Version 273.10 by Xiaoling on 2022/06/20 15:13
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3 (% 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" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||height="15" role="presentation" title="Click and drag to move" width="15"]]
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7 [[image:image-20220617163631-2.jpeg||height="704" width="617"]]
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10 **Table of Contents:**
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14 (% 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" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||height="15" role="presentation" title="Click and drag to move" width="15"]]
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24
25 = 1.  Introduction =
26
27 == 1.1 ​ What is LTC2 LoRaWAN Temperature Transmitter ==
28
29 (((
30
31
32 (((
33 The Dragino LTC2 Industrial LoRaWAN Temperature Transmitter is designed to monitor temperature for different environment. It supports to read (% style="color:#4472c4" %)**PT100 probe**(%%) and convert the value to temperature and uplink to IoT server via LoRaWAN protocol.
34
35
36 LTC2 supports (% style="color:#4472c4" %)**Datalog feature**(%%). User can retrieve the sensor value via LoRaWAN downlink command.
37
38
39 LTC2 is powered by (% style="color:#4472c4" %)**8500mA Li-SOCI2 battery**(%%) for long time measurement. The battery can run 2~~10 years depends on the network environment and working mode.
40
41
42 Each LTC2 has (% style="color:#4472c4" %)**two internal 24-bit ADC interfaces** (%%)and are calibrated on 12 set resistors to make sure the accuracy measurement on wide range.
43
44
45 LTC2 is LoRaWAN v1.0.3 compatible. Each LTC2 is pre-load with a set of unique keys for LoRaWAN registration, register these keys to local LoRaWAN server and it will auto connect after power on.
46
47
48 [[image:image-20220617164020-3.png||height="450" width="1084"]]
49 )))
50
51
52 )))
53
54
55 == ​1.2  Features ==
56
57
58 * LoRaWAN v1.0.3 Class A
59 * max: 2 x monitor temperature channels
60 * Support 3 -wire PT-100
61 * 8500mAh Li-SOCI2 Battery
62 * Firmware upgrade via console
63 * Wall Mountable
64 * Configurable via LoRa or UART
65 * Datalog and retrieve via LoRaWAN
66 * Use pre-load PT100 probe or 3rd PT100 probe
67 * Factory calibration for different resistance range
68 * Support accuracy measure of resistance and upload
69 * Battery Monitoring and upload
70
71 (% style="display:none" %) ** **
72
73
74
75 == 1.3 ​ Applications ==
76
77 * Logistics and Supply Chain Management
78 * Food management
79 * Cold chains solution
80 * Industrial Monitoring and Control
81
82 == 1.4 Hardware Change log ==
83
84 LTC2 v1.0: Release.
85
86
87 == 1.5  Pin Definitions and Switch ==
88
89 (% 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" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]][[image:1655456444657-750.png]](% title="Click and drag to resize" %)​
90
91 === (% title="Click and drag to resize" %)1.5.1  J(%%)umper JP2 ( Power ON)(% 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"]][[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% 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"]][[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% 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" %)​(%%)​ ===
92
93 Put a jumper on JP2 will power on the LTC2.
94
95
96 === 1.5.2  LED ===
97
98 The LED will flash in below case.
99
100 1. Send an uplink packet
101
102 === 1.5.3  PT100 Interfaces ===
103
104 There are two independent channels to connect 2 x PT100 probes.
105
106 Each channel has 3-wire connection for 3-wire PT100 probes.
107
108
109 === 1.5.4  Reset Button ===
110
111 Press this button will reboot the LTC2
112
113
114 === 1.6  Probe Variant ===
115
116 LTC2 provide default probe version. See below for the variant:
117
118 (% style="background-color:#f7faff; width:505px" %)
119 |=(% style="width: 70px;" %)**Model**|=(% style="width: 162px;" %)**Photo**|=(% style="width: 314px;" %)**Description**
120 |(% style="width:70px" %)LTC2-SI|(% style="width:162px" %)[[image:1655458404877-785.png]]|(% style="width:314px" %)(((
121 Standard IP68 Probe Version
122
123 * LTC2 with 1 x Standard IP68 PT100 probe.
124 * Installation: Insert
125 * Cable Length : 2m
126 * PT100 Class : Class A
127 * Probe Dimension: 4*30mm
128 * Measure Range: -50 ~~ 200 °C
129 * Suitable Environment: General environment
130 )))
131 |(% style="width:70px" %)LTC2-LT|(% style="width:162px" %)[[image:image-20220617172838-2.png]]|(% style="width:314px" %)(((
132 Low Temperature Version
133
134 * LTC2 with 1 x Low Temperature PT100 probe.
135 * Installation: Insert
136 * Cable Length : 2m
137 * PT100 Class : Class A
138 * Probe Dimension: 4*30mm
139 * Measure Range: -196 ~~ 150 °C
140 * Suitable Environment: Low temperature measurement, such as COVID vaccine transport
141 )))
142 |(% style="width:70px" %)LTC2-FS|(% style="width:162px" %)[[image:image-20220617172838-3.png]]|(% style="width:314px" %)(((
143 Food Safety Version
144
145 * LTC2 with 1 x Food Safety PT100 probe.
