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Last modified by Mengting Qiu on 2025/06/04 18:42
From version 75.8
edited by Xiaoling
on 2022/06/01 17:28
Change comment: There is no comment for this version
To version 77.31
edited by Xiaoling
on 2022/06/10 08:43
Change comment: There is no comment for this version

Summary

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Content
... ... @@ -11,6 +11,9 @@
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  
... ... @@ -70,6 +70,7 @@
70 70  )))
71 71  )))
72 72  
78 +
73 73  (((
74 74  **Interface for Model: LT22222-L:**
75 75  )))
... ... @@ -93,6 +93,7 @@
93 93  Power Input 7~~ 24V DC. 
94 94  )))
95 95  
102 +
96 96  (((
97 97  **LoRa Spec:**
98 98  )))
... ... @@ -157,6 +157,8 @@
157 157  
158 158  )))
159 159  
167 +
168 +
160 160  == 1.3 Features ==
161 161  
162 162  * LoRaWAN Class A & Class C protocol
... ... @@ -193,6 +193,8 @@
193 193  * 1 x Counting Port
194 194  )))
195 195  
205 +
206 +
196 196  = 2. Power ON Device =
197 197  
198 198  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.
... ... @@ -204,6 +204,7 @@
204 204  [[image:1653297104069-180.png]]
205 205  
206 206  
218 +
207 207  = 3. Operation Mode =
208 208  
209 209  == 3.1 How it works? ==
... ... @@ -218,6 +218,8 @@
218 218  
219 219  )))
220 220  
233 +
234 +
221 221  == 3.2 Example to join LoRaWAN network ==
222 222  
223 223  (((
... ... @@ -259,6 +259,7 @@
259 259  [[image:1653298044601-602.png||height="405" width="709"]]
260 260  
261 261  
276 +
262 262  == 3.3 Uplink Payload ==
263 263  
264 264  There are five working modes + one interrupt mode on LT for different type application:
... ... @@ -270,6 +270,8 @@
270 270  * **MOD5**: Single DI Counting + 2 x AVI + 1 x ACI + DO + RO
271 271  * **ADDMOD6**: Trigger Mode, Optional, used together with MOD1 ~~ MOD5
272 272  
288 +
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.
... ... @@ -305,6 +305,7 @@
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;
... ... @@ -320,6 +320,8 @@
320 320  ** DO1 is high in case there is load between DO1 and V+.
321 321  ** DO1 LED is off in both case
322 322  
341 +
342 +
323 323  === 3.3.2 AT+MOD~=2, (Double DI Counting) ===
324 324  
325 325  **For LT-22222-L**: this mode the **DI1 and DI2** are used as counting pins.
... ... @@ -413,6 +413,7 @@
413 413  )))
414 414  
415 415  
436 +
416 416  === 3.3.3 AT+MOD~=3, Single DI Counting + 2 x ACI ===
417 417  
418 418  **LT22222-L**: This mode the DI1 is used as a counting pin.
... ... @@ -457,6 +457,8 @@
457 457  
458 458  )))
459 459  
481 +
482 +
460 460  === 3.3.4 AT+MOD~=4, Single DI Counting + 1 x Voltage Counting ===
461 461  
462 462  **LT22222-L**: This mode the DI1 is used as a counting pin.
... ... @@ -538,6 +538,7 @@
538 538  )))
539 539  
540 540  
564 +
541 541  === 3.3.5 AT+MOD~=5, Single DI Counting + 2 x AVI + 1 x ACI ===
542 542  
543 543  **LT22222-L**: This mode the DI1 is used as a counting pin.
