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Last modified by Mengting Qiu on 2025/06/04 18:42
From version 75.9
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
... ... @@ -206,6 +206,7 @@
206 206  [[image:1653297104069-180.png]]
207 207  
208 208  
218 +
209 209  = 3. Operation Mode =
210 210  
211 211  == 3.1 How it works? ==
... ... @@ -220,6 +220,8 @@
220 220  
221 221  )))
222 222  
233 +
234 +
223 223  == 3.2 Example to join LoRaWAN network ==
224 224  
225 225  (((
... ... @@ -261,6 +261,7 @@
261 261  [[image:1653298044601-602.png||height="405" width="709"]]
262 262  
263 263  
276 +
264 264  == 3.3 Uplink Payload ==
265 265  
266 266  There are five working modes + one interrupt mode on LT for different type application:
... ... @@ -272,6 +272,8 @@
272 272  * **MOD5**: Single DI Counting + 2 x AVI + 1 x ACI + DO + RO
273 273  * **ADDMOD6**: Trigger Mode, Optional, used together with MOD1 ~~ MOD5
274 274  
288 +
289 +
275 275  === 3.3.1 AT+MOD~=1, 2ACI+2AVI ===
276 276  
277 277  The uplink payload includes totally 9 bytes. Uplink packets use FPORT=2 and every 10 minutes send one uplink by default.
... ... @@ -307,6 +307,7 @@
307 307  * [1] RO1 relay channel is close and the RO1 LED is ON.
308 308  * [0] RO2 relay channel is open and RO2 LED is OFF;
309 309  
325 +
310 310  **LT22222-L:**
311 311  
312 312  * [1] DI2 channel is high input and DI2 LED is ON;
... ... @@ -322,6 +322,8 @@
322 322  ** DO1 is high in case there is load between DO1 and V+.
323 323  ** DO1 LED is off in both case
324 324  
341 +
342 +
325 325  === 3.3.2 AT+MOD~=2, (Double DI Counting) ===
326 326  
327 327  **For LT-22222-L**: this mode the **DI1 and DI2** are used as counting pins.
... ... @@ -415,6 +415,7 @@
415 415  )))
416 416  
417 417  
436 +
418 418  === 3.3.3 AT+MOD~=3, Single DI Counting + 2 x ACI ===
419 419  
420 420  **LT22222-L**: This mode the DI1 is used as a counting pin.
... ... @@ -459,6 +459,8 @@
459 459  
460 460  )))
461 461  
481 +
482 +
462 462  === 3.3.4 AT+MOD~=4, Single DI Counting + 1 x Voltage Counting ===
463 463  
464 464  **LT22222-L**: This mode the DI1 is used as a counting pin.
... ... @@ -540,6 +540,7 @@
540 540  )))
541 541  
542 542  
564 +
543 543  === 3.3.5 AT+MOD~=5, Single DI Counting + 2 x AVI + 1 x ACI ===
544 544  
545 545  **LT22222-L**: This mode the DI1 is used as a counting pin.
... ... @@ -584,6 +584,8 @@
584 584  
585 585  )))
586 586  
609 +
610 +
587 587  === 3.3.6 AT+ADDMOD~=6. (Trigger Mode, Optional) ===
588 588  
589 589  (% style="color:#4f81bd" %)**This mode is an optional mode for trigger purpose. It can run together with other mode.**
... ... @@ -610,6 +610,7 @@
610 610  
611 611  AT+AVLIM=5000,0,0,0   (If AVI1 voltage lower than 5V , trigger uplink, 0 means ignore)
612 612  
637 +
613 613  (% style="color:#4f81bd" %)**Trigger base on current**:
614 614  
615 615  Format: AT+ACLIM=<AC1_LIMIT_LOW>,< AC1_LIMIT_HIGH>,<AC2_LIMIT_LOW>,< AC2_LIMIT_HIGH>
... ... @@ -618,6 +618,7 @@
618 618  
619 619  AT+ACLIM=10000,15000,0,0   (If ACI1 voltage lower than 10mA or higher than 15mA, trigger an uplink)
620 620  
646 +
621 621  (% style="color:#4f81bd" %)**Trigger base on DI status**:
622 622  
623 623  DI status trigger Flag.
... ... @@ -705,6 +705,7 @@
705 705  When device got this command, it will send the MOD6 payload.
