Last modified by Xiaoling on 2023/04/20 18:14
<
From version < 14.2 >
edited by Xiaoling
on 2022/05/31 10:07
To version < 1.6 >
edited by Xiaoling
on 2022/05/12 17:52
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... ... @@ -8,39 +8,33 @@
8 8  The Dragino LoRaWAN gateway can commuicate with LoRaWAN ABP End Node without the need of LoRaWAN server. It can be used in some cases such as:
9 9  
10 10  * No internet connection.
11 -* User wants to get data forward in gateway and forward to their server base on MQTT/HTTP, etc. (Combine ABP communication method and [[MQTT forward together>>MQTT Forward Instruction]]).
11 +* User wants to get data forward in gateway and forward to their server base on MQTT/HTTP, etc. (Combine ABP communication method and [[MQTT forward together>>url:https://wiki.dragino.com/index.php/MQTT_Forward_Instruction]]).
12 12  
13 -(((
14 -The basic of this feature is the decoding of (% style="color:red" %)**LoRaWAN ABP End Node**(%%). Requirements:
15 -)))
16 16  
14 +The basic of this feature is the decoding of LoRaWAN ABP End Node. Requirements:
15 +
17 17  1. LoRaWAN End Node in ABP mode. Make sure your end node works in this mode. End node most are default set to OTAA mode
18 18  1. LoRaWAN Gateway model: [[LPS8>>url:http://www.dragino.com/products/lora-lorawan-gateway/item/148-lps8.html]], [[LG308>>url:http://www.dragino.com/products/lora-lorawan-gateway/item/140-lg308.html]], [[DLOS8>>url:http://www.dragino.com/products/lora-lorawan-gateway/item/160-dlos8.html]] ,[[LIG16>>url:http://www.dragino.com/products/lora-lorawan-gateway/item/171-lig16.html]]
19 -1. Firmware version for below instruction:**[[(% style="color:purple" %)Since LG02_LG08~~-~~-build-v5.4.1593400722-20200629-1120>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_Gateway/LPS8/Firmware/Release/]](%%)**
18 +1. Firmware version for below instruction:[[Since LG02_LG08~~-~~-build-v5.4.1593400722-20200629-1120>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_Gateway/LPS8/Firmware/Release/]]
20 20  
21 21  
22 22  = 2. How it works =
23 23  
24 24  
25 -(% style="color:#037691" %)**Video Instruction**(%%): **[[https:~~/~~/youtu.be/ZBjXwmp7rwM>>url:https://youtu.be/ZBjXwmp7rwM]]**
24 +Video Instruction: [[https:~~/~~/youtu.be/ZBjXwmp7rwM>>url:https://youtu.be/ZBjXwmp7rwM]]
26 26  
27 -
28 28  Assume we have the LoRaWAN tracker LGT92 which works in ABP mode and US915 band. It has below keys:
29 29  
30 -(% class="box infomessage" %)
31 -(((
32 -AT+NWKSKEY=72 32 63 95 dd 8f e2 b2 13 66 e4 35 93 8f 55 df
28 +{{{AT+NWKSKEY=72 32 63 95 dd 8f e2 b2 13 66 e4 35 93 8f 55 df
33 33  AT+APPSKEY=b3 17 f8 14 7a 43 27 8a 6a 31 c4 47 3d 55 5d 33
34 34  AT+DADDR=2602111D
35 -)))
31 +}}}
36 36  
37 -(((
38 38  and we have the LG308 works and US915 band and support ABP decryption. User can input these keys in LG308 so the LG308 can communicate with LGT92.
39 -)))
40 40  
41 41  We need to input above keys in LG308 and enable ABP decryption.
42 42  
43 -[[image:image-20220527161119-1.png]]
37 +[[image:https://wiki.dragino.com/images/thumb/5/55/LG308_MQTT_1.png/600px-LG308_MQTT_1.png||height="329" width="600"]]
44 44  
45 45  Input the ABP keys in LG308
46 46  
... ... @@ -49,11 +49,9 @@
49 49  
50 50  Now when this End Node (Dev Addr=2602111D) send a uplink packet. When this packet arrive LG308, LG308 will decode it and put the decode data on the file /var/iot/channels/2602111D . So we have this data for further process with other applications in LG308.