146 * Installation: Insert
147 * Cable Length : 2m
148 * PT100 Class : Class A
149 * Probe Dimension: 4*150mm
150 * Measure Range: -50 ~~ 200 °C
151 * Suitable Environment: Food temperature measurement
152 )))
153 |(% style="width:70px" %)LTC2-FT|(% style="width:162px" %)[[image:image-20220617172838-4.png]]|(% style="width:314px" %)(((
154 Flat Type Version
155
156 * LTC2 with 1 x Flat Type PT100 probe.
157 * Installation: Attached
158 * Cable Length : 2m
159 * PT100 Class : Class A
160 * Probe Dimension: 8*25mm
161 * Measure Range: -50 ~~ 200 °C
162 * Suitable Environment: Attached to the measure point.
163 )))
164 |(% style="width:70px" %)LTC2-HT|(% style="width:162px" %)[[image:image-20220617172838-5.png]]|(% style="width:314px" %)(((
165 High Temperature Version
166
167 * LTC2 with 1 x high temperature PT100 probe.
168 * Installation: Insert
169 * Cable Length : 3m
170 * PT100 Class : Class A
171 * Probe Dimension: 4*30mm
172 * Measure Range: -70 ~~ 550 °C
173
174 Suitable Environment: High Temperature
175 )))
176 |(% style="width:70px" %)LTC2-NA|(% style="width:162px" %)[[image:image-20220617172838-6.png]]|(% style="width:314px" %)(((
177 No Probe version:
178
179 * User can connect to their own PT100 Probe
180 * Grand Hole: M12
181 * Suitable Environment:
182
183 Connect to customized probe
184 )))
185
186 = 2.  How to use LTC2? =
187
188 == 2.1  Connect to PT100 sensors ==
189
190 LTC2 has different probe option provided for ordering, if user has LTC2 with probe, just skip this step. If user want to connect to a 3^^rd^^ party PT100 probe, please see [[CONNECT A 3(% class="wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink" %)^^rd^^ PARTY PT100 probe>>path:#Customized_PT100]](%%).
191
192
193 === 2.2  How it works? ===
194
195 (((
196 The LTC2 is working in LoRaWAN OTAA Class A mode. Each LTC2 is shipped with a worldwide unique set of OTAA and ABP keys. User needs to input the OTAA or ABP keys in the LoRaWAN network server so to register. LTC2 will join the LoRaWAN network and start to transmit data. The default period for each uplink is **20 minutes**.
197
198 On each uplink, LTC2 will check its two ADC Interfaces and get the temperature from the sensor and send out to server.
199 )))
200
201
202
203 == 2.3  ​Quick guide to connect to LoRaWAN server (OTAA) ==
204
205 (((
206 Here is an example for how to join the [[TTN v3 LoRaWAN >>url:https://eu1.cloud.thethings.network/]]Server. Below is the network structure, in this demo we use [[DLOS8>>url:https://www.dragino.com/products/lora-lorawan-gateway/item/140-lg308.html]] as LoRaWAN gateway.
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208 (% 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" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]][[image:1655687566853-908.png]](% title="Click and drag to resize" %)​[[image:1655687927369-781.png]]
209 )))
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211 (% title="Click and drag to resize" %)​(%%)The DLOS8 is already set to connect to [[TTN >>url:https://eu1.cloud.thethings.network/]]. Rest we need to is register the LTC2 to TTN v3:(% 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"]][[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% 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" %)​(%%)​
212
213 (((
214
215
216 === 2.3.1 Step 1: Create a device in TTN with the OTAA keys from LTC2 ===
217
218
219
220 Below is TTN screen shot:
221
222 * Create Application first.
223 * Manually Add a LoRaWAN End Device device. Choose **OTAA** and **MAC v1.0.3**
224
225 [[image:1655690861020-685.png]]
226
227
228 [[image:1655690877643-259.png]]
229
230
231 Input the OTAA keys for LTC2.
232
233 Each LTC2 is shipped with a sticker with the default device EUI as below:
234
235 (% aria-label="image-20220607170145-1.jpeg image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220607170145-1.jpeg||data-widget="image"]]
236
237
238 * **Input these keys to device portal.**
239
240 [[image:image-20220620100853-1.png]]
241
242
243
244 * **Choose the Frequency band for this end node.**
245
246 [[image:image-20220620100853-2.png]]
247
248
249 * **Input APP Key in this page as well. **
250
251 [[image:image-20220620100853-3.png]]
252
253
254
255 Add payload formatter So TTNv3 knows how to parse the LTC2 upload value.
256
257
258 The payload for TTN can be found at below link:
259
260 https:~/~/www.dragino.com/downloads/downloads/LoRa_End_Node/LTC2/Decoder/
261
262 [[image:image-20220620100853-4.png]]
263
264
265
266
267 === 2.3.2  Step 2: Power on LTC2 ===
268
269
270 LTC2 is power off when ship from factory.
271
272 Put a Jumper on JP2 to power on the device.
273
274
275 [[image:1655691076464-442.png]]
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279 After power on, LTC2 will auto join to TTN network via the LoRaWAN coverage by DLOS8. After join success, LTC2 will start to update message to IoT server.
