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edited by Xiaoling
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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/||_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  
41 +== 1.2 Example 2: Connect to Pulse Counter ==
39 39  
40 -== **1.2 Example 2: Connect to Pulse Counter** ==
41 41  
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]]
47 +[[image:image-20220527092058-3.png||height="552" width="905"]]
47 47  
48 -Connection
49 +**Connection**
49 49  
50 50  
52 +[[image:image-20220527092146-4.png||height="507" width="906"]]
51 51  
52 -[[image:image-20220527092146-4.png]]
54 +**Connection**
53 53  
54 -Connection
55 55  
56 -
57 57  (% style="color:blue" %)**Related documents:**
58 58  
59 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 +
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  
64 +== 1.3 Example 3: Use RS485-LN with energy meters ==
63 63  
64 -== **1.3 Example3: Use RS485-LN with energy meters** ==
66 +=== 1.3.1 OverView ===
65 65  
66 66  
67 -=== **1.3.1 OverView** ===
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  )))
... ... @@ -77,10 +77,9 @@
77 77  
78 78  [[image:image-20220527092419-5.png]]
79 79  
80 -Connection1
79 +**Connection1**
81 81  
82 82  
83 -
84 84  (((
85 85  (% style="color:blue" %)**How to connect with Energy Meter：**
86 86  
... ... @@ -96,34 +96,30 @@
96 96  )))
97 97  
98 98  (((
99 -Power Source VIN to RS485-LN VIN+
97 +Power Source **VIN** to RS485-LN **VIN+**
100 100  )))
101 101  
102 102  (((
103 -Power Source GND to RS485-LN VIN-
101 +Power Source **GND** to RS485-LN **VIN-**
104 104  )))
105 105  
106 106  (((
107 107  Once there is power, the RS485-LN will be on.
108 -
109 -
110 110  )))
111 111  
112 112  [[image:image-20220527092514-6.png]]
113 113  
114 -Connection2
110 +**Connection2**
115 115  
116 116  
117 -
118 118  [[image:image-20220527092555-7.png]]
119 119  
120 -Connection3
115 +**Connection3**
121 121  
122 122  
118 +=== 1.3.2 How to use the parameters of the energy meter and MODBUS commands ===
123 123  
124 -=== **1.3.2 How to use the parameters of the energy meter and MODBUS commands** ===
125 125  
126 -
127 127  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.
128 128  
129 129  [[image:image-20220601143257-10.png]]
... ... @@ -132,9 +132,13 @@
132 132  (% style="color:blue" %)**Example:**(%%)  AT+COMMAND1=01 03 00 00 00 01 84 0A
133 133  
134 134  * The first byte : slave address code (=001～247)
129 +
135 135  * The second byte : read register value function code
131 +
136 136  * 3rd and 4th bytes: start address of register to be read
133 +
137 137  * 5th and 6th bytes: Number of registers to read
135 +
138 138  * 7th and 8th bytes: CRC16 checksum from bytes 1 to 6.
139 139  
140 140  (((
... ... @@ -147,27 +147,24 @@
147 147  )))
148 148  
149 149  * The first byte ARD: slave address code (=001～254)
148 +
150 150  * The second byte: Return to read function code
150 +
151 151  * 3rd byte: total number of bytes
152 +
152 152  * 4th～5th bytes: register data
154 +
153 153  * The 6th and 7th bytes: CRC16 checksum
156 +
154 154  * 08 FD is register data. Use short integer 16 bits to convert to decimal, get 2301, then 230.1V is the voltage.
155 155  
156 -(% class="wikigeneratedid" %)
157 -(((
158 -
159 159  
160 +=== 1.3.3 How to configure RS485-LN and parse output commands ===
160 160  
161 -
162 -)))
163 163  
164 -=== **1.3.3 How to configure RS485-LN and parse output commands** ===
165 -
166 -
167 167  RS485-LN provides two configuration methods: AT COMMAND and DOWNLINK.
168 168  
169 169  
170 -
171 171  ==== **1.3.3.1 via AT COMMAND** ====
172 172  
173 173  
... ... @@ -175,11 +175,13 @@
175 175  
176 176  (((
177 177  If the configured parameters and commands are incorrect, the return value is not obtained.
