Version 219.8 by Xiaoling on 2022/06/15 18:04
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1 (% style="text-align:center" %)
2 [[image:image-20220615144725-2.jpeg]]
3
4 **Table of Contents:**
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11
12 = 1.  Introduction =
13
14 == 1.1 ​ What is LMDS200 Microwave Radar DistanceSensor ==
15
16 (((
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20 (((
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23 The Dragino LMDS200 is a (% style="color:#4472c4" %)**LoRaWAN Microwave Radar distance sensor**(%%). It uses (% style="color:#4472c4" %)**24Ghz Microwave**(%%) to detect the distance between sensor and different objects. Compare vs ultrasonic or Lidar measurement method, Microwave Radar is (% style="color:#4472c4" %)**more reliable for condensation / dusty environment**(%%). It can sense correct distance even there is water or thick dust on top of the sensor.
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26 (((
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31 The LMDS200 can be applied to scenarios such as horizontal distance measurement, parking management system, object proximity and presence detection, intelligent trash can management system, robot obstacle avoidance, automatic control, sewer, etc.
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34 (((
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39 LMDS200 can (% style="color:#4472c4" %)**measure two distances**(%%): the closest object and next object behind the closest one.
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42 (((
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46 (((
47 LMDS200 supports (% style="color:#4472c4" %)**Alarm Feature**(%%), user can set the LMDS200 to uplink data in a short interval when the distance is out of configured range.
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49
50 (((
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52 )))
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54 (((
55 The LoRa wireless technology used in LMDS200 allows device to send data and reach extremely long ranges at low data-rates. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption.
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57
58 (((
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60 )))
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62 (((
63 LMDS200 is powered by 8500mAh Li-SOCI2 battery, it is designed for long term use up to 5 years.
64 )))
65
66 (((
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68 )))
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70 (((
71 Each LMDS200 is pre-load with a set of unique keys for LoRaWAN registrations, register these keys to local LoRaWAN server and it will auto connect after power on.
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73
74 (((
75
76 )))
77
78 (((
79 *Battery life depends on how often to send data, please see [[battery analyzer>>||anchor="H4. Battery & how to replace"]].
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85
86
87 [[image:1655277036890-950.png]]
88
89
90
91 == ​1.2  Features ==
92
93 * LoRaWAN 1.0.3 Class A
94 * Ultra-low power consumption
95 * Microwave Radar for distance detection
96 * Short uplink interval for Distance Alarm
97 * Monitor Battery Level
98 * Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865
99 * AT Commands to change parameters
100 * Uplink on periodically
101 * Downlink to change configure
102 * 8500mAh Battery for long term use
103 * Wall Mountable
104 * Outdoor Use
105
106 == 1.3  Radar probe specification ==
107
108 * Measuring Method: FMCW
109 * Frequency: 24.000 ~~ 24.500 GHz
110 * Measurement output power: 6dBm
111 * Measure range: 0.5 ~~ 20m
112 * Accuracy: ±0.1m
113 * Resolution: 0.01m
114 * Horizontal Angel: 78°
115 * Vertical Angel: 23°
116
117 == 1.4  Storage & Operation Temperature ==
118
119 -20°C to +85°C
120
121
122
123 == 1.5 ​ Applications ==
124
125 * Horizontal distance measurement
126 * Liquid level measurement
127 * Parking management system
128 * Object proximity and presence detection
129 * Intelligent trash can management system
130 * Robot obstacle avoidance
131 * Automatic control
132 * Sewer
133 * Bottom water level monitoring
134
135 == 1.6  Installation ==
136
137 Sensor measure direction and angle is as below. When install the sensor, please make sure the sensor direct to object.
