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Last modified by Mengting Qiu on 2025/06/04 18:42
From version 82.2
edited by Xiaoling
on 2022/06/20 11:16
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  
... ... @@ -165,6 +165,8 @@
165 165  )))
166 166  * (((
167 167  Packet engine up to 256 bytes with CRC.
161 +
162 +
168 168  )))
169 169  
170 170  == 1.3 Features ==
... ... @@ -221,9 +221,12 @@
221 221  
222 222  (((
223 223  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 +
224 224  )))
225 225  
226 226  
224 +
227 227  == 3.2 Example to join LoRaWAN network ==
228 228  
229 229  (((
... ... @@ -232,13 +232,12 @@
232 232  
233 233  [[image:image-20220523172350-1.png||height="266" width="864"]]
234 234  
235 -
236 236  (((
237 237  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:
238 238  )))
239 239  
240 240  (((
241 -(% 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.
242 242  )))
243 243  
244 244  (((
... ... @@ -247,7 +247,6 @@
247 247  
248 248  [[image:1653297924498-393.png]]
249 249  
250 -
251 251  Input these keys in the LoRaWAN Server portal. Below is TTN screen shot:
252 252  
253 253  Add APP EUI in the application.
... ... @@ -261,7 +261,7 @@
261 261  
262 262  
263 263  (((
264 -(% 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.
265 265  )))
266 266  
267 267  [[image:1653298044601-602.png||height="405" width="709"]]
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286 286  [[image:image-20220523174024-3.png]]
287 287  
288 288  (((
289 -
290 -
291 291  (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
292 292  )))
293 293  
... ... @@ -301,7 +301,6 @@
301 301  
302 302  For example if payload is: [[image:image-20220523175847-2.png]]
303 303  
304 -
305 305  **The value for the interface is:  **
306 306  
307 307  AVI1 channel voltage is 0x04AB/1000=1195（DEC）/1000=1.195V
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317 317  * [1] RO1 relay channel is close and the RO1 LED is ON.
318 318  * [0] RO2 relay channel is open and RO2 LED is OFF;
319 319  
313 +
320 320  **LT22222-L:**
321 321  
322 322  * [1] DI2 channel is high input and DI2 LED is ON;
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332 332  ** DO1 is high in case there is load between DO1 and V+.
333 333  ** DO1 LED is off in both case
334 334  
329 +
335 335  === 3.3.2 AT+MOD~=2, (Double DI Counting) ===
336 336  
337 337  
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472 472  
473 473  (((
474 474  Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
470 +
471 +
475 475  )))
476 476  
477 477  
478 -
479 479  === 3.3.4 AT+MOD~=4, Single DI Counting + 1 x Voltage Counting ===
480 480  
481 481  
... ... @@ -641,7 +641,6 @@
641 641  AT+AVLIM=5000,0,0,0   (If AVI1 voltage lower than 5V , trigger uplink, 0 means ignore)
642 642  
643 643  
644 -
645 645  (% style="color:#4f81bd" %)**Trigger base on current**:
646 646  
647 647  Format: AT+ACLIM=<AC1_LIMIT_LOW>,< AC1_LIMIT_HIGH>,<AC2_LIMIT_LOW>,< AC2_LIMIT_HIGH>
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651 651  AT+ACLIM=10000,15000,0,0   (If ACI1 voltage lower than 10mA or higher than 15mA, trigger an uplink)
652 652  
653 653  
654 -
655 655  (% style="color:#4f81bd" %)**Trigger base on DI status**:
656 656  
657 657  DI status trigger Flag.
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658 658  
659 659  Format: AT+DTRI=<DI1_TIRGGER_FlAG>,< DI2_TIRGGER_FlAG >
660 660  
661 -
662 662  **Example:**
663 663  
664 664  AT+ DTRI =1,0   (Enable DI1 trigger / disable DI2 trigger)
665 665  
666 666  
667 -**Downlink Command to set Trigger Condition:**
660 +**Downlink Command to set Trigger Condition**
668 668  
669 669  Type Code: 0xAA. Downlink command same as AT Command **AT+AVLIM, AT+ACLIM**
670 670  
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693 693  Same as AT+ DTRI =1,0  (Enable DI1 trigger / disable DI2 trigger)
694 694  
695 695  
696 -
697 697  (% style="color:#4f81bd" %)**Trigger Settings Payload Explanation:**
698 698  
699 699  MOD6 Payload : total 11 bytes payload
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757 757  )))
758 758  
759 759  
752 +
760 760  == 3.4 ​Configure LT via AT or Downlink ==
761 761  
762 762  User can configure LT I/O Controller via AT Commands or LoRaWAN Downlink Commands
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769 769  
770 770  * (% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for LT-22222-L.  User can see these commands below:
771 771  
765 +
772 772  === 3.4.1 Common Commands ===
773 773  
774 774  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]]
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2000 2000  )))
2001 2001  
2002 2002  (((
2003 -== 5.6 Why does the relay output become the default and open relay after the lt22222 is powered off? ==
1997 +
2004 2004  
2005 -If the device is not shut down, but directly powered off.
2006 -
2007 -It will default that this is a power-off state.
2008 -
2009 -In modes 2 to 5, DO RO status and pulse count are saved in flash.
2010 -
2011 -After restart, the status before power failure will be read from flash.
2012 -
2013 2013  = 6. Trouble Shooting =
2014 2014  )))
2015 2015