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Author
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1 -XWiki.Xiaoling
1 +XWiki.karry
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 -== **1.2 Example 2: Connect to Pulse Counter** ==
39 39  
41 +== 1.2 Example 2: Connect to Pulse Counter ==
40 40  
43 +
41 41  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:
42 42  
43 43  
44 -[[image:image-20220527092058-3.png]]
47 +[[image:image-20220527092058-3.png||height="552" width="905"]]
45 45  
46 -Connection
49 +**Connection**
47 47  
48 48  
52 +[[image:image-20220527092146-4.png||height="507" width="906"]]
49 49  
50 -[[image:image-20220527092146-4.png]]
54 +**Connection**
51 51  
52 -Connection
53 53  
54 -
55 55  (% style="color:blue" %)**Related documents:**
56 56  
57 -* 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/]]
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/||_mstmutation="1"]]
60 +
58 58  * [[Dragino Solution in Farm>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/&file=Dragino%20on%20Farms.pptx]]
59 59  
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  (((
... ... @@ -75,10 +75,9 @@
75 75  
76 76  [[image:image-20220527092419-5.png]]
77 77  
78 -Connection1
79 +**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+
97 +Power Source **VIN** to RS485-LN **VIN+**
98 98  )))
99 99  
100 100  (((
101 -Power Source GND to RS485-LN VIN-
101 +Power Source **GND** to RS485-LN **VIN-**
102 102  )))
103 103  
104 104  (((
... ... @@ -107,15 +107,15 @@
107 107  
108 108  [[image:image-20220527092514-6.png]]
109 109  
110 -Connection2
110 +**Connection2**
111 111  
112 112  
113 113  [[image:image-20220527092555-7.png]]
114 114  
115 -Connection3
115 +**Connection3**
116 116  
117 117  
118 -=== **1.3.2 How to use the parameters of the energy meter and MODBUS commands** ===
118 +=== 1.3.2 How to use the parameters of the energy meter and MODBUS commands ===
119 119  
120 120  
121 121  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.
... ... @@ -126,9 +126,13 @@
126 126  (% style="color:blue" %)**Example:**(%%)  AT+COMMAND1=01 03 00 00 00 01 84 0A
127 127  
128 128  * The first byte : slave address code (=001～247)
129 +
129 129  * The second byte : read register value function code
131 +
130 130  * 3rd and 4th bytes: start address of register to be read
133 +
131 131  * 5th and 6th bytes: Number of registers to read
135 +
132 132  * 7th and 8th bytes: CRC16 checksum from bytes 1 to 6.
133 133  
134 134  (((
... ... @@ -141,23 +141,21 @@
141 141  )))
142 142  
143 143  * The first byte ARD: slave address code (=001～254)
148 +
144 144  * The second byte: Return to read function code
150 +
145 145  * 3rd byte: total number of bytes
152 +
146 146  * 4th～5th bytes: register data
154 +
147 147  * The 6th and 7th bytes: CRC16 checksum
156 +
148 148  * 08 FD is register data. Use short integer 16 bits to convert to decimal, get 2301, then 230.1V is the voltage.
149 149  
150 -(% class="wikigeneratedid" %)
151 -(((
152 -
153 153  
160 +=== 1.3.3 How to configure RS485-LN and parse output commands ===
154 154  
155 -
156 -)))
157 157  
158 -=== **1.3.3 How to configure RS485-LN and parse output commands** ===
159 -
160 -
161 161  RS485-LN provides two configuration methods: AT COMMAND and DOWNLINK.
162 162  
163 163  
... ... @@ -168,16 +168,18 @@
168 168  
169 169  (((
170 170  If the configured parameters and commands are incorrect, the return value is not obtained.
173 +
174 +
171 171  )))
172 172  
173 173  [[image:image-20220601143201-9.png]]
174 174  
175 -AT COMMAND
179 +**AT COMMAND**
176 176  
177 177  
178 178  (% class="box infomessage" %)
179 179  (((
180 - **AT+DATACUTx **:  This command defines how to handle the return from AT+COMMANDx, max reture length is 40 bytes. AT+DATACUTx=a,b,c
184 + (% _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
181 181  )))
182 182  
183 183  a:  length for the return of AT+COMMAND
... ... @@ -188,25 +188,22 @@
188 188  
189 189  [[image:image-20220601143115-8.png]]
190 190  
191 -AT COMMAND
195 +**AT COMMAND**
192 192  
193 193  
194 -
195 195  PAYLOAD is available after the valid value is intercepted.
196 196  
197 -
198 198  [[image:image-20220601143046-7.png]]
199 199  
200 -AT COMMAND
202 +**AT COMMAND**
201 201  
202 202  
203 -
204 204  You can get configured PAYLOAD on TTN.
