Skip to Content
Last modified by Xiaoling on 2023/07/18 10:12
From version 170.16
edited by Xiaoling
on 2022/06/22 10:07
Change comment: There is no comment for this version
To version 170.18
edited by Xiaoling
on 2022/06/22 10:31
Change comment: There is no comment for this version

Summary

Details

Page properties
Content
... ... @@ -46,9 +46,9 @@
46 46  * Datalog feature
47 47  
48 48  
49 -
50 50  == 1.3 Specification ==
51 51  
51 +
52 52  **Built-in Temperature Sensor:**
53 53  
54 54  * Resolution: 0.01 °C
... ... @@ -71,7 +71,6 @@
71 71  * Operating Range: -55 °C ~~ 125 °C
72 72  
73 73  
74 -
75 75  = 2. Connect LHT65N to IoT Server =
76 76  
77 77  == 2.1 How does LHT65N work? ==
... ... @@ -85,26 +85,20 @@
85 85  
86 86  The LHT65N has two working modes:
87 87  
88 -(% _mstvisible="1" %)
89 89  * (% style="color:blue" %)**Deep Sleep Mode**(%%): LHT65N doesn’t have any LoRaWAN activation. This mode is used for storage and shipping to save battery life.
90 90  * (% style="color:blue" %)**Working Mode**(%%):  In this mode, LHT65N works as LoRaWAN Sensor mode to Join LoRaWAN network and send out the sensor data to the server. Between each sampling/tx/rx periodically, LHT65N will be in STOP mode (IDLE mode), in STOP mode, LHT65N has the same power consumption as Deep Sleep mode. 
91 91  
92 -(% _mstvisible="1" %)
93 -(((
94 -(% _msthash="506062" _msttexthash="6036823" _mstvisible="2" %)
95 95  The LHT65N is set in deep sleep mode by default; The ACT button on the front is to switch to different modes:
96 -)))
97 97  
98 -(% _mstvisible="1" %)
92 +
99 99  [[image:image-20220515123819-1.png||_mstalt="430742" _mstvisible="3" height="379" width="317"]]
100 100  
101 -(% _mstvisible="1" %)
102 102  [[image:image-20220525110604-2.png||_mstalt="427531" _mstvisible="3"]]
103 103  
104 104  
105 -(% _mstvisible="1" %)
106 -== (% _msthash="882726" _msttexthash="838526" _mstvisible="3" %)2.3 Example to join LoRaWAN network(%%) ==
107 107  
99 +== 2.3 Example to join LoRaWAN network ==
100 +
108 108  (% _msthash="315240" _msttexthash="9205482" _mstvisible="1" class="wikigeneratedid" %)
109 109  This section shows an example of how to join the TTN V3 LoRaWAN IoT server. Use with other LoRaWAN IoT servers is of a similar procedure.
110 110  
... ... @@ -111,71 +111,73 @@
111 111  (% _mstvisible="1" class="wikigeneratedid" %)
112 112  [[image:image-20220522232442-1.png||_mstalt="427830" _mstvisible="3" height="387" width="648"]]
113 113  
114 -(% _msthash="315241" _msttexthash="10802155" _mstvisible="1" %)
107 +
108 +(((
115 115  Assume the LPS8N is already set to connect to [[TTN V3 network>>url:https://eu1.cloud.thethings.network||_mstvisible="2"]], So it provides network coverage for LHT65N. Next we need to add the LHT65N device in TTN V3:
110 +)))
116 116  
117 117  
118 -(% _mstvisible="1" %)
119 -=== (% _msthash="670592" _msttexthash="634075" _mstvisible="3" %)2.3.1 Step 1: Create Device n TTN(%%) ===
120 120  
121 -(% _msthash="315242" _msttexthash="1601782" _mstvisible="1" %)
114 +=== 2.3.1 Step 1: Create Device n TTN ===
115 +
116 +(((
122 122  Create a device in TTN V3 with the OTAA keys from LHT65N.