... ... @@ -582,6 +582,8 @@
582 582  
583 583  )))
584 584  
609 +
610 +
585 585  === 3.3.6 AT+ADDMOD~=6. (Trigger Mode, Optional) ===
586 586  
587 587  (% style="color:#4f81bd" %)**This mode is an optional mode for trigger purpose. It can run together with other mode.**
... ... @@ -608,6 +608,7 @@
608 608  
609 609  AT+AVLIM=5000,0,0,0   (If AVI1 voltage lower than 5V , trigger uplink, 0 means ignore)
610 610  
637 +
611 611  (% style="color:#4f81bd" %)**Trigger base on current**:
612 612  
613 613  Format: AT+ACLIM=<AC1_LIMIT_LOW>,< AC1_LIMIT_HIGH>,<AC2_LIMIT_LOW>,< AC2_LIMIT_HIGH>
... ... @@ -616,6 +616,7 @@
616 616  
617 617  AT+ACLIM=10000,15000,0,0   (If ACI1 voltage lower than 10mA or higher than 15mA, trigger an uplink)
618 618  
646 +
619 619  (% style="color:#4f81bd" %)**Trigger base on DI status**:
620 620  
621 621  DI status trigger Flag.
... ... @@ -703,6 +703,7 @@
703 703  When device got this command, it will send the MOD6 payload.
704 704  
705 705  
734 +
706 706  === 3.3.7 Payload Decoder ===
707 707  
708 708  (((
... ... @@ -711,6 +711,8 @@
711 711  
712 712  )))
713 713  
743 +
744 +
714 714  == 3.4 ​Configure LT via AT or Downlink ==
715 715  
716 716  User can configure LT I/O Controller via AT Commands or LoRaWAN Downlink Commands
... ... @@ -719,15 +719,18 @@
719 719  There are two kinds of Commands:
720 720  )))
721 721  
722 -* (% style="color:#4f81bd" %)**Common Commands**(%%): They should be available for each sensor, such as: change uplink interval, reset device. For firmware v1.5.4, user can find what common commands it supports: http:~/~/wiki.dragino.com/index.php?title=End_Device_AT_Commands_and_Downlink_Commands
753 +* (% style="color:#4f81bd" %)**Common Commands**(%%): They should be available for each sensor, 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]]
723 723  
724 724  * (% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for LT-22222-L.  User can see these commands below:
725 725  
757 +
758 +
726 726  === 3.4.1 Common Commands ===
727 727  
728 728  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]]
729 729  
730 730  
764 +
731 731  === 3.4.2 Sensor related commands ===
732 732  
733 733  ==== 3.4.2.1 Set Transmit Interval ====
... ... @@ -751,6 +751,7 @@
751 751  )))
752 752  
753 753  
788 +
754 754  ==== 3.4.2.2 Set Work Mode (AT+MOD) ====
755 755  
756 756  Set work mode.
... ... @@ -772,6 +772,7 @@
772 772  )))
773 773  
774 774  
810 +
775 775  ==== 3.4.2.3 Poll an uplink ====
776 776  
777 777  * AT Command:
... ... @@ -788,9 +788,10 @@
788 788  **Example**: 0x08FF, ask device to send an Uplink
789 789  
790 790  
827 +
791 791  ==== 3.4.2.4 Enable Trigger Mode ====
792 792  
793 -Use of trigger mode, please check [[ADDMOD6>>path:http://8.211.40.43:8080/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/#H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29]]
830 +Use of trigger mode, please check [[ADDMOD6>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
794 794  
795 795  * AT Command:
796 796  
... ... @@ -811,6 +811,7 @@
811 811  )))
812 812  
813 813  
851 +
814 814  ==== 3.4.2.5 Poll trigger settings ====
815 815  
816 816  Poll trigger settings,
... ... @@ -827,6 +827,7 @@
827 827  )))
828 828  
829 829  
868 +
830 830  ==== 3.4.2.6 Enable / Disable DI1/DI2/DI3 as trigger ====
831 831  
832 832  Enable Disable DI1/DI2/DI2 as trigger,
... ... @@ -850,6 +850,7 @@
850 850  )))
851 851  
852 852  
892 +
853 853  ==== 3.4.2.7 Trigger1 – Set DI1 or DI3 as trigger ====
854 854  
855 855  Set DI1 or DI3(for LT-33222-L) trigger.
... ... @@ -877,6 +877,7 @@
877 877  )))
878 878  
879 879  
920 +
880 880  ==== 3.4.2.8 Trigger2 – Set DI2 as trigger ====
881 881  
882 882  Set DI2 trigger.