280
281 Below is an example uplink message which shows the LTC2 is sending Join Request to TTNv3.
282
283
284 [[image:1655691086647-147.png]]
285
286
287 After join successful, LTC2 will send uplink message with the sensor value.
288
289 [[image:1655691100066-163.png]]
290
291 Above value shows Channel1 detect 25.94 degree. There is no PT100 connected on Channel 2, so it shows -327.67.
292
293
294 )))
295
296
297 == 2.4  ​Uplink Payload ==
298
299 (((
300 (((
301 (((
302 Below is the uplink payload which shows
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307 (((
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309 )))
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311 (% border="1" cellspacing="10" style="background-color:#ffffcc; width:510px" %)
312 |=(% style="width: 62.5px;" %)(((
313 **Size (bytes)**
314 )))|=(% style="width: 62.5px;" %)**2**|=**1**|=2|=2|=**4**
315 |(% style="width:62.5px" %)**Value**|(((
316 [[BAT>>||anchor="H2.4.1A0BatteryInfo"]]
317
318
319 )))|(((
320 [[Status & EXT>>||anchor="H"]]
321 )))|(((
322 [[Channel 1 data>>||anchor="H"]]
323 )))|(((
324 [[Channel 2 data>>||anchor="H"]]
325 )))|(((
326 [[Unix TimeStamp>>||anchor="H"]]
327 )))
328
329 (% 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" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]]
330
331
332 (((
333 === (% style="color:blue" %)**BAT**(%%) ===
334
335 (% class="wikigeneratedid" %)
336 Ex1: 0x0E3C ⇒ 3644 (mV) = 3.644 V
337
338 (% class="wikigeneratedid" %)
339
340 )))
341
342 (((
343 === (% style="color:blue" %)**Status & EXT**(%%) ===
344 )))
345
346 [[image:image-20220620103724-6.png]]
347
348 * (% style="color:#037691" %)**Poll Message Flag**(%%):  1: This message is a poll message reply, 0: means this is a normal uplink.
349 * (% style="color:#037691" %)**Sync time OK**(%%):  1: Set time ok，0: N/A. After time SYNC request is send, device will set this bit to 0 until got the time stamp from application server.
350 * (% style="color:#037691" %)**Unix Time Request**(%%):  1: Request server downlink Unix time, 0 : N/A. In this mode, LTC2 will set this bit to 1 every 10 day to request a time SYNC. (AT+SYNCMOD to set this)
351 * (% style="color:#037691" %)**EXT**(%%):  The decode method for Channel 1 data and Channel 2 data
352 ** 0b(0001): Upload PT100 temperature, with 2 decimals, range:  **-327.67 ~~ 327.67 ℃**
353 ** 0b(0010): Upload PT100 temperature, with 1 decimals, range: ** -3276.7 ~~ 3276.7 ℃**
354 ** 0b(0011): Upload Resistance instead of Temperature, range:  **-327.67~~ 327.67 ohm**
355
356 (((
357 (% class="wikigeneratedid" %)
358
359
360
361 === (% style="color:blue" %)**Channel1 data and Channel 2 data**(%%) ===
362 )))
363
364 (((
365 (% class="wikigeneratedid" %)
366 [[image:image-20220620103651-5.png]]
367
368
369 === (% style="color:blue" %)**Unix TimeStamp**(%%) ===
370 )))
371
372 Refer to Datalog feature.
373
374 (% style="color:#037691" %)**Example Uplink Payload**:
375
376 **Uplink payload example 1:**  0CE9011422EC2D6073E83B
377
378 * Bat voltage:0x0CE9 =3305mV
379 * Ext=0x01
380 * Channel1 temp=0x1422/100=51.54 ℃
381 * Channel2 temp=(0xEC2D-65536)/100=-50.75 ℃
382 * System timestamp=0x6073E83B= 1618208827(UTC)
383
384 **Uplink payload example 2: ** 0CED020203FE056073E697
385
386 * Bat voltage:0x0CED =3309mV
387 * Ext=0x02
388 * Channel1 temp=0x0203/10=515.4 ℃
389 * Channel2 temp=(0xFE05-65536)/10=-507.5 ℃
390 * System timestamp=0x6073E697=1618208407(UTC)
391
392 **Uplink payload example 3 :**  0CE9032EDE1F406073E967
393
394 * Bat voltage:0x0CE9 =3305mV
395 * Ext=0x03
396 * Channel1 res=0x2EDE/100=119.98 ohm
397 * Channel2 res=0x1F40/100=80.00 ohm
398 * System timestamp=0x6073E967= 1618209127(UTC)
399
400 (% 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" %)​(% 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"]][[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% 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" %)​(%%)​
401
402
403
404 == 2.5  Datalog Feature ==
405
406 LTC2 will auto get the time from LoRaWAN server during Join, and each uplink will then include a timestamp. When user want to retrieve sensor value, user can send a poll command from the IoT platform to ask sensor to send value in the required time slot.