138
139 [[image:image-20220615152454-3.png]]
140
141
142 [[image:image-20220615152454-4.png]]
143
144
145
146
147 == 1.7  Pin mapping and power on ==
148
149
150 [[image:1655257026882-201.png]]
151
152
153
154 = 2.  Operation Mode =
155
156
157 == 2.1  How it works ==
158
159 (((
160 Each LMDS200 is shipped with a worldwide unique set of OTAA keys. To use LMDS200 in a LoRaWAN network, user needs to input the OTAA keys in the LoRaWAN network server. So LMDS200 can join the LoRaWAN network and start to transmit sensor data.
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162
163
164
165 == 2.2  ​Example to use for LoRaWAN network ==
166
167 (((
168 Following is an example for how to join the [[TTN v3 LoRaWAN Network>>url:https://console.cloud.thethings.network/]]. Below is the network structure; we use the [[LG308>>url:http://www.dragino.com/products/lora/item/140-lg308.html]] as a LoRaWAN gateway in this example.
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170
171 (((
172 [[image:1655278047781-517.png]]
173
174 * In this user case, the LMDS200 is installed on top of river to detect the water level and send the level info to the LoRaWAN server. The LMDS200 will uplink different types of messages to the LoRaWAN server. See [[Uplink payload>>path:#Uplink_Payload]] for detail.
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176
177 (((
178 Assume the LoRaWAN Gateway DLOS8 is already set to connect to the [[TTN V3 network >>url:https://eu1.cloud.thethings.network]]. We need to add the LMDS200 device in TTN V3:
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180
181 (((
182 (((
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185
186 (((
187 (% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LMDS200.
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189 )))
190
191 (((
192 (((
193 Each LMDS200 is shipped with a sticker with the default device keys, user can find this sticker in the box. it looks like below.
194
195 [[image:1655278302970-688.png]]
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197
198
199 )))
200 )))
201
202 Users can enter these keys in the LoRaWAN Server portal. Below is the TTN V3 screenshot:
203
204 __**Add APP EUI**__ in the application.
205
206
207 [[image:image-20220610161353-4.png]]
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209 [[image:image-20220610161353-5.png]]
210
211 [[image:image-20220610161353-6.png]]
212
213
214 [[image:image-20220610161353-7.png]]
215
216
217
218 You can also choose to create the device manually.
219
220 [[image:image-20220610161538-8.png]]
221
222
223
224 **Add APP KEY and DEV EUI**
225
226 [[image:1655278497961-944.png]]
227
228
229
230 (% style="color:blue" %)**Step 2**(%%):  Power on LMDS200
231
232
233 Put a Jumper on JP2 to power on the device. ( The Switch must be in FLASH position).
234
235 [[image:1655278589727-228.png]]
236
237 (((
238 Put the jumper to power on LMDS200 and it will auto-join to the TTN V3 network. After join success, it will start to upload sensor data to TTN V3 and the user can see it in the panel.
239 )))
240
241
242
243 == 2.3  ​Uplink Payload ==
244
245 Uplink payloads have two types:
246
247 * Distance Value: Use FPORT=2
248 * Other control commands: Use other FPORT fields.
249
250 The application server should parse the correct value based on FPORT settings.
251
252 (((
253 (((
254 (((
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258 )))
259 )))
260 )))
