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68	68	Connection2
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71		-[[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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73	73	Connection3
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154	154	)))
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156	156	(((
157		-
158		-)))
159		-
160		-(((
161	161	**Example**: CMD1:Read current data with MODBUS command. address:0x03 AT+COMMAND1= 01 03 00 03 00 01,1
162	162	)))
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292	292
293	293	DOWNLINK
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295		-
296	296	[[image:https://wiki.dragino.com/images/thumb/a/a2/DOWNLINK_METER6.png/600px-DOWNLINK_METER6.png||height="365" width="600"]]
297	297
298	298	DOWNLINK
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300	300
301	301	=== 1.3.4 How to configure and output commands for RS485 to USB ===
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303		-(((
304	304	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		-)))
306	306
307		-(((
308	308	First, connect the A+ and A- of the USB to the 485 A and 485 B of the energy meter.
309		-)))
310	310
311		-(((
312	312	Open the serial port debugging, set the send and receive to HEX.
313		-)))
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315		-(((
316	316	Baud rate: 9600
317		-)))
318	318
319		-(((
320	320	check digit: Even
321		-)))
322	322
323		-[[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"]]
324	324
325	325	USB
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	312	+[[image:https://wiki.dragino.com/images/thumb/6/62/Usb_meter1.jpg/600px-Usb_meter1.jpg||height="800" width="600"]]
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328		-[[image:https://wiki.dragino.com/images/thumb/6/62/Usb_meter1.jpg/600px-Usb_meter1.jpg||height="728" width="546"]]
329		-
330	330	USB
331	331
332		-
333		-(((
334	334	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		-)))
336	336
337		-(((
338		-**Example:**  input：01 03 00 31 00 02 95 c4
339		-)))
	318	+Example:input：01 03 00 31 00 02 95 c4
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341		-(((
342		- output:01 03 04 00 00 00 42 7A 02
343		-)))
	320	+{{{ output:01 03 04 00 00 00 42 7A 02
	321	+}}}
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345	345	[[image:https://wiki.dragino.com/images/thumb/b/b3/Usb_meter3.jpg/600px-Usb_meter3.jpg||height="466" width="600"]]
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351	351	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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353		-(((
354		-(((
355	355	Set the device address according to the parameters in the appendix of the MODBUS communication protocol.
356		-)))
357		-)))
358	358
359	359	[[image:https://wiki.dragino.com/images/thumb/1/1f/Double_meter3.png/600px-Double_meter3.png||alt="Double meter3.png" height="83" width="600"]]
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363	363	[[image:https://wiki.dragino.com/images/thumb/e/ee/Double_meter1.jpg/600px-Double_meter1.jpg||alt="Double meter1.jpg" height="800" width="600"]]
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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"]]
	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"]]
366	366
367		-(((
368	368	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.
369		-)))
370	370
371		-(((
372	372	We can use AT+CFGDEV to set the device address.
373		-)))
374	374
375		-(((
376	376	We modify the device address 01 of the first energy meter to 02.
377		-)))
378	378
379	379	[[image:https://wiki.dragino.com/images/6/6b/Double_meter4.png||alt="Double meter4.png" height="141" width="456"]]
380	380