Last modified by Karry Zhuang on 2024/07/11 11:58
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From version < 1.11 >
edited by Xiaoling
on 2022/05/12 10:07
To version < 1.17 >
edited by Xiaoling
on 2022/05/12 10:21
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... ... @@ -67,8 +67,9 @@
67 67  
68 68  Connection2
69 69  
70 -[[image:https://wiki.dragino.com/images/thumb/a/a5/Meter3.jpg/600px-Meter3.jpg||height="800" width="600"]]
71 71  
71 +[[image:https://wiki.dragino.com/images/thumb/a/a5/Meter3.jpg/600px-Meter3.jpg||height="712" width="534"]]
72 +
72 72  Connection3
73 73  
74 74  
... ... @@ -89,7 +89,9 @@
89 89  * 5th and 6th bytes: Number of registers to read
90 90  * 7th and 8th bytes: CRC16 checksum from bytes 1 to 6.
91 91  
93 +(((
92 92  How to parse the reading of the return command of the parameter：
95 +)))
93 93  
94 94  (% class="box infomessage" %)
95 95  (((
... ... @@ -117,7 +117,7 @@
117 117  
118 118  [[image:https://wiki.dragino.com/images/b/bc/AT_COMMAND1.png||height="358" width="456"]]
119 119  
120 -**AT COMMAND**
123 +AT COMMAND
121 121  
122 122  (% class="box infomessage" %)
123 123  (((
... ... @@ -146,27 +146,53 @@
146 146  
147 147  [[image:https://wiki.dragino.com/images/thumb/c/c2/AT_COMMAND3.png/600px-AT_COMMAND3.png||height="138" width="600"]]
148 148  
152 +(((
149 149  AT COMMAND
154 +)))
150 150  
156 +(((
157 +
158 +)))
159 +
160 +(((
151 151  **Example**: CMD1:Read current data with MODBUS command. address:0x03 AT+COMMAND1= 01 03 00 03 00 01,1
162 +)))
152 152  
164 +(((
153 153  RETURN1:01 03 02 00 02 39 85 00 00(return data)
166 +)))
154 154  
168 +(((
155 155  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.
170 +)))
156 156  
172 +(((
157 157  CMD2:Read voltage data with MODBUS command. address:0x00 AT+COMMAND2= 01 03 00 00 00 01,1
174 +)))
158 158  
176 +(((
159 159  RETURN2:01 03 02 08 DC BE 1D(return data)
178 +)))
160 160  
180 +(((
161 161  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.
182 +)))
162 162  
184 +(((
163 163  CMD3:Read total active energy data with MODBUS command. address:0x0031 AT+COMMAND3= 01 03 00 31 00 02,1
186 +)))
164 164  
188 +(((
165 165  RETURN3:01 03 04 00 00 00 44 FA 00(return data)
190 +)))
166 166  
192 +(((
167 167  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.
194 +)))
168 168  
196 +(((
169 169  Payload:01 00 02 39 85 08 DC 00 00 00 44
198 +)))
170 170  
171 171  [[image:https://wiki.dragino.com/images/thumb/9/9b/AT_COMMAND10.png/600px-AT_COMMAND10.png||height="278" width="600"]]
172 172  
... ... @@ -263,6 +263,7 @@
263 263  
264 264  DOWNLINK
265 265  
295 +
266 266  [[image:https://wiki.dragino.com/images/thumb/a/a2/DOWNLINK_METER6.png/600px-DOWNLINK_METER6.png||height="365" width="600"]]
267 267  
268 268  DOWNLINK
... ... @@ -270,30 +270,47 @@
270 270  
271 271  === 1.3.4 How to configure and output commands for RS485 to USB ===
272 272  
303 +(((
273 273  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.
305 +)))
274 274  
307 +(((
275 275  First, connect the A+ and A- of the USB to the 485 A and 485 B of the energy meter.
309 +)))
276 276  
311 +(((
277 277  Open the serial port debugging, set the send and receive to HEX.
313 +)))
278 278  
315 +(((
279 279  Baud rate: 9600
317 +)))
280 280  
319 +(((
281 281  check digit: Even
321 +)))
282 282  
283 -[[image:https://wiki.dragino.com/images/thumb/8/8f/Usb_meter2.jpg/600px-Usb_meter2.jpg||height="800" width="600"]]
323 +[[image:https://wiki.dragino.com/images/thumb/8/8f/Usb_meter2.jpg/600px-Usb_meter2.jpg||height="725" width="544"]]
284 284  
285 285  USB
286 286  
287 -[[image:https://wiki.dragino.com/images/thumb/6/62/Usb_meter1.jpg/600px-Usb_meter1.jpg||height="800" width="600"]]
288 288  
328 +[[image:https://wiki.dragino.com/images/thumb/6/62/Usb_meter1.jpg/600px-Usb_meter1.jpg||height="728" width="546"]]
329 +
289 289  USB
290 290  
332 +
333 +(((
291 291  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.
335 +)))
292 292  
293 -Example:input：01 03 00 31 00 02 95 c4
337 +(((
338 +**Example:**  input：01 03 00 31 00 02 95 c4
339 +)))
294 294  
295 -{{{ output:01 03 04 00 00 00 42 7A 02
296 -}}}
341 +(((
342 + output:01 03 04 00 00 00 42 7A 02
343 +)))
297 297  
298 298  [[image:https://wiki.dragino.com/images/thumb/b/b3/Usb_meter3.jpg/600px-Usb_meter3.jpg||height="466" width="600"]]
299 299  
... ... @@ -303,21 +303,37 @@
303 303  
304 304  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.
305 305  
353 +(((
354 +(((
306 306  Set the device address according to the parameters in the appendix of the MODBUS communication protocol.
356 +)))
357 +)))
307 307  
308 308  [[image:https://wiki.dragino.com/images/thumb/1/1f/Double_meter3.png/600px-Double_meter3.png||alt="Double meter3.png" height="83" width="600"]]
309 309  
310 -Example:These two meters are examples of setting parameters and device addresses.
361 +**Example**:These two meters are examples of setting parameters and device addresses.
311 311  
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"]]
363 +[[image:https://wiki.dragino.com/images/thumb/e/ee/Double_meter1.jpg/600px-Double_meter1.jpg||alt="Double meter1.jpg" height="737" width="553"]]
313 313  
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"]]
365 +[[image:https://wiki.dragino.com/images/thumb/7/72/Double_meter2.jpg/600px-Double_meter2.jpg||alt="Double meter2.jpg" height="733" width="550"]]
315 315  
367 +(((
368 +(((
316 316  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.
370 +)))
371 +)))
317 317  
373 +(((
374 +(((
318 318  We can use AT+CFGDEV to set the device address.
376 +)))
377 +)))
319 319  
379 +(((
380 +(((
320 320  We modify the device address 01 of the first energy meter to 02.
382 +)))
383 +)))
321 321  
322 322  [[image:https://wiki.dragino.com/images/6/6b/Double_meter4.png||alt="Double meter4.png" height="141" width="456"]]
323 323  

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