Last modified by Karry Zhuang on 2024/07/11 11:58
<
From version < 1.5 >
edited by Xiaoling
on 2022/05/12 09:53
To version < 3.1 >
edited by Xiaoling
on 2022/05/12 10:42
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... ... @@ -10,6 +10,7 @@
10 10  
11 11  Connection
12 12  
13 +
13 13  [[image:https://wiki.dragino.com/images/thumb/f/f2/RS485_02.png/600px-RS485_02.png||height="743" width="528"]](% style="display:none" %)
14 14  
15 15  Connection
... ... @@ -20,7 +20,6 @@
20 20  * [[Configure Manual>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/Relay_VFD/]] : Explanation on how to integrate to Node-red and to the Mobile Phone, and with link to the Github code.
21 21  * [[Video Demo>>url:https://www.youtube.com/watch?v=TAFZ5eaf-MY&t=6s&ab_channel=XavierFlorensaBerenguer]]
22 22  
23 -
24 24  == 1.2 Example 2: Connect to Pulse Counter ==
25 25  
26 26  This instruction is provided by Xavier Florensa Berenguer from [[NORIA GRUPO DE COMPRAS>>url:http://www.gruponovelec.com/]]. It is to show how to use RS485-LN to connect to Pulse Counter and communicate with Mobile. This example and example 2 compose the structure for a farm IoT solution. The structure is like below:
... ... @@ -29,6 +29,7 @@
29 29  
30 30  Connection
31 31  
32 +
32 32  [[image:https://wiki.dragino.com/images/thumb/5/5f/RS485_02_2.png/600px-RS485_02_2.png||height="337" width="600"]]
33 33  
34 34  Connection
... ... @@ -36,13 +36,12 @@
36 36  * [[Pickdata MIO40 water pulse counter to LoRa with Dragino RS485-LN>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/Pulse-Counter/]] : Configure Document
37 37  * [[Dragino Solution in Farm>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/&file=Dragino%20on%20Farms.pptx]]
38 38  
39 -
40 40  == 1.3 Example3: Use RS485-LN with energy meters ==
41 41  
42 42  === 1.3.1 OverView ===
43 43  
44 44  (((
45 -Note：The specifications of each energy meter are different, please refer to your own energy meter specifications.
45 +**Note**：The specifications of each energy meter are different, please refer to your own energy meter specifications.
46 46  )))
47 47  
48 48  (((
... ... @@ -49,40 +49,54 @@
49 49  This example describes a single-phase meter.This is the connection between the RS485-LN and the energy meter.
50 50  )))
51 51  
52 -[[image:https://wiki.dragino.com/images/thumb/f/f4/Meter1.jpg/600px-Meter1.jpg||height="800" width="600"]]
52 +[[image:https://wiki.dragino.com/images/thumb/f/f4/Meter1.jpg/600px-Meter1.jpg||height="726" width="545"]]
53 53  
54 54  Connection1
55 55  
56 +(((
56 56  How to connect with Energy Meter：
58 +)))
57 57  
60 +(((
58 58  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 +)))
59 59  
64 +(((
60 60  The RS485-LN can be powered by 7 ~~ 24V DC power source. Connection as below
66 +)))
61 61  
68 +(((
62 62  Power Source VIN to RS485-LN VIN+
70 +)))
63 63  
72 +(((
64 64  Power Source GND to RS485-LN VIN-
74 +)))
65 65  
76 +(((
66 66  Once there is power, the RS485-LN will be on.