205 205  
206 206  [[image:image-20220601143519-1.png]]
207 207  
208 208  (((
209 -AT COMMAND
210 +**AT COMMAND**
210 210  )))
211 211  
212 212  (((
... ... @@ -264,7 +264,7 @@
264 264  AT COMMAND
265 265  
266 266  
267 -(% 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.**
268 +(% 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.**
268 268  
269 269  
270 270  [[image:image-20220601143642-2.png]]
... ... @@ -278,15 +278,12 @@
278 278  [[image:image-20220527093358-15.png]]
279 279  
280 280  (((
281 -DOWNLINK
282 +**DOWNLINK**
282 282  )))
283 283  
284 -(((
285 -
286 -)))
287 287  
288 288  (((
289 -(% style="color:#4f81bd" %)**Type Code 0xAF**
287 +(% style="color:blue" %)**Type Code 0xAF**
290 290  )))
291 291  
292 292  (((
... ... @@ -297,7 +297,7 @@
297 297  )))
298 298  
299 299  (((
300 -(% style="color:red" %)Note: if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.
298 +(% style="color:red" %)**Note: if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.**
301 301  )))
302 302  
303 303  (((
... ... @@ -332,9 +332,8 @@
332 332  will execute an uplink after got this command.
333 333  )))
334 334  
335 -(((
336 -
337 337  
334 +(((
338 338  (% style="color:blue" %)**Example:**
339 339  )))
340 340  
... ... @@ -344,35 +344,32 @@
344 344  
345 345  [[image:image-20220601144149-6.png]]
346 346  
347 -DOWNLINK
344 +**DOWNLINK**
348 348  
349 349  
350 -
351 351  [[image:image-20220601143803-3.png]]
352 352  
353 -DOWNLINK
349 +**DOWNLINK**
354 354  
355 355  
356 -
357 357  [[image:image-20220601144053-5.png]]
358 358  
359 -DOWNLINK
354 +**DOWNLINK**
360 360  
361 361  
362 -
363 363  [[image:image-20220601143921-4.png]]
364 364  
365 -DOWNLINK
359 +**DOWNLINK**
366 366  
367 367  
368 -
369 369  [[image:image-20220601142805-5.png]]
370 370  
371 -DOWNLINK
372 -
364 +**DOWNLINK**
373 373  
374 -=== **1.3.4 How to configure and output commands for RS485 to USB** ===
375 375  
367 +=== 1.3.4 How to configure and output commands for RS485 to USB ===
368 +
369 +
376 376  (((
377 377  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.
378 378  )))
... ... @@ -391,26 +391,21 @@
391 391  
392 392  (((
393 393  check digit: Even
394 -
395 -
396 396  )))
397 397  
398 398  [[image:image-20220527093708-21.png]]
399 399  
400 -USB
392 +**USB**
401 401  
402 402  
403 -
404 404  [[image:image-20220527093747-22.png]]
405 405  
406 -USB
397 +**USB**
407 407  
408 408  
409 409  
410 410  (((
411 411  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.
412 -
413 -
414 414  )))
415 415  
416 416  (((
... ... @@ -425,10 +425,10 @@
425 425  
426 426  [[image:image-20220527093821-23.png]]
427 427  
428 -USB
417 +**USB**
429 429  
430 430  
431 -=== **1.3.5 How to configure multiple devices and modify device addresses** ===
420 +=== 1.3.5 How to configure multiple devices and modify device addresses ===
432 432  
433 433  
434 434  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.
... ... @@ -444,6 +444,7 @@
444 444  
445 445  (% style="color:blue" %)**Example**(%%): These two meters are examples of setting parameters and device addresses.
446 446  
436 +
447 447  [[image:image-20220527093950-25.png]]
448 448  
449 449  
... ... @@ -458,7 +458,7 @@
458 458  
459 459  (((
460 460  (((
461 -We can use **AT+CFGDEV** to set the device address.
451 +We can use (% style="color:blue" %)**AT+CFGDEV**(%%) to set the device address.
462 462  )))
463 463  )))
464 464  
... ... @@ -476,9 +476,9 @@
476 476  **AT+CFGDEV:01 10 00 61 00 01 02 00 02,1**
477 477  )))
478 478  
479 -* 01:device adaress
469 +* 01: device adaress
480 480  
481 -* 10:function code
471 +* 10: function code
482 482  
483 483  * 00 61：Register address
484 484  
... ... @@ -502,11 +502,14 @@
502 502  [[image:image-20220601142607-4.png]]
503 503  
504 504  
505 -**PAYLOAD:01 08 DF 43 62**
495 +(% style="color:blue" %)**PAYLOAD: 01 08 DF 43 62**
506 506  
507 507  * 08 DF is the valid value of the meter with device address 02.
508 508  * 43 62 is the valid value of the meter with device address 01.