118 +)))
123 123  
124 -(% _msthash="315243" _msttexthash="3694444" _mstvisible="1" %)
120 +(((
125 125  Each LHT65N is shipped with a sticker with its device EUI, APP Key and APP EUI as below:
122 +)))
126 126  
127 -(% _mstvisible="1" %)
128 128  [[image:image-20220617150003-1.jpeg]]
129 129  
130 -(% _msthash="315244" _msttexthash="3659149" _mstvisible="1" %)
131 131  User can enter these keys in the LoRaWAN Server portal. Below is TTN V3 screenshot:
132 132  
133 -(% _msthash="315245" _msttexthash="642889" _mstvisible="1" %)
134 134  Add APP EUI in the application.
135 135  
136 -(% _mstvisible="1" %)
130 +
137 137  [[image:image-20220522232916-3.png||_mstalt="430495" _mstvisible="3"]]
138 138  
139 -(% _mstvisible="1" %)
133 +
140 140  [[image:image-20220522232932-4.png||_mstalt="430157" _mstvisible="3"]]
141 141  
142 -(% _mstvisible="1" %)
136 +
143 143  [[image:image-20220522232954-5.png||_mstalt="431847" _mstvisible="3"]]
144 144  
145 -(% _msthash="315246" _msttexthash="878800" _mstvisible="1" %)
139 +
146 146  Note: LHT65N use same payload as LHT65.
147 147  
148 -(% _mstvisible="1" %)
142 +
149 149  [[image:image-20220522233026-6.png||_mstalt="429403" _mstvisible="3"]]
150 150  
151 151  
152 -(% _msthash="315247" _msttexthash="595543" _mstvisible="1" %)
153 153  Input APP EUI,  APP KEY and DEV EUI:
154 154  
155 -(% _mstvisible="1" %)
148 +
156 156  [[image:image-20220522233118-7.png||_mstalt="430430" _mstvisible="3"]]
157 157  
158 158  
159 159  
160 -(% _mstvisible="1" %)
161 -=== (% _msthash="3537456" _msttexthash="3448549" _mstvisible="3" %)2.3.2 Step 2: Activate LHT65N by pressing the ACT button for more than 5 seconds.(%%) ===
162 162  
163 -(% _msthash="315248" _msttexthash="14452321" _mstvisible="1" %)
154 +=== 2.3.2 Step 2: Activate LHT65N by pressing the ACT button for more than 5 seconds. ===
155 +
156 +(((
164 164  Use ACT button to activate LHT65N and it will auto-join to the TTN V3 network. After join success, it will start to upload sensor data to TTN V3 and user can see in the panel.
158 +)))
165 165  
166 -(% _mstvisible="1" %)
167 167  [[image:image-20220522233300-8.png||_mstalt="428389" _mstvisible="3" height="219" width="722"]]
168 168  
169 169  
170 170  
171 -(% _mstvisible="1" %)
172 -== (% _msthash="320879" _msttexthash="294970" _mstvisible="3" %)2.4 Uplink Payload(%%) ==
173 173  
174 -(% _msthash="315249" _msttexthash="7722962" _mstvisible="1" %)
165 +== 2.4 Uplink Payload ==
166 +
167 +(((
175 175  The uplink payload includes totally 11 bytes. Uplink packets use FPORT=2 and (% _mstvisible="3" style="color:#4f81bd" %)**every 20 minutes**(%%) send one uplink by default.
169 +)))
176 176  
177 -(% _msthash="315250" _msttexthash="1322711" _mstvisible="1" %)
171 +(((
178 178  After each uplink, the (% _mstvisible="3" style="color:blue" %)**BLUE LED**(%%) will blink once.
173 +)))
179 179  
180 180  (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:426px" %)
181 181  (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 97px;" %)(% _mstvisible="5" %)
... ... @@ -241,123 +241,108 @@
241 241  [[Ext value>>||anchor="H2.4.6Extvalue" _msthash="1817487" _msttexthash="116545" _mstvisible="7"]]
242 242  )))
243 243  
244 -(% _mstvisible="1" %)
245 245  * The First 6 bytes: has fix meanings for every LHT65N.
246 246  * The 7th byte (EXT #): defines the external sensor model.
247 247  * The 8(% _msthash="734578" _msttexthash="21372" _mstvisible="4" %)^^th^^(%%) ~~ 11(% _msthash="734579" _msttexthash="21372" _mstvisible="4" %)^^th^^(%%) byte: the value for external sensor value. The definition is based on external sensor type. (If EXT=0, there won’t be these four bytes.)
