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Last modified by Mengting Qiu on 2025/06/04 18:42
From version 82.3
edited by Xiaoling
on 2022/06/20 11:17
Change comment: There is no comment for this version
To version 77.87
edited by Xiaoling
on 2022/06/10 09:27
Change comment: There is no comment for this version

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... ... @@ -19,8 +19,6 @@
19 19  == 1.1 What is LT Series I/O Controller ==
20 20  
21 21  (((
22 -
23 -
24 24  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.
25 25  )))
26 26  
... ... @@ -50,7 +50,6 @@
50 50  
51 51  )))
52 52  
53 -
54 54  == 1.2  Specifications ==
55 55  
56 56  (((
... ... @@ -79,8 +79,6 @@
79 79  )))
80 80  
81 81  (((
82 -
83 -
84 84  **Interface for Model: LT22222-L:**
85 85  )))
86 86  
... ... @@ -104,8 +104,6 @@
104 104  )))
105 105  
106 106  (((
107 -
108 -
109 109  **LoRa Spec:**
110 110  )))
111 111  
... ... @@ -166,8 +166,6 @@
166 166  * (((
167 167  Packet engine up to 256 bytes with CRC.
168 168  
169 -
170 -
171 171  
172 172  )))
173 173  
... ... @@ -225,9 +225,12 @@
225 225  
226 226  (((
227 227  In case user can’t set the OTAA keys in the network server and has to use the existing keys from server. User can [[use AT Command>>||anchor="H4.UseATCommand"]] to set the keys in the devices.
219 +
220 +
228 228  )))
229 229  
230 230  
224 +
231 231  == 3.2 Example to join LoRaWAN network ==
232 232  
233 233  (((
... ... @@ -236,13 +236,12 @@
236 236  
237 237  [[image:image-20220523172350-1.png||height="266" width="864"]]
238 238  
239 -
240 240  (((
241 241  The LG308 is already set to connect to [[TTN network >>url:https://www.thethingsnetwork.org/]]. So what we need to do now is only configure register this device to TTN:
242 242  )))
243 243  
244 244  (((
245 -(% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LT IO controller.
238 +**Step 1**: Create a device in TTN with the OTAA keys from LT IO controller.
246 246  )))
247 247  
248 248  (((
... ... @@ -251,7 +251,6 @@
251 251  
252 252  [[image:1653297924498-393.png]]
253 253  
254 -
255 255  Input these keys in the LoRaWAN Server portal. Below is TTN screen shot:
256 256  
257 257  Add APP EUI in the application.
... ... @@ -265,7 +265,7 @@
265 265  
266 266  
267 267  (((
268 -(% style="color:blue" %)**Step 2**(%%): Power on LT and it will auto join to the TTN network. After join success, it will start to upload message to TTN and user can see in the panel.
260 +**Step 2**: Power on LT and it will auto join to the TTN network. After join success, it will start to upload message to TTN and user can see in the panel.
269 269  )))
270 270  
271 271  [[image:1653298044601-602.png||height="405" width="709"]]
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290 290  [[image:image-20220523174024-3.png]]
291 291  
292 292  (((
293 -
294 -
295 295  (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
296 296  )))
297 297  
... ... @@ -305,7 +305,6 @@
305 305  
306 306  For example if payload is: [[image:image-20220523175847-2.png]]
307 307  
308 -
309 309  **The value for the interface is:  **
310 310  
311 311  AVI1 channel voltage is 0x04AB/1000=1195（DEC）/1000=1.195V
... ... @@ -321,6 +321,7 @@
321 321  * [1] RO1 relay channel is close and the RO1 LED is ON.
322 322  * [0] RO2 relay channel is open and RO2 LED is OFF;
323 323  
313 +
324 324  **LT22222-L:**
325 325  
326 326  * [1] DI2 channel is high input and DI2 LED is ON;
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336 336  ** DO1 is high in case there is load between DO1 and V+.
337 337  ** DO1 LED is off in both case
338 338  
329 +
339 339  === 3.3.2 AT+MOD~=2, (Double DI Counting) ===
340 340  
341 341  
... ... @@ -476,10 +476,11 @@
476 476  
477 477  (((
478 478  Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
470 +
471 +
479 479  )))
480 480  
481 481  
482 -
483 483  === 3.3.4 AT+MOD~=4, Single DI Counting + 1 x Voltage Counting ===
484 484  
485 485  
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645 645  AT+AVLIM=5000,0,0,0   (If AVI1 voltage lower than 5V , trigger uplink, 0 means ignore)
646 646  
647 647  
648 -
649 649  (% style="color:#4f81bd" %)**Trigger base on current**:
650 650  
651 651  Format: AT+ACLIM=<AC1_LIMIT_LOW>,< AC1_LIMIT_HIGH>,<AC2_LIMIT_LOW>,< AC2_LIMIT_HIGH>
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655 655  AT+ACLIM=10000,15000,0,0   (If ACI1 voltage lower than 10mA or higher than 15mA, trigger an uplink)
656 656  
657 657  
658 -
659 659  (% style="color:#4f81bd" %)**Trigger base on DI status**:
660 660  
661 661  DI status trigger Flag.
... ... @@ -662,13 +662,12 @@
662 662  
663 663  Format: AT+DTRI=<DI1_TIRGGER_FlAG>,< DI2_TIRGGER_FlAG >
664 664  
665 -
666 666  **Example:**
667 667  
668 668  AT+ DTRI =1,0   (Enable DI1 trigger / disable DI2 trigger)
669 669  
670 670  
671 -**Downlink Command to set Trigger Condition:**
660 +**Downlink Command to set Trigger Condition**
672 672  
673 673  Type Code: 0xAA. Downlink command same as AT Command **AT+AVLIM, AT+ACLIM**
674 674  
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697 697  Same as AT+ DTRI =1,0  (Enable DI1 trigger / disable DI2 trigger)
698 698  
699 699  
700 -
701 701  (% style="color:#4f81bd" %)**Trigger Settings Payload Explanation:**
702 702  
703 703  MOD6 Payload : total 11 bytes payload
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761 761  )))
762 762  
763 763  
752 +
764 764  == 3.4 ​Configure LT via AT or Downlink ==
765 765  
766 766  User can configure LT I/O Controller via AT Commands or LoRaWAN Downlink Commands
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773 773  
774 774  * (% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for LT-22222-L.  User can see these commands below:
775 775  
765 +
776 776  === 3.4.1 Common Commands ===
777 777  
778 778  They should be available for each of Dragino Sensors, such as: change uplink interval, reset device. For firmware v1.5.4, user can find what common commands it supports: [[End Device AT Commands and Downlink Command>>doc:Main.End Device AT Commands and Downlink Command.WebHome]]
... ... @@ -2004,16 +2004,8 @@
2004 2004  )))
2005 2005  
2006 2006  (((
2007 -== 5.6 Why does the relay output become the default and open relay after the lt22222 is powered off? ==
1997 +
2008 2008  
2009 -If the device is not shut down, but directly powered off.
2010 -
2011 -It will default that this is a power-off state.
2012 -
2013 -In modes 2 to 5, DO RO status and pulse count are saved in flash.
2014 -
2015 -After restart, the status before power failure will be read from flash.
2016 -
2017 2017  = 6. Trouble Shooting =
2018 2018  )))
2019 2019