Last modified by Karry Zhuang on 2024/07/11 11:58
<
From version < 6.2 >
edited by Xiaoling
on 2022/05/12 11:56
To version < 1.7 >
edited by Xiaoling
on 2022/05/12 09:54
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... ... @@ -1,8 +6,3 @@
1 -(% class="wikigeneratedid" %)
2 - **Contents:**
3 -
4 -{{toc/}}
5 -
6 6  = 1. Introduction =
7 7  
8 8  This article provide the examples for RS485-LN to connect to different type of RS485 sensors.
... ... @@ -15,7 +15,6 @@
15 15  
16 16  Connection
17 17  
18 -
19 19  [[image:https://wiki.dragino.com/images/thumb/f/f2/RS485_02.png/600px-RS485_02.png||height="743" width="528"]](% style="display:none" %)
20 20  
21 21  Connection
... ... @@ -26,6 +26,7 @@
26 26  * [[Configure Manual>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/Relay_VFD/]] : Explanation on how to integrate to Node-red and to the Mobile Phone, and with link to the Github code.
27 27  * [[Video Demo>>url:https://www.youtube.com/watch?v=TAFZ5eaf-MY&t=6s&ab_channel=XavierFlorensaBerenguer]]
28 28  
23 +
29 29  == 1.2 Example 2: Connect to Pulse Counter ==
30 30  
31 31  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:
... ... @@ -34,7 +34,6 @@
34 34  
35 35  Connection
36 36  
37 -
38 38  [[image:https://wiki.dragino.com/images/thumb/5/5f/RS485_02_2.png/600px-RS485_02_2.png||height="337" width="600"]]
39 39  
40 40  Connection
... ... @@ -42,6 +42,7 @@
42 42  * [[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/]] : Configure Document
43 43  * [[Dragino Solution in Farm>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/&file=Dragino%20on%20Farms.pptx]]
44 44  
39 +
45 45  == 1.3 Example3: Use RS485-LN with energy meters ==
46 46  
47 47  === 1.3.1 OverView ===
... ... @@ -54,41 +54,28 @@
54 54  This example describes a single-phase meter.This is the connection between the RS485-LN and the energy meter.
55 55  )))
56 56  
57 -[[image:https://wiki.dragino.com/images/thumb/f/f4/Meter1.jpg/600px-Meter1.jpg||height="726" width="545"]]
52 +[[image:https://wiki.dragino.com/images/thumb/f/f4/Meter1.jpg/600px-Meter1.jpg||height="800" width="600"]]
58 58  
59 59  Connection1
60 60  
61 -(((
62 62  How to connect with Energy Meter：
63 -)))
64 64  
65 -(((
66 66  Follow the instructions of the electric energy meter to connect the phase line and the neutral line, and then connect 485A+ and 485B- to RS485A and RA485B of RS485-LN respectively.
67 -)))
68 68  
69 -(((
70 70  The RS485-LN can be powered by 7 ~~ 24V DC power source. Connection as below
71 -)))
72 72  
73 -(((
74 74  Power Source VIN to RS485-LN VIN+
75 -)))
76 76  
77 -(((
78 78  Power Source GND to RS485-LN VIN-
79 -)))
80 80  
81 -(((
82 82  Once there is power, the RS485-LN will be on.
83 -)))
84 84  
85 -[[image:https://wiki.dragino.com/images/thumb/1/15/Meter2.jpg/600px-Meter2.jpg||height="433" width="577"]]
68 +[[image:https://wiki.dragino.com/images/thumb/1/15/Meter2.jpg/600px-Meter2.jpg||height="450" width="600"]]
86 86  
87 87  Connection2
88 88  
72 +[[image:https://wiki.dragino.com/images/thumb/a/a5/Meter3.jpg/600px-Meter3.jpg||height="800" width="600"]]
89 89  
90 -[[image:https://wiki.dragino.com/images/thumb/a/a5/Meter3.jpg/600px-Meter3.jpg||height="712" width="534"]]
91 -
92 92  Connection3
93 93  
94 94  
... ... @@ -98,10 +98,7 @@
98 98  
99 99  [[image:https://wiki.dragino.com/images/thumb/3/35/Meter4.png/600px-Meter4.png||alt="Meter4.png" height="193" width="600"]]
100 100  
101 -(% class="box infomessage" %)
102 -(((
103 103  Example:AT+COMMAND1=01 03 00 00 00 01 84 0A
104 -)))
105 105  
106 106  * The first byte : slave address code (=001～247)
107 107  * The second byte : read register value function code
... ... @@ -109,14 +109,9 @@
109 109  * 5th and 6th bytes: Number of registers to read
110 110  * 7th and 8th bytes: CRC16 checksum from bytes 1 to 6.