51 51  
52 -(((
53 53  We can see the log of LG308 to know this packet arrive
54 -)))
55 55  
56 -[[image:image-20220527161149-2.png]]
48 +[[image:https://wiki.dragino.com/images/thumb/1/16/ABP_DECODE_2.png/600px-ABP_DECODE_2.png||height="205" width="600"]]
57 57  
58 58  LG308 log by "logread -f" command
59 59  
... ... @@ -60,66 +60,54 @@
60 60  
61 61  The data of End Node is stored in the file /var/iot/channels/2602111D. We can use hexdump command to check it.
62 62  
63 -(% class="box" %)
64 -(((
65 -root@dragino-1d25dc:~~# hexdump /var/iot/channels/2602111D
66 -0000000 (% style="color:#037691" %)**4646 4646 4646 3946 3030 3030 3030 3546**(%%)      ~-~-> Got RSSI and SNR    
67 -0000010 (% style="color:#037691" %)**cc0c 0b63 0266 017f ff7f ff00 **(%%) ~-~-> Payload
55 +{{{root@dragino-1d25dc:~# hexdump /var/iot/channels/2602111D
56 +0000000 4646 4646 4646 3946 3030 3030 3030 3546 --> Got RSSI and SNR
57 +0000010 cc0c 0b63 0266 017f ff7f ff00 --> Payload
68 68  000001c
69 -)))
59 +}}}
70 70  
71 71  * RSSI: 4646 4646 4646 3946 = 0xFFFF FF9F : So RSSI = (0xFFFF FF9F - 0x100000000) = -97
72 72  * SNR: 3030 3030 3030 3546 = 0x0000 005F = 95, need to divide 10 so SNR is 9.5
73 73  * Payload: 0xcc0c 0b63 0266 017f ff7f ff00
74 74  
75 -(% class="box" %)
76 -(((
77 -(% style="color:red" %)**Notice 1**(%%): The data file stored in LG308 for the end node is bin file. If the end node sends ASCII string to gateway, the output will as below:
78 -in LGT92, use (% style="color:#037691" %)**AT+SEND=12:hello world** (%%)to send ASCII string
79 -root@dragino-1d25dc:~~# hexdump /var/iot/channels/2602111D
65 +
66 +{{{Notice 1: The data file stored in LG308 for the end node is bin file. If the end node sends ASCII string to gateway, the output will as below:
67 +in LGT92, use AT+SEND=12:hello world to send ASCII string
68 +root@dragino-1d25dc:~# hexdump /var/iot/channels/2602111D
80 80  0000000 4646 4646 4646 3946 3030 3030 3030 3546
81 -0000010 6865 6c6c 6f20 776f 726c 6400      ~-~-> Got ASCII code "hello world"    
70 +0000010 6865 6c6c 6f20 776f 726c 6400 --> Got ASCII code "hello world"
82 82  000001c
83 -)))
72 +}}}
84 84  
85 -(% class="box" %)
86 -(((
87 -(% style="color:#037691" %)**Notice 2**(%%): The upstream payload length should match the LoRaWAN length requirement (max length depends on Frequency and DR), otherwise the gateway can't decode the payload.
88 -)))
74 +{{{Notice 2: The upstream payload length should match the LoRaWAN length requirement (max length depends on Frequency and DR), otherwise the gateway can't decode the payload.
75 +}}}
89 89  
90 -
91 91  === 2.2.1 Decode Method ===
92 92  
93 -The decode methods: (% style="color:#037691" %)**ASCII String, Decode_LHT65**(%%) doesn't affect how the sensor data is stored, they are to define how should the sensor data to be sent.
79 +The decode methods: ASCII String, Decode_LHT65 doesn't affect how the sensor data is stored, they are to define how should the sensor data to be sent.