407
408
409 === 2.5.1  Unix TimeStamp ===
410
411
412 LTC2 uses Unix TimeStamp format based on
413
414 [[image:1655694312268-590.png]]
415
416 Users can get this time from the link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/]] :
417
418 Below is the converter example
419
420 [[image:1655694332878-202.png]]
421
422 So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set current time 2021 – Jan ~-~- 29 Friday 03:03:25
423
424
425 === 2.5.2  Set Device Time ===
426
427 (((
428 (((
429 There are two ways to set the device's time:
430 )))
431 )))
432
433 (((
434 (((
435 (% style="color:#4f81bd" %)**1. Through LoRaWAN MAC Command (Default settings)**
436 )))
437 )))
438
439 (((
440 (((
441 Users need to set SYNCMOD=1 to enable sync time via the MAC command.
442 )))
443 )))
444
445 (((
446 Once LTC2 Joined LoRaWAN network, it will send the MAC command (DeviceTimeReq) and server will reply with (DeviceTimeAns) to send the current time to LTC2. If LTC2 fails to get the time from server, LTC2 will use the internal time and wait for next time request (AT+SYNCTDC to set time request period, default is 10 days).
447
448
449 )))
450
451 (((
452 (((
453 (% style="color:red" %)**Note**(%%): (% style="color:#4f81bd" %)LoRaWAN Server needs to support LoRaWAN v1.0.3(MAC v1.0.3) (%%)or higher to support this MAC command feature, Chirpstack,TTN v3 and loriot support but TTN 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 v2 if SYNCMOD=1.
454
455
456 )))
457
458 (((
459 (% style="color:#4f81bd" %)**2. Manually Set Time**
460 )))
461
462 (((
463 Users need to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.
464 )))
465 )))
466
467
468
469 === 2.5.3  Poll sensor value ===
470
471 Users can poll sensor values based on timestamps. Below is the downlink command.
472
473 (% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:453.989px" %)
474 |=(% colspan="4" style="width: 451px;" %)**Downlink Command to poll Open/Close status (0x31)**
475 |(% style="width:59px" %)**1byte**|(% style="width:126px" %)**4bytes**|(% style="width:138px" %)**4bytes**|(% style="width:128px" %)**1byte**
476 |(% style="width:59px" %)31|(% style="width:126px" %)Timestamp start|(% style="width:138px" %)Timestamp end|(% style="width:128px" %)Uplink Interval
477
478 (((
479
480 )))
481
482 (((
483 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.
484
485 For example, downlink command[[image:image-20220620111056-7.png]]
486 )))
487
488 (((
489 Is to check 2021/5/16 01:00:00 to 2021/5/16 02:00:00's data
490
491 Uplink Internal =10s，means LTC2 will send one packet every 10s. range 5~~255s.
492 )))
493
494
495
496 === 2.5.4  Datalog Uplink payload ===
497
498 When server senser a datalog polling to LTC2, LTC2 will reply with one or more uplink messages as reply. Each uplink message includes multiply data entries value. Each entry has the same payload format as[[ normal uplink payload>>path:#uplink_paylpad]].
499
500
501 **Note:**
502
503 * Poll Message Flag is set to 1.
504 * Each data entry is 11 bytes, to save airtime and battery, devices will send max bytes according to the current DR and Frequency bands.
505
506 For example, in US915 band, the max payload for different DR is:
507
508 a)      DR0: max is 11 bytes so one entry of data
509
510 b)      DR1: max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
511
512 c)      DR2: total payload includes 11 entries of data
513
514 d)  DR3: total payload includes 22 entries of data.
515
516 If devise doesn’t have any data in the polling time. Device will uplink 11 bytes of 0   
517
518
519 **Example:**
520
521 If LTC2 has below data inside Flash:
522
523 [[image:image-20220620134635-9.png]]
524
525
526 If user send below downlink command:
527
528 **3160A06E9060A098C00A**
529
530 Where : Start time: 60A06E90 = time 21/5/16 01:00:00
531
532 Stop time: 60A098C0 = time 21/5/16 04:00:00
533
534
535 LTC2 will uplink this payload.
536
537
538 [[image:image-20220620111850-8.png]]
539
540 (% style="color:red" %)**0E64410B49800160A072B8**(%%)0E61410B3F800160A077680E61410B33800160A07C180E64410B2C800160A080C80E64410B28800160A085780E64410B24800160A08A280E64410B23800160A08ED80E64410B22800160A09388(% style="color:red" %)**0E64410B1E800160A09838**
541
542
543 Where the first 11 bytes is for the first entry:
544
545 (% style="color:red" %)**0E64410B49800160A072B8**
546
547 Bat voltage:0x0E64 =3684mV
548
549
550 poll message flag & Ext=0x41,means reply data,Ext=1
551
552 Channel1 temp=0x0B49/100=28.89℃
553
554 Channel2 temp=0x8001/100=-327.67℃
555
556 System timestamp=0x60A072B8= 1621127864(UTC)
557
558
559
560 == 2.6  ​Alarm Mode ==
561
562 (((
563 LTC2 can monito the temperature in every CTTEMP time, when the temperature exceed the limit , it will uplink the sensor value immediately.