111 111  
112 -(((
113 113  How to parse the reading of the return command of the parameter：
114 -)))
115 115  
116 -(% class="box infomessage" %)
117 -(((
118 118  Example:RETURN1：01 03 02 08 FD 7E 05
119 -)))
120 120  
121 121  * The first byte ARD: slave address code (=001～254)
122 122  * The second byte: Return to read function code
... ... @@ -125,26 +125,22 @@
125 125  * The 6th and 7th bytes: CRC16 checksum
126 126  * 08 FD is register data. Use short integer 16 bits to convert to decimal, get 2301, then 230.1V is the voltage.
127 127  
102 +
128 128  === 1.3.3 How to configure RS485-LN and parse output commands ===
129 129  
130 130  RS485-LN provides two configuration methods: AT COMMAND and DOWNLINK.
131 131  
132 -==== 1.3.3.1 via AT COMMAND: ====
107 +==== via AT COMMAND: ====
133 133  
134 -First, we can use **AT+CFGDEV** to get the return value, and we can also judge whether the input parameters are correct.
109 +First, we can use AT+CFGDEV to get the return value, and we can also judge whether the input parameters are correct.
135 135  
136 -(((
137 137  If the configured parameters and commands are incorrect, the return value is not obtained.
138 -)))
139 139  
140 140  [[image:https://wiki.dragino.com/images/b/bc/AT_COMMAND1.png||height="358" width="456"]]
141 141  
142 142  AT COMMAND
143 143  
144 -(% class="box infomessage" %)
145 -(((
146 - AT+DATACUTx : This command defines how to handle the return from AT+COMMANDx, max reture length is 40 bytes. AT+DATACUTx=a,b,c
147 -)))
117 +AT+DATACUTx : This command defines how to handle the return from AT+COMMANDx, max reture length is 40 bytes. AT+DATACUTx=a,b,c
148 148  
149 149  a: length for the return of AT+COMMAND
150 150  
... ... @@ -158,7 +158,6 @@
158 158  
159 159  PAYLOAD is available after the valid value is intercepted.
160 160  
161 -
162 162  [[image:https://wiki.dragino.com/images/3/3a/AT_COMMAND4.png||height="219" width="576"]]
163 163  
164 164  AT COMMAND
... ... @@ -165,56 +165,29 @@
165 165  
166 166  You can get configured PAYLOAD on TTN.
167 167  
168 -
169 169  [[image:https://wiki.dragino.com/images/thumb/c/c2/AT_COMMAND3.png/600px-AT_COMMAND3.png||height="138" width="600"]]
170 170  
171 -(((
172 172  AT COMMAND
173 -)))
174 174  
175 -(((
176 -
177 -)))
141 +Example: CMD1:Read current data with MODBUS command. address:0x03 AT+COMMAND1= 01 03 00 03 00 01,1
178 178  
179 -(((
180 -**Example**: CMD1:Read current data with MODBUS command. address:0x03 AT+COMMAND1= 01 03 00 03 00 01,1
181 -)))
182 -
183 -(((
184 184  RETURN1:01 03 02 00 02 39 85 00 00(return data)
185 -)))
186 186  
187 -(((
188 188  AT+DATACUT1:9,1,4+5+6+7 Take the return value 00 02 39 85 as the valid value of reading current data and used to splice payload.
189 -)))
190 190  
191 -(((
192 192  CMD2:Read voltage data with MODBUS command. address:0x00 AT+COMMAND2= 01 03 00 00 00 01,1
193 -)))
194 194  
195 -(((
196 196  RETURN2:01 03 02 08 DC BE 1D(return data)
197 -)))
198 198  
199 -(((
200 200  AT+DATACUT2:7,1,4+5 Take the return value 08 DC as the valid value of reading voltage data and used to splice payload.
201 -)))
202 202  
203 -(((
204 204  CMD3:Read total active energy data with MODBUS command. address:0x0031 AT+COMMAND3= 01 03 00 31 00 02,1
205 -)))
206 206  
207 -(((
208 208  RETURN3:01 03 04 00 00 00 44 FA 00(return data)
209 -)))
210 210  
211 -(((
212 212  AT+DATACUT3:9,1,4+5+6+7 Take the return value 00 00 00 44 as the valid value of reading total active energy data and used to splice payload.
213 -)))
214 214  
215 -(((
216 216  Payload:01 00 02 39 85 08 DC 00 00 00 44
217 -)))
218 218  
219 219  [[image:https://wiki.dragino.com/images/thumb/9/9b/AT_COMMAND10.png/600px-AT_COMMAND10.png||height="278" width="600"]]
220 220  
... ... @@ -222,99 +222,58 @@
222 222  
223 223  01 is device address,00 02 is the current, 08 DC is the voltage,00 00 00 44 is the total active energy.
