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Last modified by Mengting Qiu on 2023/12/14 11:15
From version 125.2
edited by Xiaoling
on 2023/11/29 08:52
Change comment: There is no comment for this version
To version 170.1
edited by Edwin Chen
on 2023/12/11 22:50
Change comment: There is no comment for this version

Summary

Details

Page properties
Author
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1 -XWiki.Xiaoling
1 +XWiki.Edwin
Content
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8 8  
9 9  
10 10  
11 -**Table of Contents：**
11 +**Table of Contents:(% style="display:none" %) (%%)**
12 12  
13 13  {{toc/}}
14 14  
... ... @@ -50,7 +50,6 @@
50 50  
51 51  == 1.3 Specification ==
52 52  
53 -
54 54  (% style="color:#037691" %)**LiDAR Sensor:**
55 55  
56 56  * Operation Temperature: -40 ~~ 80 °C
... ... @@ -67,7 +67,7 @@
67 67  
68 68  (% style="color:#037691" %)**Battery Power Mode:**
69 69  
70 -* Idle: 0.003 mA @ 3.3v
69 +* Idle: 3uA @ 3.3v
71 71  * Max : 360 mA
72 72  
73 73  (% style="color:#037691" %)**Continuously mode**:
... ... @@ -76,6 +76,21 @@
76 76  * Max : 360 mA
77 77  
78 78  
78 +== 1.5 Use Case ==
79 +
80 +(% class="mark" %)**Regular Distance Detect**
81 +
82 +[[image:image-20231211220922-1.png||height="352" width="605"]]
83 +
84 +
85 +(% class="mark" %)**Counting / Alarm**
86 +
87 +[[image:image-20231211221253-2.png]]
88 +
89 +
90 +[[image:image-20231211221436-3.png]]
91 +
92 +
79 79  = 2. Configure DS20L to connect to LoRaWAN network =
80 80  
81 81  == 2.1 How it works ==
... ... @@ -94,7 +94,7 @@
94 94  
95 95  [[image:image-20231110102635-5.png||height="402" width="807"]](% style="display:none" %)
96 96  
97 -(% style="color:blue" %)**Step 1:**(%%) Create a device in TTN with the OTAA keys from DS20L.
111 +=== Step 1: Create a device in TTN with the OTAA keys from DS20L. ===
98 98  
99 99  Each DS20L is shipped with a sticker with the default device EUI as below:
100 100  
... ... @@ -101,41 +101,36 @@
101 101  [[image:image-20230426084152-1.png||alt="图片-20230426084152-1.png" height="233" width="502"]]
102 102  
103 103  
104 -You can enter this key in the LoRaWAN Server portal. Below is TTN screen shot:
118 +You can enter this key in the LoRaWAN Server portal. Below is TTN V3 screenshot:
105 105  
106 106  
107 107  (% style="color:blue" %)**Register the device**
108 108  
109 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50v2-S31-S31B%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20User%20Manual/WebHome/1654935135620-998.png?rev=1.1||alt="1654935135620-998.png"]]
123 +[[image:image-20231207144600-2.png||height="703" width="756"]]
110 110  
111 111  
112 -(% style="color:blue" %)**Add APP EUI and DEV EUI**
126 +(% style="color:blue" %)**Add DevEUI and AppKey**
113 113  
114 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50v2-S31-S31B%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20User%20Manual/WebHome/image-20220611161308-4.png?width=753&height=551&rev=1.1||alt="图片-20220611161308-4.png"]]
128 +[[image:image-20231207145121-5.png||height="540" width="756"]]
115 115  
116 116  
117 -(% style="color:blue" %)**Add APP EUI in the application**
118 118  
132 +=== Step 2: Activate DS20L ===
119 119  
120 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50v2-S31-S31B%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20User%20Manual/WebHome/image-20220611161308-5.png?width=742&height=601&rev=1.1||alt="图片-20220611161308-5.png"]]
121 -
122 -
123 -(% style="color:blue" %)**Add APP KEY**
124 -
125 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50v2-S31-S31B%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20User%20Manual/WebHome/image-20220611161308-6.png?width=744&height=485&rev=1.1||alt="图片-20220611161308-6.png"]]
126 -
127 -
128 -(% style="color:blue" %)**Step 2:**(%%) Activate on DS20L
129 -
130 130  [[image:image-20231128133704-1.png||height="189" width="441"]]
131 131  
132 132  Press the button for 5 seconds to activate the DS20L.
