com/watch?v=TAFZ5eaf-MY&t=6s&ab_channel=XavierFlorensaBerenguer]]
40 40  
41 +== 1.2 Example 2: Connect to Pulse Counter ==
41 41  
43 +
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]]
47 +[[image:image-20220527092058-3.png||height="552" width="905"]]
46 46  
47 -Connection
49 +**Connection**
48 48  
49 49  
50 50  
51 -[[image:image-20220527092146-4.png]]
53 +[[image:image-20220527092146-4.png||height="507" width="906"]]
52 52  
53 -Connection
55 +**Connection**
54 54  
55 55  
56 56  (% style="color:blue" %)**Related documents:**
57 57  
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/]]
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 +
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  
64 +== 1.3 Example 3: Use RS485-LN with energy meters ==
61 61  
62 -== **1.3 Example3: Use RS485-LN with energy meters** ==
66 +=== 1.3.1 OverView ===
63 63  
64 64  
65 -=== **1.3.1 OverView** ===
66 -
67 -
68 68  (((
69 -(% 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.**
70 70  )))
71 71  
72 72  (((
73 73  This example describes a single-phase meter.This is the connection between the RS485-LN and the energy meter.
75 +
76 +
74 74  )))
75 75  
76 76  [[image:image-20220527092419-5.png]]
77 77  
78 -Connection1
81 +**Connection1**
79 79  
80 80  
81 81  
... ... @@ -94,31 +94,33 @@
94 94  )))
95 95  
96 96  (((
97 -Power Source VIN to RS485-LN VIN+
100 +Power Source **VIN** to RS485-LN **VIN+**
98 98  )))
99 99  
100 100  (((
101 -Power Source GND to RS485-LN VIN-
104 +Power Source **GND** to RS485-LN **VIN-**
102 102  )))
103 103  
104 104  (((
105 105  Once there is power, the RS485-LN will be on.
109 +
110 +
106 106  )))
107 107  
108 108  [[image:image-20220527092514-6.png]]
109 109  
110 -Connection2
115 +**Connection2**
111 111  
112 112  
118 +
113 113  [[image:image-20220527092555-7.png]]
114 114  
115 -Connection3
121 +**Connection3**
116 116  
117 117  
124 +=== 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)
135 +
130 130  * The second byte : read register value function code
137 +
131 131  * 3rd and 4th bytes: start address of register to be read
139 +
132 132  * 5th and 6th bytes: Number of registers to read
141 +
133 133  * 7th and 8th bytes: CRC16 checksum from bytes 1 to 6.
134 134  
135 135  (((
... ... @@ -142,27 +142,23 @@
142 142  )))
143 143  
144 144  * The first byte ARD: slave address code (=001～254)
154 +
145 145  * The second byte: Return to read function code
156 +
146 146  * 3rd byte: total number of bytes
158 +
147 147  * 4th～5th bytes: register data
160 +
148 148  * The 6th and 7th bytes: CRC16 checksum
162 +
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 -
165 +=== 1.3.3 How to configure RS485-LN and parse output commands ===
154 154  
155 155  
156 -
157 -)))
158 -
159 -=== **1.3.3 How to configure RS485-LN and parse output commands** ===
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  
... ... @@ -170,16 +170,18 @@
170 170  
171 171  (((
172 172  If the configured parameters and commands are incorrect, the return value is not obtained.
