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Last modified by Xiaoling on 2025/04/27 16:45
From version 173.1
edited by Xiaoling
on 2022/06/15 10:09
Change comment: Uploaded new attachment "image-20220615100930-15.png", version {1}
To version 173.3
edited by Xiaoling
on 2022/06/15 10:11
Change comment: There is no comment for this version

Summary

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100 100  * IP66 Waterproof Enclosure
101 101  * 8500mAh Battery for long term use
102 102  
103 -
104 104  == 1.3  Suitable Container & Liquid ==
105 105  
106 106  * Solid Wall container such as: steel, iron, glass, ceramics, non-foaming plastics etc.
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110 110  ** Pure non metal material: <10 mm
111 111  * Pure liquid without irregular deposition.
112 112  
113 -
114 114  == 1.4  Mechanical ==
115 115  
116 116  [[image:image-20220615090910-1.png]]
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201 201  * Smart liquefied gas solution.
202 202  
203 203  
204 -
205 205  == 1.7  Precautions ==
206 206  
207 207  * At room temperature, containers of different materials, such as steel, glass, iron, ceramics, non-foamed plastics and other dense materials, have different detection blind areas and detection limit heights.
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209 209  * When the detected liquid level exceeds the effective detection value of the sensor, and the liquid level of the liquid to be measured shakes or tilts, the detected liquid height is unstable.
210 210  
211 211  
212 -
213 213  == 1.8  Pin mapping and power on ==
214 214  
215 215  
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369 369  * If the sensor value lower than 0x0014 (20mm), the sensor value will be invalid.
370 370  
371 371  
372 -
373 373  === 2.3.3  Interrupt Pin ===
374 374  
375 375  This data field shows if this packet is generated by interrupt or not. [[Click here>>||anchor="H3.2A0SetInterruptMode"]] for the hardware and software set up.
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423 423  
424 424  
425 425  
426 -== 2.4  Uplink Interval ==
421 +== 2.4  Downlink Payload ==
427 427  
428 -The LDDS75 by default uplink the sensor data every 20 minutes. User can change this interval by AT Command or LoRaWAN Downlink Command. See this link: [[Change Uplink Interval>>doc:Main.End Device AT Commands and Downlink Command.WebHome||anchor="H4.1ChangeUplinkInterval"]]
423 +By default, LDDS20 prints the downlink payload to console port.
429 429  
425 +[[image:image-20220615100930-15.png]]
430 430  
431 431  
428 +**Examples:**
429 +
430 +
431 +* (% style="color:blue" %)**Set TDC**
432 +
433 +If the payload=0100003C, it means set the END Node's TDC to 0x00003C=60(S), while type code is 01.
434 +
435 +Payload:    01 00 00 1E    TDC=30S
436 +
437 +Payload:    01 00 00 3C    TDC=60S
438 +
439 +
440 +* (% style="color:blue" %)**Reset**
441 +
442 +If payload = 0x04FF, it will reset the LDDS20
443 +
444 +
445 +* (% style="color:blue" %)**CFM**
446 +
447 +Downlink Payload: 05000001, Set AT+CFM=1 or 05000000 , set AT+CFM=0
448 +
449 +
450 +
432 432  == 2.5  ​Show Data in DataCake IoT Server ==
433 433  
434 434  (((