133 133  
138 +The switch is switched to (% style="color:blue" %)**E** (%%)and the external power supply is used.
139 +
140 +The switch is switched to (% style="color:blue" %)**I** (%%)and DS20L will be power by the built-in battery.
141 +
134 134  (% style="color:green" %)**Green led**(%%) will fast blink 5 times, device will enter (% style="color:blue" %)**OTA mode**(%%) for 3 seconds. And then start to JOIN LoRaWAN network. (% style="color:green" %)**Green led**(%%) will solidly turn on for 5 seconds after joined in network.
135 135  
136 136  After join success, it will start to upload messages to TTN and you can see the messages in the panel.
137 137  
138 138  
147 +
139 139  == 2.3 ​Uplink Payload ==
140 140  
141 141  === 2.3.1 Device Status, FPORT~=5 ===
... ... @@ -153,7 +153,7 @@
153 153  
154 154  Example parse in TTNv3
155 155  
156 -[[image:1701149922873-259.png]]
165 +[[image:image-20231206151412-3.png||height="179" width="1070"]]
157 157  
158 158  (% style="color:blue" %)**Sensor Model**(%%): For DS20L, this value is 0x21
159 159  
... ... @@ -209,7 +209,7 @@
209 209  === 2.3.2 Uplink Payload, FPORT~=2 ===
210 210  
211 211  
212 -==== (% style="color:red" %)**MOD~=1**(%%) ====
221 +==== (% style="color:red" %)**AT+MOD~=1**(%%) ====
213 213  
214 214  Regularly detect distance and report. When the distance exceeds the limit, the alarm flag is set to 1, and the report can be triggered by external interrupts.
215 215  
... ... @@ -219,7 +219,7 @@
219 219  |(% style="background-color:#4f81bd; color:white; width:60px" %)**Size(bytes)**|(% style="background-color:#4f81bd; color:white; width:30px" %)**2**|(% style="background-color:#4f81bd; color:white; width:130px" %)**1**|(% style="background-color:#4f81bd; color:white; width:70px" %)**2**|(% style="background-color:#4f81bd; color:white; width:100px" %)**1**|(% style="background-color:#4f81bd; color:white; width:120px" %)**4**
220 220  |(% style="width:91px" %)Value|(% style="width:41px" %)BAT|(% style="width:176px" %)MOD+ Alarm+Interrupt|(% style="width:74px" %)Distance|(% style="width:100px" %)Sensor State|(% style="width:119px" %)Interrupt Count
221 221  
222 -[[image:1701155076393-719.png]]
231 +[[image:image-20231209152917-1.png||height="300" width="1172"]]
223 223  
224 224  (% style="color:blue" %)**Battery Info:**
225 225  
... ... @@ -257,24 +257,100 @@
257 257  
258 258  Ex1: 0x00: Normal collection distance
259 259  
260 -Ex2 0x0x: Distance collection is wrong
269 +Ex2: 0x0x: Distance collection is wrong
261 261  
262 262  
263 -(% style="color:blue" %)**Interript Count:**
272 +(% style="color:blue" %)**Interrupt Count:**
264 264  
265 265  If payload is:000007D0H: count = 07D0H =2000
266 266  
267 267  
268 268  
269 -==== (% style="color:red" %)**MOD~=2**(%%)** ** ====
278 +==== (% style="color:red" %)**AT+MOD~=2**(%%)** ** ====
270 270  
271 -Uninterrupted measurement. When the distance exceeds the limit, the output IO is set high and reports are reported every five minutes. The time can be set and powered by an external power supply.Uplink Payload totals 11bytes.
272 272  
281 +The power consumption of uninterrupted measurement is high, and the device needs to use external power supply.(The switch is switched to E and the external power supply is used.)