564
565 Detail commands see:
566
567 [[(% class="wikiinternallink wikiinternallink wikiinternallink wikiinternallink" %)**Enable Alarm Mode.**>>path:#Enable_Alarm]]
568
569 [[(% class="wikiinternallink wikiinternallink wikiinternallink wikiinternallink" %)**Config Alarm Sampling Time.**>>path:#Alarm_Sampling_Time]]
570
571 [[(% class="wikiinternallink wikiinternallink wikiinternallink wikiinternallink" %)**Set Alarm Threshold**>>path:#Alarm_ThresHold]]
572
573
574 )))
575
576
577 = 3.  Configure LTC2 via AT Command or LoRaWAN Downlink =
578
579 (((
580 (((
581 Use can configure LTC2 via AT Command or LoRaWAN Downlink.
582 )))
583 )))
584
585 * (((
586 (((
587 AT Command Connection: See [[FAQ>>||anchor="H6.A0FAQ"]].
588 )))
589 )))
590 * (((
591 (((
592 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
593 )))
594 )))
595
596 (((
597 (((
598
599 )))
600
601 (((
602 There are two kinds of commands to configure LTC2, they are:
603 )))
604 )))
605
606 * (((
607 (((
608 (% style="color:#4f81bd" %)** General Commands**.
609 )))
610 )))
611
612 (((
613 (((
614 These commands are to configure:
615 )))
616 )))
617
618 * (((
619 (((
620 General system settings like: uplink interval.
621 )))
622 )))
623 * (((
624 (((
625 LoRaWAN protocol & radio related command.
626 )))
627 )))
628
629 (((
630 (((
631 They are same for all Dragino Device which support DLWS-005 LoRaWAN Stack. 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]]
632 )))
633 )))
634
635 (((
636 (((
637
638 )))
639 )))
640
641 * (((
642 (((
643 (% style="color:#4f81bd" %)** Commands special design for LTC2**
644 )))
645 )))
646
647 (((
648 (((
649 These commands only valid for LTC2, as below:(% title="Click and drag to resize" %)​
650 )))
651 )))
652
653 (% 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" %)​
654
655
656
657 == 3.1  Set Transmit Interval Time ==
658
659 Feature: Change LoRaWAN End Node Transmit Interval.
660
661 (% style="color:#037691" %)**AT Command: AT+TDC**
662
663 (% aria-label="image-20220610173409-7.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220610173409-7.png||data-widget="image"]](% 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" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% 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" %)​(% 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"]][[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% 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" %)​(%%)​
664
665
666 (((
667 (% style="color:#037691" %)**Downlink Command: 0x01**
668 )))
669
670 (((
671 (((
672 Format: Command Code (0x01) followed by 3 bytes time value.
673
674 (((
675 If the downlink payload=0100003C, it means set the END Node's Transmit Interval to 0x00003C=60(S), while type code is 01.
676 )))
677
678 * Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
679 * Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
680 )))
681 )))
682
683
684
685
686 == 3.2  Enable PT100 channels ==
687
688 Feature: Enable PT100 channels. Default only Enable Channel 1
689
690 (% style="color:#037691" %)**AT Command: AT+ENPTCHNUM**
691
692 (% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:494px" %)
693 |=(% style="width: 165px;" %)**Command Example**|=(% style="width: 254px;" %)**Function**|=(% style="width: 73px;" %)**Response**
694 |(% style="width:165px" %)AT+ENPTCHNUM=?|(% style="width:254px" %)Get current ENPTCHNUM settings|(% style="width:73px" %)(((
695 1
696
697
698 OK
699 )))
700 |(% style="width:165px" %)AT+ ENPTCHNUM =1|(% colspan="2" style="width:327px" %)Enable channel 1
701 |(% style="width:165px" %)AT+ ENPTCHNUM =2|(% colspan="2" style="width:327px" %)Enable channel 1 and 2
