Last modified by Karry Zhuang on 2024/07/11 11:58
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From version < 60.2 >
edited by Xiaoling
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1 -XWiki.Xiaoling
1 +XWiki.karry
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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 40  
41 -== **1.2 Example 2: Connect to Pulse Counter** ==
42 -
43 -
44 44  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:
45 45  
46 46  
47 -[[image:image-20220527092058-3.png]]
47 +[[image:image-20220527092058-3.png||height="552" width="905"]]
48 48  
49 -Connection
49 +**Connection**
50 50  
51 51  
52 +[[image:image-20220527092146-4.png||height="507" width="906"]]
52 52  
53 -[[image:image-20220527092146-4.png]]
54 +**Connection**
54 54  
55 -Connection
56 56  
57 -
58 58  (% style="color:blue" %)**Related documents:**
59 59  
60 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"]]
60 +
61 61  * [[Dragino Solution in Farm>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/&file=Dragino%20on%20Farms.pptx]]
62 62  
63 63  
64 +== 1.3 Example 3: Use RS485-LN with energy meters ==
64 64  
66 +=== 1.3.1 OverView ===
65 65  
66 -== **1.3 Example3: Use RS485-LN with energy meters** ==
67 67  
68 -
69 -=== **1.3.1 OverView** ===
70 -
71 -
72 72  (((
73 -(% 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.**
74 74  )))
75 75  
76 76  (((
... ... @@ -79,10 +79,9 @@
79 79  
80 80  [[image:image-20220527092419-5.png]]
81 81  
82 -Connection1
79 +**Connection1**
83 83  
84 84  
85 -
86 86  (((
87 87  (% style="color:blue" %)**How to connect with Energy Meter：**
88 88  
... ... @@ -98,34 +98,30 @@
98 98  )))
99 99  
100 100  (((
101 -Power Source VIN to RS485-LN VIN+
97 +Power Source **VIN** to RS485-LN **VIN+**
102 102  )))
103 103  
104 104  (((
105 -Power Source GND to RS485-LN VIN-
101 +Power Source **GND** to RS485-LN **VIN-**
106 106  )))
107 107  
108 108  (((
109 109  Once there is power, the RS485-LN will be on.
110 -
111 -
112 112  )))
113 113  
114 114  [[image:image-20220527092514-6.png]]
115 115  
116 -Connection2
110 +**Connection2**
117 117  
118 118  
119 -
120 120  [[image:image-20220527092555-7.png]]
121 121  
122 -Connection3
115 +**Connection3**
123 123  
124 124  
118 +=== 1.3.2 How to use the parameters of the energy meter and MODBUS commands ===
125 125  
126 -=== **1.3.2 How to use the parameters of the energy meter and MODBUS commands** ===
127 127  
128 -
129 129  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.
130 130  
131 131  [[image:image-20220601143257-10.png]]
... ... @@ -134,9 +134,13 @@
134 134  (% style="color:blue" %)**Example:**(%%)  AT+COMMAND1=01 03 00 00 00 01 84 0A
135 135  
136 136  * The first byte : slave address code (=001～247)
129 +
137 137  * The second byte : read register value function code
131 +
138 138  * 3rd and 4th bytes: start address of register to be read
133 +
139 139  * 5th and 6th bytes: Number of registers to read
135 +
140 140  * 7th and 8th bytes: CRC16 checksum from bytes 1 to 6.
141 141  
142 142  (((
... ... @@ -149,27 +149,24 @@
149 149  )))
150 150  
151 151  * The first byte ARD: slave address code (=001～254)
148 +
152 152  * The second byte: Return to read function code
150 +
153 153  * 3rd byte: total number of bytes
152 +
154 154  * 4th～5th bytes: register data
154 +
155 155  * The 6th and 7th bytes: CRC16 checksum
156 +
156 156  * 08 FD is register data. Use short integer 16 bits to convert to decimal, get 2301, then 230.1V is the voltage.
157 157  
158 -(% class="wikigeneratedid" %)
159 -(((
160 -
161 161  
160 +=== 1.3.3 How to configure RS485-LN and parse output commands ===
162 162  
163 -
164 -)))
165 165  
166 -=== **1.3.3 How to configure RS485-LN and parse output commands** ===
167 -
168 -
169 169  RS485-LN provides two configuration methods: AT COMMAND and DOWNLINK.
170 170  
171 171  
172 -
173 173  ==== **1.3.3.1 via AT COMMAND** ====
174 174  
175 175  
... ... @@ -177,11 +177,13 @@
177 177  
178 178  (((
179 179  If the configured parameters and commands are incorrect, the return value is not obtained.
173 +
174 +
180 180  )))
181 181  
182 182  [[image:image-20220601143201-9.png]]
183 183  
184 -AT COMMAND
179 +**AT COMMAND**
185 185  
186 186  
187 187  (% class="box infomessage" %)
... ... @@ -197,31 +197,26 @@
197 197  
198 198  [[image:image-20220601143115-8.png]]
199 199  
200 -AT COMMAND
195 +**AT COMMAND**
201 201  
202 202  
203 -
204 204  PAYLOAD is available after the valid value is intercepted.
205 205  
206 -
207 207  [[image:image-20220601143046-7.png]]
208 208  
209 -AT COMMAND
202 +**AT COMMAND**
210 210  
211 211  
212 -
213 213  You can get configured PAYLOAD on TTN.