282 +
283 +[[image:image-20231128133704-1.png||height="189" width="441"]]
284 +
285 +
286 +* **Set over-limit alarm mode: AT+DOL=3,500,244,**(% style="color:red" %)0(%%)**,120**
287 +
288 +(% class="wikigeneratedid" id="HUninterruptedmeasurement.Whenthedistanceexceedsthelimit2CtheoutputIOissethighandreportsarereportedeveryfiveminutes.Thetimecanbesetandpoweredbyanexternalpowersupply.UplinkPayloadtotals11bytes." %)
289 +Uninterrupted measurement. When the distance exceeds the limit, the output IO high, instant alarm. Uplink Payload totals 9 bytes.
290 +
273 273  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
292 +|(% style="background-color:#4f81bd; color:white; width:70px" %)**Size(bytes)**|(% style="background-color:#4f81bd; color:white; width:40px" %)**2**|(% style="background-color:#4f81bd; color:white; width:130px" %)**1**|(% style="background-color:#4f81bd; color:white; width:130px" %)**2**|(% style="background-color:#4f81bd; color:white; width:70px" %)**2**|(% style="background-color:#4f81bd; color:white; width:70px" %)**2**
293 +|(% style="width:91px" %)Value|(% style="width:41px" %)BAT|(% style="width:176px" %)MOD+Alarm+DO+Limit flag|(% style="width:74px" %)Distance |(% style="width:100px" %)Upper limit|(% style="width:119px" %)Lower limit
294 +
295 +[[image:image-20231209171127-3.png||height="374" width="1209"]]
296 +
297 +(% style="color:blue" %)**MOD & Alarm & Do & Limit flag:**
298 +
299 +(% style="color:red" %)**MOD:**
300 +
301 +**Example: ** (0x60>>6) & 0x3f =1
302 +
303 +**0x01:**  Regularly detect distance and report.
304 +**0x02: ** Uninterrupted measurement (external power supply).
305 +
306 +(% style="color:red" %)**Alarm:**
307 +
308 +When the detection distance exceeds the limit, the alarm flag is set to 1.
309 +
310 +(% style="color:red" %)**DO:**
311 +
312 +When the distance exceeds the set threshold, pull the Do pin high.
313 +
314 +(% style="color:red" %)**Limit flag:**
315 +
316 +Mode for setting threshold: **0~~3**
317 +
318 +**0:** does not use upper and lower limits
319 +
320 +**1:** Use upper and lower limits
321 +
322 +**2:** Less than the upper limit
323 +
324 +**3: **Greater than the lower limit
325 +
326 +
327 +(% style="color:blue" %)**Distance:**
328 +
329 + Actual sampling distance values.
330 +
331 +**Example:**
332 +
333 +**AT+DOL=1,500,244,**(% style="color:red" %)0(%%)**,120  **
334 +
335 +The distance is detected every 120ms.
336 +
337 +When the actual detection value is within the range of [244mm,500mm], the data is uploaded in the normal TDC time.
338 +
339 +When the actual detection value is outside the range of [244mm,500mm], the uplink data will be immediately alerted.
340 +
341 +If payload is: 0708H: distance = 0708H = 1800 mm
342 +
343 +
344 +(% style="color:blue" %)**Upper limit:**
345 +
346 +The upper limit of the threshold cannot exceed 2000mm.
347 +
348 +
349 +(% style="color:blue" %)**Lower limit:**
350 +
351 +The lower limit of the threshold cannot be less than 3mm.
352 +
353 +
354 +* **Set the person or object count mode: AT+DOL=1,500,244,**(% style="color:red" %)1(%%)**,120**
355 +
356 +Continuous measurement, detect and count people or things passing by in distance limit mode. Uplink Payload totals 11 bytes.