78 +)))
67 67  
68 -[[image:https://wiki.dragino.com/images/thumb/1/15/Meter2.jpg/600px-Meter2.jpg||height="450" width="600"]]
80 +[[image:https://wiki.dragino.com/images/thumb/1/15/Meter2.jpg/600px-Meter2.jpg||height="433" width="577"]]
69 69  
70 70  Connection2
71 71  
72 -[[image:https://wiki.dragino.com/images/thumb/a/a5/Meter3.jpg/600px-Meter3.jpg||height="800" width="600"]]
73 73  
85 +[[image:https://wiki.dragino.com/images/thumb/a/a5/Meter3.jpg/600px-Meter3.jpg||height="712" width="534"]]
86 +
74 74  Connection3
75 75  
76 76  
77 77  === 1.3.2 How to use the parameters of the energy meter and MODBUS commands ===
78 78  
79 -If the user needs to read the parameters of the electric energy meter and use the modbus command,
92 +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.
80 80  
81 -please refer to the appendix of the MODBUS communication protocol in the user manual of the energy meter.
82 -
83 83  [[image:https://wiki.dragino.com/images/thumb/3/35/Meter4.png/600px-Meter4.png||alt="Meter4.png" height="193" width="600"]]
84 84  
96 +(% class="box infomessage" %)
97 +(((
85 85  Example:AT+COMMAND1=01 03 00 00 00 01 84 0A
99 +)))
86 86  
87 87  * The first byte : slave address code (=001～247)
88 88  * The second byte : read register value function code
... ... @@ -90,9 +90,14 @@
90 90  * 5th and 6th bytes: Number of registers to read
91 91  * 7th and 8th bytes: CRC16 checksum from bytes 1 to 6.
92 92  
107 +(((
93 93  How to parse the reading of the return command of the parameter：
109 +)))
94 94  
111 +(% class="box infomessage" %)
112 +(((
95 95  Example:RETURN1：01 03 02 08 FD 7E 05
114 +)))
96 96  
97 97  * The first byte ARD: slave address code (=001～254)
98 98  * The second byte: Return to read function code
... ... @@ -101,22 +101,26 @@
101 101  * The 6th and 7th bytes: CRC16 checksum
102 102  * 08 FD is register data. Use short integer 16 bits to convert to decimal, get 2301, then 230.1V is the voltage.
103 103  
104 -
105 105  === 1.3.3 How to configure RS485-LN and parse output commands ===
106 106  
107 107  RS485-LN provides two configuration methods: AT COMMAND and DOWNLINK.
108 108  
109 -==== via AT COMMAND: ====
127 +==== 1.3.3.1 via AT COMMAND: ====
110 110  
111 -First, we can use AT+CFGDEV to get the return value, and we can also judge whether the input parameters are correct.
129 +First, we can use **AT+CFGDEV** to get the return value, and we can also judge whether the input parameters are correct.
112 112  
131 +(((
113 113  If the configured parameters and commands are incorrect, the return value is not obtained.
133 +)))
114 114  
115 115  [[image:https://wiki.dragino.com/images/b/bc/AT_COMMAND1.png||height="358" width="456"]]
116 116  
117 117  AT COMMAND
118 118  
119 -AT+DATACUTx : This command defines how to handle the return from AT+COMMANDx, max reture length is 40 bytes. AT+DATACUTx=a,b,c
139 +(% class="box infomessage" %)
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
142 +)))
120 120  
121 121  a: length for the return of AT+COMMAND
122 122  
... ... @@ -130,6 +130,7 @@
130 130  
131 131  PAYLOAD is available after the valid value is intercepted.
132 132  
156 +
133 133  [[image:https://wiki.dragino.com/images/3/3a/AT_COMMAND4.png||height="219" width="576"]]
134 134  
135 135  AT COMMAND
... ... @@ -136,29 +136,56 @@
136 136  
137 137  You can get configured PAYLOAD on TTN.
