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11	11	Connection
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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" %)
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16	16	Connection
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30	30	Connection
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33	33	[[image:https://wiki.dragino.com/images/thumb/5/5f/RS485_02_2.png/600px-RS485_02_2.png||height="337" width="600"]]
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35	35	Connection
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70	70	Connection2
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73		-[[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"]]
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75	75	Connection3
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156	156	)))
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158	158	(((
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163	163	**Example**: CMD1:Read current data with MODBUS command. address:0x03 AT+COMMAND1= 01 03 00 03 00 01,1
164	164	)))
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295	295	DOWNLINK
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297		-
298	298	[[image:https://wiki.dragino.com/images/thumb/a/a2/DOWNLINK_METER6.png/600px-DOWNLINK_METER6.png||height="365" width="600"]]
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300	300	DOWNLINK
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302	302
303	303	=== 1.3.4 How to configure and output commands for RS485 to USB ===
304	304
305		-(((
306	306	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.
307		-)))
308	308
309		-(((
310	310	First, connect the A+ and A- of the USB to the 485 A and 485 B of the energy meter.
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312	312
313		-(((
314	314	Open the serial port debugging, set the send and receive to HEX.
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317		-(((
318	318	Baud rate: 9600
319		-)))
320	320
321		-(((
322	322	check digit: Even
323		-)))
324	324
325		-[[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"]]
326	326
327	327	USB
328	328
	312	+[[image:https://wiki.dragino.com/images/thumb/6/62/Usb_meter1.jpg/600px-Usb_meter1.jpg||height="800" width="600"]]
329	329
330		-[[image:https://wiki.dragino.com/images/thumb/6/62/Usb_meter1.jpg/600px-Usb_meter1.jpg||height="728" width="546"]]
331		-
332	332	USB
333	333
334		-
335		-(((
336	336	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.
337		-)))
338	338
339		-(((
340		-**Example:**  input：01 03 00 31 00 02 95 c4
341		-)))
	318	+Example:input：01 03 00 31 00 02 95 c4
342	342
343		-(((
344		- output:01 03 04 00 00 00 42 7A 02
345		-)))
	320	+{{{ output:01 03 04 00 00 00 42 7A 02
	321	+}}}
346	346
347	347	[[image:https://wiki.dragino.com/images/thumb/b/b3/Usb_meter3.jpg/600px-Usb_meter3.jpg||height="466" width="600"]]
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353	353	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.
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355		-(((
356		-(((
357	357	Set the device address according to the parameters in the appendix of the MODBUS communication protocol.
358		-)))
359		-)))
360	360
361	361	[[image:https://wiki.dragino.com/images/thumb/1/1f/Double_meter3.png/600px-Double_meter3.png||alt="Double meter3.png" height="83" width="600"]]
362	362
363		-**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.
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365		-[[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"]]
366	366
367		-[[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"]]
368	368
369		-(((
370		-(((
371	371	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.
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373		-)))
374	374
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376		-(((
377	377	We can use AT+CFGDEV to set the device address.
378		-)))
379		-)))
380	380
381		-(((
382		-(((
383	383	We modify the device address 01 of the first energy meter to 02.
384		-)))
385		-)))
386	386
387	387	[[image:https://wiki.dragino.com/images/6/6b/Double_meter4.png||alt="Double meter4.png" height="141" width="456"]]
388	388