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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
...	...	@@ -138,7 +138,7 @@
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
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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