Last modified by Karry Zhuang on 2024/07/11 11:58
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From version < 4.4 >
edited by Xiaoling
on 2022/05/12 10:45
To version < 1.11 >
edited by Xiaoling
on 2022/05/12 10:07
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... ... @@ -10,7 +10,6 @@
10 10  
11 11  Connection
12 12  
13 -
14 14  [[image:https://wiki.dragino.com/images/thumb/f/f2/RS485_02.png/600px-RS485_02.png||height="743" width="528"]](% style="display:none" %)
15 15  
16 16  Connection
... ... @@ -29,7 +29,6 @@
29 29  
30 30  Connection
31 31  
32 -
33 33  [[image:https://wiki.dragino.com/images/thumb/5/5f/RS485_02_2.png/600px-RS485_02_2.png||height="337" width="600"]]
34 34  
35 35  Connection
... ... @@ -53,37 +53,24 @@
53 53  
54 54  Connection1
55 55  
56 -(((
57 57  How to connect with Energy Meter：
58 -)))
59 59  
60 -(((
61 61  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.
62 -)))
63 63  
64 -(((
65 65  The RS485-LN can be powered by 7 ~~ 24V DC power source. Connection as below
66 -)))
67 67  
68 -(((
69 69  Power Source VIN to RS485-LN VIN+
70 -)))
71 71  
72 -(((
73 73  Power Source GND to RS485-LN VIN-
74 -)))
75 75  
76 -(((
77 77  Once there is power, the RS485-LN will be on.
78 -)))
79 79  
80 80  [[image:https://wiki.dragino.com/images/thumb/1/15/Meter2.jpg/600px-Meter2.jpg||height="433" width="577"]]
81 81  
82 82  Connection2
83 83  
70 +[[image:https://wiki.dragino.com/images/thumb/a/a5/Meter3.jpg/600px-Meter3.jpg||height="800" width="600"]]
84 84  
85 -[[image:https://wiki.dragino.com/images/thumb/a/a5/Meter3.jpg/600px-Meter3.jpg||height="712" width="534"]]
86 -
87 87  Connection3
88 88  
89 89  
... ... @@ -104,9 +104,7 @@
104 104  * 5th and 6th bytes: Number of registers to read
105 105  * 7th and 8th bytes: CRC16 checksum from bytes 1 to 6.
106 106  
107 -(((
108 108  How to parse the reading of the return command of the parameter：
109 -)))
110 110  
111 111  (% class="box infomessage" %)
112 112  (((
... ... @@ -134,11 +134,11 @@
134 134  
135 135  [[image:https://wiki.dragino.com/images/b/bc/AT_COMMAND1.png||height="358" width="456"]]
136 136  
137 -AT COMMAND
120 +**AT COMMAND**
138 138  
139 139  (% class="box infomessage" %)
140 140  (((
141 - AT+DATACUTx : This command defines how to handle the return from AT+COMMANDx, max reture length is 40 bytes. AT+DATACUTx=a,b,c
124 +AT+DATACUTx : This command defines how to handle the return from AT+COMMANDx, max reture length is 40 bytes. AT+DATACUTx=a,b,c
142 142  )))
143 143  
144 144  a: length for the return of AT+COMMAND
... ... @@ -163,53 +163,27 @@
163 163  
164 164  [[image:https://wiki.dragino.com/images/thumb/c/c2/AT_COMMAND3.png/600px-AT_COMMAND3.png||height="138" width="600"]]
165 165  
166 -(((
167 167  AT COMMAND
168 -)))
169 169  
170 -(((
171 -
172 -)))
173 -
174 -(((
175 175  **Example**: CMD1:Read current data with MODBUS command. address:0x03 AT+COMMAND1= 01 03 00 03 00 01,1
176 -)))
177 177  
178 -(((
179 179  RETURN1:01 03 02 00 02 39 85 00 00(return data)
180 -)))
181 181  
182 -(((
183 183  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.
184 -)))
185 185  
186 -(((
187 187  CMD2:Read voltage data with MODBUS command. address:0x00 AT+COMMAND2= 01 03 00 00 00 01,1
188 -)))
189 189  
190 -(((
191 191  RETURN2:01 03 02 08 DC BE 1D(return data)
192 -)))
193 193  
194 -(((
195 195  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.
196 -)))
197 197  
198 -(((
199 199  CMD3:Read total active energy data with MODBUS command. address:0x0031 AT+COMMAND3= 01 03 00 31 00 02,1
200 -)))
201 201  
202 -(((
203 203  RETURN3:01 03 04 00 00 00 44 FA 00(return data)
204 -)))
205 205  
206 -(((
207 207  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.