706 706  
707 707  
734 +
708 708  === 3.3.7 Payload Decoder ===
709 709  
710 710  (((
... ... @@ -713,6 +713,8 @@
713 713  
714 714  )))
715 715  
743 +
744 +
716 716  == 3.4 ​Configure LT via AT or Downlink ==
717 717  
718 718  User can configure LT I/O Controller via AT Commands or LoRaWAN Downlink Commands
... ... @@ -721,15 +721,18 @@
721 721  There are two kinds of Commands:
722 722  )))
723 723  
724 -* (% 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]]
725 725  
726 726  * (% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for LT-22222-L.  User can see these commands below:
727 727  
757 +
758 +
728 728  === 3.4.1 Common Commands ===
729 729  
730 730  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]]
731 731  
732 732  
764 +
733 733  === 3.4.2 Sensor related commands ===
734 734  
735 735  ==== 3.4.2.1 Set Transmit Interval ====
... ... @@ -753,6 +753,7 @@
753 753  )))
754 754  
755 755  
788 +
756 756  ==== 3.4.2.2 Set Work Mode (AT+MOD) ====
757 757  
758 758  Set work mode.
... ... @@ -774,6 +774,7 @@
774 774  )))
775 775  
776 776  
810 +
777 777  ==== 3.4.2.3 Poll an uplink ====
778 778  
779 779  * AT Command:
... ... @@ -790,9 +790,10 @@
790 790  **Example**: 0x08FF, ask device to send an Uplink
791 791  
792 792  
827 +
793 793  ==== 3.4.2.4 Enable Trigger Mode ====
794 794  
795 -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"]]
796 796  
797 797  * AT Command:
798 798  
... ... @@ -813,6 +813,7 @@
813 813  )))
814 814  
815 815  
851 +
816 816  ==== 3.4.2.5 Poll trigger settings ====
817 817  
818 818  Poll trigger settings,
... ... @@ -829,6 +829,7 @@
829 829  )))
830 830  
831 831  
868 +
832 832  ==== 3.4.2.6 Enable / Disable DI1/DI2/DI3 as trigger ====
833 833  
834 834  Enable Disable DI1/DI2/DI2 as trigger,
... ... @@ -852,6 +852,7 @@
852 852  )))
853 853  
854 854  
892 +
855 855  ==== 3.4.2.7 Trigger1 – Set DI1 or DI3 as trigger ====
856 856  
857 857  Set DI1 or DI3(for LT-33222-L) trigger.
... ... @@ -879,6 +879,7 @@
879 879  )))
880 880  
881 881  
920 +
882 882  ==== 3.4.2.8 Trigger2 – Set DI2 as trigger ====
883 883  
884 884  Set DI2 trigger.
... ... @@ -906,9 +906,10 @@
906 906  )))
907 907  
908 908  
948 +
909 909  ==== 3.4.2.9 Trigger – Set AC (current) as trigger ====
910 910  
911 -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"]]
912 912  
913 913  * AT Command:
914 914  
... ... @@ -921,19 +921,20 @@
921 921  
922 922  (% class="box infomessage" %)
923 923  (((
924 -**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"]]**
925 925  )))
926 926  
927 927  
968 +
928 928  ==== 3.4.2.10 Trigger – Set AV (voltage) as trigger ====
929 929  
930 -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"]]
931 931  
932 932  * AT Command:
933 933  
934 934  (% class="box infomessage" %)
935 935  (((
936 -**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"]]**
937 937  )))
938 938  
939 939  * Downlink Payload (prefix 0xAA 00 ):
... ... @@ -940,10 +940,11 @@
940 940  
941 941  (% class="box infomessage" %)
942 942  (((
943 -**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"]] **
944 944  )))
945 945  
946 946  
988 +
947 947  ==== 3.4.2.11 Trigger – Set minimum interval ====
948 948  
949 949  Set AV and AC trigger minimum interval, system won’t response to the second trigger within this set time after the first trigger.
... ... @@ -963,6 +963,7 @@
963 963  )))
964 964  
965 965  
1008 +
966 966  ==== 3.4.2.12 DO ~-~- Control Digital Output DO1/DO2/DO3 ====
967 967  
968 968  * AT Command:
... ... @@ -995,6 +995,7 @@
995 995  )))
996 996  
997 997  
1041 +
998 998  ==== 3.4.2.13 DO ~-~- Control Digital Output DO1/DO2/DO3 with time control ====
999 999  
1000 1000  * AT Command:
... ... @@ -1057,6 +1057,7 @@
1057 1057  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
1058 1058  
1059 1059  
1104 +
1060 1060  === 3.4.2.14 Relay ~-~- Control Relay Output RO1/RO2 ===
1061 1061  
1062 1062  * AT Command:
... ... @@ -1085,6 +1085,7 @@
1085 1085  Device will upload a packet if downlink code executes successfully.