248 248  
249 -(% _mstvisible="1" %)
250 -=== (% _msthash="360269" _msttexthash="333762" _mstvisible="3" %)2.4.1 Decoder in TTN V3(%%) ===
251 251  
252 -(% _msthash="315251" _msttexthash="9786491" _mstvisible="1" %)
244 +
245 +
246 +
247 +=== 2.4.1 Decoder in TTN V3 ===
248 +
253 253  When the uplink payload arrives TTNv3, it shows HEX format and not friendly to read. We can add LHT65N decoder in TTNv3 for friendly reading.
254 254  
255 -(% _msthash="315252" _msttexthash="3928483" _mstvisible="1" %)
256 256  Below is the position to put the decoder and LHT65N decoder can be download from here:
257 257  
258 -(% _mstvisible="1" %)
253 +
259 259  [[https:~~/~~/www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0 >>https://www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0||_msthash="315253" _msttexthash="3509064" _mstvisible="2"]]
260 260  
261 -(% _mstvisible="1" %)
256 +
262 262  [[image:image-20220522234118-10.png||_mstalt="451464" _mstvisible="3" height="353" width="729"]]
263 263  
264 264  
265 265  
266 -(% _mstvisible="1" %)
267 -=== (% _msthash="411411" _msttexthash="383656" _mstvisible="3" %)2.4.2 BAT-Battery Info(%%) ===
268 268  
269 -(% _msthash="315254" _msttexthash="3122912" _mstvisible="1" %)
262 +=== 2.4.2 BAT-Battery Info ===
263 +
270 270  These two bytes of BAT include the battery state and the actually voltage
271 271  
272 -(% _mstvisible="1" %)
273 273  [[image:image-20220523152839-18.png||_mstalt="457613" _mstvisible="3"]]
274 274  
275 -(% _mstvisible="1" %)
268 +
276 276  [[image:image-20220522235639-1.png||_mstalt="431392" _mstvisible="3" height="139" width="727"]]
277 277  
278 -(% _msthash="315255" _msttexthash="871611" _mstvisible="1" %)
271 +
279 279  Check the battery voltage for LHT65N.
280 280  
281 -(% _mstvisible="1" %)
282 282  * BAT status=(0Xcba4>>14)&0xFF=11(B)，very good
283 283  * Battery Voltage =0xCBF6&0x3FFF=0x0BA4=2980mV
284 284  
285 -(% _mstvisible="1" %)
286 -=== (% _msthash="600769" _msttexthash="565838" _mstvisible="3" %)2.4.3 Built-in Temperature(%%) ===
287 287  
288 -(% _mstvisible="1" %)
278 +
279 +
280 +=== 2.4.3 Built-in Temperature ===
281 +
289 289  [[image:image-20220522235639-2.png||_mstalt="431756" _mstvisible="3" height="138" width="722"]]
290 290  
291 -(% _mstvisible="1" %)
292 292  * Temperature:  0x0ABB/100=27.47℃
293 293  
294 -(% _mstvisible="1" %)
295 295  [[image:image-20220522235639-3.png||_mstalt="432120" _mstvisible="3"]]
296 296  
297 -(% _mstvisible="1" %)
298 298  * Temperature:  (0xF5C6-65536)/100=-26.18℃
299 299  
300 -(% _mstvisible="1" %)
301 -=== (% _msthash="475891" _msttexthash="445120" _mstvisible="3" %)2.4.4 Built-in Humidity(%%) ===
302 302  
303 -(% _mstvisible="1" %)
291 +
292 +=== 2.4.4 Built-in Humidity ===
293 +
304 304  [[image:image-20220522235639-4.png||_mstalt="432484" _mstvisible="3" height="138" width="722"]]
305 305  
306 -(% _mstvisible="1" %)
307 307  * Humidity:    0x025C/10=60.4%
308 308  
309 -(% _mstvisible="1" %)
310 -=== (% _msthash="116532" _msttexthash="87958" _mstvisible="3" %)2.4.5 Ext #(%%) ===
311 311  
312 -(% _msthash="315256" _msttexthash="552240" _mstvisible="1" %)
299 +
300 +=== 2.4.5 Ext # ===
301 +
313 313  Bytes for External Sensor:
314 314  
315 -(% _mstvisible="1" %)