702
703
704 (% style="color:#037691" %)**Downlink Command: 0xA1**
705
706 Total bytes: 2 bytes
707
708 Example:
709
710 * 0xA101: same as AT+ENPTCHNUM =1
711 * 0xA102: same as AT+ENPTCHNUM =2
712
713
714
715 == 3.3  Set External Sensor Mode ==
716
717 (((
718 Feature: Change External Sensor Mode.
719 )))
720
721 (((
722 (% style="color:#037691" %)**Downlink Command: AT+EXT**
723 )))
724
725 (% 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" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% 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" %)​(% 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"]][[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% 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" %)​(%%)​
726
727 (% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:428px" %)
728 |(% style="width:155px" %)**Command Example**|(% style="width:180px" %)**Function**|(% style="width:90px" %)**Response**
729 |(% style="width:155px" %)AT+EXT=?|(% style="width:180px" %)Get current EXT settings|(% style="width:90px" %)(((
730 1
731
732
733 OK
734 )))
735 |(% style="width:155px" %)AT+EXT=1|(% colspan="2" style="width:270px" %)Set EXT to 0b(0001)
736 |(% style="width:155px" %)AT+EXT=2|(% colspan="2" style="width:270px" %)Set EXT to 0b(0010)
737 |(% style="width:155px" %)AT+EXT=3|(% colspan="2" style="width:270px" %)Set EXT to 0b(0011)
738
739
740 (% style="color:#037691" %)**Downlink Command: 0xA2**
741
742 Total bytes: 2 bytes
743
744 Example:
745
746 * 0xA201: same as AT+EXT=1
747
748
749
750 == 3.4 Quit AT Command ==
751
752 Feature: Quit AT Command mode, so user need to input password again before use AT Commands.
753
754 (% style="color:#037691" %)**AT Command: AT+DISAT**
755
756 (% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:446px" %)
757 |=(% style="width: 161px;" %)**Command Example**|=(% style="width: 193px;" %)**Function**|=(% style="width: 87px;" %)**Response**
758 |(% style="width:161px" %)AT+DISAT|(% style="width:193px" %)Quit AT Commands mode|(% style="width:87px" %)OK
759
760
761 (% style="color:#037691" %)**Downlink Command:**
762
763 No downlink command for this feature.
764
765
766
767 == 3.5 Set system time ==
768
769 Feature: Set system time, unix format. [[See here for formmat detail.>>path:#TimeStamp]]
770
771 (% style="color:#037691" %)**AT Command:**
772
773 (% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:506px" %)
774 |=(% style="width: 218px;" %)**Command Example**|=(% style="width: 285px;" %)**Function**
775 |(% style="width:218px" %)AT+TIMESTAMP=1611104352|(% style="width:285px" %)(((
776 OK
777
778 Set System time to 2021-01-20 00:59:12
779 )))
780
781
782 (% style="color:#037691" %)**Downlink Command:**
783
784 0x306007806000  ~/~/ Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
785
786
787
788 == 3.6 Set Time Sync Mode ==
789
790 Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
791
792
793 SYNCMOD is set to 1 by default. If user want to set a different time from LoRaWAN server, user need to set this to 0.
794
795
796 (% style="color:#037691" %)**AT Command:**
797
798 (% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:473px" %)
799 |=(% style="width: 157px;" %)**Command Example**|=(% style="width: 313px;" %)**Function**
800 |(% style="width:157px" %)AT+SYNCMOD=1|(% style="width:313px" %)Enable Sync system time via LoRaWAN MAC Command (DeviceTimeReq)
801
802
803 (% style="color:#037691" %)**Downlink Command:**
804
805 0x28 01 ~/~/ Same As AT+SYNCMOD=1
806
807 0x28 00 ~/~/ Same As AT+SYNCMOD=0
808
809
810
811 == 3.7 Set Time Sync Interval ==
812
813 Feature: Define System time sync interval. SYNCTDC default value: 10 days.
814
815 (% style="color:#037691" %)**AT Command:**
816
817 (% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:469px" %)
818 |=**Command Example**|=(% style="width: 306px;" %)**Function**
819 |AT+SYNCTDC=0x0A|(% style="width:306px" %)Set SYNCTDC to 10 (0x0A), so the sync time is 10 days.
820
821
822 (% style="color:#037691" %)**Downlink Command:**
823
824 0x29 0A ~/~/ Same as AT+SYNCTDC=0x0A
825
826
827
828 == 3.8 Retrieve data ==
829
830 Feature: Retrieval data for specify time slot.
831
832 (% style="color:#037691" %)**AT Command**(%%)**:**
833
834 No AT Command, only valid for downlink command.
835
836
837 (% style="color:#037691" %)**Downlink Command:**
838
839 [[See Poll Sensor Value>>path:#Poll_Sensor]].
840
841
842
843 == 3.9 Enable Alarm mode ==
844
845 Feature: Enable Alarm Mode.
846
847 (% style="color:#037691" %)**AT Command: AT_WMOD**
848
849 Total bytes: 2
850
851 Example:
852
853 0xA500: AT+WMOD=0(default)
854
855 0xA501: AT+WMOD=1(alarm mode)
856
857
858 (% style="color:#037691" %)**Downlink Command:**
859
860 [[See Poll Sensor Value>>path:#Poll_Sensor]].
861
862
863
864 == 3.10 Alarm check time ==
865
866 Feature: The time interval to check sensor value for Alarm.
867
868 (% style="color:#037691" %)**AT Command: AT+CITEMP**
869
870 Total bytes: 3
871
872 Example:
873
874 0xA60001: AT+CITEMP=1(default)
875
876 Set collection interval in 1min,only in alarm mode
877
878
879 (% style="color:#037691" %)**Downlink Command:**
880
881 [[See Poll Sensor Value>>path:#Poll_Sensor]].