... ... @@ -904,9 +904,10 @@
904 904  )))
905 905  
906 906  
948 +
907 907  ==== 3.4.2.9 Trigger – Set AC (current) as trigger ====
908 908  
909 -Set current trigger , base on AC port. See [[trigger mode>>path:http://8.211.40.43:8080/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/#H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29]]
951 +Set current trigger , base on AC port. See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
910 910  
911 911  * AT Command:
912 912  
... ... @@ -919,19 +919,20 @@
919 919  
920 920  (% class="box infomessage" %)
921 921  (((
922 -**0x AA 01 aa bb cc dd ee ff gg hh ~/~/ same as AT+ACLIM See [[trigger mode>>url:http://8.211.40.43:8080/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/#H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29]]**
964 +**0x AA 01 aa bb cc dd ee ff gg hh ~/~/ same as AT+ACLIM See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]**
923 923  )))
924 924  
925 925  
968 +
926 926  ==== 3.4.2.10 Trigger – Set AV (voltage) as trigger ====
927 927  
928 -Set current trigger , base on AV port. See [[trigger mode>>url:http://8.211.40.43:8080/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/#H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29]]
971 +Set current trigger , base on AV port. See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
929 929  
930 930  * AT Command:
931 931  
932 932  (% class="box infomessage" %)
933 933  (((
934 -**AT+AVLIM. See [[trigger mode>>url:http://8.211.40.43:8080/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/#H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29]]**
977 +**AT+AVLIM. See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]**
935 935  )))
936 936  
937 937  * Downlink Payload (prefix 0xAA 00 ):
... ... @@ -938,10 +938,11 @@
938 938  
939 939  (% class="box infomessage" %)
940 940  (((
941 -**0x AA 00 aa bb cc dd ee ff gg hh ~/~/ same as AT+AVLIM See [[trigger mode>>url:http://8.211.40.43:8080/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/#H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29]] **
984 +**0x AA 00 aa bb cc dd ee ff gg hh ~/~/ same as AT+AVLIM See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]] **
942 942  )))
943 943  
944 944  
988 +
945 945  ==== 3.4.2.11 Trigger – Set minimum interval ====
946 946  
947 947  Set AV and AC trigger minimum interval, system won’t response to the second trigger within this set time after the first trigger.
... ... @@ -961,6 +961,7 @@
961 961  )))
962 962  
963 963  
1008 +
964 964  ==== 3.4.2.12 DO ~-~- Control Digital Output DO1/DO2/DO3 ====
965 965  
966 966  * AT Command:
... ... @@ -993,6 +993,7 @@
993 993  )))
994 994  
995 995  
1041 +
996 996  ==== 3.4.2.13 DO ~-~- Control Digital Output DO1/DO2/DO3 with time control ====
997 997  
998 998  * AT Command:
... ... @@ -1055,6 +1055,7 @@
1055 1055  DO1 pin no action, DO2 pin set low, DO3 pin set high, last 2 seconds, then DO1 pin no action, DO2 pin set high, DO3 pin set low
1056 1056  
1057 1057  
1104 +
1058 1058  === 3.4.2.14 Relay ~-~- Control Relay Output RO1/RO2 ===
1059 1059  
1060 1060  * AT Command:
... ... @@ -1083,6 +1083,7 @@
1083 1083  Device will upload a packet if downlink code executes successfully.
1084 1084  
1085 1085  
1133 +
1086 1086  ==== 3.4.2.15 Relay ~-~- Control Relay Output RO1/RO2 with time control ====
1087 1087  
1088 1088  * AT Command:
... ... @@ -1133,15 +1133,16 @@
1133 1133  Relay 1 & relay2 will change to NC, last 2 seconds, then both change to NO.