138 138  
163 +
139 139  [[image:https://wiki.dragino.com/images/thumb/c/c2/AT_COMMAND3.png/600px-AT_COMMAND3.png||height="138" width="600"]]
140 140  
166 +(((
141 141  AT COMMAND
168 +)))
142 142  
143 -Example: CMD1:Read current data with MODBUS command. address:0x03 AT+COMMAND1= 01 03 00 03 00 01,1
170 +(((
171 +
172 +)))
144 144  
174 +(((
175 +**Example**: CMD1:Read current data with MODBUS command. address:0x03 AT+COMMAND1= 01 03 00 03 00 01,1
176 +)))
177 +
178 +(((
145 145  RETURN1:01 03 02 00 02 39 85 00 00(return data)
180 +)))
146 146  
182 +(((
147 147  AT+DATACUT1:9,1,4+5+6+7 Take the return value 00 02 39 85 as the valid value of reading current data and used to splice payload.
184 +)))
148 148  
186 +(((
149 149  CMD2:Read voltage data with MODBUS command. address:0x00 AT+COMMAND2= 01 03 00 00 00 01,1
188 +)))
150 150  
190 +(((
151 151  RETURN2:01 03 02 08 DC BE 1D(return data)
192 +)))
152 152  
194 +(((
153 153  AT+DATACUT2:7,1,4+5 Take the return value 08 DC as the valid value of reading voltage data and used to splice payload.
196 +)))
154 154  
198 +(((
155 155  CMD3:Read total active energy data with MODBUS command. address:0x0031 AT+COMMAND3= 01 03 00 31 00 02,1
200 +)))
156 156  
202 +(((
157 157  RETURN3:01 03 04 00 00 00 44 FA 00(return data)
204 +)))
158 158  
206 +(((
159 159  AT+DATACUT3:9,1,4+5+6+7 Take the return value 00 00 00 44 as the valid value of reading total active energy data and used to splice payload.
208 +)))
160 160  
210 +(((
161 161  Payload:01 00 02 39 85 08 DC 00 00 00 44
212 +)))
162 162  
163 163  [[image:https://wiki.dragino.com/images/thumb/9/9b/AT_COMMAND10.png/600px-AT_COMMAND10.png||height="278" width="600"]]
164 164  
... ... @@ -166,58 +166,96 @@
166 166  
167 167  01 is device address,00 02 is the current, 08 DC is the voltage,00 00 00 44 is the total active energy.
168 168  
220 +
169 169  [[~[~[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]]
170 170  
171 171  AT COMMAND
172 172  
173 -==== 1.3.3.1 via LoRaWAN DOWNLINK ====
174 174  
226 +==== 1.3.3.2 via LoRaWAN DOWNLINK ====
227 +
175 175  [[image:https://wiki.dragino.com/images/thumb/f/fc/DOWNLINK_METER1.png/600px-DOWNLINK_METER1.png||height="423" width="600"]]
176 176  
230 +(((
177 177  DOWNLINK
232 +)))
178 178  
234 +(((
235 +
236 +)))
237 +
238 +(((
179 179  Type Code 0xAF
240 +)))
180 180  
242 +(((
181 181  0xAF downlink command can be used to set AT+COMMANDx or AT+DATACUTx.
244 +)))
182 182  
246 +(((
183 183  Note: if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.
248 +)))
184 184  
250 +(((
185 185  Format: AF MM NN LL XX XX XX XX YY
252 +)))
186 186  
254 +(((
187 187  Where:
256 +)))
188 188  
258 +(((
189 189  MM: the ATCOMMAND or AT+DATACUT to be set. Value from 01 ~~ 0F,
260 +)))
190 190  
262 +(((
191 191  NN: 0: no CRC; 1: add CRC-16/MODBUS ; 2: set the AT+DATACUT value.
264 +)))
192 192  
266 +(((
193 193  LL: The length of AT+COMMAND or AT+DATACUT command
268 +)))
194 194  
270 +(((
195 195  XX XX XX XX: AT+COMMAND or AT+DATACUT command
272 +)))
196 196  
274 +(((
197 197  YY: If YY=0, RS485-LN will execute the downlink command without uplink; if YY=1, RS485-LN
276 +)))
198 198  
278 +(((
199 199  will execute an uplink after got this command.
