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Summary

Details

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1 +(% class="wikigeneratedid" %)
2 + **Contents:**
3 +
4 +{{toc/}}
5 +
1 1  = 1. Introduction =
2 2  
3 3  This article provide the examples for RS485-LN to connect to different type of RS485 sensors.
... ... @@ -6,15 +6,17 @@
6 6  
7 7  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:
8 8  
9 -[[image:https://wiki.dragino.com/images/thumb/5/5c/RS485_01.png/600px-RS485_01.png||height="297" width="534"]]
14 +[[image:image-20220527091852-1.png]]
10 10  
11 11  Connection
12 12  
13 13  
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  
20 +[[image:image-20220527091942-2.png]](% style="display:none" %)
21 +
16 16  Connection
17 17  
24 +
18 18  Related documents:
19 19  
20 20  * [[Solar Pump with Dragino>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/Relay_VFD/]] : System Structure
... ... @@ -21,16 +21,17 @@
21 21  * [[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.
22 22  * [[Video Demo>>url:https://www.youtube.com/watch?v=TAFZ5eaf-MY&t=6s&ab_channel=XavierFlorensaBerenguer]]
23 23  
31 +
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:
27 27  
28 -[[image:https://wiki.dragino.com/images/thumb/3/34/RS485_02_1.png/600px-RS485_02_1.png||height="364" width="600"]]
36 +[[image:image-20220527092058-3.png]]
29 29  
30 30  Connection
31 31  
32 32  
33 -[[image:https://wiki.dragino.com/images/thumb/5/5f/RS485_02_2.png/600px-RS485_02_2.png||height="337" width="600"]]
41 +[[image:image-20220527092146-4.png]]
34 34  
35 35  Connection
36 36  
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37 37  * [[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
38 38  * [[Dragino Solution in Farm>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/&file=Dragino%20on%20Farms.pptx]]
39 39  
48 +(% class="wikigeneratedid" %)
49 +== ==
50 +
40 40  == 1.3 Example3: Use RS485-LN with energy meters ==
41 41  
42 42  === 1.3.1 OverView ===
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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="726" width="545"]]
63 +[[image:image-20220527092419-5.png]]
53 53  
54 54  Connection1
55 55  
67 +
68 +(((
56 56  How to connect with Energy Meter：
70 +)))
57 57  
72 +(((
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.
74 +)))
59 59  
76 +(((
60 60  The RS485-LN can be powered by 7 ~~ 24V DC power source. Connection as below
78 +)))
61 61  
80 +(((
62 62  Power Source VIN to RS485-LN VIN+
82 +)))
63 63  
84 +(((
64 64  Power Source GND to RS485-LN VIN-
86 +)))
65 65  
88 +(((
66 66  Once there is power, the RS485-LN will be on.
90 +)))
67 67  
68 -[[image:https://wiki.dragino.com/images/thumb/1/15/Meter2.jpg/600px-Meter2.jpg||height="433" width="577"]]
92 +[[image:image-20220527092514-6.png]]
69 69  
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"]]
97 +[[image:image-20220527092555-7.png]]
74 74  
75 75  Connection3
76 76  
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79 79  
80 80  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.
81 81  
82 -[[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]]
83 83  
108 +
84 84  (% class="box infomessage" %)
85 85  (((
86 -Example:AT+COMMAND1=01 03 00 00 00 01 84 0A
111 +**Example:** AT+COMMAND1=01 03 00 00 00 01 84 0A
87 87  )))
88 88  
89 89  * The first byte : slave address code (=001～247)
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98 98  
99 99  (% class="box infomessage" %)
100 100  (((
101 -Example:RETURN1：01 03 02 08 FD 7E 05
126 +**Example:** RETURN1：01 03 02 08 FD 7E 05
102 102  )))
103 103  
104 104  * The first byte ARD: slave address code (=001～254)
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108 108  * The 6th and 7th bytes: CRC16 checksum
109 109  * 08 FD is register data. Use short integer 16 bits to convert to decimal, get 2301, then 230.1V is the voltage.