357 +
358 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:600px" %)
274 274  |(% style="background-color:#4f81bd; color:white; width:70px" %)**Size(bytes)**|(% style="background-color:#4f81bd; color:white; width:40px" %)**2**|(% style="background-color:#4f81bd; color:white; width:130px" %)**1**|(% style="background-color:#4f81bd; color:white; width:130px" %)**4**|(% style="background-color:#4f81bd; color:white; width:70px" %)**2**|(% style="background-color:#4f81bd; color:white; width:70px" %)**2**
275 -|(% style="width:91px" %)Value|(% style="width:41px" %)BAT|(% style="width:176px" %)MOD+Alarm+Do+Limit flag|(% style="width:74px" %)Distance Limit Alarm count|(% style="width:100px" %)Upper limit|(% style="width:119px" %)Lower limit
360 +|(% style="width:91px" %)Value|(% style="width:41px" %)BAT|(% style="width:176px" %)MOD+Alarm+Do+Limit flag|(% style="width:176px" %)Distance limit alarm count|(% style="width:100px" %)Upper limit|(% style="width:119px" %)Lower limit
276 276  
277 -[[image:1701155150328-206.png]]
362 +[[image:image-20231209173457-5.png||height="277" width="1098"]]
278 278  
279 279  (% style="color:blue" %)**MOD & Alarm & Do & Limit flag:**
280 280  
... ... @@ -295,21 +295,32 @@
295 295  
296 296  (% style="color:red" %)**Limit flag:**
297 297  
298 -Mode for setting threshold: 0~~5
383 +Mode for setting threshold: **0~~3**
299 299  
300 -0: does not use upper and lower limits
385 +**0:** does not use upper and lower limits
301 301  
302 -1: Use upper and lower limits
387 +**1:** Use upper and lower limits
303 303  
304 -2: is less than the lower limit value
389 +**2:** Less than the upper limit
305 305  
306 -3: is greater than the lower limit value
391 +**3: **Greater than the lower limit
307 307  
308 -4: is less than the upper limit
309 309  
310 -5: is greater than the upper limit
394 +(% style="color:blue" %)**Distance limit alarm count:**
311 311  
396 +People or objects are collected and counted within a limited distance.
312 312  
398 +The detection of a stationary person or object at each sampling time will be repeated three times, and the fourth sampling count will be added by 1.
399 +
400 +**Example:**
401 +
402 +**AT+DOL=1,500,244,**(% style="color:red" %)1(%%)**,120   **
403 +
404 +People or objects passing within the distance range of [244mm,500mm] are detected and counted every 120ms.
405 +
406 +If payload is: 0x56H, interrupt count =0x56H =86
407 +
408 +
313 313  (% style="color:blue" %)**Upper limit:**
314 314  
315 315  The upper limit of the threshold cannot exceed 2000mm.
... ... @@ -320,12 +320,12 @@
320 320  The lower limit of the threshold cannot be less than 3mm.
321 321  
322 322  
323 -=== 2.3.3 Decode payload in The Things Network ===
419 +== 2.4 Decode payload in The Things Network ==
324 324  
325 325  
326 326  While using TTN network, you can add the payload format to decode the payload.
327 327  
328 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LLDS12-LoRaWAN%20LiDAR%20ToF%20Distance%20Sensor%20User%20Manual/WebHome/1654592762713-715.png?rev=1.1||alt="1654592762713-715.png"]]
424 +[[image:image-20231206143515-1.png||height="534" width="759"]]
329 329  
330 330  
331 331  (((
... ... @@ -337,11 +337,11 @@
337 337  )))
338 338  
339 339  
340 -== 2.4 ​Show Data in DataCake IoT Server ==
436 +== 2.5 ​Show Data in DataCake IoT Server ==
341 341  
342 342  
343 343  (((
344 -[[DATACAKE>>url:https://datacake.co/]] provides a human friendly interface to show the sensor data, once we have data in TTN, we can use [[DATACAKE>>url:https://datacake.co/]] to connect to TTN and see the data in DATACAKE. Below are the steps:
440 +[[DATACAKE>>url:https://datacake.co/]] provides a human friendly interface to show the sensor data, onhuman-friendlya in TTN, we can use [[DATACAKE>>url:https://datacake.co/]] to connect to TTN and see the data in DATACAKE. Below are the steps:
345 345  )))
346 346  
347 347  
... ... @@ -354,25 +354,29 @@
354 354  )))
355 355  
356 356  
357 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS75%20-%20LoRaWAN%20Distance%20Detection%20Sensor%20User%20Manual/WebHome/1654592790040-760.png?rev=1.1||alt="1654592790040-760.png"]]
453 +[[image:image-20231207153532-6.png||height="562" width="861"]]
358 358  
359 359  
360 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS75%20-%20LoRaWAN%20Distance%20Detection%20Sensor%20User%20Manual/WebHome/1654592800389-571.png?rev=1.1||alt="1654592800389-571.png"]]
456 +[[image:image-20231207155940-8.png]]
361 361  
458 +For more detailed instructions, refer to the following instructions: [[Welcome - Datacake Docs>>url:https://docs.datacake.de/]]
362 362  
460 +[[image:image-20231207160733-11.png||height="429" width="759"]]
461 +
462 +
363 363  (% style="color:blue" %)**Step 3**(%%)**: Create an account or log in Datacake.**
364 364  
365 365  (% style="color:blue" %)**Step 4**(%%)**: Search the DS20L and add DevEUI.**
366 366  
367 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS75%20-%20LoRaWAN%20Distance%20Detection%20Sensor%20User%20Manual/WebHome/1654851029373-510.png?rev=1.1||alt="1654851029373-510.png"]]
467 +[[image:image-20231207160343-10.png||height="665" width="705"]]
368 368  
369 369  
370 370  After added, the sensor data arrive TTN V3, it will also arrive and show in Datacake.