509 509  
500 +(% style="display:none" %) (%%)
501 +
502 +
510 510  == 1.4 Example 4: Circuit Breaker Remote Open Close ==
511 511  
512 512  
... ... @@ -516,32 +516,123 @@
516 516  
517 517  [[image:image-20220527094330-30.png]]
518 518  
519 -Connection
512 +**Connection**
520 520  
521 521  
522 -* 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/]]
515 +* 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"]]
523 523  
517 +
524 524  == 1.5 Example 5: SEM Three Energy Meter with RS485-BL or RS485-LN ==
525 525  
526 526  
527 527  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:
528 528  
529 -* 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);"]]
530 -* 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]]
523 +* 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);"]]
531 531  
525 +* 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"]]
526 +
527 +
532 532  == 1.6 Example 6: CEM C31 485-T1-MID Energy Meter with RS485-LN ==
533 533  
534 534  
535 535  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:
536 536  
537 -* 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);"]]
533 +* 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);"]]
538 538  
535 +
539 539  == 1.7 Example 7: Schneider Electric PLC M221 with RS485-BL ==
540 540  
541 541  
542 542  [[image:image-20220527094556-31.png]]
543 543  
541 +
544 544  Network Structure
545 545  
546 -
547 547  * [[Reference Instruction>>url:https://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/Schneider%20Electric%20PLC/]]
545 +
546 +
547 +== 1.8 Example 8: This sketch is supposed to test Dragino RS485-BL (Modbus master), using an Arduino UNO as a Modbus slave. ==
548 +
549 +
550 +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.
551 +
552 +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.
553 +
554 +This is released the code under GNU LGPL licence on Github:
555 +
556 +[[https:~~/~~/github.com/zorbaproject/ArduinoModbusForDraginoRS485>>url:https://github.com/zorbaproject/ArduinoModbusForDraginoRS485]]
557 +
558 +
559 +== 1.9 Example 9: RS485-LN and ultrasonic flow meter transmission data ==
560 +
561 +
562 +It shows how to use RS485-LN to connect to an ultrasonic flow meter and read the data from the ultrasonic flow meter.
563 +
564 +
565 +Need to prepare RS485-LN, recharger, Electric wire
566 +
567 +[[image:1720669739434-926.png]] [[image:1720669744315-613.png]]
568 +
569 +
570 +=== 1.9.1 Setting Ultrasonic Flowmeter ===
571 +
572 +
573 +Adjust the M option corresponding to the ultrasonic flowmeter as follows
574 +
575 +M52 sets RS485 Port  M62 sets 9600, none, 1  M63 sets automatic
576 +
577 +[[image:1720669933691-331.png]][[image:1720669981767-254.png]][[image:1720670003601-544.png]]
578 +
579 +
580 +=== 1.9.2 Setting Dragino RS485-LN ===
581 +
582 +
583 +The RS485-LN wiring port is as shown below. Connect the power supply and RS485 A/B line according to the diagram.
584 +
585 +[[image:1720670016539-422.png]][[image:1720670019136-658.png]]
586 +
587 +
588 +=== 1.9.3 Connect the RS485-LN to Ultrasonic Flowmeter ===
589 +
590 +
591 +According to the instructions of the ultrasonic flow meter, 26 and 27 are the + and - of RS485, corresponding to the A and B ports of RS485.
592 +
593 +[[image:1720670035661-234.png]][[image:1720670041974-372.png||height="417" width="436"]]
594 +
595 +
596 +=== 1.9.4 Full wiring example ===
597 +
598 +
599 +The yellow wire connects port 26 and port A of RS485-LN.
600 +
601 +The green wire connects port 27 and port B of RS485-LN.
602 +
603 +[[image:1720670079781-764.png]]
604 +
605 +
606 +=== 1.9.5 How to read ultrasonic flow meter data via RS485 ===
607 +
608 +
609 +[[image:1720670090204-634.png]]
610 +
611 +
612 +For example, I want to read Positive
613 +
614 +Through M02, we can see that the POS data is 54.9862
615 +
616 +[[image:1720670103571-173.png]][[image:1720670108127-723.png||height="597" width="645"]]
617 +
618 +Registers are 9-12, so the read command is AT+CFGDEV=01 03 00 08 00 04,1(,1 is used for automatic complement)
619 +
620 +[[image:1720670123955-149.png]]
621 +
622 +
623 +00 36 00 00 is the integer of the read value
624 +
625 +78 79 3f 7c is a decimal, but it needs to be converted and parsed into floating point. The parsing order is CDAB, which is 3f 7c 78 79
626 +
627 +Conversion and parsing website:http:~/~/www.speedfly.cn/tools/hexconvert/
628 +
629 +[[image:1720670134750-980.png]]
630 +
631 +
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