173 +
174 +
178 178  )))
179 179  
180 180  [[image:image-20220601143201-9.png]]
181 181  
182 -AT COMMAND
179 +**AT COMMAND**
183 183  
184 184  
185 185  (% class="box infomessage" %)
... ... @@ -195,31 +195,26 @@
195 195  
196 196  [[image:image-20220601143115-8.png]]
197 197  
198 -AT COMMAND
195 +**AT COMMAND**
199 199  
200 200  
201 -
202 202  PAYLOAD is available after the valid value is intercepted.
203 203  
204 -
205 205  [[image:image-20220601143046-7.png]]
206 206  
207 -AT COMMAND
202 +**AT COMMAND**
208 208  
209 209  
210 -
211 211  You can get configured PAYLOAD on TTN.
212 212  
213 213  [[image:image-20220601143519-1.png]]
214 214  
215 215  (((
216 -AT COMMAND
210 +**AT COMMAND**
217 217  )))
218 218  
219 219  (((
220 220  
221 -
222 -
223 223  )))
224 224  
225 225  (((
... ... @@ -273,16 +273,14 @@
273 273  AT COMMAND
274 274  
275 275  
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.**
276 276  
277 -(% 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.**
278 278  
279 -
280 280  [[image:image-20220601143642-2.png]]
281 281  
282 282  AT COMMAND
283 283  
284 284  
285 -
286 286  ==== **1.3.3.2 via LoRaWAN DOWNLINK** ====
287 287  
288 288  
... ... @@ -289,15 +289,12 @@
289 289  [[image:image-20220527093358-15.png]]
290 290  
291 291  (((
292 -DOWNLINK
282 +**DOWNLINK**
293 293  )))
294 294  
295 -(((
296 -
297 -)))
298 298  
299 299  (((
300 -(% style="color:#4f81bd" %)**Type Code 0xAF**
287 +(% style="color:blue" %)**Type Code 0xAF**
301 301  )))
302 302  
303 303  (((
... ... @@ -309,8 +309,6 @@
309 309  
310 310  (((
311 311  (% style="color:red" %)**Note: if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.**
312 -
313 -
314 314  )))
315 315  
316 316  (((
... ... @@ -345,9 +345,8 @@
345 345  will execute an uplink after got this command.
346 346  )))
347 347  
348 -(((
349 -
350 350  
334 +(((
351 351  (% style="color:blue" %)**Example:**
352 352  )))
353 353  
... ... @@ -357,35 +357,30 @@
357 357  
358 358  [[image:image-20220601144149-6.png]]
359 359  
360 -DOWNLINK
344 +**DOWNLINK**
361 361  
362 362  
363 -
364 364  [[image:image-20220601143803-3.png]]
365 365  
366 -DOWNLINK
349 +**DOWNLINK**
367 367  
368 368  
369 -
370 370  [[image:image-20220601144053-5.png]]
371 371  
372 -DOWNLINK
354 +**DOWNLINK**
373 373  
374 374  
375 -
376 376  [[image:image-20220601143921-4.png]]
377 377  
378 -DOWNLINK
359 +**DOWNLINK**
379 379  
380 380  
381 -
382 382  [[image:image-20220601142805-5.png]]
383 383  
384 -DOWNLINK
385 -
364 +**DOWNLINK**
386 386  
387 387  
388 -=== **1.3.4 How to configure and output commands for RS485 to USB** ===
367 +=== 1.3.4 How to configure and output commands for RS485 to USB ===
389 389  
390 390  
391 391  (((
... ... @@ -406,26 +406,21 @@
406 406  
407 407  (((
408 408  check digit: Even
409 -
410 -
411 411  )))
412 412  
413 413  [[image:image-20220527093708-21.png]]
414 414  
415 -USB
392 +**USB**
416 416  
417 417  
418 -
419 419  [[image:image-20220527093747-22.png]]
420 420  
421 -USB
397 +**USB**
422 422  
423 423  
424 424  
425 425  (((
426 426  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.
427 -
428 -
429 429  )))
430 430  
431 431  (((
... ... @@ -440,13 +440,12 @@
440 440  
441 441  [[image:image-20220527093821-23.png]]
442 442  
443 -USB
417 +**USB**
444 444  
445 445  
420 +=== 1.3.5 How to configure multiple devices and modify device addresses ===
446 446  
447 -=== **1.3.5 How to configure multiple devices and modify device addresses** ===
448 448  
449 -
450 450  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.