882
883
884
885 == 3.11 Set Alarm Threshold ==
886
887 Feature: Set Alarm Threshold.
888
889 (% style="color:#037691" %)**AT Command: AT+ARTEMP**
890
891 Total bytes: 9  Unit: ℃
892
893 Example:
894
895 A7FF380320FF380320
896
897 AT+ARTEMP=-200,800,-200,800
898
899
900 A7000A0064000A0065
901
902 AT+ARTEMP=10,100,10,101
903
904 Channel 1 operating temp:10~~100
905
906 Channel 2 operating temp:10~~101
907
908
909 (% style="color:#037691" %)**Downlink Command:**
910
911 [[See Poll Sensor Value>>path:#Poll_Sensor]].
912
913
914
915 == 3.12 Set Calibrate Value ==
916
917 Feature: Set Calibrate value for PT100 cable.  Detail of use of this command please see [[connect to a customized PT100 Probe>>path:#Customized_PT100]].
918
919 (% style="color:#037691" %)**AT Command: AT+RCABLE**
920
921 Total bytes: 5
922
923 Example:
924
925 AT+RCABLE=296,300
926
927 Channel 1 rcable=0x0128/1000=0.296R
928
929 Channel 2 rcable=0x012C/1000=0.300R
930
931
932 (% style="color:#037691" %)**Downlink Command:**
933
934 0xA80128012C  ~-~->  Same as AT+RCABLE=296,300
935
936
937
938 == 3.13 Poll Calibrate Value ==
939
940 Feature: Poll Calibrate value. LTC2 will reply with this command send an uplink to server.
941
942 (% style="color:#037691" %)**AT Command: No AT Command.**
943
944
945 (% style="color:#037691" %)**Downlink Command:**
946
947 Example: A901
948
949 End nodes will send racable config to server
950
951 Like uplink payload: 010128012C
952
953
954
955 == 3.14 Print data entries base on page ==
956
957 Feature: Print the sector data from start page to stop page (max is 400 pages).
958
959 (% style="color:#037691" %)**AT Command: AT+PDTA**
960
961 [[image:image-20220620145822-10.png]]
962
963
964 (% style="color:#037691" %)**Downlink Command:**
965
966 No downlink commands for feature
967
968
969
970 == 3.15 Print last few data entries ==
971
972 Feature: Print the last few data entries
973
974 (% style="color:#037691" %)**AT Command: AT+PLDTA**
975
976 [[image:image-20220620145916-11.png]]
977
978
979 (% style="color:#037691" %)**Downlink Command:**
980
981 No downlink commands for feature
982
983
984
985 == 3.16 Clear Flash Record ==
986
987 Feature: Clear flash storage for data log feature.
988
989 (% style="color:#037691" %)**AT Command: AT+CLRDTA**
990
991 (% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:511px" %)
992 |=(% style="width: 157px;" %)**Command Example**|=(% style="width: 136px;" %)**Function**|=(% style="width: 213px;" %)**Response**
993 |(% style="width:157px" %)AT+CLRDTA|(% style="width:136px" %)Clear date record|(% style="width:213px" %)(((
994 Clear all stored sensor data…
995
996 OK
997 )))
998
999 (% style="color:#037691" %)**Downlink Command: 0xA3**
1000
1001 * Example: 0xA301 ~/~/Same as AT+CLRDTA
1002
1003
1004 = 4. Battery & How to replace =
1005
1006 == 4.1 Battery Type ==
1007
1008 (((
1009 LTC2 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.
1010 )))
1011
1012 (((
1013 The discharge curve is not linear so can't simply use percentage to show the battery level. Below is the battery performance.
1014 )))
1015
1016 (% aria-label="1654593587246-335.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1654593587246-335.png||data-widget="image"]](% 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" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% 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; left:0px; top:-15px" 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"]][[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​(% aria-label="Data URI image image widget" contenteditable="false" role="region" style="background:url(~"http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png~") rgba(220, 220, 220, 0.5); left:0px; top:-15px" tabindex="-1" %)​(%%)​
1017
1018
1019 Minimum Working Voltage for the LTC2:
1020
1021 LTC2:  3.0v ~~ 3.6v
1022
1023
1024
1025 == 4.2 Replace Battery ==
1026
1027 (((
1028
1029
1030 Any battery with 3.6v can be a replacement. We recommend to use Li-SOCl2 Battery.
1031 )))
1032
1033 (((
1034 And make sure the positive and negative pins match.
1035 )))
1036
1037
1038
1039 == 4.3 Power Consumption Analyze ==
1040
1041 (((
1042 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.