316 316  [[image:image-20220523152822-17.png||_mstalt="454545" _mstvisible="3"]]
317 317  
318 318  
319 -(% _mstvisible="1" %)
320 -=== (% _msthash="221429" _msttexthash="200655" _mstvisible="3" %)2.4.6 Ext value(%%) ===
321 321  
322 -(% _mstvisible="1" %)
323 -==== (% _msthash="1005901" _msttexthash="877578" _mstvisible="3" %)2.4.6.1 Ext~=1, E3 Temperature Sensor(%%) ====
308 +=== 2.4.6 Ext value ===
324 324  
325 -(% _mstvisible="1" %)
310 +==== 2.4.6.1 Ext~=1, E3 Temperature Sensor ====
311 +
312 +
326 326  [[image:image-20220522235639-5.png||_mstalt="432848" _mstvisible="3"]]
327 327  
328 328  
329 -(% _mstvisible="1" %)
330 330  * DS18B20 temp=0x0ADD/100=27.81℃
331 331  
332 -(% _msthash="315257" _msttexthash="1038479" _mstvisible="1" %)
333 333  The last 2 bytes of data are meaningless
334 334  
335 -(% _mstvisible="1" %)
336 336  [[image:image-20220522235639-6.png||_mstalt="433212" _mstvisible="3"]]
337 337  
338 338  
339 -(% _mstvisible="1" %)
340 340  * External temperature= (0xF54F-65536)/100=-27.37℃
341 341  
342 -(% _mstvisible="1" %)
343 -(((
344 -(% _msthash="506063" _msttexthash="1038479" _mstvisible="2" %)
345 345  The last 2 bytes of data are meaningless
346 -)))
347 347  
348 -(% _mstvisible="1" %)
349 -(((
350 -(% _msthash="506064" _msttexthash="21185632" _mstvisible="2" %)
351 351  If the external sensor is 0x01, and there is no external temperature connected. The temperature will be set to 7FFF which is 327.67℃
352 -)))
353 353  
354 354  
355 -(% _mstvisible="1" %)
356 -==== (% _msthash="1389752" _msttexthash="1234766" _mstvisible="3" %)2.4.6.2 Ext~=9, E3 sensor with Unix Timestamp(%%) ====
357 357  
358 -(% _msthash="315258" _msttexthash="41539368" _mstvisible="1" %)
331 +==== 2.4.6.2 Ext~=9, E3 sensor with Unix Timestamp ====
332 +
333 +(((
359 359  Timestamp mode is designed for LHT65N with E3 probe, it will send the uplink payload with Unix timestamp. With the limitation of 11 bytes (max distance of AU915/US915/AS923 band), the time stamp mode will be lack of BAT voltage field, instead, it shows the battery status. The payload is as below:
335 +)))
360 360  
337 +(((
338 +
339 +)))
340 +
361 361  (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
362 362  (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 96px;" %)(% _mstvisible="5" %)
363 363  (((
... ... @@ -431,6 +431,7 @@
431 431  )))
432 432  )))
433 433  
414 +
434 434  (% _mstvisible="1" %)
435 435  * (% _msthash="2539669" _msttexthash="857922" _mstvisible="3" %)**Battery status & **(% class="wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink" %)**Built-in Humidity**
436 436  
... ... @@ -461,19 +461,20 @@
461 461  
462 462  )))
463 463  
464 -(% _mstvisible="1" %)
445 +
465 465  * (% _msthash="504956" _msttexthash="245037" _mstvisible="4" %)**Status & Ext Byte**
466 466  
467 -(% _mstvisible="1" %)
468 468  [[image:image-20220523152434-16.png||_mstalt="453921" _mstvisible="3"]]
469 469  
470 -(% _mstvisible="1" %)
471 -* Poll Message Flag: 1: This message is a poll message reply, 0: means this is a normal uplink.
472 -* Sync time OK: 1: Set time ok，0: N/A. After time SYNC request is sent, LHT65N will set this bit to 0 until got the time stamp from the application server.