1086 1086  
1087 1087  
1133 +
1088 1088  ==== 3.4.2.15 Relay ~-~- Control Relay Output RO1/RO2 with time control ====
1089 1089  
1090 1090  * AT Command:
... ... @@ -1135,15 +1135,16 @@
1135 1135  Relay 1 & relay2 will change to NC, last 2 seconds, then both change to NO.
1136 1136  
1137 1137  
1184 +
1138 1138  ==== 3.4.2.16 Counting ~-~- Voltage threshold counting ====
1139 1139  
1140 -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"]]
1141 1141  
1142 1142  * AT Command:
1143 1143  
1144 1144  (% class="box infomessage" %)
1145 1145  (((
1146 -**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"]]**
1147 1147  )))
1148 1148  
1149 1149  * Downlink Payload (prefix 0xA5):
... ... @@ -1154,6 +1154,7 @@
1154 1154  )))
1155 1155  
1156 1156  
1204 +
1157 1157  ==== 3.4.2.17 Counting ~-~- Pre-configure the Count Number ====
1158 1158  
1159 1159  * AT Command:
... ... @@ -1179,6 +1179,7 @@
1179 1179  )))
1180 1180  
1181 1181  
1230 +
1182 1182  ==== 3.4.2.18 Counting ~-~- Clear Counting ====
1183 1183  
1184 1184  Clear counting for counting mode
... ... @@ -1198,6 +1198,7 @@
1198 1198  )))
1199 1199  
1200 1200  
1250 +
1201 1201  ==== 3.4.2.19 Counting ~-~- Change counting mode save time ====
1202 1202  
1203 1203  * AT Command:
... ... @@ -1220,6 +1220,8 @@
1220 1220  
1221 1221  )))
1222 1222  
1273 +
1274 +
1223 1223  == 3.5 Integrate with Mydevice ==
1224 1224  
1225 1225  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:
... ... @@ -1238,6 +1238,7 @@
1238 1238  
1239 1239  [[image:image-20220524094641-12.png||height="402" width="718"]]
1240 1240  
1293 +
1241 1241  **Step 3**: Create an account or log in Mydevices.
1242 1242  
1243 1243  **Step 4**: Search LT-22222-L(for both LT-22222-L / LT-33222-L) and add DevEUI.(% style="display:none" %)
... ... @@ -1260,6 +1260,7 @@
1260 1260  [[image:image-20220524094909-5.png||height="341" width="734"]]
1261 1261  
1262 1262  
1316 +
1263 1263  == 3.6 Interface Detail ==
1264 1264  
1265 1265  === 3.6.1 Digital Input Port: DI1/DI2 /DI3 ( For LT-33222-L, low active ) ===
... ... @@ -1269,6 +1269,7 @@
1269 1269  [[image:1653356991268-289.png]]
1270 1270  
1271 1271  
1326 +
1272 1272  === 3.6.2 Digital Input Port: DI1/DI2 ( For LT-22222-L) ===
1273 1273  
1274 1274  (((
... ... @@ -1383,6 +1383,7 @@
1383 1383  )))
1384 1384  
1385 1385  
1441 +
1386 1386  === 3.6.3 Digital Output Port: DO1/DO2 /DO3 ===
1387 1387  
1388 1388  NPN output: GND or Float. Max voltage can apply to output pin is 36v.
... ... @@ -1390,6 +1390,7 @@
1390 1390  [[image:1653357531600-905.png]]
1391 1391  
1392 1392  
1449 +
1393 1393  === 3.6.4 Analog Input Interface ===
1394 1394  
1395 1395  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:
... ... @@ -1418,6 +1418,7 @@
1418 1418  [[image:1653357648330-671.png||height="155" width="733"]]
1419 1419  
1420 1420  
1478 +
1421 1421  === 3.6.5 Relay Output ===
1422 1422  
1423 1423  (((
... ... @@ -1861,6 +1861,11 @@
1861 1861  (((
1862 1862  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.
1863 1863  
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 +
1864 1864  
1865 1865  )))
1866 1866