94 94  
95 95  For example we have a LHT65 , works in ABP mode and gateway successful get the data, which are:
96 96  
97 -(% class="box" %)
98 -(((
99 -root@dragino-1baf44:~~# hexdump /var/iot/channels/01826108
83 +{{{root@dragino-1baf44:~# hexdump /var/iot/channels/01826108
100 100  0000000 4646 4646 4646 4537 3030 3030 3030 3438
101 -0000010 ccd1 7fff 7fff 017f ff7f ff00         
85 +0000010 ccd1 7fff 7fff 017f ff7f ff00
102 102  000001c
103 -)))
87 +}}}
104 104  
105 105  If we choose ASCII decoder, the MQTT process will send out with mqtt-data:
106 106  
107 -(% class="box" %)
108 -(((
109 -Sun Sep 27 04:33:16 2020 user.notice root: [IoT.MQTT]:pub_topic[-t]: dragino-1baf44/01826108/data
91 +{{{Sun Sep 27 04:33:16 2020 user.notice root: [IoT.MQTT]:pub_topic[-t]: dragino-1baf44/01826108/data
110 110  Sun Sep 27 04:33:16 2020 user.notice root: [IoT.MQTT]:decoder: ASCII
111 -Sun Sep 27 04:33:16 2020 user.notice root: [IoT.MQTT]:mqtt_data[-m]: (% style="color:#037691" %)**ffffffe700000048ccd17fff7fff017fff7fff00**
112 -)))
93 +Sun Sep 27 04:33:16 2020 user.notice root: [IoT.MQTT]:mqtt_data[-m]: ffffffe700000048ccd17fff7fff017fff7fff00
94 +}}}
113 113  
114 114  If we choose Decode_LHT65, the MQTT process will send out with mqtt-data
115 115  
116 -(% class="box" %)
117 -(((
118 -Sun Sep 27 04:36:45 2020 user.notice root: [IoT.MQTT]:pub_topic[-t]: dragino-1baf44/01826108/data
98 +{{{Sun Sep 27 04:36:45 2020 user.notice root: [IoT.MQTT]:pub_topic[-t]: dragino-1baf44/01826108/data
119 119  Sun Sep 27 04:36:45 2020 user.notice root: [IoT.MQTT]:decoder: Dragino_LHT65
120 -Sun Sep 27 04:36:45 2020 user.notice root: [IoT.MQTT]:mqtt_data[-m]:** (% style="color:#037691" %){"Hum_SHT":32.7,"BatV":3.281,"TempC_DS":32.9,
121 -"EXT":"Temperature Sensor","RSSI":-24,"TempC_SHT":85.0,"SNR":8.2,"ext_sensor":0}(%%)**
122 -)))
100 +Sun Sep 27 04:36:45 2020 user.notice root: [IoT.MQTT]:mqtt_data[-m]: {"Hum_SHT":32.7,"BatV":3.281,"TempC_DS":32.9,
101 +"EXT":"Temperature Sensor","RSSI":-24,"TempC_SHT":85.0,"SNR":8.2,"ext_sensor":0}
102 +}}}
123 123  
124 124  Above scripts are store in /etc/lora/decoder/. User can put their scripts here and select it in the UI.
125 125  
... ... @@ -146,7 +146,6 @@
146 146  * the last line return is what will be used for MQTT
147 147  * User can use other language ,not limited to Lua, just make sure the return is what you want to send.
148 148  
149 -
150 150  == 2.2 Downstream ==
151 151  
152 152  In LG308, we can create a file in the directory /var/iot/push for downstream purpose. We recommend using each command to generate this file. This file will be used for transmission and auto-deleted after used
... ... @@ -153,11 +153,12 @@
153 153  
154 154  The file should use below format:
155 155  
156 -(% style="color:#037691" %)**dev_addr,imme/time,txt/hex,payload**
157 157  
136 +dev_addr,imme/time,txt/hex,payload
137 +
158 158  Since fimware > Dragino-v2 lgw-5.4.1608518541 . Support more option
159 159  
160 -(% style="color:#037691" %)**dev_addr,imme/time,txt/hex,payload,txpw,txbw,SF,frequency,rxwindow**
140 +dev_addr,imme/time,txt/hex,payload,txpw,txbw,SF,frequency,rxwindow
161 161  
162 162  * dev_addr: Inptu the device address
163 163  * imme/time:
... ... @@ -177,13 +177,15 @@
177 177  * Frequency: Transmit Frequency: example: 923300000
178 178  * rxwindow: transmit on Rx1Window or Rx2Window.