178 +
179 +
173 173  )))
174 174  
175 175  [[image:image-20220601143201-9.png]]
176 176  
177 -AT COMMAND
184 +**AT COMMAND**
178 178  
179 179  
180 180  (% class="box infomessage" %)
181 181  (((
182 - **AT+DATACUTx **:  This command defines how to handle the return from AT+COMMANDx, max reture length is 40 bytes. AT+DATACUTx=a,b,c
189 + (% _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
183 183  )))
184 184  
185 185  a:  length for the return of AT+COMMAND
... ... @@ -190,16 +190,15 @@
190 190  
191 191  [[image:image-20220601143115-8.png]]
192 192  
193 -AT COMMAND
200 +**AT COMMAND**
194 194  
195 195  
196 196  
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
208 +**AT COMMAND**
203 203  
204 204  
205 205  
... ... @@ -208,7 +208,7 @@
208 208  [[image:image-20220601143519-1.png]]
209 209  
210 210  (((
211 -AT COMMAND
217 +**AT COMMAND**
212 212  )))
213 213  
214 214  (((
... ... @@ -266,9 +266,10 @@
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.**
270 270  
276 +(% 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.**
271 271  
278 +
272 272  [[image:image-20220601143642-2.png]]
273 273  
274 274  AT COMMAND
... ... @@ -281,15 +281,13 @@
281 281  [[image:image-20220527093358-15.png]]
282 282  
283 283  (((
284 -DOWNLINK
291 +**DOWNLINK**
285 285  )))
286 286  
287 -(((
288 -
289 -)))
290 290  
295 +
291 291  (((
292 -(% style="color:#4f81bd" %)**Type Code 0xAF**
297 +(% 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  
344 +(((
341 341  (% style="color:blue" %)**Example:**
342 342  )))
343 343  
... ... @@ -347,36 +347,36 @@
347 347  
348 348  [[image:image-20220601144149-6.png]]
349 349  
350 -DOWNLINK
354 +**DOWNLINK**
351 351  
352 352  
353 353  
354 354  [[image:image-20220601143803-3.png]]
355 355  
356 -DOWNLINK
360 +**DOWNLINK**
357 357  
358 358  
359 359  
360 360  [[image:image-20220601144053-5.png]]
361 361  
362 -DOWNLINK
366 +**DOWNLINK**
363 363  
364 364  
365 365  
366 366  [[image:image-20220601143921-4.png]]
367 367  
368 -DOWNLINK
372 +**DOWNLINK**
369 369  
370 370  
371 371  
372 372  [[image:image-20220601142805-5.png]]
373 373  
374 -DOWNLINK
375 -
378 +**DOWNLINK**
376 376  
377 377  
378 -=== **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 ===
379 379  
383 +
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  )))
... ... @@ -401,20 +401,18 @@
401 401  
402 402  [[image:image-20220527093708-21.png]]
403 403  
404 -USB
408 +**USB**
405 405  
406 406  
407 407  
408 408  [[image:image-20220527093747-22.png]]
409 409  
410 -USB
414 +**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  (((
... ... @@ -429,11 +429,11 @@
429 429  
430 430  [[image:image-20220527093821-23.png]]
431 431  
432 -USB
434 +**USB**
433 433  
434 434  
435 435  
436 -=== **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 ===
437 437  
438 438  
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.
... ... @@ -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  
454 +
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
487 +* 01: device adaress
485 485  
486 -* 10:function code
489 +* 10: function code
487 487  
488 488  * 00 61：Register address
489 489  
... ... @@ -512,6 +512,7 @@
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  
518 +(% style="display:none" %) (%%)
515 515  
516 516  
517 517  == 1.4 Example 4: Circuit Breaker Remote Open Close ==
... ... @@ -523,38 +523,45 @@
523 523  
524 524  [[image:image-20220527094330-30.png]]
525 525  
526 -Connection
530 +**Connection**
527 527  
528 528  
529 -* 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/]]
533 +* 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"]]
530 530  
531 -
532 -
533 533  == 1.5 Example 5: SEM Three Energy Meter with RS485-BL or RS485-LN ==
534 534  
535 535  
536 536  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:
537 537  
538 -* 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);"]]
539 -* 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]]
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||_mstmutation="1" style="background-color: rgb(255, 255, 255);"]]
540 540  
542 +* 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"]]
541 541  
542 -
543 543  == 1.6 Example 6: CEM C31 485-T1-MID Energy Meter with RS485-LN ==
544 544  
545 545  
546 546  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:
547 547  
548 -* 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);"]]
549 +* 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);"]]
549 549  
550 -
551 -
552 552  == 1.7 Example 7: Schneider Electric PLC M221 with RS485-BL ==
553 553  
554 554  
555 555  [[image:image-20220527094556-31.png]]
556 556  
556 +
557 557  Network Structure
558 558  
559 -
560 560  * [[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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