261
262 === 2.3.1  Device Status, FPORT~=5 ===
263
264 Include device configure status. Once LMDS200 Joined the network, it will uplink this message to the server.
265
266 Users can also use the downlink command (0x26 01) to ask LMDS200 to resend Device Status.
267
268 [[image:image-20220615154327-2.png]]
269
270
271 [[image:image-20220615154022-1.png]](% style="display:none" %)
272
273
274 * (% style="color:#037691" %)**Sensor Model**(%%)**:** For LMDS200, this value is 0x0C
275
276 * (% style="color:#037691" %)**Firmware Version**(%%)**:** 0x0100, Means: v1.0.0 version
277
278 * (% style="color:#037691" %)**Frequency Band**(%%)**:**
279
280 *0x01: EU868
281
282 *0x02: US915
283
284 *0x03: IN865
285
286 *0x04: AU915
287
288 *0x05: KZ865
289
290 *0x06: RU864
291
292 *0x07: AS923
293
294 *0x08: AS923-1
295
296 *0x09: AS923-2
297
298 *0x0a: AS923-3
299
300 *0x0b: CN470
301
302 *0x0c: EU433
303
304 *0x0d: KR920
305
306 *0x0e: MA869
307
308
309 * (% style="color:#037691" %)**Sub-Band**(%%)**:**
310 ** AU915 and US915:value 0x00 ~~ 0x08
311 ** CN470: value 0x0B ~~ 0x0C
312 ** Other Bands: Always 0x00
313
314 * (% style="color:#037691" %)**Battery Info:**
315
316 Check the battery voltage.
317
318 Ex1: 0x0B45 = 2885mV
319
320 Ex2: 0x0B49 = 2889mV
321
322
323
324 === 2.3.2  Sensor Configuration, FPORT~=4 ===
325
326 (((
327 LMDS200 will only send this command after getting the downlink command (0x26 02) from the server.
328
329 (% border="1" cellspacing="10" style="background-color:#ffffcc; width:494px" %)
330 |(% colspan="5" style="width:491px" %)**Sensor Configuration FPORT=4**
331 |**Size (bytes)**|(% style="width:84px" %)**3**|(% style="width:73px" %)**1**|(% style="width:117px" %)**4**|(% style="width:136px" %)**1**
332 |**Value**|(% style="width:84px" %)(((
333 [[TDC (unit:sec)>>||anchor="H"]]
334 )))|(% style="width:73px" %)(((
335 [[ATDC (unit:min)>>||anchor="H"]]
336 )))|(% style="width:117px" %)[[Alarm Settings>>||anchor="H"]]|(% style="width:136px" %)[[Interrupt Settings>>||anchor="H"]]
337 )))
338
339 [[image:1655279779620-413.png]]
340
341
342
343 === 2.3.3  Distance, Uplink FPORT~=2 ===
344
345 LMDS200 will send this uplink **after** Device Status once join the LoRaWAN network successfully. And LMDS200 will:
346
347 1. periodically send this uplink every 1 hour (TDC time), this interval [[can be changed>>||anchor="H"]].
348 1. periodically send this uplink every 1 minute in Alarm Mode.
349 1. send this uplink while there is [[interrupt event>>||anchor="H"]].
350
351 Uplink Payload totals 11 bytes.
352
353
354 (% border="1" cellspacing="10" style="background-color:#ffffcc; width:508px" %)
355 |(% colspan="5" style="width:505px" %)**Distance Value, FPORT=2**
356 |(% style="width:72px" %)**Size (bytes)**|(% style="width:43px" %)**2**|(% style="width:134px" %)**2**|(% style="width:134px" %)**2**|(% style="width:121px" %)**1**
357 |(% style="width:72px" %)**Value**|(% style="width:43px" %)[[BAT>>path:#bat]]|(% style="width:134px" %)Object1 Distance|(% style="width:134px" %)Object2 Distance|(% style="width:121px" %)Status & [[Alarm>>path:#Alarm_Timeout]]
358
359 [[image:image-20220615161345-5.png]]
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361
362 [[image:image-20220615160828-3.png]]
363
364
365 (((
366 (% style="color:#037691" %)** Object1 Distance:**
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368
369 (((
370 Distance between sensor probe to the first object. (unit: cm)
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372
373 (((
374 For example, if the data you get from the register is __0x00 0x73__, the distance between the sensor and the measured object is(% style="color:#037691" %)** 0073(H) = 115 (D) = 115 cm.**
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376
377
378 (((
379 (% style="color:red" %)Notice: There are two special values for object 1 distance:
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381
382 * (((
383 **0x0001**: Probe not detected
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385 * (((
386 **0x0002**: Reading Invalid (exceed the valid range of the probe)