473 -* Unix Time Request:1: Request server downlink Unix time, 0 : N/A. In this mode, LHT65N will set this bit to 1 every 10 days to request a time SYNC. (AT+SYNCMOD to set this)
450 +* Poll Message Flag:  1: This message is a poll message reply, 0: means this is a normal uplink.
451 +* Sync time OK:  1: Set time ok，0: N/A. After time SYNC request is sent, LHT65N will set this bit to 0 until got the time stamp from the application server.
452 +* Unix Time Request:  1: Request server downlink Unix time, 0 : N/A. In this mode, LHT65N will set this bit to 1 every 10 days to request a time SYNC. (AT+SYNCMOD to set this)
474 474  
475 -==== (% _msthash="1389752" _msttexthash="1234766" _mstvisible="3" %)2.4.6.3 Ext~=6, ADC Sensor (use with E2 Cable)(%%) ====
476 476  
455 +
456 +
457 +==== 2.4.6.3 Ext~=6, ADC Sensor (use with E2 Cable) ====
458 +
477 477  In this mode, user can connect external ADC sensor to check ADC value. The 3V3_OUT can
478 478  
479 479  be used to power the external ADC sensor; user can control the power on time for this
... ... @@ -484,188 +484,128 @@
484 484  
485 485  
486 486  
487 -(% _mstvisible="1" %)
488 -== (% _msthash="487097" _msttexthash="454818" _mstvisible="3" %)2.5 Show data on Datacake(%%) ==
469 +== 2.5 Show data on Datacake ==
489 489  
490 -(% _msthash="315259" _msttexthash="20933341" _mstvisible="1" %)
471 +(((
491 491  Datacake IoT platform provides a human-friendly interface to show the sensor data, once we have sensor data in TTN V3, we can use Datacake to connect to TTN V3 and see the data in Datacake. Below are the steps:
473 +)))
492 492  
493 -(% _mstvisible="1" %)
494 494  (((
495 -(% _msthash="506065" _msttexthash="4753983" _mstvisible="2" %)
496 -(% _mstvisible="3" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the LoRaWAN network.
476 +
497 497  )))
498 498  
499 -(% _mstvisible="1" %)
500 500  (((
501 -(% _msthash="506066" _msttexthash="14696682" _mstvisible="2" %)
502 -(% _mstvisible="3" %)**Step 2**(%%): Configure your Application to forward data to Datacake you will need to add integration. Go to TTN V3 Console ~-~-> Applications ~-~-> Integrations ~-~-> Add Integrations.
480 +(% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the LoRaWAN network.
503 503  )))
504 504  
505 -(% _mstvisible="1" %)
506 506  (((
507 -(% _msthash="506067" _msttexthash="180297" _mstvisible="2" %)
484 +(% style="color:blue" %)**Step 2**(%%): Configure your Application to forward data to Datacake you will need to add integration. Go to TTN V3 Console ~-~-> Applications ~-~-> Integrations ~-~-> Add Integrations.
485 +)))
486 +
487 +(((
488 +
489 +)))
490 +
491 +(((
508 508  Add Datacake:
509 509  )))
510 510  
511 -(% _mstvisible="1" %)
495 +
512 512  [[image:image-20220523000825-7.png||_mstalt="429884" _mstvisible="3" height="262" width="583"]]
513 513  
514 514  
515 -(% _msthash="315260" _msttexthash="750178" _mstvisible="1" %)
499 +
516 516  Select default key as Access Key:
517 517  
518 -(% _mstvisible="1" %)
502 +
519 519  [[image:image-20220523000825-8.png||_mstalt="430248" _mstvisible="3" height="453" width="406"]]
520 520  
521 -(% _msthash="315261" _msttexthash="2134964" _mstvisible="1" %)
505 +
522 522  In Datacake console ([[https:~~/~~/datacake.co/>>url:https://datacake.co/||_mstvisible="2"]]) , add LHT65 device.