110 110  
136 +(% class="wikigeneratedid" %)
137 +(((
138 +
139 +)))
140 +
111 111  === 1.3.3 How to configure RS485-LN and parse output commands ===
112 112  
113 113  RS485-LN provides two configuration methods: AT COMMAND and DOWNLINK.
114 114  
145 +
115 115  ==== 1.3.3.1 via AT COMMAND: ====
116 116  
117 117  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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120 120  If the configured parameters and commands are incorrect, the return value is not obtained.
121 121  )))
122 122  
123 -[[image:https://wiki.dragino.com/images/b/bc/AT_COMMAND1.png||height="358" width="456"]]
154 +[[image:image-20220527092748-9.png]]
124 124  
125 125  AT COMMAND
126 126  
158 +
127 127  (% class="box infomessage" %)
128 128  (((
129 -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 + AT+DATACUTx : This command defines how to handle the return from AT+COMMANDx, max reture length is 40 bytes. AT+DATACUTx=a,b,c
130 130  )))
131 131  
132 132  a: length for the return of AT+COMMAND
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135 135  
136 136  c: define the position for valid value.
137 137  
138 -[[image:https://wiki.dragino.com/images/7/7d/AT_COMMAND2.png||height="278" width="477"]]
170 +[[image:image-20220527092936-10.png]]
139 139  
140 140  AT COMMAND
141 141  
174 +
142 142  PAYLOAD is available after the valid value is intercepted.
143 143  
144 144  
145 -[[image:https://wiki.dragino.com/images/3/3a/AT_COMMAND4.png||height="219" width="576"]]
178 +[[image:image-20220527093059-11.png]]
146 146  
147 147  AT COMMAND
148 148  
182 +
149 149  You can get configured PAYLOAD on TTN.
150 150  
185 +[[image:image-20220527093133-12.png]]
151 151  
152 -[[image:https://wiki.dragino.com/images/thumb/c/c2/AT_COMMAND3.png/600px-AT_COMMAND3.png||height="138" width="600"]]
153 -
154 154  (((
155 155  AT COMMAND
156 156  )))
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199 199  Payload:01 00 02 39 85 08 DC 00 00 00 44
200 200  )))
201 201  
202 -[[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]]
203 203  
204 204  AT COMMAND
205 205  
239 +
206 206  01 is device address,00 02 is the current, 08 DC is the voltage,00 00 00 44 is the total active energy.
207 207  
242 +[[image:image-20220527093251-14.png]]
208 208  
209 -[[~[~[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]]
210 -
211 211  AT COMMAND
212 212  
213 213  
214 214  ==== 1.3.3.2 via LoRaWAN DOWNLINK ====
215 215  
216 -[[image:https://wiki.dragino.com/images/thumb/f/fc/DOWNLINK_METER1.png/600px-DOWNLINK_METER1.png||height="423" width="600"]]
249 +[[image:image-20220512104358-3.png]]
217 217  
218 218  (((
219 219  DOWNLINK
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224 224  )))
225 225  
226 226  (((
227 -Type Code 0xAF
260 +**Type Code 0xAF**
228 228  )))
229 229  
230 230  (((
264 +(% class="box infomessage" %)
265 +(((
231 231  0xAF downlink command can be used to set AT+COMMANDx or AT+DATACUTx.
232 232  )))
268 +)))
233 233  
234 234  (((
235 235  Note: if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.
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341 341  )))
342 342  
343 343  (((
344 - output:01 03 04 00 00 00 42 7A 02
380 + output：01 03 04 00 00 00 42 7A 02
345 345  )))
346 346  
347 347  [[image:https://wiki.dragino.com/images/thumb/b/b3/Usb_meter3.jpg/600px-Usb_meter3.jpg||height="466" width="600"]]
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