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389 (((
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393 (((
394 (% style="color:#037691" %)**Object2 Distance:**
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396
397 (((
398 Distance between sensor probe to the second object. (unit: cm)
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400
401 (((
402 DALARM Counter : Alarm Counter.
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405 (((
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407 )))
408
409 [[image:image-20220615160828-4.png]]
410
411
412
413 === 2.3.4  Decoder in TTN V3 ===
414
415
416 [[image:1655261164557-670.png]]
417
418 (((
419 Please check the decoder from this link:
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421
422 (((
423 [[https:~~/~~/www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LMDS200/payload_decode/>>url:https://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LDS03A/payload_decode/]]
424 )))
425
426
427
428 == 2.4  ​Show data on Datacake ==
429
430 (((
431 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:
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433
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436 (((
437 (% style="color:blue" %)**Step 1**(%%)**: **Link TTNv3 to [[DATACAKE>>url:https://datacake.co/]]
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439
440 (((
441 (% style="color:blue" %)**Step 2**(%%)**: **Configure LMDS200 in Datacake
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443
444
445 [[image:image-20220615163646-6.png]]
446
447
448 [[image:image-20220615163646-7.png]]
449
450
451 [[image:image-20220615163646-8.png]]
452
453
454 [[image:image-20220615163646-9.png||height="392" width="1211"]]
455
456
457 [[image:image-20220615163646-10.png]]
458
459 (% style="display:none" %) (%%)
460
461 [[image:image-20220615163646-11.png||height="434" width="1206"]](% style="display:none" %)
462
463
464 [[image:image-20220615163646-12.png||height="357" width="1202"]](% style="display:none" %)
465
466 (% style="display:none" %) (%%)
467
468 [[image:image-20220615163646-13.png]](% style="display:none" %)
469
470
471 [[image:image-20220615163646-14.png]]
472
473
474 [[image:image-20220615163646-15.png]](% style="display:none" %)
475
476 (% style="display:none" %) (%%)
477
478
479 = 3.  Configure LMDS200 via AT Command or LoRaWAN Downlink =
480
481 (((
482 (((
483 Use can configure LMDS200 via AT Command or LoRaWAN Downlink.
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485 )))
486
487 * (((
488 (((
489 AT Command Connection: See [[FAQ>>||anchor="H5.A0FAQ"]].
490 )))
491 )))
492 * (((
493 (((
494 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
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496 )))
497
498 (((
499 (((
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502
503 (((
504 There are two kinds of commands to configure LMDS200, they are:
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508 * (((
509 (((
510 (% style="color:#4f81bd" %)** General Commands**.
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513
514 (((
515 (((
516 These commands are to configure:
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518 )))
519
520 * (((
521 (((
522 General system settings like: uplink interval.
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524 )))
525 * (((
526 (((
527 LoRaWAN protocol & radio related command.
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529 )))
530
531 (((
532 (((
533 They are same for all Dragino Device which support DLWS-005 LoRaWAN Stack**(Note~*~*)**. These commands can be found on the wiki: [[End Device AT Commands and Downlink Command>>doc:Main.End Device AT Commands and Downlink Command.WebHome]]
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537 (((
538 (((
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540 )))
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542
543 * (((
544 (((
545 (% style="color:#4f81bd" %)** Commands special design for LMDS200**
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548
549 (((
550 (((
551 These commands only valid for LMDS200, as below:
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553 )))