179 179  
160 +
180 180  Completely exmaple:
181 181  
182 182  * Old version: echo 018193F4,imme,hex,0101 > /var/iot/push/test
183 183  * New version: echo 018193F4,imme,hex,0101,20,1,SF12,923300000,2 > /var/iot/push/test
184 184  
185 -(% style="color:#037691" %)**Downstream Frequency**
186 186  
167 +Downstream Frequency
168 +
187 187  The LG308 will use the RX2 window info to send the downstream payload, use the default LoRaWAN settings, as below:
188 188  
189 189  * EU868: 869.525Mhz, DR0(SF12BW125)
... ... @@ -195,33 +195,23 @@
195 195  * IN865: 866.55Mhz, SF10 BW125
196 196  * RU864: 869.1Mhz, SF12 BW125
197 197  
198 -(% style="color:#037691" %)**Examples:**
199 199  
200 -(% class="box" %)
201 -(((
202 -we can use echo command to create files in LG308 for downstream.
203 -root@dragino-1d25dc:~~# echo 2602111D,time,hex,12345678 > /var/iot/push/test
204 -)))
181 +Examples:
205 205  
206 -(% class="box" %)
207 -(((
208 -1) From logread -f of gateway, we can see it has been added as pedning.
209 -lora_pkt_fwd[4286]: INFO~~ [DNLK]Looking file : test
210 -lora_pkt_fwd[4286]: INFO~~ [DNLK]devaddr:2602111D, txmode:time, pdfm:hex, size:4, payload1:4Vx,payload_hex:77C1BB90
211 -lora_pkt_fwd[4286]: INFO~~ [DNLK] DNLINK PENDING!(1 elems).
212 -)))
183 +{{{we can use echo command to create files in LG308 for downstream.
184 +root@dragino-1d25dc:~# echo 2602111D,time,hex,12345678 > /var/iot/push/test
213 213  
214 -(% class="box" %)
215 -(((
216 -2) When there is an upstrea from end node, this downstream will be sent and shows:
186 +1) From logread -f of gateway, we can see it has been added as pedning.
187 +lora_pkt_fwd[4286]: INFO~ [DNLK]Looking file : test
188 +lora_pkt_fwd[4286]: INFO~ [DNLK]devaddr:2602111D, txmode:time, pdfm:hex, size:4, payload1:4Vx,payload_hex:77C1BB90
189 +lora_pkt_fwd[4286]: INFO~ [DNLK] DNLINK PENDING!(1 elems).
190 +
191 +2) When there is an upstrea from end node, this downstream will be sent and shows:
217 217  lora_pkt_fwd[4286]: INFO: tx_start_delay=1497 (1497.000000) - (1497, bw_delay=0.000000, notch_delay=0.000000)
218 218  lora_pkt_fwd[4286]: [LGWSEND]lgw_send done: count_us=3537314420, freq=923300000, size=17
219 -)))
220 220  
221 -(% class="box" %)
222 -(((
223 -3) and the end node will got:
224 -[5764825]~*~*~*~** UpLinkCounter= 98 ~*~*~*~**
195 +3) and the end node will got:
196 +[5764825]***** UpLinkCounter= 98 *****
225 225  [5764827]TX on freq 905300000 Hz at DR 0
226 226  Update Interval: 60000 ms
227 227  [5765202]txDone
... ... @@ -231,13 +231,11 @@
231 231  [5767501]rxDone
232 232  Rssi= -41
233 233  Receive data
234 -(% style="color:#037691" %)**2:12345678**  (%%) ~-~-> Hex
235 -)))
206 +2:12345678 --> Hex
207 +}}}
236 236  
237 -(% class="box" %)
238 -(((
239 -4) If we use the command "echo 2602111D,time,txt,12345678 > /var/iot/push/test" for downstream, the end node will got:
240 -[5955877]~*~*~*~** UpLinkCounter= 102 ~*~*~*~**
209 +{{{4) If we use the command "echo 2602111D,time,txt,12345678 > /var/iot/push/test" for downstream, the end node will got:
210 +[5955877]***** UpLinkCounter= 102 *****
241 241  [5955879]TX on freq 904100000 Hz at DR 0
242 242  Update Interval: 60000 ms
243 243  [5956254]txDone
... ... @@ -247,78 +247,71 @@
247 247  [5958595]rxDone
248 248  Rssi= -37
249 249  Receive data
250 -(% style="color:#037691" %)**2:3132333435363738**(%%) ~-~-> ASCII string "12345678"
251 -)))
220 +2:3132333435363738 --> ASCII string "12345678"
221 +}}}
252 252  
253 -
254 254  = 3. Example 1: Communicate with LT-22222-L =
255 255  
256 256  Script can be download from: [[Example Script 1>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_Gateway/LPS8/Firmware/customized_script/&file=talk_to_lt-22222-l_v0.1.sh]]
257 257  
258 -(% class="box" %)
259 -(((
260 -#!/bin/sh
227 +{{{#!/bin/sh
261 261  # This scripts shows how to use LPS8/LG308/DLOS8 to communicate with two LoRaWAN End Nodes, without the use of internet or LoRaWAN server
262 262  #
263 -# Hardware Prepare:
264 -# 1. LT-22222-L x 2, both are configured to work in
265 -#   a) Class C ;
266 -# b) ABP Mode ;
230 +# Hardware Prepare:
231 +# 1. LT-22222-L x 2, both are configured to work in
232 +# a) Class C ;
233 +# b) ABP Mode ;
267 267  # c) AT+Mod=1
268 -# 2. LPS8,
269 -#   a) Firmware version >
270 -#   b) Input the LT-22222-L keys in LPS so LPS8 can talk with them.
