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94	94	Connection2
95	95
96	96
	97	+[[image:image-20220527092555-7.png]]
97	97
98	98	Connection3
99	99
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102	102
103	103	If the user needs to read the parameters of the electric energy meter and use the modbus command,please refer to the appendix of the MODBUS communication protocol in the user manual of the energy meter.
104	104
105		-[[image:https://wiki.dragino.com/images/thumb/3/35/Meter4.png/600px-Meter4.png||alt="Meter4.png" height="193" width="600"]]
	106	+[[image:image-20220527092629-8.png]]
106	106
	108	+
107	107	(% class="box infomessage" %)
108	108	(((
109		-Example:AT+COMMAND1=01 03 00 00 00 01 84 0A
	111	+**Example:** AT+COMMAND1=01 03 00 00 00 01 84 0A
110	110	)))
111	111
112	112	* The first byte : slave address code (=001～247)
...	...	@@ -121,7 +121,7 @@
121	121
122	122	(% class="box infomessage" %)
123	123	(((
124		-Example:RETURN1：01 03 02 08 FD 7E 05
	126	+**Example:** RETURN1：01 03 02 08 FD 7E 05
125	125	)))
126	126
127	127	* The first byte ARD: slave address code (=001～254)
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131	131	* The 6th and 7th bytes: CRC16 checksum
132	132	* 08 FD is register data. Use short integer 16 bits to convert to decimal, get 2301, then 230.1V is the voltage.
133	133
	136	+(% class="wikigeneratedid" %)
	137	+(((
	138	+
	139	+)))
	140	+
134	134	=== 1.3.3 How to configure RS485-LN and parse output commands ===
135	135
136	136	RS485-LN provides two configuration methods: AT COMMAND and DOWNLINK.
137	137
	145	+
138	138	==== 1.3.3.1 via AT COMMAND: ====
139	139
140	140	First, we can use **AT+CFGDEV** to get the return value, and we can also judge whether the input parameters are correct.
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143	143	If the configured parameters and commands are incorrect, the return value is not obtained.
144	144	)))
145	145
146		-[[image:https://wiki.dragino.com/images/b/bc/AT_COMMAND1.png||height="358" width="456"]]
	154	+[[image:image-20220527092748-9.png]]
147	147
148	148	AT COMMAND
149	149
	158	+
150	150	(% class="box infomessage" %)
151	151	(((
152	152	AT+DATACUTx : This command defines how to handle the return from AT+COMMANDx, max reture length is 40 bytes. AT+DATACUTx=a,b,c
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158	158
159	159	c: define the position for valid value.
160	160
161		-[[image:https://wiki.dragino.com/images/7/7d/AT_COMMAND2.png||height="278" width="477"]]
	170	+[[image:image-20220527092936-10.png]]
162	162
163	163	AT COMMAND
164	164
	174	+
165	165	PAYLOAD is available after the valid value is intercepted.
166	166
167	167
168		-[[image:https://wiki.dragino.com/images/3/3a/AT_COMMAND4.png||height="219" width="576"]]
	178	+[[image:image-20220527093059-11.png]]
169	169
170	170	AT COMMAND
171	171
	182	+
172	172	You can get configured PAYLOAD on TTN.
173	173
	185	+[[image:image-20220527093133-12.png]]
174	174
175		-[[image:https://wiki.dragino.com/images/thumb/c/c2/AT_COMMAND3.png/600px-AT_COMMAND3.png||height="138" width="600"]]
176		-
177	177	(((
178	178	AT COMMAND
179	179	)))
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222	222	Payload:01 00 02 39 85 08 DC 00 00 00 44
223	223	)))
224	224
225		-[[image:https://wiki.dragino.com/images/thumb/9/9b/AT_COMMAND10.png/600px-AT_COMMAND10.png||height="278" width="600"]]
	235	+[[image:image-20220527093204-13.png]]
226	226
227	227	AT COMMAND
228	228
	239	+
229	229	01 is device address,00 02 is the current, 08 DC is the voltage,00 00 00 44 is the total active energy.
230	230
	242	+[[image:image-20220527093251-14.png]]
231	231
232		-[[~[~[image:https://wiki.dragino.com/images/thumb/b/b8/AT_COMMAND11.png/600px-AT_COMMAND11.png~|~|height="271" width="600"~]~]>>url:https://wiki.dragino.com/index.php/File:AT_COMMAND11.png]]
233		-
234	234	AT COMMAND
235	235
236	236

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