280 +)))
200 200  
282 +(((
201 201  Example:
284 +)))
202 202  
286 +(((
203 203  AF 03 01 06 0A 05 00 04 00 01 00: Same as AT+COMMAND3=0A 05 00 04 00 01,1
288 +)))
204 204  
205 205  [[image:https://wiki.dragino.com/images/thumb/4/45/DOWNLINK_METER2.png/600px-DOWNLINK_METER2.png||height="208" width="600"]]
206 206  
207 207  DOWNLINK
208 208  
294 +
209 209  [[~[~[image:https://wiki.dragino.com/images/thumb/2/20/DOWNLINK_METER3.png/600px-DOWNLINK_METER3.png~|~|height="105" width="600"~]~]>>url:https://wiki.dragino.com/index.php/File:DOWNLINK_METER3.png]]
210 210  
211 211  DOWNLINK
212 212  
299 +
213 213  [[image:https://wiki.dragino.com/images/thumb/2/27/DOWNLINK_METER4.png/600px-DOWNLINK_METER4.png||height="210" width="600"]]
214 214  
215 215  DOWNLINK
216 216  
304 +
217 217  [[~[~[image:https://wiki.dragino.com/images/thumb/3/39/DOWNLINK_METER5.png/600px-DOWNLINK_METER5.png~|~|height="176" width="600"~]~]>>url:https://wiki.dragino.com/index.php/File:DOWNLINK_METER5.png]]
218 218  
219 219  DOWNLINK
220 220  
309 +
221 221  [[image:https://wiki.dragino.com/images/thumb/a/a2/DOWNLINK_METER6.png/600px-DOWNLINK_METER6.png||height="365" width="600"]]
222 222  
223 223  DOWNLINK
... ... @@ -225,30 +225,47 @@
225 225  
226 226  === 1.3.4 How to configure and output commands for RS485 to USB ===
227 227  
317 +(((
228 228  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 +)))
229 229  
321 +(((
230 230  First, connect the A+ and A- of the USB to the 485 A and 485 B of the energy meter.
323 +)))
231 231  
325 +(((
232 232  Open the serial port debugging, set the send and receive to HEX.
327 +)))
233 233  
329 +(((
234 234  Baud rate: 9600
331 +)))
235 235  
333 +(((
236 236  check digit: Even
335 +)))
237 237  
238 -[[image:https://wiki.dragino.com/images/thumb/8/8f/Usb_meter2.jpg/600px-Usb_meter2.jpg||height="800" width="600"]]
337 +[[image:https://wiki.dragino.com/images/thumb/8/8f/Usb_meter2.jpg/600px-Usb_meter2.jpg||height="725" width="544"]]
239 239  
240 240  USB
241 241  
242 -[[image:https://wiki.dragino.com/images/thumb/6/62/Usb_meter1.jpg/600px-Usb_meter1.jpg||height="800" width="600"]]
243 243  
342 +[[image:https://wiki.dragino.com/images/thumb/6/62/Usb_meter1.jpg/600px-Usb_meter1.jpg||height="728" width="546"]]
343 +
244 244  USB
245 245  
346 +
347 +(((
246 246  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 +)))
247 247  
248 -Example:input：01 03 00 31 00 02 95 c4
351 +(((
352 +**Example:**  input：01 03 00 31 00 02 95 c4
353 +)))
249 249  
250 -{{{ output:01 03 04 00 00 00 42 7A 02
251 -}}}
355 +(((
356 + output:01 03 04 00 00 00 42 7A 02
357 +)))
252 252  
253 253  [[image:https://wiki.dragino.com/images/thumb/b/b3/Usb_meter3.jpg/600px-Usb_meter3.jpg||height="466" width="600"]]
254 254  
... ... @@ -258,21 +258,37 @@
258 258  
259 259  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.
260 260  
367 +(((
368 +(((
261 261  Set the device address according to the parameters in the appendix of the MODBUS communication protocol.