224 224  
225 -
226 226  [[~[~[image:https://wiki.dragino.com/images/thumb/b/b8/AT_COMMAND11.png/600px-AT_COMMAND11.png~|~|height="271" width="600"~]~]>>url:https://wiki.dragino.com/index.php/File:AT_COMMAND11.png]]
227 227  
228 228  AT COMMAND
229 229  
171 +==== 1.3.3.1 via LoRaWAN DOWNLINK ====
230 230  
231 -==== 1.3.3.2 via LoRaWAN DOWNLINK ====
173 +[[image:https://wiki.dragino.com/images/thumb/f/fc/DOWNLINK_METER1.png/600px-DOWNLINK_METER1.png||height="423" width="600"]]
232 232  
233 -[[image:image-20220512104358-3.png]]
234 -
235 -(((
236 236  DOWNLINK
237 -)))
238 238  
239 -(((
240 -
241 -)))
177 +Type Code 0xAF
242 242  
243 -(((
244 -**Type Code 0xAF**
245 -)))
246 -
247 -(((
248 -(% class="box infomessage" %)
249 -(((
250 250  0xAF downlink command can be used to set AT+COMMANDx or AT+DATACUTx.
251 -)))
252 -)))
253 253  
254 -(((
255 255  Note: if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.
256 -)))
257 257  
258 -(((
259 259  Format: AF MM NN LL XX XX XX XX YY
260 -)))
261 261  
262 -(((
263 263  Where:
264 -)))
265 265  
266 -(((
267 267  MM: the ATCOMMAND or AT+DATACUT to be set. Value from 01 ~~ 0F,
268 -)))
269 269  
270 -(((
271 271  NN: 0: no CRC; 1: add CRC-16/MODBUS ; 2: set the AT+DATACUT value.
272 -)))
273 273  
274 -(((
275 275  LL: The length of AT+COMMAND or AT+DATACUT command
276 -)))
277 277  
278 -(((
279 279  XX XX XX XX: AT+COMMAND or AT+DATACUT command
280 -)))
281 281  
282 -(((
283 283  YY: If YY=0, RS485-LN will execute the downlink command without uplink; if YY=1, RS485-LN
284 -)))
285 285  
286 -(((
287 287  will execute an uplink after got this command.
288 -)))
289 289  
290 -(((
291 291  Example:
292 -)))
293 293  
294 -(((
295 295  AF 03 01 06 0A 05 00 04 00 01 00: Same as AT+COMMAND3=0A 05 00 04 00 01,1
296 -)))
297 297  
298 298  [[image:https://wiki.dragino.com/images/thumb/4/45/DOWNLINK_METER2.png/600px-DOWNLINK_METER2.png||height="208" width="600"]]
299 299  
300 300  DOWNLINK
301 301  
302 -
303 303  [[~[~[image:https://wiki.dragino.com/images/thumb/2/20/DOWNLINK_METER3.png/600px-DOWNLINK_METER3.png~|~|height="105" width="600"~]~]>>url:https://wiki.dragino.com/index.php/File:DOWNLINK_METER3.png]]
304 304  
305 305  DOWNLINK
306 306  
307 -
308 308  [[image:https://wiki.dragino.com/images/thumb/2/27/DOWNLINK_METER4.png/600px-DOWNLINK_METER4.png||height="210" width="600"]]
309 309  
310 310  DOWNLINK
311 311  
312 -
313 313  [[~[~[image:https://wiki.dragino.com/images/thumb/3/39/DOWNLINK_METER5.png/600px-DOWNLINK_METER5.png~|~|height="176" width="600"~]~]>>url:https://wiki.dragino.com/index.php/File:DOWNLINK_METER5.png]]
314 314  
315 315  DOWNLINK
316 316  
317 -
318 318  [[image:https://wiki.dragino.com/images/thumb/a/a2/DOWNLINK_METER6.png/600px-DOWNLINK_METER6.png||height="365" width="600"]]
319 319  
320 320  DOWNLINK
... ... @@ -322,47 +322,30 @@
322 322  
323 323  === 1.3.4 How to configure and output commands for RS485 to USB ===
324 324  
325 -(((
326 326  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.
327 -)))
328 328  
329 -(((
330 330  First, connect the A+ and A- of the USB to the 485 A and 485 B of the energy meter.
331 -)))
332 332  
333 -(((
334 334  Open the serial port debugging, set the send and receive to HEX.