1043 )))
1044
1045 (((
1046 Instruction to use as below:
1047 )))
1048
1049
1050 **Step 1 :**  Downlink the up-to-date DRAGINO_Battery_Life_Prediction_Table.xlsx from:
1051
1052 [[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/]]
1053
1054
1055 **Step 2 :**  Open it and choose
1056
1057 * Product Model
1058 * Uplink Interval
1059 * Working Mode
1060
1061 And the Life expectation in difference case will be shown on the right.
1062
1063 (% aria-label="1654593605679-189.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1654593605679-189.png||data-widget="image"]](% 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" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% 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"]][[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% 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; left:0px; top:-15px" 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:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png) rgba(220, 220, 220, 0.5); left:0px; top:-15px" tabindex="-1" 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; left:0px; top:-15px" 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"]][[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​(% aria-label="Data URI image image widget" contenteditable="false" role="region" style="background:url(~"http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png~") rgba(220, 220, 220, 0.5); left:0px; top:-15px" tabindex="-1" %)​(%%)​
1064
1065
1066
1067 = 5.  Firmware Change Log and Upload Firmware =
1068
1069
1070 User can use ST-Link v2 to upgrade firmware into LTC2 for bug fix or new features. The hardware connection for upgrade firmware is as below:
1071
1072
1073 **Connection:**
1074
1075 * (% style="background-color:yellow" %)**ST-LINK v2 GND  <~-~->  LTC2 GND**
1076 * (% style="background-color:yellow" %)**ST-LINK v2 RESET  <~-~->  LTC2 NRST**
1077 * (% style="background-color:yellow" %)**ST-LINK v2 SWCLK  <~-~->  LTC2 SWCLK**
1078 * (% style="background-color:yellow" %)**ST-LINK v2 SWDIO  <~-~->  LTC2 SWDIO**
1079 * (% style="background-color:yellow" %)**LTC2 power must be on.  **
1080
1081
1082 **Firmware Location and Change Log:**
1083
1084 [[http:~~/~~/www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LTC2/Firmware/>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LTC2/Firmware/]]
1085
1086
1087
1088 = 6.  FAQ =
1089
1090
1091
1092
1093
1094
1095
1096 == 6.3  What is the frequency range of LTC2 LoRa part? ==
1097
1098 Different LTC2 version supports different frequency range, below is the table for the working frequency and recommend bands for each model:
1099
1100 (% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:665px" %)
1101 |=**Version**|=(% style="width: 73px;" %)**LoRa IC**|=(% style="width: 194px;" %)**Working Frequency**|=(% style="width: 165px;" %)**Best Tune Frequency**|=(% style="width: 159px;" %)**Recommend Bands**
1102 |**433**|(% style="width:73px" %)SX1278|(% style="width:194px" %)Band2(LF): 410 ~~525 Mhz|(% style="width:165px" %)433Mhz|(% style="width:159px" %)CN470/EU433
1103 |**868**|(% style="width:73px" %)SX1276|(% style="width:194px" %)Band1(HF):862~~1020 Mhz|(% style="width:165px" %)868Mhz|(% style="width:159px" %)EU868/IN865/RU864
1104 |**915**|(% style="width:73px" %)SX1276|(% style="width:194px" %)Band1(HF):862 ~~1020 Mhz|(% style="width:165px" %)915Mhz|(% style="width:159px" %)(((
1105 AS923/AU915/
1106
1107 KR920/US915
1108 )))
1109
1110
1111
1112 == 6.4  How to change the LoRa Frequency Bands/Region ==
1113
1114 You can follow the instructions for [[how to upgrade image>>||anchor="H2.9A0200BFirmwareChangeLog"]].
1115 When downloading the images, choose the required image file for download. ​
1116
1117
1118
1119 = 7.  Trouble Shooting =
1120
1121 == 7.1  AT Command input doesn't work ==
1122
1123 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.
1124
1125 (((
1126
1127 )))
1128
1129
1130 = 8.  Order Info =
1131
1132 == 8.1  Main Device LDDS04 ==
1133
1134 Part Number **:** (% style="color:blue" %)**LDDS04-XX**
1135
1136
1137 (% style="color:blue" %)**XX**(%%)**: **The default frequency band
1138
1139 * (% style="color:red" %)**AS923 **(%%)**:** LoRaWAN AS923 band
1140 * (% style="color:red" %)**AU915 **(%%)**:** LoRaWAN AU915 band
1141 * (% style="color:red" %)**EU433 **(%%)**:** LoRaWAN EU433 band
1142 * (% style="color:red" %)**EU868 **(%%)**:** LoRaWAN EU868 band
1143 * (% style="color:red" %)**KR920 **(%%)**:** LoRaWAN KR920 band
1144 * (% style="color:red" %)**US915 **(%%)**:** LoRaWAN US915 band
1145 * (% style="color:red" %)**IN865 **(%%)**:**  LoRaWAN IN865 band
1146 * (% style="color:red" %)**CN470 **(%%)**:** LoRaWAN CN470 band
1147
1148 == 8.2  Probe Model ==
1149
1150 Detail See [[Probe Option>>path:#Probe_Option]] Section
1151
1152 * A01A-15
1153 * A02-15
1154 * A13-15
1155 * A16-15
1156
1157 = 9. ​ Packing Info =
1158
1159
1160 **Package Includes**:
1161
1162 * LDDS04 LoRaWAN 4-Channels Distance Sensor x 1
1163
1164 **Dimension and weight**:
1165
1166 * Device Size: cm
1167 * Device Weight: g
1168 * Package Size / pcs : cm
1169 * Weight / pcs : g
1170
1171 = 10.  ​Support =
1172
1173 * 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.
1174 * 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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