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From version < 1.16 >
edited by Xiaoling
on 2022/05/12 10:19
To version < 20.2 >
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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.
... ... @@ -6,14 +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 -[[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  
19 +
20 +[[image:image-20220527091942-2.png]](% style="display:none" %)
21 +
15 15  Connection
16 16  
24 +
17 17  Related documents:
18 18  
19 19  * [[Solar Pump with Dragino>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/Relay_VFD/]] : System Structure
... ... @@ -20,21 +20,26 @@
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  
31 +
23 23  == 1.2 Example 2: Connect to Pulse Counter ==
24 24  
25 25  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:
26 26  
27 -[[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]]
28 28  
29 29  Connection
30 30  
31 -[[image:https://wiki.dragino.com/images/thumb/5/5f/RS485_02_2.png/600px-RS485_02_2.png||height="337" width="600"]]
32 32  
41 +[[image:image-20220527092146-4.png]]
42 +
33 33  Connection
34 34  
35 35  * [[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
36 36  * [[Dragino Solution in Farm>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/&file=Dragino%20on%20Farms.pptx]]
37 37  
48 +(% class="wikigeneratedid" %)
49 +== ==
50 +
38 38  == 1.3 Example3: Use RS485-LN with energy meters ==
39 39  
40 40  === 1.3.1 OverView ===
... ... @@ -47,28 +47,41 @@
47 47  This example describes a single-phase meter.This is the connection between the RS485-LN and the energy meter.
48 48  )))
49 49  
50 -[[image:https://wiki.dragino.com/images/thumb/f/f4/Meter1.jpg/600px-Meter1.jpg||height="726" width="545"]]
63 +[[image:image-20220527092419-5.png]]
51 51  
52 52  Connection1
53 53  
67 +
68 +(((
54 54  How to connect with Energy Meter：
70 +)))
55 55  
72 +(((
56 56  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 +)))
57 57  
76 +(((
58 58  The RS485-LN can be powered by 7 ~~ 24V DC power source. Connection as below
78 +)))
59 59  
80 +(((
60 60  Power Source VIN to RS485-LN VIN+
82 +)))
61 61  
84 +(((
62 62  Power Source GND to RS485-LN VIN-
86 +)))
63 63  
88 +(((
64 64  Once there is power, the RS485-LN will be on.
90 +)))
65 65  
66 -[[image:https://wiki.dragino.com/images/thumb/1/15/Meter2.jpg/600px-Meter2.jpg||height="433" width="577"]]
92 +[[image:image-20220527092514-6.png]]
67 67  
68 68  Connection2
69 69  
70 70  
71 -[[image:https://wiki.dragino.com/images/thumb/a/a5/Meter3.jpg/600px-Meter3.jpg||height="712" width="534"]]
97 +[[image:image-20220527092555-7.png]]
72 72  
73 73  Connection3
74 74  
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77 77  
78 78  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.
79 79  
80 -[[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]]
81 81  
108 +
82 82  (% class="box infomessage" %)
83 83  (((
84 -Example:AT+COMMAND1=01 03 00 00 00 01 84 0A
111 +**Example:** AT+COMMAND1=01 03 00 00 00 01 84 0A
85 85  )))
86 86  
87 87  * The first byte : slave address code (=001～247)
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96 96  
97 97  (% class="box infomessage" %)
98 98  (((
99 -Example:RETURN1：01 03 02 08 FD 7E 05
126 +**Example:** RETURN1：01 03 02 08 FD 7E 05
100 100  )))
101 101  
102 102  * The first byte ARD: slave address code (=001～254)
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106 106  * The 6th and 7th bytes: CRC16 checksum
107 107  * 08 FD is register data. Use short integer 16 bits to convert to decimal, get 2301, then 230.1V is the voltage.
108 108  
136 +(% class="wikigeneratedid" %)
137 +(((
138 +
139 +)))
140 +
109 109  === 1.3.3 How to configure RS485-LN and parse output commands ===
110 110  
111 111  RS485-LN provides two configuration methods: AT COMMAND and DOWNLINK.
112 112  
145 +
113 113  ==== 1.3.3.1 via AT COMMAND: ====
114 114  
115 115  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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118 118  If the configured parameters and commands are incorrect, the return value is not obtained.
119 119  )))
120 120  
121 -[[image:https://wiki.dragino.com/images/b/bc/AT_COMMAND1.png||height="358" width="456"]]
154 +[[image:image-20220527092748-9.png]]
122 122  
123 123  AT COMMAND
124 124  
158 +
125 125  (% class="box infomessage" %)
126 126  (((
127 -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
128 128  )))
129 129  
130 130  a: length for the return of AT+COMMAND
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133 133  
134 134  c: define the position for valid value.
135 135  
136 -[[image:https://wiki.dragino.com/images/7/7d/AT_COMMAND2.png||height="278" width="477"]]
170 +[[image:image-20220527092936-10.png]]
137 137  
138 138  AT COMMAND
139 139  
174 +
140 140  PAYLOAD is available after the valid value is intercepted.
141 141  
142 142  
143 -[[image:https://wiki.dragino.com/images/3/3a/AT_COMMAND4.png||height="219" width="576"]]
178 +[[image:image-20220527093059-11.png]]
144 144  
145 145  AT COMMAND
146 146  
182 +
147 147  You can get configured PAYLOAD on TTN.
148 148  
185 +[[image:image-20220527093133-12.png]]
149 149  
150 -[[image:https://wiki.dragino.com/images/thumb/c/c2/AT_COMMAND3.png/600px-AT_COMMAND3.png||height="138" width="600"]]
151 -
152 152  (((
153 153  AT COMMAND
154 154  )))
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197 197  Payload:01 00 02 39 85 08 DC 00 00 00 44
198 198  )))
199 199  
200 -[[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]]
201 201  
202 202  AT COMMAND
203 203  
239 +
204 204  01 is device address,00 02 is the current, 08 DC is the voltage,00 00 00 44 is the total active energy.
205 205  
242 +[[image:image-20220527093251-14.png]]
206 206  
207 -[[~[~[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]]
208 -
209 209  AT COMMAND
210 210  
211 211  
212 212  ==== 1.3.3.2 via LoRaWAN DOWNLINK ====
213 213  
214 -[[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]]
215 215  
216 216  (((
217 217  DOWNLINK
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222 222  )))
223 223  
224 224  (((
225 -Type Code 0xAF
260 +**Type Code 0xAF**
226 226  )))
227 227  
228 228  (((
264 +(% class="box infomessage" %)
265 +(((
229 229  0xAF downlink command can be used to set AT+COMMANDx or AT+DATACUTx.
230 230  )))
268 +)))
231 231  
232 232  (((
233 233  Note: if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.
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339 339  )))
340 340  
341 341  (((
342 - output:01 03 04 00 00 00 42 7A 02
380 + output：01 03 04 00 00 00 42 7A 02
343 343  )))
344 344  
345 345  [[image:https://wiki.dragino.com/images/thumb/b/b3/Usb_meter3.jpg/600px-Usb_meter3.jpg||height="466" width="600"]]
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