370 +)))
371 +)))
262 262  
263 263  [[image:https://wiki.dragino.com/images/thumb/1/1f/Double_meter3.png/600px-Double_meter3.png||alt="Double meter3.png" height="83" width="600"]]
264 264  
265 -Example:These two meters are examples of setting parameters and device addresses.
375 +**Example**:These two meters are examples of setting parameters and device addresses.
266 266  
267 -[[image:https://wiki.dragino.com/images/thumb/e/ee/Double_meter1.jpg/600px-Double_meter1.jpg||alt="Double meter1.jpg" height="800" width="600"]]
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"]]
268 268  
269 -[[image:https://wiki.dragino.com/images/thumb/7/72/Double_meter2.jpg/600px-Double_meter2.jpg||alt="Double meter2.jpg" height="800" width="600"]]
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"]]
270 270  
381 +(((
382 +(((
271 271  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 +)))
272 272  
387 +(((
388 +(((
273 273  We can use AT+CFGDEV to set the device address.
390 +)))
391 +)))
274 274  
393 +(((
394 +(((
275 275  We modify the device address 01 of the first energy meter to 02.
396 +)))
397 +)))
276 276  
277 277  [[image:https://wiki.dragino.com/images/6/6b/Double_meter4.png||alt="Double meter4.png" height="141" width="456"]]
278 278  
... ... @@ -307,7 +307,6 @@
307 307  * 08 DF is the valid value of the meter with device address 02.
308 308  * 43 62 is the valid value of the meter with device address 01.
309 309  
310 -
311 311  == 1.4 Example 4: Circuit Breaker Remote Open Close ==
312 312  
313 313  This instruction is provided by Xavier Florensa Berenguer from [[NORIA GRUPO DE COMPRAS>>url:http://www.gruponovelec.com/]]. It is to show how to use RS485-LN to connect to SCHNEIDER SMART and Monitor and control your cabinet remotely with no wires and with Dragino RS485-LN LoRaWAN technology. The structure is like below:
... ... @@ -318,7 +318,6 @@
318 318  
319 319  * [[Circuit Breaker Remote Open Close>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/Circuit_Breaker_Remote_Open_Close/]] : Configure Documen
320 320  
321 -
322 322  == 1.5 Example 5: SEM Three Energy Meter with RS485-BL or RS485-LN ==
323 323  
324 324  This instruction is provided by Xavier Florensa Berenguer from [[NORIA GRUPO DE COMPRAS>>url:http://www.gruponovelec.com/]]. It is to show how to use RS485-BL to connect to SEM Three Energy Meter and send the data to mobile phone for remote minitor. The structure is like below:
... ... @@ -327,7 +327,6 @@
327 327  
328 328  * [[Connect to SEM Three>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/SEM_Three_Energy_Meter/&file=SEM%20three%20and%20Dragino%20RS485-LN%20v1.pdf]] : Configure Document for RS485-LN
329 329  
330 -
331 331  == 1.6 Example 6:CEM C31 485-T1-MID Energy Meter with RS485-LN ==
332 332  
333 333  This instruction is provided by Xavier Florensa Berenguer from [[NORIA GRUPO DE COMPRAS>>url:http://www.gruponovelec.com/]]. It is to show how to use RS485-LN to connect to CEM C31 485-T1-MID and send the data for remote minitor. The structure is like below:
... ... @@ -334,7 +334,6 @@
334 334  
335 335  * [[CEM C31 485-T1-MID>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/ELECTRICAL%20CABINET/&file=ELECTRICAL%20CABINET%20READINGS.pdf]] : Configure Document For RS485-LN
336 336  
337 -
338 338  == 1.7 Example 7:Schneider Electric PLC M221 with RS485-BL ==
339 339  
340 340  [[image:https://wiki.dragino.com/images/thumb/9/97/PLC_M221.png/600px-PLC_M221.png||height="353" width="600"]]
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