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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
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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
...	...	@@ -70,7 +70,7 @@
70	70	Connection2
71	71
72	72
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"]]
74	74
75	75	Connection3
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...	...	@@ -294,7 +294,6 @@
294	294
295	295	DOWNLINK
296	296
297		-
298	298	[[image:https://wiki.dragino.com/images/thumb/a/a2/DOWNLINK_METER6.png/600px-DOWNLINK_METER6.png||height="365" width="600"]]
299	299
300	300	DOWNLINK
...	...	@@ -322,12 +322,12 @@
322	322	check digit: Even
323	323	)))
324	324
325		-[[image:https://wiki.dragino.com/images/thumb/8/8f/Usb_meter2.jpg/600px-Usb_meter2.jpg||height="725" width="544"]]
	322	+[[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
329	329
330		-[[image:https://wiki.dragino.com/images/thumb/6/62/Usb_meter1.jpg/600px-Usb_meter1.jpg||height="728" width="546"]]
	327	+[[image:https://wiki.dragino.com/images/thumb/6/62/Usb_meter1.jpg/600px-Usb_meter1.jpg||height="800" width="600"]]
331	331
332	332	USB
333	333
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352	352
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.
354	354
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.
	356	+Example:These two meters are examples of setting parameters and device addresses.
364	364
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"]]
	358	+[[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"]]
	360	+[[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.
372		-)))
373		-)))
374	374
375		-(((
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