523 523  
524 -(% _mstvisible="1" %)
508 +
525 525  [[image:image-20220523000825-9.png||_mstalt="430612" _mstvisible="3" height="366" width="392"]]
526 526  
527 -(% _mstvisible="1" %)
511 +
528 528  [[image:image-20220523000825-10.png||_mstalt="450619" _mstvisible="3" height="413" width="728"]]
529 529  
530 530  
531 531  
532 -(% _mstvisible="1" %)
533 -== (% _msthash="350454" _msttexthash="323544" _mstvisible="3" %)2.6 Datalog Feature(%%) ==
516 +== 2.6 Datalog Feature ==
534 534  
535 -(% _msthash="315262" _msttexthash="32283004" _mstvisible="1" %)
518 +(((
536 536  Datalog Feature is to ensure IoT Server can get all sampling data from Sensor even if the LoRaWAN network is down. For each sampling, LHT65N will store the reading for future retrieving purposes. There are two ways for IoT servers to get datalog from LHT65N.
520 +)))
537 537  
538 538  
539 -(% _mstvisible="1" %)
540 -=== (% _msthash="886158" _msttexthash="842426" _mstvisible="3" %)2.6.1 Ways to get datalog via LoRaWAN(%%) ===
541 541  
542 -(% _msthash="315263" _msttexthash="409604" _mstvisible="1" %)
524 +=== 2.6.1 Ways to get datalog via LoRaWAN ===
525 +
543 543  There are two methods:
544 544  
545 -(% _mstvisible="1" %)
546 546  1. IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specify time range.
547 547  1. Set [[PNACKMD=1>>||anchor="H4.13AutoSendNone-ACKmessages"]], LHT65N will wait for ACK for every uplink, when there is no LoRaWAN network, LHT65N will store the sensor data, and it will send all messages after network recover.
548 548  
549 -(% _mstvisible="1" %)
550 -=== (% _msthash="369915" _msttexthash="342797" _mstvisible="3" %)2.6.2 Unix TimeStamp(%%) ===
551 551  
552 -(% _msthash="315264" _msttexthash="1182285" _mstvisible="1" %)
532 +=== 2.6.2 Unix TimeStamp ===
533 +
534 +
553 553  LHT65N uses Unix TimeStamp format based on
554 554  
555 -(% _mstvisible="1" %)
537 +
556 556  [[image:image-20220523001219-11.png||_mstalt="450450" _mstvisible="3" height="97" width="627"]]
557 557  
558 558  
559 -(% _mstvisible="1" %)
560 -(((
561 -(% _msthash="506068" _msttexthash="2717234" _mstvisible="2" %)
541 +
562 562  User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/||_mstvisible="3"]] :
563 -)))
564 564  
565 -(% _mstvisible="1" %)
566 -(((
567 -(% _msthash="506069" _msttexthash="709813" _mstvisible="2" %)
568 568  Below is the converter example
569 -)))
570 570  
571 -(% _mstvisible="1" %)
572 572  [[image:image-20220523001219-12.png||_mstalt="450827" _mstvisible="3" height="298" width="720"]]
573 573  
574 -(% _msthash="315265" _msttexthash="15137317" _mstvisible="1" %)
575 575  So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
576 576  
577 577  
578 -(% _mstvisible="1" %)
579 -=== (% _msthash="359294" _msttexthash="332748" _mstvisible="3" %)2.6.3 Set Device Time(%%) ===
580 580  
581 -(% _mstvisible="1" %)
582 -(((
583 -(% _msthash="506070" _msttexthash="4521946" _mstvisible="2" %)
584 -There are two ways to set device’s time:
585 -)))
552 +=== 2.6.3 Set Device Time ===
586 586  
587 -(% _mstvisible="1" %)
588 -(((
589 -(% _mstvisible="2" %)
590 -(% _msthash="506071" _msttexthash="1498471" _mstvisible="4" %)**1. Through LoRaWAN MAC Command (Default settings)**
591 -)))
554 +There are two ways to set device's time:
592 592  
593 -(% _mstvisible="1" %)
594 -(((
595 -(% _msthash="506072" _msttexthash="2126267" _mstvisible="2" %)
556 +**~1. Through LoRaWAN MAC Command (Default settings)**
557 +
596 596  User need to set SYNCMOD=1 to enable sync time via MAC command.
597 -)))
598 598  
599 -(% _mstvisible="1" %)
600 -(((
601 -(% _msthash="506073" _msttexthash="54430324" _mstvisible="2" %)
602 602  Once LHT65N Joined LoRaWAN network, it will send the MAC command (DeviceTimeReq) and the server will reply with (DeviceTimeAns) to send the current time to LHT65N. If LHT65N fails to get the time from the server, LHT65N will use the internal time and wait for next time request (AT+SYNCTDC to set the time request period, default is 10 days).