554
555
556 == 3.1  Set Transmit Interval Time(0x01) ==
557
558 Feature: Change LoRaWAN End Node Transmit Interval.
559
560 (% style="color:#037691" %)**AT Command: AT+TDC**
561
562 (% aria-label="image-20220610173409-7.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220610173409-7.png||data-widget="image"]](% title="Click and drag to resize" %)​(% aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" tabindex="-1" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||data-widget="image" draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220, 220, 220, 0.5); display:none" tabindex="-1" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" tabindex="-1" title="Click and drag to resize" %)​(% title="Click and drag to resize" %)​
563
564
565 (((
566 (% style="color:#037691" %)**Downlink Command: 0x01**
567 )))
568
569 (((
570 (((
571 Format: Command Code (0x01) followed by 3 bytes time value.
572
573 (((
574 If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
575 )))
576
577 * Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
578 * Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
579 )))
580 )))
581
582
583
584 == 3.2 Set Alarm Transmit Interval Time(0x0D) ==
585
586 Feature: Change LoRaWAN End Node Alarm Transmit Interval. Default Value: 1 minute
587
588 (% style="color:#037691" %)**AT Command: AT+ATDC**
589
590 [[image:image-20220615175212-2.png]]
591
592
593 (% style="color:#037691" %)**Downlink Command: 0x0D**
594
595 Format: Command Code (0x0D) followed by 1 byte for time value.
596
597 If the downlink payload=0D02, it means set the END Node's Alarm Transmit Interval to 2 minutes, while type code is 0D.
598
599
600
601 == 3.3 Set Alarm Distance (0xA2) ==
602
603 LMDS02 supports Alarm Feature, when LMDS02 detect the distance exceed the alarm settings, LMDS02 will Enter Alarm Mode and use the [[ATDC interval>>path:#Alarm_Interval]] (default is 1 minute) to uplink Distance value. Alarm mode will last for 60 uplinks (default 1 hour) and can be close by downlink command 0xA300.
604
605 (% style="color:red" %)**Note: Alarm mode only valid for the Distance 1(the Closest Object)**
606
607
608 User can set Alarm Distance to enable/disable Alarm Mode.
609
610 (% style="color:#037691" %)**AT+ALARMC=AABBCCDD**
611
612
613 * AABB: Hex value for Alarm low threshold, CCDD: Hex value for Alarm high threshold
614 * When 0xAABB=0, and 0xCCDD≠0, Alarm trigger when higher than max
615 * When 0xAABB≠0, and 0xCCDD =0xFFFF, Alarm trigger when lower than min
616 * When 0xAABB≠0 and 0xCCDD≠0, Alarm trigger when higher than max or lower than min
617
618 Example:
619
620 AT+ALARMC=006400C8   ~/~/ Alarm when < 100 or higher than 200.
621
622
623 * (% style="color:#037691" %)**Downlink Payload:**
624
625 0x(A2 00 01 00 00)   ~/~/ Same as AT+ALARMC=00010000
626
627
628
629 == 3.4 Enter/Exit Alarm Mode (0xA3) ==
630
631 Feature: Enter/Exit Alarm mode:
632
633 (% style="color:#037691" %)**AT Command: AT+ALARM=0(Exit Alarm Mode or AT+ALARM=1 (Enter Alarm Mode)**
634
635
636 (% style="color:#037691" %)**Downlink Command:**
637
638 0xA3 00 ~/~/ Exit Alarm Mode. 
639
640 0xA3 01 ~/~/ Enter Alarm Mode. Enter Alarm mode will use ATDC interval in the next 59 uplinks.
641
642
643
644 == 3.5  Set Interrupt Mode(0x06) ==
645
646 Feature, Set Interrupt mode for GPIO_EXIT.
647
648 (% style="color:#037691" %)**Downlink Command: AT+INTMOD**
649
650 [[image:image-20220610174917-9.png]]
651
652
653 (((
654 (% style="color:#037691" %)**Downlink Command: 0x06**
655 )))
656
657 (((
658 Format: Command Code (0x06) followed by 3 bytes.
659 )))
660
661 (((
662 (((
663 This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
664 )))
665 )))
666
667 * (((
668 Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
669 )))
670 * (((
671 Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
672 )))
673
674 (((
675
676 )))
677
678 (((
679
680
681 == 4.  Battery & how to replace ==
682
683
684 === 4.1  Battery Type ===
685
686 (((
687 LMDS200 is equipped with a [[8500mAH ER26500 Li-SOCI2 battery>>url:https://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]]. The battery is un-rechargeable battery with low discharge rate targeting for 8~~10 years use. This type of battery is commonly used in IoT target for long-term running, such as water meter.