271 -#   c) Lorawan server choose built-in
272 -#   d) in Custom page, select custom script to point to this script. (put this script in /etc/iot/scripts directory)
235 +# 2. LPS8,
236 +# a) Firmware version >
237 +# b) Input the LT-22222-L keys in LPS so LPS8 can talk with them.
238 +# c) Lorawan server choose built-in
239 +# d) in Custom page, select custom script to point to this script. (put this script in /etc/iot/scripts directory)
240 +#
241 +# How it works?
242 +# a) Devices 1 sends a uplink payload to LPS8. LPS8 will get the DI1 and DI2 info from the payload
243 +# b) LPS8 will send a message to Device 2 to set the Device2 DO1 = Device1 DI1, and Device DO2 = Device DI2.
244 +# c) Device2 will change DO1 and DO2 to according to the message from LPS8, and send back a message to LPS8 with the its DO1
245 +# and DO2 value. LPS8 will ask Device1 to change its DO1 to same as Device 2, and change the DO2 to the same as Device 2.
246 +# ( The purpose of this step is to show that the Device2 has already do the change there).
247 +#
248 +# For example: If current status of Device1 and Device2 leds shows:
249 +# Device1: DI1: ON, DI2: ON , DO1: OFF, DO2: OFF
250 +# Device2: DI1: OFF, DI2: OFF , DO1: OFF, DO2: OFF
273 273  #
274 -# How it works?
275 -#   a) Devices 1 sends a uplink payload to LPS8. LPS8 will get the DI1 and DI2 info from the payload
276 -#   b) LPS8 will send a message to Device 2 to set the Device2 DO1 = Device1 DI1, and Device DO2 = Device DI2.
277 -#   c) Device2 will change DO1 and DO2 to according to the message from LPS8, and send back a message to LPS8 with the its DO1
278 -#   and DO2 value. LPS8 will ask Device1 to change its DO1 to same as Device 2, and change the DO2 to the same as Device 2.
279 -#   ( The purpose of this step is to show that the Device2 has already do the change there).
280 -#
281 -#  For example: If current status of Device1 and Device2 leds shows:
282 -#  Device1: DI1: ON, DI2: ON , DO1: OFF,  DO2: OFF
283 -#  Device2: DI1: OFF, DI2: OFF , DO1: OFF,  DO2: OFF
284 -#
285 -#  Step2  will cause below change:
286 -#  Device1: DI1: ON, DI2: ON , DO1: OFF,  DO2: OFF
287 -#  Device2: DI1: OFF, DI2: OFF , DO1: ON,  DO2: ON
288 -# 
289 -#  Step3 will cause below change:
290 -#  Device1: DI1: ON, DI2: ON , DO1: ON,  DO2: ON
291 -#  Device2: DI1: OFF, DI2: OFF , DO1: ON,  DO2: ON
292 -#  So if a person is in the Device 1 location, he can check if the DO LED match DI LEDs on Device 1 to confirm
293 -#  whether the Device 2 has been changed.
