Last modified by Saxer Lin on 2025/04/15 17:24
<
From version < 75.17 >
edited by Xiaoling
on 2022/06/01 17:46
To version < 77.24 >
edited by Xiaoling
on 2022/06/10 08:41
>
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Content
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11 11  
12 12  
13 13  
14 +
15 +
16 +
14 14  = 1.Introduction =
15 15  
16 16  == 1.1 What is LT Series I/O Controller ==
... ... @@ -48,6 +48,8 @@
48 48  == 1.2  Specifications ==
49 49  
50 50  (((
54 +
55 +
51 51  **Hardware System:**
52 52  )))
53 53  
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70 70  )))
71 71  )))
72 72  
78 +
73 73  (((
74 74  **Interface for Model: LT22222-L:**
75 75  )))
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93 93  Power Input 7~~ 24V DC. 
94 94  )))
95 95  
102 +
96 96  (((
97 97  **LoRa Spec:**
98 98  )))
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157 157  
158 158  )))
159 159  
167 +
168 +
160 160  == 1.3 Features ==
161 161  
162 162  * LoRaWAN Class A & Class C protocol
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168 168  * Counting
169 169  
170 170  
180 +
171 171  == 1.4  Applications ==
172 172  
173 173  * Smart Buildings & Home Automation
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178 178  * Smart Factory
179 179  
180 180  
191 +
181 181  == 1.5 Hardware Variants ==
182 182  
183 183  (% border="1" style="background-color:#f7faff; width:500px" %)
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192 192  )))
193 193  
194 194  
206 +
195 195  = 2. Power ON Device =
196 196  
197 197  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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203 203  [[image:1653297104069-180.png]]
204 204  
205 205  
218 +
206 206  = 3. Operation Mode =
207 207  
208 208  == 3.1 How it works? ==
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217 217  
218 218  )))
219 219  
233 +
234 +
220 220  == 3.2 Example to join LoRaWAN network ==
221 221  
222 222  (((
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258 258  [[image:1653298044601-602.png||height="405" width="709"]]
259 259  
260 260  
276 +
261 261  == 3.3 Uplink Payload ==
262 262  
263 263  There are five working modes + one interrupt mode on LT for different type application:
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270 270  * **ADDMOD6**: Trigger Mode, Optional, used together with MOD1 ~~ MOD5
271 271  
272 272  
289 +
273 273  === 3.3.1 AT+MOD~=1, 2ACI+2AVI ===
274 274  
275 275  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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305 305  * [1] RO1 relay channel is close and the RO1 LED is ON.
306 306  * [0] RO2 relay channel is open and RO2 LED is OFF;
307 307  
325 +
308 308  **LT22222-L:**
309 309  
310 310  * [1] DI2 channel is high input and DI2 LED is ON;
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321 321  ** DO1 LED is off in both case
322 322  
323 323  
342 +
324 324  === 3.3.2 AT+MOD~=2, (Double DI Counting) ===
325 325  
326 326  **For LT-22222-L**: this mode the **DI1 and DI2** are used as counting pins.
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414 414  )))
415 415  
416 416  
436 +
417 417  === 3.3.3 AT+MOD~=3, Single DI Counting + 2 x ACI ===
418 418  
419 419  **LT22222-L**: This mode the DI1 is used as a counting pin.
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458 458  
459 459  )))
460 460  
481 +
482 +
461 461  === 3.3.4 AT+MOD~=4, Single DI Counting + 1 x Voltage Counting ===
462 462  
463 463  **LT22222-L**: This mode the DI1 is used as a counting pin.
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539 539  )))
540 540  
541 541  
564 +
542 542  === 3.3.5 AT+MOD~=5, Single DI Counting + 2 x AVI + 1 x ACI ===
543 543  
544 544  **LT22222-L**: This mode the DI1 is used as a counting pin.
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583 583  
584 584  )))
585 585  
609 +
610 +
586 586  === 3.3.6 AT+ADDMOD~=6. (Trigger Mode, Optional) ===
587 587  
588 588  (% style="color:#4f81bd" %)**This mode is an optional mode for trigger purpose. It can run together with other mode.**
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706 706  When device got this command, it will send the MOD6 payload.
707 707  
708 708  
734 +
709 709  === 3.3.7 Payload Decoder ===
710 710  
711 711  (((
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714 714  
715 715  )))
716 716  
743 +
744 +
717 717  == 3.4 ​Configure LT via AT or Downlink ==
718 718  
719 719  User can configure LT I/O Controller via AT Commands or LoRaWAN Downlink Commands
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726 726  
727 727  * (% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for LT-22222-L.  User can see these commands below:
728 728  
757 +
758 +
729 729  === 3.4.1 Common Commands ===
730 730  
731 731  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]]
732 732  
733 733  
764 +
734 734  === 3.4.2 Sensor related commands ===
735 735  
736 736  ==== 3.4.2.1 Set Transmit Interval ====
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754 754  )))
755 755  
756 756  
788 +
757 757  ==== 3.4.2.2 Set Work Mode (AT+MOD) ====
758 758  
759 759  Set work mode.
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775 775  )))
776 776  
777 777  
810 +
778 778  ==== 3.4.2.3 Poll an uplink ====
779 779  
780 780  * AT Command:
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791 791  **Example**: 0x08FF, ask device to send an Uplink
792 792  
793 793  
827 +
794 794  ==== 3.4.2.4 Enable Trigger Mode ====
795 795  
796 796  Use of trigger mode, please check [[ADDMOD6>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
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814 814  )))
815 815  
816 816  
851 +
817 817  ==== 3.4.2.5 Poll trigger settings ====
818 818  
819 819  Poll trigger settings,
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830 830  )))
831 831  
832 832  
868 +
833 833  ==== 3.4.2.6 Enable / Disable DI1/DI2/DI3 as trigger ====
834 834  
835 835  Enable Disable DI1/DI2/DI2 as trigger,
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853 853  )))
854 854  
855 855  
892 +
856 856  ==== 3.4.2.7 Trigger1 – Set DI1 or DI3 as trigger ====
857 857  
858 858  Set DI1 or DI3(for LT-33222-L) trigger.
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1863 1863  (((
1864 1864  User can run AT+DEBUG command to see the counting event in serial. If firmware too old and doesn’t support AT+DEBUG. User can update to latest firmware first.
1865 1865  
1903 +
1904 +== 5.5 Can i use point to point communication for LT-22222-L? ==
1905 +
1906 +Yes, please refer [[Point to Point Communication>>doc:Main. Point to Point Communication of LT-22222-L.WebHome]]
1907 +
1866 1866  
1867 1867  )))
1868 1868  

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