451 451  
452 452  (((
... ... @@ -460,6 +460,7 @@
460 460  
461 461  (% style="color:blue" %)**Example**(%%): These two meters are examples of setting parameters and device addresses.
462 462  
436 +
463 463  [[image:image-20220527093950-25.png]]
464 464  
465 465  
... ... @@ -492,9 +492,9 @@
492 492  **AT+CFGDEV:01 10 00 61 00 01 02 00 02,1**
493 493  )))
494 494  
495 -* 01:device adaress
469 +* 01: device adaress
496 496  
497 -* 10:function code
471 +* 10: function code
498 498  
499 499  * 00 61：Register address
500 500  
... ... @@ -523,6 +523,9 @@
523 523  * 08 DF is the valid value of the meter with device address 02.
524 524  * 43 62 is the valid value of the meter with device address 01.
525 525  
500 +(% style="display:none" %) (%%)
501 +
502 +
526 526  == 1.4 Example 4: Circuit Breaker Remote Open Close ==
527 527  
528 528  
... ... @@ -532,13 +532,12 @@
532 532  
533 533  [[image:image-20220527094330-30.png]]
534 534  
535 -Connection
512 +**Connection**
536 536  
537 537  
538 538  * 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"]]
539 539  
540 540  
541 -
542 542  == 1.5 Example 5: SEM Three Energy Meter with RS485-BL or RS485-LN ==
543 543  
544 544  
... ... @@ -545,10 +545,10 @@
545 545  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:
546 546  
547 547  * 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);"]]
524 +
548 548  * 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"]]
549 549  
550 550  
551 -
552 552  == 1.6 Example 6: CEM C31 485-T1-MID Energy Meter with RS485-LN ==
553 553  
554 554  
... ... @@ -557,13 +557,118 @@
557 557  * 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);"]]
558 558  
559 559  
560 -
561 561  == 1.7 Example 7: Schneider Electric PLC M221 with RS485-BL ==
562 562  
563 563  
564 564  [[image:image-20220527094556-31.png]]
565 565  
541 +
566 566  Network Structure
567 567  
568 -
569 569  * [[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.
576 +
577 +[[image:1720669933691-331.png]]
578 +
579 +
580 +M62 sets 9600, none, 1
581 +
582 +[[image:1720669981767-254.png]]
583 +
584 +
585 +M63 sets automatic
586 +
587 +[[image:1720670003601-544.png]]
588 +
589 +
590 +=== 1.9.2 Setting Dragino RS485-LN ===
591 +
592 +
593 +The RS485-LN wiring port is as shown below. Connect the power supply and RS485 A/B line according to the diagram.
594 +
595 +[[image:1720670016539-422.png]][[image:1720670019136-658.png]]
596 +
597 +
598 +=== 1.9.3 Connect the RS485-LN to Ultrasonic Flowmeter ===
599 +
600 +
601 +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.
602 +
603 +[[image:1720670035661-234.png]][[image:1720670041974-372.png||height="417" width="436"]]
604 +
605 +
606 +=== 1.9.4 Full wiring example ===
607 +
608 +
609 +The yellow wire connects port 26 and port A of RS485-LN.
610 +
611 +The green wire connects port 27 and port B of RS485-LN.
612 +
613 +[[image:1720670079781-764.png]]
614 +
615 +
616 +=== 1.9.5 How to read ultrasonic flow meter data via RS485 ===
617 +
618 +
619 +[[image:1720670090204-634.png]]
620 +
621 +
622 +For example, I want to read Positive
623 +
624 +Through M02, we can see that the POS data is 54.9862
625 +
626 +[[image:1720670103571-173.png]][[image:1720670108127-723.png||height="597" width="645"]]
627 +
628 +Registers are 9-12, so the read command is AT+CFGDEV=01 03 00 08 00 04,1(,1 is used for automatic complement)
629 +
630 +[[image:1720670123955-149.png]]
631 +
632 +AT+CFGDEV=01 03 00 08 00 04 c5 cb ,1
633 +
634 +RETURN DATA:
635 +
636 +01 03 08 00 36 00 00 78 79 3f 7c 1a bc
637 +
638 +
639 +OK
640 +
641 +
642 +00 36 00 00 is the integer of the read value
643 +
644 +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
645 +
646 +Conversion and parsing website:http:~/~/www.speedfly.cn/tools/hexconvert/
647 +
648 +[[image:1720670134750-980.png]]
649 +
650 +
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