1134 1134  
1135 1135  
1184 +
1136 1136  ==== 3.4.2.16 Counting ~-~- Voltage threshold counting ====
1137 1137  
1138 -When voltage exceed the threshold, count. Feature see [[MOD4>>path:http://8.211.40.43:8080/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/#H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting]]
1187 +When voltage exceed the threshold, count. Feature see [[MOD4>>||anchor="H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting"]]
1139 1139  
1140 1140  * AT Command:
1141 1141  
1142 1142  (% class="box infomessage" %)
1143 1143  (((
1144 -**AT+VOLMAX    ~/~/ See [[MOD4>>path:http://8.211.40.43:8080/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/#H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting]]**
1193 +**AT+VOLMAX    ~/~/ See [[MOD4>>||anchor="H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting"]]**
1145 1145  )))
1146 1146  
1147 1147  * Downlink Payload (prefix 0xA5):
... ... @@ -1152,6 +1152,7 @@
1152 1152  )))
1153 1153  
1154 1154  
1204 +
1155 1155  ==== 3.4.2.17 Counting ~-~- Pre-configure the Count Number ====
1156 1156  
1157 1157  * AT Command:
... ... @@ -1177,6 +1177,7 @@
1177 1177  )))
1178 1178  
1179 1179  
1230 +
1180 1180  ==== 3.4.2.18 Counting ~-~- Clear Counting ====
1181 1181  
1182 1182  Clear counting for counting mode
... ... @@ -1196,6 +1196,7 @@
1196 1196  )))
1197 1197  
1198 1198  
1250 +
1199 1199  ==== 3.4.2.19 Counting ~-~- Change counting mode save time ====
1200 1200  
1201 1201  * AT Command:
... ... @@ -1218,6 +1218,8 @@
1218 1218  
1219 1219  )))
1220 1220  
1273 +
1274 +
1221 1221  == 3.5 Integrate with Mydevice ==
1222 1222  
1223 1223  Mydevices provides a human friendly interface to show the sensor data, once we have data in TTN, we can use Mydevices to connect to TTN and see the data in Mydevices. Below are the steps:
... ... @@ -1236,6 +1236,7 @@
1236 1236  
1237 1237  [[image:image-20220524094641-12.png||height="402" width="718"]]
1238 1238  
1293 +
1239 1239  **Step 3**: Create an account or log in Mydevices.
1240 1240  
1241 1241  **Step 4**: Search LT-22222-L(for both LT-22222-L / LT-33222-L) and add DevEUI.(% style="display:none" %)
... ... @@ -1258,6 +1258,7 @@
1258 1258  [[image:image-20220524094909-5.png||height="341" width="734"]]
1259 1259  
1260 1260  
1316 +
1261 1261  == 3.6 Interface Detail ==
1262 1262  
1263 1263  === 3.6.1 Digital Input Port: DI1/DI2 /DI3 ( For LT-33222-L, low active ) ===
... ... @@ -1267,6 +1267,7 @@
1267 1267  [[image:1653356991268-289.png]]
1268 1268  
1269 1269  
1326 +
1270 1270  === 3.6.2 Digital Input Port: DI1/DI2 ( For LT-22222-L) ===
1271 1271  
1272 1272  (((
... ... @@ -1381,6 +1381,7 @@
1381 1381  )))
1382 1382  
1383 1383  
1441 +
1384 1384  === 3.6.3 Digital Output Port: DO1/DO2 /DO3 ===
1385 1385  
1386 1386  NPN output: GND or Float. Max voltage can apply to output pin is 36v.
... ... @@ -1388,6 +1388,7 @@
1388 1388  [[image:1653357531600-905.png]]
1389 1389  
1390 1390  
1449 +
1391 1391  === 3.6.4 Analog Input Interface ===
1392 1392  
1393 1393  The analog input interface is as below. The LT will measure the IN2 voltage so to calculate the current pass the Load. The formula is:
... ... @@ -1416,6 +1416,7 @@
1416 1416  [[image:1653357648330-671.png||height="155" width="733"]]
1417 1417  
1418 1418  
1478 +
1419 1419  === 3.6.5 Relay Output ===
1420 1420  
1421 1421  (((
... ... @@ -1859,6 +1859,11 @@
1859 1859  (((
1860 1860  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.
1861 1861  
1922 +
1923 +== 5.5 Can i use point to point communication for LT-22222-L? ==
1924 +
1925 +Yes, please refer [[Point to Point Communication>>doc:Main. Point to Point Communication of LT-22222-L.WebHome]]
1926 +
1862 1862  
1863 1863  )))
1864 1864