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3 3  
4 4  {{toc/}}
5 5  
6 -= 1. Introduction =
7 7  
7 +
8 +
9 +
10 +
11 += **1. Introduction** =
12 +
8 8  This article provide the examples for RS485-LN to connect to different type of RS485 sensors.
9 9  
10 10  
11 -== 1.1 Example 1: Connect to Leak relay and VFD ==
16 +== **1.1 Example 1: Connect to Leak relay and VFD** ==
12 12  
13 13  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 Relay and VFD and communicate with Mobile. The structure is like below:
14 14  
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29 29  * [[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.
30 30  * [[Video Demo>>url:https://www.youtube.com/watch?v=TAFZ5eaf-MY&t=6s&ab_channel=XavierFlorensaBerenguer]]
31 31  
32 -== 1.2 Example 2: Connect to Pulse Counter ==
33 33  
38 +
39 +== **1.2 Example 2: Connect to Pulse Counter** ==
40 +
34 34  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:
35 35  
36 36  [[image:image-20220527092058-3.png]]
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38 38  Connection
39 39  
40 40  
48 +
41 41  [[image:image-20220527092146-4.png]]
42 42  
43 43  Connection
44 44  
53 +
45 45  * [[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
46 46  * [[Dragino Solution in Farm>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/&file=Dragino%20on%20Farms.pptx]]
47 47  
48 48  == ==
49 49  
50 -== 1.3 Example3: Use RS485-LN with energy meters ==
59 +== **1.3 Example3: Use RS485-LN with energy meters** ==
51 51  
52 -=== 1.3.1 OverView ===
61 +=== **1.3.1 OverView** ===
53 53  
54 54  (((
55 55  **Note**：The specifications of each energy meter are different, please refer to your own energy meter specifications.
... ... @@ -64,6 +64,7 @@
64 64  Connection1
65 65  
66 66  
76 +
67 67  (((
68 68  How to connect with Energy Meter：
69 69  )))
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93 93  Connection2
94 94  
95 95  
106 +
96 96  [[image:image-20220527092555-7.png]]
97 97  
98 98  Connection3
99 99  
100 100  
101 -=== 1.3.2 How to use the parameters of the energy meter and MODBUS commands ===
112 +=== **1.3.2 How to use the parameters of the energy meter and MODBUS commands** ===
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  
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137 137  
138 138  )))
139 139  
140 -=== 1.3.3 How to configure RS485-LN and parse output commands ===
151 +=== **1.3.3 How to configure RS485-LN and parse output commands** ===
141 141  
142 142  RS485-LN provides two configuration methods: AT COMMAND and DOWNLINK.
143 143  
144 144  
145 -==== 1.3.3.1 via AT COMMAND: ====
156 +==== **1.3.3.1 via AT COMMAND:** ====
146 146  
147 147  First, we can use **AT+CFGDEV** to get the return value, and we can also judge whether the input parameters are correct.
148 148  
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160 160   AT+DATACUTx : This command defines how to handle the return from AT+COMMANDx, max reture length is 40 bytes. AT+DATACUTx=a,b,c
161 161  )))
162 162  
163 -a: length for the return of AT+COMMAND
174 +a:  length for the return of AT+COMMAND
164 164  
165 -b:1: grab valid value by byte, max 6 bytes. 2: grab valid value by bytes section, max 3 sections.
176 +b: 1: grab valid value by byte, max 6 bytes;  2: grab valid value by bytes section, max 3 sections.
166 166  
167 -c: define the position for valid value.
178 +c:  define the position for valid value.
168 168  
169 169  [[image:image-20220527092936-10.png]]
170 170  
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171 171  AT COMMAND
172 172  
173 173  
185 +
174 174  PAYLOAD is available after the valid value is intercepted.
175 175  
176 176  
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179 179  AT COMMAND
180 180  
181 181  
194 +
182 182  You can get configured PAYLOAD on TTN.
183 183  
184 184  [[image:image-20220527093133-12.png]]
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244 244  
245 245  (% style="color:#4f81bd" %)**01 is device address,00 02 is the current, 08 DC is the voltage,00 00 00 44 is the total active energy.**
246 246  
260 +
261 +
247 247  [[image:image-20220527093251-14.png]]
248 248  
249 249  AT COMMAND
250 250  
251 251  
252 -==== 1.3.3.2 via LoRaWAN DOWNLINK ====
267 +==== **1.3.3.2 via LoRaWAN DOWNLINK** ====
253 253  
254 254  [[image:image-20220527093358-15.png]]
255 255  
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309 309  )))
310 310  
311 311  (((
327 +
328 +
312 312  (% style="color:#4f81bd" %)**Example:**
313 313  )))
314 314  
... ... @@ -321,27 +321,31 @@
321 321  DOWNLINK
322 322  
323 323  
341 +
324 324  [[image:image-20220527093508-17.png]]
325 325  
326 326  DOWNLINK
327 327  
328 328  
347 +
329 329  [[image:image-20220527093530-18.png]]
330 330  
331 331  DOWNLINK
332 332  
333 333  
353 +
334 334  [[image:image-20220527093607-19.png]]
335 335  
336 336  DOWNLINK
337 337  
338 338  
359 +
339 339  [[image:image-20220527093628-20.png]]
340 340  
341 341  DOWNLINK
342 342  
343 343  
344 -=== 1.3.4 How to configure and output commands for RS485 to USB ===
365 +=== **1.3.4 How to configure and output commands for RS485 to USB** ===
345 345  
346 346  (((
347 347  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.
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368 368  USB
369 369  
370 370  
392 +
371 371  [[image:image-20220527093747-22.png]]
372 372  
373 373  USB
374 374  
375 375  
398 +
376 376  (((
377 377  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.
378 378  )))
... ... @@ -390,7 +390,7 @@
390 390  USB
391 391  
392 392  
393 -=== 1.3.5 How to configure multiple devices and modify device addresses ===
416 +=== **1.3.5 How to configure multiple devices and modify device addresses** ===
394 394  
395 395  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.
396 396  
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484 484  
485 485  * [[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
486 486  
487 -
488 488  == 1.6 Example 6:CEM C31 485-T1-MID Energy Meter with RS485-LN ==
489 489  
490 490  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:
image-20220601142044-1.png
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