688
689 The discharge curve is not linear so can’t simply use percentage to show the battery level. Below is the battery performance.
690
691 [[image:image-20220615165029-16.png||height="645" width="908"]]
692
693
694 Minimum Working Voltage for the LMDS200:
695
696 LMDS200:  2.45v ~~ 3.6v
697 )))
698
699
700 === 4.2  Replace Battery ===
701
702
703 Any battery with range 2.45 ~~ 3.6v can be a replacement. We recommend to use Li-SOCl2 Battery.
704
705 And make sure the positive and negative pins match.
706
707
708
709 === 4.3  Power Consumption Analyze ===
710
711 Dragino Battery powered product are all runs in Low Power mode. We have an update battery calculator which base on the measurement of the real device. User can use this calculator to check the battery life and calculate the battery life if want to use different transmit interval.
712
713 Instruction to use as below:
714
715
716 (% style="color:blue" %)**Step 1**(%%)**: **Downlink the up-to-date DRAGINO_Battery_Life_Prediction_Table.xlsx from:
717
718 [[https:~~/~~/www.dragino.com/downloads/index.php?dir=LoRa_End_Node/Battery_Analyze/>>url:https://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/Battery_Analyze/]]
719
720
721 (% style="color:blue" %)**Step 2**(%%)**:** Open it and choose
722
723 * Product Model
724 * Uplink Interval
725 * Working Mode
726
727 And the Life expectation in difference case will be shown on the right.
728
729 [[image:image-20220615165329-17.png||height="363" width="1123"]]
730
731
732 (((
733 (% id="cke_bm_628908S" style="display:none" %) (%%)The battery related documents as below:
734 )))
735
736 * (((
737 [[Battery Dimension>>https://www.dragino.com/downloads/index.php?dir=datasheet/Battery/]]
738 )))
739 * (((
740 [[Lithium-Thionyl Chloride Battery  datasheet>>https://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]](% style="display:none" %)
741 )))
742 * (((
743 [[Lithium-ion Battery-Capacitor datasheet>>https://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]]
744 )))
745
746 [[image:image-20220615111024-1.png]]
747
748 (% style="display:none" %) (%%)
749
750
751 === 4.3.1  Battery Note ===
752
753 The Li-SICO battery is designed for small current / long period application. It is not good to use a high current, short period transmit method. The recommended minimum period for use of this battery is 5 minutes. If you use a shorter period time to transmit LoRa, then the battery life may be decreased.
754
755
756
757 === 4.3.2  Replace the battery ===
758
759 You can change the battery in the LMDS200.The type of battery is not limited as long as the output is between 3v to 3.6v. 
760
761 The default battery pack of LMDS200 includes a ER26500 plus super capacitor. If user can’t find this pack locally, they can find ER26500 or equivalence, which will also work in most case. The SPC can enlarge the battery life for high frequency use (update period below 5 minutes).
762
763
764
765 )))
766
767 = 5.  FAQ =
768
769
770
771 == 5.1  How to use AT Command to configure LMDS200 ==
772
773 LDDS20 use the same frequency as other Dragino products. User can see the detail from this link:  [[Introduction>>doc:Main.End Device Frequency Band.WebHome||anchor="H1.Introduction"]]
774
775
776
777 == 5.2  How to upgrade the firmware? ==
778
779 A new firmware might be available for:
780
781 * Support new features
782 * For bug fix
783 * Change LoRaWAN bands.