294 -)))
252 +# Step2 will cause below change:
253 +# Device1: DI1: ON, DI2: ON , DO1: OFF, DO2: OFF
254 +# Device2: DI1: OFF, DI2: OFF , DO1: ON, DO2: ON
255 +#
256 +# Step3 will cause below change:
257 +# Device1: DI1: ON, DI2: ON , DO1: ON, DO2: ON
258 +# Device2: DI1: OFF, DI2: OFF , DO1: ON, DO2: ON
259 +# So if a person is in the Device 1 location, he can check if the DO LED match DI LEDs on Device 1 to confirm
260 +# whether the Device 2 has been changed.}}}
295 295  
296 296  ~1. Input keys
297 297  
298 -[[image:image-20220527162450-3.png]]
264 +[[image:https://wiki.dragino.com/images/thumb/b/bf/LPS8_LT-22222_1.png/600px-LPS8_LT-22222_1.png||height="335" width="600"]]
299 299  
300 300  Input Keys in LPS8
301 301  
302 -
303 303  2. Make sure the LPS8 and LT use the same frequency bands, choose EU868 in this test.
304 304  
305 305  3. Choose Built-in server
306 306  
307 -[[image:image-20220527162518-4.png]]
272 +[[image:https://wiki.dragino.com/images/thumb/d/d7/LPS8_LT-22222_2.png/600px-LPS8_LT-22222_2.png||height="264" width="600"]]
308 308  
309 309  Choose Built-in server
310 310  
311 -
312 312  4. Run the script.
313 313  
314 -[[image:image-20220527162552-5.png]]
278 +[[image:https://wiki.dragino.com/images/thumb/3/39/LPS8_LT-22222_3.png/600px-LPS8_LT-22222_3.png||height="389" width="600"]]
315 315  
316 316  Run the script
317 317  
318 -
319 319  5. Output:
320 320  
321 -[[image:image-20220527162619-6.png]]
284 +[[image:https://wiki.dragino.com/images/thumb/f/fe/LPS8_LT-22222_4.png/600px-LPS8_LT-22222_4.png||height="433" width="600"]]
322 322  
323 323  Output from LPS8
324 324  
... ... @@ -325,7 +325,7 @@
325 325  
326 326  = 4. Example 2: Communicate to TCP Server =
327 327  
328 -[[image:image-20220527162648-7.png]]
291 +[[image:https://wiki.dragino.com/images/thumb/7/75/LPS8_TCP_0.png/600px-LPS8_TCP_0.png||height="370" width="600"]]
329 329  
330 330  Network Structure
331 331  
... ... @@ -333,29 +333,27 @@
333 333  Full instruction video inlcude how to write scripts to fit server needed is here:
334 334  
335 335  
336 -(% style="color:#037691" %)**Video Instruction**(%%): **[[https:~~/~~/youtu.be/-nevW6U2TsE>>url:https://youtu.be/-nevW6U2TsE]]**
299 +Video Instruction: [[https:~~/~~/youtu.be/-nevW6U2TsE>>url:https://youtu.be/-nevW6U2TsE]]
337 337  
338 338  
339 -(% style="color:red" %)**Note: Firmware version must be higher than lgw-5.4.1607519907**
302 +Note: Firmware version must be higher than lgw-5.4.1607519907
340 340  
341 341  Assume we already set up ABP keys in the gateway:
342 342  
343 -[[image:image-20220527162852-8.png]]
306 +[[image:https://wiki.dragino.com/images/thumb/b/bf/LPS8_LT-22222_1.png/600px-LPS8_LT-22222_1.png||height="335" width="600"]]
344 344  
345 345  Input Keys in LPS8
346 346  
347 -
348 348  run socket tool in PC
349 349  
350 -[[image:image-20220527163028-9.png]]
312 +[[image:https://wiki.dragino.com/images/thumb/4/4b/LPS8_TCP_2.png/600px-LPS8_TCP_2.png||height="212" width="600"]]
351 351  
352 -
353 353  Socket tool
354 354  
355 355  
356 356  Input Server address and port
357 357  
358 -[[image:image-20220527163106-10.png]]
319 +[[image:https://wiki.dragino.com/images/thumb/c/c6/LPS8_TCP_3.png/600px-LPS8_TCP_3.png||height="306" width="600"]]
359 359  
360 360  Input Server address and port
361 361  
... ... @@ -362,7 +362,7 @@
362 362  
363 363  See value receive in socket tool. :
364 364  
365 -[[image:image-20220527163144-11.png]]
326 +[[image:https://wiki.dragino.com/images/thumb/2/20/LPS8_TCP_4.png/600px-LPS8_TCP_4.png||height="219" width="600"]]
366 366  
367 367  value receive in socket tool
368 368  
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