208 -)))
209 209  
210 -(((
211 211  Payload:01 00 02 39 85 08 DC 00 00 00 44
212 -)))
213 213  
214 214  [[image:https://wiki.dragino.com/images/thumb/9/9b/AT_COMMAND10.png/600px-AT_COMMAND10.png||height="278" width="600"]]
215 215  
... ... @@ -225,7 +225,7 @@
225 225  
226 226  ==== 1.3.3.2 via LoRaWAN DOWNLINK ====
227 227  
228 -[[image:image-20220512104358-3.png]]
185 +[[image:https://wiki.dragino.com/images/thumb/f/fc/DOWNLINK_METER1.png/600px-DOWNLINK_METER1.png||height="423" width="600"]]
229 229  
230 230  (((
231 231  DOWNLINK
... ... @@ -236,15 +236,12 @@
236 236  )))
237 237  
238 238  (((
239 -**Type Code 0xAF**
196 +Type Code 0xAF
240 240  )))
241 241  
242 242  (((
243 -(% class="box infomessage" %)
244 -(((
245 245  0xAF downlink command can be used to set AT+COMMANDx or AT+DATACUTx.
246 246  )))
247 -)))
248 248  
249 249  (((
250 250  Note: if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.
... ... @@ -309,7 +309,6 @@
309 309  
310 310  DOWNLINK
311 311  
312 -
313 313  [[image:https://wiki.dragino.com/images/thumb/a/a2/DOWNLINK_METER6.png/600px-DOWNLINK_METER6.png||height="365" width="600"]]
314 314  
315 315  DOWNLINK
... ... @@ -317,47 +317,30 @@
317 317  
318 318  === 1.3.4 How to configure and output commands for RS485 to USB ===
319 319  
320 -(((
321 321  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.
322 -)))
323 323  
324 -(((
325 325  First, connect the A+ and A- of the USB to the 485 A and 485 B of the energy meter.
326 -)))
327 327  
328 -(((
329 329  Open the serial port debugging, set the send and receive to HEX.
330 -)))
331 331  
332 -(((
333 333  Baud rate: 9600
334 -)))
335 335  
336 -(((
337 337  check digit: Even
338 -)))
339 339  
340 -[[image:https://wiki.dragino.com/images/thumb/8/8f/Usb_meter2.jpg/600px-Usb_meter2.jpg||height="725" width="544"]]
283 +[[image:https://wiki.dragino.com/images/thumb/8/8f/Usb_meter2.jpg/600px-Usb_meter2.jpg||height="800" width="600"]]
341 341  
342 342  USB
343 343  
287 +[[image:https://wiki.dragino.com/images/thumb/6/62/Usb_meter1.jpg/600px-Usb_meter1.jpg||height="800" width="600"]]
344 344  
345 -[[image:https://wiki.dragino.com/images/thumb/6/62/Usb_meter1.jpg/600px-Usb_meter1.jpg||height="728" width="546"]]
346 -
347 347  USB
348 348  
349 -
350 -(((
351 351  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.
352 -)))
353 353  
354 -(((
355 -**Example:**  input：01 03 00 31 00 02 95 c4
356 -)))
293 +Example:input：01 03 00 31 00 02 95 c4
357 357  
358 -(((
359 - output:01 03 04 00 00 00 42 7A 02
360 -)))
295 +{{{ output:01 03 04 00 00 00 42 7A 02
296 +}}}
361 361  
362 362  [[image:https://wiki.dragino.com/images/thumb/b/b3/Usb_meter3.jpg/600px-Usb_meter3.jpg||height="466" width="600"]]
363 363  
... ... @@ -367,37 +367,21 @@
367 367  
368 368  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.
369 369  
370 -(((
371 -(((
372 372  Set the device address according to the parameters in the appendix of the MODBUS communication protocol.
373 -)))
374 -)))
375 375  
376 376  [[image:https://wiki.dragino.com/images/thumb/1/1f/Double_meter3.png/600px-Double_meter3.png||alt="Double meter3.png" height="83" width="600"]]
377 377  
378 -**Example**:These two meters are examples of setting parameters and device addresses.
310 +Example:These two meters are examples of setting parameters and device addresses.
379 379  
380 -[[image:https://wiki.dragino.com/images/thumb/e/ee/Double_meter1.jpg/600px-Double_meter1.jpg||alt="Double meter1.jpg" height="737" width="553"]]
312 +[[image:https://wiki.dragino.com/images/thumb/e/ee/Double_meter1.jpg/600px-Double_meter1.jpg||alt="Double meter1.jpg" height="800" width="600"]]
381 381  
382 -[[image:https://wiki.dragino.com/images/thumb/7/72/Double_meter2.jpg/600px-Double_meter2.jpg||alt="Double meter2.jpg" height="733" width="550"]]
314 +[[image:https://wiki.dragino.com/images/thumb/7/72/Double_meter2.jpg/600px-Double_meter2.jpg||alt="Double meter2.jpg" height="800" width="600"]]
383 383  
384 -(((
385 -(((
386 386  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.
387 -)))
388 -)))
389 389  
390 -(((
391 -(((
392 392  We can use AT+CFGDEV to set the device address.
393 -)))
394 -)))
395 395  
396 -(((
397 -(((
398 398  We modify the device address 01 of the first energy meter to 02.
399 -)))
400 -)))
401 401  
402 402  [[image:https://wiki.dragino.com/images/6/6b/Double_meter4.png||alt="Double meter4.png" height="141" width="456"]]
403 403  
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