Last modified by Karry Zhuang on 2024/07/11 11:58
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on 2022/05/12 10:43
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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
... ... @@ -53,29 +53,17 @@
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  
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82 82  Connection2
83 83  
84 84  
85 -[[image:https://wiki.dragino.com/images/thumb/a/a5/Meter3.jpg/600px-Meter3.jpg||height="712" width="534"]]
71 +[[image:https://wiki.dragino.com/images/thumb/a/a5/Meter3.jpg/600px-Meter3.jpg||height="763" width="573"]]
86 86  
87 87  Connection3
88 88  
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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
127 +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
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168 168  )))
169 169  
170 170  (((
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
176 176  )))
177 177  
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306 306  
307 307  DOWNLINK
308 308  
309 -
310 310  [[image:https://wiki.dragino.com/images/thumb/a/a2/DOWNLINK_METER6.png/600px-DOWNLINK_METER6.png||height="365" width="600"]]
311 311  
312 312  DOWNLINK
... ... @@ -314,47 +314,30 @@
314 314  
315 315  === 1.3.4 How to configure and output commands for RS485 to USB ===
316 316  
317 -(((
318 318  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.
319 -)))
320 320  
321 -(((
322 322  First, connect the A+ and A- of the USB to the 485 A and 485 B of the energy meter.
323 -)))
324 324  
325 -(((
326 326  Open the serial port debugging, set the send and receive to HEX.
327 -)))
328 328  
329 -(((
330 330  Baud rate: 9600
331 -)))
332 332  
333 -(((
334 334  check digit: Even
335 -)))
336 336  
337 -[[image:https://wiki.dragino.com/images/thumb/8/8f/Usb_meter2.jpg/600px-Usb_meter2.jpg||height="725" width="544"]]
308 +[[image:https://wiki.dragino.com/images/thumb/8/8f/Usb_meter2.jpg/600px-Usb_meter2.jpg||height="800" width="600"]]
338 338  
339 339  USB
340 340  
312 +[[image:https://wiki.dragino.com/images/thumb/6/62/Usb_meter1.jpg/600px-Usb_meter1.jpg||height="800" width="600"]]
341 341  
342 -[[image:https://wiki.dragino.com/images/thumb/6/62/Usb_meter1.jpg/600px-Usb_meter1.jpg||height="728" width="546"]]
343 -
344 344  USB
345 345  
346 -
347 -(((
348 348  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.
349 -)))
350 350  
351 -(((
352 -**Example:**  input：01 03 00 31 00 02 95 c4
353 -)))
318 +Example:input：01 03 00 31 00 02 95 c4
354 354  
355 -(((
356 - output:01 03 04 00 00 00 42 7A 02
357 -)))
320 +{{{ output:01 03 04 00 00 00 42 7A 02
321 +}}}
358 358  
359 359  [[image:https://wiki.dragino.com/images/thumb/b/b3/Usb_meter3.jpg/600px-Usb_meter3.jpg||height="466" width="600"]]
360 360  
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364 364  
365 365  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.
366 366  
367 -(((
368 -(((
369 369  Set the device address according to the parameters in the appendix of the MODBUS communication protocol.
370 -)))
371 -)))
372 372  
373 373  [[image:https://wiki.dragino.com/images/thumb/1/1f/Double_meter3.png/600px-Double_meter3.png||alt="Double meter3.png" height="83" width="600"]]
374 374  
375 -**Example**:These two meters are examples of setting parameters and device addresses.
335 +Example:These two meters are examples of setting parameters and device addresses.
376 376  
377 -[[image:https://wiki.dragino.com/images/thumb/e/ee/Double_meter1.jpg/600px-Double_meter1.jpg||alt="Double meter1.jpg" height="737" width="553"]]
337 +[[image:https://wiki.dragino.com/images/thumb/e/ee/Double_meter1.jpg/600px-Double_meter1.jpg||alt="Double meter1.jpg" height="800" width="600"]]
378 378  
379 -[[image:https://wiki.dragino.com/images/thumb/7/72/Double_meter2.jpg/600px-Double_meter2.jpg||alt="Double meter2.jpg" height="733" width="550"]]
339 +[[image:https://wiki.dragino.com/images/thumb/7/72/Double_meter2.jpg/600px-Double_meter2.jpg||alt="Double meter2.jpg" height="800" width="600"]]
380 380  
381 -(((
382 -(((
383 383  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.
384 -)))
385 -)))
386 386  
387 -(((
388 -(((
389 389  We can use AT+CFGDEV to set the device address.
390 -)))
391 -)))
392 392  
393 -(((
394 -(((
395 395  We modify the device address 01 of the first energy meter to 02.
396 -)))
397 -)))
398 398  
399 399  [[image:https://wiki.dragino.com/images/6/6b/Double_meter4.png||alt="Double meter4.png" height="141" width="456"]]
400 400  
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