371 371  
372 -[[image:image-20231129085201-1.png||height="515" width="961"]]
472 +[[image:image-20231129100454-2.png||height="501" width="928"]]
373 373  
374 374  
375 -== 2.5 Frequency Plans ==
475 +== 2.6 Frequency Plans ==
376 376  
377 377  
378 378  The DS20L uses OTAA mode and below frequency plans by default. If user want to use it with different frequency plan, please refer the AT command sets.
... ... @@ -410,7 +410,7 @@
410 410  == 3.3 Commands special design for DS20L ==
411 411  
412 412  
413 -These commands only valid for DS20L, as below:
513 +Below commands only valid for DS20L, as below:
414 414  
415 415  
416 416  === 3.3.1 Set Transmit Interval Time ===
... ... @@ -496,9 +496,10 @@
496 496  
497 497  * Example 2: Downlink Payload: 06000003  ~/~/  Set the interrupt mode to rising edge trigger
498 498  
499 -== 3.3.3 Set work mode ==
500 500  
600 +=== 3.3.3 Set work mode ===
501 501  
602 +
502 502  Feature: Switch working mode
503 503  
504 504  (% style="color:blue" %)**AT Command: AT+MOD**
... ... @@ -513,10 +513,11 @@
513 513  
514 514  (% style="color:blue" %)**Downlink Command:**
515 515  
516 -* **Example: **0x0A00  ~/~/  Same as AT+MOD=0
617 +* **Example: **0x0A01 ~/~/  Same as AT+MOD=1
517 517  
518 -* **Example:** 0x0A01  ~/~/  Same as AT+MOD=1
619 +* **Example:** 0x0A02  ~/~/  Same as AT+MOD=2
519 519  
621 +
520 520  === 3.3.4 Set threshold and threshold mode ===
521 521  
522 522  
... ... @@ -534,19 +534,37 @@
534 534  )))
535 535  |(% style="width:172px" %)AT+ DOL =1,1800,100,0,400|(% style="width:279px" %)Set only the upper and lower thresholds|(% style="width:118px" %)OK
536 536  
537 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
538 -|(% rowspan="11" style="color:blue; width:120px" %)**AT+DOL=5,1800,0,0,400**|(% rowspan="6" style="width:240px" %)The first bit sets the limit mode|(% style="width:150px" %)0: Do not use upper and lower limits
639 +(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:510px" %)
640 +|=(% style="width: 162px;background-color:#4F81BD;color:white" %)**Command Example**|=(% style="width: 193px;background-color:#4F81BD;color:white" %)**Function**|=(% style="width: 155px;background-color:#4F81BD;color:white" %) Parameter
641 +|(% rowspan="11" style="color:blue; width:120px" %)(((
642 +
643 +
644 +
645 +
646 +
647 +
648 +
649 +
650 +
651 +
652 +
653 +**AT+DOL=1,1800,3,0,400**
654 +)))|(% rowspan="4" style="width:240px" %)(((
655 +
656 +
657 +
658 +
659 +The first bit sets the limit mode
660 +)))|(% style="width:150px" %)0: Do not use upper and lower limits
539 539  |(% style="width:251px" %)1: Use upper and lower limits
540 -|(% style="width:251px" %)2: Less than the lower limit
662 +|(% style="width:251px" %)2:Less than the upper limit
541 541  |(% style="width:251px" %)3: Greater than the lower limit
542 -|(% style="width:251px" %)4: Less than the upper limit
543 -|(% style="width:251px" %)5: Greater than the upper limit
544 544  |(% style="width:226px" %)The second bit sets the upper limit value|(% style="width:251px" %)3~~2000MM
545 545  |(% style="width:226px" %)The third bit sets the lower limit value|(% style="width:251px" %)3~~2000MM
546 546  |(% rowspan="2" style="width:226px" %)The fourth bit sets the over-limit alarm or person or object count.|(% style="width:251px" %)0 Over-limit alarm, DO output is high
547 547  |(% style="width:251px" %)1 Person or object counting statistics
548 548  |(% style="width:226px" %)The fifth bit sets the sampling time|(% style="width:251px" %)(((
549 -0~~10000ms
669 +100~~10000ms
550 550  
551 551  
552 552  )))
... ... @@ -553,21 +553,42 @@
553 553  
554 554  (% style="color:blue" %)**Downlink Command: 0x07**
555 555  
556 -Format: Command Code (0x07) followed by 9bytes.