603 -)))
604 604  
605 -(% _mstvisible="1" %)
606 -(((
607 -(% _msthash="506074" _msttexthash="92531127" _mstvisible="2" %)
608 -Note: LoRaWAN Server need to support LoRaWAN v1.0.3(MAC v1.0.3) or higher to support this MAC command feature, Chirpstack,TTN V3 v3 and loriot support but TTN V3 v2 doesn’t support. If server doesn’t support this command, it will through away uplink packet with this command, so user will lose the packet with time request for TTN V3 v2 if SYNCMOD=1.
609 -)))
562 +(% style="color:red" %)Note: LoRaWAN Server need to support LoRaWAN v1.0.3(MAC v1.0.3) or higher to support this MAC command feature, Chirpstack,TTN V3 v3 and loriot support but TTN V3 v2 doesn’t support. If server doesn’t support this command, it will through away uplink packet with this command, so user will lose the packet with time request for TTN V3 v2 if SYNCMOD=1.
610 610  
611 -(% _mstvisible="1" %)
612 -(((
613 -(% _mstvisible="2" %)
614 -
615 -)))
616 616  
617 -(% _mstvisible="1" %)
618 -(((
619 -(% _mstvisible="2" %)
620 -(% _msthash="506075" _msttexthash="329719" _mstvisible="4" %)**2. Manually Set Time**
621 -)))
622 622  
623 -(% _mstvisible="1" %)
624 -(((
625 -(% _msthash="506076" _msttexthash="7889297" _mstvisible="2" %)
566 +**2. Manually Set Time**
567 +
626 626  User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.
627 627  
628 -(% _msthash="506076" _msttexthash="7889297" _mstvisible="2" %)
629 -
630 -)))
631 631  
632 -(% _mstvisible="1" %)
633 -=== (% _msthash="460759" _msttexthash="430001" _mstvisible="3" %)2.6.4 Poll sensor value(%%) ===
634 634  
635 -(% _msthash="315266" _msttexthash="4955821" _mstvisible="1" %)
572 +=== 2.6.4 Poll sensor value ===
573 +
636 636  User can poll sensor value based on timestamps from the server. Below is the downlink command.
637 637  
638 -(% _mstvisible="1" %)
639 639  [[image:image-20220523152302-15.png||_mstalt="451581" _mstvisible="3"]]
640 640  
641 -(% _mstvisible="1" %)
642 -(((
643 -(% _msthash="506077" _msttexthash="14670916" _mstvisible="2" %)
578 +
644 644  Timestamp start and Timestamp end use Unix TimeStamp format as mentioned above. Devices will reply with all data log during this time period, use the uplink interval.
645 -)))
646 646  
647 -(% _mstvisible="1" %)
648 -(((
649 -(% _mstvisible="2" %)
650 -For example, downlink command (% _mstmutation="1" %)**31 5FC5F350 5FC6 0160 05**(% _mstvisible="3" style="display:none" %)
651 -)))
581 +For example, downlink command **31 5FC5F350 5FC6 0160 05**
652 652  
653 -(% _mstvisible="1" %)
654 -(((
655 -(% _msthash="506078" _msttexthash="6907459" _mstvisible="2" %)
656 656  Is to check 2020/12/1 07:40:00 to 2020/12/1 08:40:00’s data
657 -)))
658 658  
659 -(% _mstvisible="1" %)
660 -(((
661 -(% _msthash="506079" _msttexthash="23531573" _mstvisible="2" %)
662 662  Uplink Internal =5s，means LHT65N will send one packet every 5s. range 5~~255s.
663 -)))
664 664  
665 665  
666 -(% _mstvisible="1" %)
667 -=== (% _msthash="650923" _msttexthash="614185" _mstvisible="3" %)2.6.5 Datalog Uplink payload(%%) ===
668 668  
589 +=== 2.6.5 Datalog Uplink payload ===
590 +
669 669  (% _msthash="315267" _msttexthash="2245087" _mstvisible="1" %)
670 670  The Datalog poll reply uplink will use below payload format.
671 671