214 214  
215 215  [[image:image-20220601143519-1.png]]
216 216  
217 217  (((
218 -AT COMMAND
210 +**AT COMMAND**
219 219  )))
220 220  
221 221  (((
222 222  
223 -
224 -
225 225  )))
226 226  
227 227  (((
... ... @@ -275,16 +275,14 @@
275 275  AT COMMAND
276 276  
277 277  
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.**
278 278  
279 -(% 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.**
280 280  
281 -
282 282  [[image:image-20220601143642-2.png]]
283 283  
284 284  AT COMMAND
285 285  
286 286  
287 -
288 288  ==== **1.3.3.2 via LoRaWAN DOWNLINK** ====
289 289  
290 290  
... ... @@ -291,15 +291,12 @@
291 291  [[image:image-20220527093358-15.png]]
292 292  
293 293  (((
294 -DOWNLINK
282 +**DOWNLINK**
295 295  )))
296 296  
297 -(((
298 -
299 -)))
300 300  
301 301  (((
302 -(% style="color:#4f81bd" %)**Type Code 0xAF**
287 +(% style="color:blue" %)**Type Code 0xAF**
303 303  )))
304 304  
305 305  (((
... ... @@ -311,8 +311,6 @@
311 311  
312 312  (((
313 313  (% style="color:red" %)**Note: if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.**
314 -
315 -
316 316  )))
317 317  
318 318  (((
... ... @@ -347,9 +347,8 @@
347 347  will execute an uplink after got this command.
348 348  )))
349 349  
350 -(((
351 -
352 352  
334 +(((
353 353  (% style="color:blue" %)**Example:**
354 354  )))
355 355  
... ... @@ -359,35 +359,30 @@
359 359  
360 360  [[image:image-20220601144149-6.png]]
361 361  
362 -DOWNLINK
344 +**DOWNLINK**
363 363  
364 364  
365 -
366 366  [[image:image-20220601143803-3.png]]
367 367  
368 -DOWNLINK
349 +**DOWNLINK**
369 369  
370 370  
371 -
372 372  [[image:image-20220601144053-5.png]]
373 373  
374 -DOWNLINK
354 +**DOWNLINK**
375 375  
376 376  
377 -
378 378  [[image:image-20220601143921-4.png]]
379 379  
380 -DOWNLINK
359 +**DOWNLINK**
381 381  
382 382  
383 -
384 384  [[image:image-20220601142805-5.png]]
385 385  
386 -DOWNLINK
387 -
364 +**DOWNLINK**
388 388  
389 389  
390 -=== **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 ===
391 391  
392 392  
393 393  (((
... ... @@ -408,26 +408,21 @@
408 408  
409 409  (((
410 410  check digit: Even
411 -
412 -
413 413  )))
414 414  
415 415  [[image:image-20220527093708-21.png]]
416 416  
417 -USB
392 +**USB**
418 418  
419 419  
420 -
421 421  [[image:image-20220527093747-22.png]]
422 422  
423 -USB
397 +**USB**
424 424  
425 425  
426 426  
427 427  (((
428 428  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.
429 -
430 -
431 431  )))
432 432  
433 433  (((
... ... @@ -442,13 +442,12 @@
442 442  
443 443  [[image:image-20220527093821-23.png]]
444 444  
445 -USB
417 +**USB**
446 446  
447 447  
420 +=== 1.3.5 How to configure multiple devices and modify device addresses ===
448 448  
449 -=== **1.3.5 How to configure multiple devices and modify device addresses** ===
450 450  
451 -
452 452  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.
453 453  
454 454  (((
... ... @@ -462,6 +462,7 @@
462 462  
463 463  (% style="color:blue" %)**Example**(%%): These two meters are examples of setting parameters and device addresses.
464 464  
436 +
465 465  [[image:image-20220527093950-25.png]]
466 466  
467 467  
... ... @@ -494,9 +494,9 @@
494 494  **AT+CFGDEV:01 10 00 61 00 01 02 00 02,1**
495 495  )))
496 496  
497 -* 01:device adaress
469 +* 01: device adaress
498 498  
499 -* 10:function code
471 +* 10: function code
500 500  
501 501  * 00 61：Register address
502 502  
... ... @@ -525,6 +525,9 @@
525 525  * 08 DF is the valid value of the meter with device address 02.
526 526  * 43 62 is the valid value of the meter with device address 01.
527 527  
500 +(% style="display:none" %) (%%)
501 +
502 +
528 528  == 1.4 Example 4: Circuit Breaker Remote Open Close ==
529 529  
530 530  
... ... @@ -534,11 +534,12 @@
534 534  
535 535  [[image:image-20220527094330-30.png]]
536 536  
537 -Connection
512 +**Connection**
538 538  
539 539  
540 540  * 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"]]
541 541  
517 +
542 542  == 1.5 Example 5: SEM Three Energy Meter with RS485-BL or RS485-LN ==
543 543  
544 544  
... ... @@ -545,8 +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  
527 +
550 550  == 1.6 Example 6: CEM C31 485-T1-MID Energy Meter with RS485-LN ==
551 551  
552 552  
... ... @@ -554,12 +554,110 @@
554 554  
555 555  * 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);"]]
556 556  
535 +
557 557  == 1.7 Example 7: Schneider Electric PLC M221 with RS485-BL ==
558 558  
559 559  
560 560  [[image:image-20220527094556-31.png]]
561 561  
541 +
562 562  Network Structure
563 563  
564 -
565 565  * [[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 +
633 +00 36 00 00 is the integer of the read value
634 +
635 +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
636 +
637 +Conversion and parsing website:http:~/~/www.speedfly.cn/tools/hexconvert/
638 +
639 +[[image:1720670134750-980.png]]
640 +
641 +
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