335 -)))
336 336  
337 -(((
338 338  Baud rate: 9600
339 -)))
340 340  
341 -(((
342 342  check digit: Even
343 -)))
344 344  
345 -[[image:https://wiki.dragino.com/images/thumb/8/8f/Usb_meter2.jpg/600px-Usb_meter2.jpg||height="725" width="544"]]
236 +[[image:https://wiki.dragino.com/images/thumb/8/8f/Usb_meter2.jpg/600px-Usb_meter2.jpg||height="800" width="600"]]
346 346  
347 347  USB
348 348  
240 +[[image:https://wiki.dragino.com/images/thumb/6/62/Usb_meter1.jpg/600px-Usb_meter1.jpg||height="800" width="600"]]
349 349  
350 -[[image:https://wiki.dragino.com/images/thumb/6/62/Usb_meter1.jpg/600px-Usb_meter1.jpg||height="728" width="546"]]
351 -
352 352  USB
353 353  
354 -
355 -(((
356 356  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.
357 -)))
358 358  
359 -(((
360 -**Example:**  input：01 03 00 31 00 02 95 c4
361 -)))
246 +Example:input：01 03 00 31 00 02 95 c4
362 362  
363 -(((
364 - output：01 03 04 00 00 00 42 7A 02
365 -)))
248 +{{{ output:01 03 04 00 00 00 42 7A 02
249 +}}}
366 366  
367 367  [[image:https://wiki.dragino.com/images/thumb/b/b3/Usb_meter3.jpg/600px-Usb_meter3.jpg||height="466" width="600"]]
368 368  
... ... @@ -372,37 +372,21 @@
372 372  
373 373  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.
374 374  
375 -(((
376 -(((
377 377  Set the device address according to the parameters in the appendix of the MODBUS communication protocol.
378 -)))
379 -)))
380 380  
381 381  [[image:https://wiki.dragino.com/images/thumb/1/1f/Double_meter3.png/600px-Double_meter3.png||alt="Double meter3.png" height="83" width="600"]]
382 382  
383 -**Example**:These two meters are examples of setting parameters and device addresses.
263 +Example:These two meters are examples of setting parameters and device addresses.
384 384  
385 -[[image:https://wiki.dragino.com/images/thumb/e/ee/Double_meter1.jpg/600px-Double_meter1.jpg||alt="Double meter1.jpg" height="737" width="553"]]
265 +[[image:https://wiki.dragino.com/images/thumb/e/ee/Double_meter1.jpg/600px-Double_meter1.jpg||alt="Double meter1.jpg" height="800" width="600"]]
386 386  
387 -[[image:https://wiki.dragino.com/images/thumb/7/72/Double_meter2.jpg/600px-Double_meter2.jpg||alt="Double meter2.jpg" height="733" width="550"]]
267 +[[image:https://wiki.dragino.com/images/thumb/7/72/Double_meter2.jpg/600px-Double_meter2.jpg||alt="Double meter2.jpg" height="800" width="600"]]
388 388  
389 -(((
390 -(((
391 391  First of all, since the default device address of the energy meter is 01, the configuration of two energy meters will conflict, so we first connect an energy meter and configure the device address.
392 -)))
393 -)))
394 394  
395 -(((
396 -(((
397 397  We can use AT+CFGDEV to set the device address.
398 -)))
399 -)))
400 400  
401 -(((
402 -(((
403 403  We modify the device address 01 of the first energy meter to 02.
404 -)))
405 -)))
406 406  
407 407  [[image:https://wiki.dragino.com/images/6/6b/Double_meter4.png||alt="Double meter4.png" height="141" width="456"]]
408 408  
... ... @@ -437,6 +437,7 @@
437 437  * 08 DF is the valid value of the meter with device address 02.
438 438  * 43 62 is the valid value of the meter with device address 01.
439 439  
308 +
440 440  == 1.4 Example 4: Circuit Breaker Remote Open Close ==
441 441  
442 442  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 SCHNEIDER SMART and Monitor and control your cabinet remotely with no wires and with Dragino RS485-LN LoRaWAN technology. The structure is like below:
... ... @@ -447,6 +447,7 @@
447 447  
448 448  * [[Circuit Breaker Remote Open Close>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/Circuit_Breaker_Remote_Open_Close/]] : Configure Documen
449 449  
319 +
450 450  == 1.5 Example 5: SEM Three Energy Meter with RS485-BL or RS485-LN ==
451 451  
452 452  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:
... ... @@ -455,6 +455,7 @@
455 455  
456 456  * [[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]] : Configure Document for RS485-LN
457 457  
328 +
458 458  == 1.6 Example 6:CEM C31 485-T1-MID Energy Meter with RS485-LN ==
459 459  
460 460  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:
... ... @@ -461,6 +461,7 @@
461 461  
462 462  * [[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]] : Configure Document For RS485-LN
463 463  
335 +
464 464  == 1.7 Example 7:Schneider Electric PLC M221 with RS485-BL ==
465 465  
466 466  [[image:https://wiki.dragino.com/images/thumb/9/97/PLC_M221.png/600px-PLC_M221.png||height="353" width="600"]]
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