784
785 Instruction for how to upgrade: [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/Firmware%20Upgrade%20Instruction%20for%20STM32%20base%20products/#H2.HardwareUpgradeMethodSupportList>>http://wiki.dragino.com/xwiki/bin/view/Main/Firmware%20Upgrade%20Instruction%20for%20STM32%20base%20products/#H2.HardwareUpgradeMethodSupportList]]
786
787
788 Firmware location: [[https:~~/~~/www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LMDS200/Firmware/>>url:https://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LDS03A/Firmware/]]
789
790
791
792 == 5.3  How to change the LoRa Frequency Bands/Region ==
793
794 You can follow the instructions for [[how to upgrade image>>||anchor="H2.7A0200BFirmwareChangeLog"]].
795 When downloading the images, choose the required image file for download. ​
796
797
798
799 = 5.  Trouble Shooting =
800
801 == 5.1  Why I can't join TTN V3 in US915 / AU915 bands? ==
802
803 It is due to channel mapping. Please see below link:  [[Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
804
805
806 == 5.2  AT Command input doesn't work ==
807
808 In the case if user can see the console output but can't type input to the device. Please check if you already include the (% style="color:green" %)**ENTER**(%%) while sending out the command. Some serial tool doesn't send (% style="color:green" %)**ENTER**(%%) while press the send key, user need to add ENTER in their string.
809
810 (((
811
812 )))
813
814
815 = 6.  Order Info =
816
817
818 Part Number **:** (% style="color:blue" %)**LDDS20-XX**
819
820
821 (% style="color:blue" %)**XX**(%%)**: **The default frequency band
822
823 * (% style="color:red" %)**AS923 **(%%)**:** LoRaWAN AS923 band
824 * (% style="color:red" %)**AU915 **(%%)**:** LoRaWAN AU915 band
825 * (% style="color:red" %)**EU433 **(%%)**:** LoRaWAN EU433 band
826 * (% style="color:red" %)**EU868 **(%%)**:** LoRaWAN EU868 band
827 * (% style="color:red" %)**KR920 **(%%)**:** LoRaWAN KR920 band
828 * (% style="color:red" %)**US915 **(%%)**:** LoRaWAN US915 band
829 * (% style="color:red" %)**IN865 **(%%)**:**  LoRaWAN IN865 band
830 * (% style="color:red" %)**CN470 **(%%)**:** LoRaWAN CN470 band
831
832 = 7. ​ Packing Info =
833
834
835 (((
836 **Package Includes**:
837 )))
838
839 * (((
840 LDDS20 LoRaWAN Liquid Level Sensor x 1
841 )))
842
843 (((
844 (% style="color:red" %)**Note:**
845 )))
846
847 (((
848 (((
849 (% style="color:red" %)**Ultrasonic coupling paste**(%%) and(% style="color:red" %)** Eproxy AB glue**(%%) are subjected in most shipping way. So the default package doesn't include it and user needs to purchase locally.
850 )))
851 )))
852
853 (((
854
855 )))
856
857 (((
858 **Dimension and weight**:
859 )))
860
861 * (((
862 Device Size: cm
863 )))
864 * (((
865 Device Weight: g
866 )))
867 * (((
868 Package Size / pcs : cm
869 )))
870 * (((
871 Weight / pcs : g
872
873
874
875 )))
876
877 = 8.  ​Support =
878
879 * Support is provided Monday to Friday, from 09:00 to 18:00 GMT+8. Due to different timezones we cannot offer live support. However, your questions will be answered as soon as possible in the before-mentioned schedule.
880 * Provide as much information as possible regarding your enquiry (product models, accurately describe your problem and steps to replicate it etc) and send a mail to [[support@dragino.com>>url:http://../../../../../../D:%5C%E5%B8%82%E5%9C%BA%E8%B5%84%E6%96%99%5C%E8%AF%B4%E6%98%8E%E4%B9%A6%5CLoRa%5CLT%E7%B3%BB%E5%88%97%5Csupport@dragino.com]].

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