676 +Format: Command Code (0x07) followed by 9 bytes.
557 557  
558 -* Example 0: Downlink Payload: 070000000000000190  **~-~-->**  AT+MOD=0,0,0,0,400
678 +If the downlink payload=**07 01 0708 0064 00 0190**, it means set the END Node's limit mode to 0x01,upper limit value to 0x0708=1800(mm), lower limit value to 0x0064=100(mm), to over-limit alarm(0x00) ,the sampling time to 0x0190=400(ms), while type code is 0x07.
559 559  
680 +* Example 0: Downlink Payload: 07 00 0000 0000 00 0190  **~-~-->**  AT+MOD=0,0,0,0,400
681 +
560 560  * Example 1: Downlink Payload: 070107080064000190  **~-~-->**  AT+MOD=1,1800,100,0,400
561 561  
562 -* Example 2: Downlink Payload: 070200000064000190  **~-~-->**  AT+MOD=2,0,100,0,400
684 +* Example 2: Downlink Payload: 070200000064000190  **~-~-->**  AT+MOD=2,1800,100,0,400
563 563  
564 -* Example 3: Downlink Payload: 0703200000064000190  **~-~-->**  AT+MOD=3,1800,100,0,400
686 +* Example 3: Downlink Payload: 070300000064000190  **~-~-->**  AT+MOD=3,0,100,0,400
565 565  
566 -* Example 4: Downlink Payload: 070407080000000190  **~-~-->**  AT+MOD=4,0,100,0,400
688 +(% style="color:Red" %)**Note: The over-limit alarm is applied to MOD1 and MOD2.**
567 567  
568 -* Example 5: Downlink Payload: 070507080000000190  **~-~-->**  AT+MOD=5,1800,100,0,400
690 +**For example:**
569 569  
692 +* **AT+MOD=1**
570 570  
694 + **AT+DOL=1,500,244,**(% style="color:blue" %)0(%%)**,300**
695 +
696 +Send data according to the normal TDC time. If the mode limit is exceeded, the alarm flag is set to 1:
697 +
698 +[[image:image-20231211113204-2.png||height="292" width="1093"]]
699 +
700 +* **AT+MOD=2  **
701 +
702 + **AT+DOL=1,500,244,**(% style="color:blue" %)0(%%)**,300**
703 +
704 +If the mode limit is exceeded, the data is immediately uplink and the alarm flag is set to 1:
705 +
706 +[[image:image-20231211114932-3.png||height="277" width="1248"]]
707 +
708 +
709 +
710 +
711 +
571 571  = 4. Battery & Power Consumption =
572 572  
573 573  
... ... @@ -596,6 +596,7 @@
596 596  
597 597  * Update through UART TTL interface: **[[Instruction>>url:http://wiki.dragino.com/xwiki/bin/view/Main/UART%20Access%20for%20LoRa%20ST%20v4%20base%20model/#H1.LoRaSTv4baseHardware]]**.
598 598  
740 +
599 599  = 6. FAQ =
600 600  
601 601  == 6.1 What is the frequency plan for DS20L? ==
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