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Last modified by Mengting Qiu on 2025/06/04 18:42
From version 77.112
edited by Xiaoling
on 2022/06/10 09:37
Change comment: There is no comment for this version
To version 82.9
edited by Xiaoling
on 2022/06/20 11:19
Change comment: There is no comment for this version

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19 19  == 1.1 What is LT Series I/O Controller ==
20 20  
21 21  (((
22 +
23 +
22 22  The Dragino (% style="color:blue" %)**LT series I/O Modules**(%%) are Long Range LoRaWAN I/O Controller. It contains different I/O Interfaces such as:** (% style="color:blue" %)analog current Input, analog voltage input(%%)**(% style="color:blue" %), **relay output**, **digital input**(%%) and (% style="color:blue" %)**digital output**(%%) etc. The LT I/O Modules are designed to simplify the installation of I/O monitoring.
23 23  )))
24 24  
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48 48  
49 49  )))
50 50  
53 +
51 51  == 1.2  Specifications ==
52 52  
53 53  (((
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163 163  * (((
164 164  Packet engine up to 256 bytes with CRC.
165 165  
169 +
170 +
166 166  
167 167  )))
168 168  
169 -
170 -
171 171  == 1.3 Features ==
172 172  
173 173  * LoRaWAN Class A & Class C protocol
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180 180  
181 181  
182 182  
186 +
183 183  == 1.4  Applications ==
184 184  
185 185  * Smart Buildings & Home Automation
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191 191  
192 192  
193 193  
198 +
194 194  == 1.5 Hardware Variants ==
195 195  
196 196  (% border="1" style="background-color:#f7faff; width:500px" %)
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205 205  )))
206 206  
207 207  
213 +
208 208  = 2. Power ON Device =
209 209  
210 210  The LT controller can be powered by 7 ~~ 24V DC power source. Connect VIN to Power Input V+ and GND to power input V- to power the LT controller.
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286 286  * **ADDMOD6**: Trigger Mode, Optional, used together with MOD1 ~~ MOD5
287 287  
288 288  
295 +
296 +
289 289  === 3.3.1 AT+MOD~=1, 2ACI+2AVI ===
290 290  
291 291  The uplink payload includes totally 9 bytes. Uplink packets use FPORT=2 and every 10 minutes send one uplink by default.
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324 324  * [1] RO1 relay channel is close and the RO1 LED is ON.
325 325  * [0] RO2 relay channel is open and RO2 LED is OFF;
326 326  
335 +
327 327  **LT22222-L:**
328 328  
329 329  * [1] DI2 channel is high input and DI2 LED is ON;
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340 340  ** DO1 LED is off in both case
341 341  
342 342  
352 +
353 +
343 343  === 3.3.2 AT+MOD~=2, (Double DI Counting) ===
344 344  
345 345  
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480 480  
481 481  (((
482 482  Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
483 -
484 -
485 485  )))
486 486  
487 487  
497 +
488 488  === 3.3.4 AT+MOD~=4, Single DI Counting + 1 x Voltage Counting ===
489 489  
490 490  
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766 766  )))
767 767  
768 768  
769 -
770 770  == 3.4 ​Configure LT via AT or Downlink ==
771 771  
772 772  User can configure LT I/O Controller via AT Commands or LoRaWAN Downlink Commands
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2010 2010  )))
2011 2011  
2012 2012  (((
2013 -
2022 +== 5.6 Why does the relay output become the default and open relay after the lt22222 is powered off? ==
2014 2014  
2024 +If the device is not shut down, but directly powered off.
2025 +
2026 +It will default that this is a power-off state.
2027 +
2028 +In modes 2 to 5, DO RO status and pulse count are saved in flash.
2029 +
2030 +After restart, the status before power failure will be read from flash.
2031 +
2015 2015  = 6. Trouble Shooting =
2016 2016  )))
2017 2017