Last modified by Saxer Lin on 2025/04/15 17:24
<
From version < 75.16 >
edited by Xiaoling
on 2022/06/01 17:41
To version < 77.31 >
edited by Xiaoling
on 2022/06/10 08:43
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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:
... ... @@ -309,6 +309,7 @@
309 309  * [1] RO1 relay channel is close and the RO1 LED is ON.
310 310  * [0] RO2 relay channel is open and RO2 LED is OFF;
311 311  
325 +
312 312  **LT22222-L:**
313 313  
314 314  * [1] DI2 channel is high input and DI2 LED is ON;
... ... @@ -419,6 +419,7 @@
419 419  )))
420 420  
421 421  
436 +
422 422  === 3.3.3 AT+MOD~=3, Single DI Counting + 2 x ACI ===
423 423  
424 424  **LT22222-L**: This mode the DI1 is used as a counting pin.
... ... @@ -463,6 +463,8 @@
463 463  
464 464  )))
465 465  
481 +
482 +
466 466  === 3.3.4 AT+MOD~=4, Single DI Counting + 1 x Voltage Counting ===
467 467  
468 468  **LT22222-L**: This mode the DI1 is used as a counting pin.
... ... @@ -544,6 +544,7 @@
544 544  )))
545 545  
546 546  
564 +
547 547  === 3.3.5 AT+MOD~=5, Single DI Counting + 2 x AVI + 1 x ACI ===
548 548  
549 549  **LT22222-L**: This mode the DI1 is used as a counting pin.
... ... @@ -588,6 +588,8 @@
588 588  
589 589  )))
590 590  
609 +
610 +
591 591  === 3.3.6 AT+ADDMOD~=6. (Trigger Mode, Optional) ===
592 592  
593 593  (% style="color:#4f81bd" %)**This mode is an optional mode for trigger purpose. It can run together with other mode.**
... ... @@ -711,6 +711,7 @@
711 711  When device got this command, it will send the MOD6 payload.
712 712  
713 713  
734 +
714 714  === 3.3.7 Payload Decoder ===
715 715  
716 716  (((
... ... @@ -719,6 +719,8 @@
719 719  
720 720  )))
721 721  
743 +
744 +
722 722  == 3.4 ​Configure LT via AT or Downlink ==
723 723  
724 724  User can configure LT I/O Controller via AT Commands or LoRaWAN Downlink Commands
... ... @@ -731,11 +731,14 @@
731 731  
732 732  * (% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for LT-22222-L.  User can see these commands below:
733 733  
757 +
758 +
734 734  === 3.4.1 Common Commands ===
735 735  
736 736  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]]
737 737  
738 738  
764 +
739 739  === 3.4.2 Sensor related commands ===
740 740  
741 741  ==== 3.4.2.1 Set Transmit Interval ====
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759 759  )))
760 760  
761 761  
788 +
762 762  ==== 3.4.2.2 Set Work Mode (AT+MOD) ====
763 763  
764 764  Set work mode.
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780 780  )))
781 781  
782 782  
810 +
783 783  ==== 3.4.2.3 Poll an uplink ====
784 784  
785 785  * AT Command:
... ... @@ -796,6 +796,7 @@
796 796  **Example**: 0x08FF, ask device to send an Uplink
797 797  
798 798  
827 +
799 799  ==== 3.4.2.4 Enable Trigger Mode ====
800 800  
801 801  Use of trigger mode, please check [[ADDMOD6>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
... ... @@ -819,6 +819,7 @@
819 819  )))
820 820  
821 821  
851 +
822 822  ==== 3.4.2.5 Poll trigger settings ====
823 823  
824 824  Poll trigger settings,
... ... @@ -835,6 +835,7 @@
835 835  )))
836 836  
837 837  
868 +
838 838  ==== 3.4.2.6 Enable / Disable DI1/DI2/DI3 as trigger ====
839 839  
840 840  Enable Disable DI1/DI2/DI2 as trigger,
... ... @@ -858,6 +858,7 @@
858 858  )))
859 859  
860 860  
892 +
861 861  ==== 3.4.2.7 Trigger1 – Set DI1 or DI3 as trigger ====
862 862  
863 863  Set DI1 or DI3(for LT-33222-L) trigger.
... ... @@ -885,6 +885,7 @@
885 885  )))
886 886  
887 887  
920 +
888 888  ==== 3.4.2.8 Trigger2 – Set DI2 as trigger ====
889 889  
890 890  Set DI2 trigger.
... ... @@ -912,6 +912,7 @@
912 912  )))
913 913  
914 914  
948 +
915 915  ==== 3.4.2.9 Trigger – Set AC (current) as trigger ====
916 916  
917 917  Set current trigger , base on AC port. See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
... ... @@ -931,6 +931,7 @@
931 931  )))
932 932  
933 933  
968 +
934 934  ==== 3.4.2.10 Trigger – Set AV (voltage) as trigger ====
935 935  
936 936  Set current trigger , base on AV port. See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
... ... @@ -950,6 +950,7 @@
950 950  )))
951 951  
952 952  
988 +
953 953  ==== 3.4.2.11 Trigger – Set minimum interval ====
954 954  
955 955  Set AV and AC trigger minimum interval, system won’t response to the second trigger within this set time after the first trigger.
... ... @@ -969,6 +969,7 @@
969 969  )))
970 970  
971 971  
1008 +
972 972  ==== 3.4.2.12 DO ~-~- Control Digital Output DO1/DO2/DO3 ====
973 973  
974 974  * AT Command:
... ... @@ -1001,6 +1001,7 @@
1001 1001  )))
1002 1002  
1003 1003  
1041 +
1004 1004  ==== 3.4.2.13 DO ~-~- Control Digital Output DO1/DO2/DO3 with time control ====
1005 1005  
1006 1006  * AT Command:
... ... @@ -1063,6 +1063,7 @@
1063 1063  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
1064 1064  
1065 1065  
1104 +
1066 1066  === 3.4.2.14 Relay ~-~- Control Relay Output RO1/RO2 ===
1067 1067  
1068 1068  * AT Command:
... ... @@ -1091,6 +1091,7 @@
1091 1091  Device will upload a packet if downlink code executes successfully.
1092 1092  
1093 1093  
1133 +
1094 1094  ==== 3.4.2.15 Relay ~-~- Control Relay Output RO1/RO2 with time control ====
1095 1095  
1096 1096  * AT Command:
... ... @@ -1141,6 +1141,7 @@
1141 1141  Relay 1 & relay2 will change to NC, last 2 seconds, then both change to NO.
1142 1142  
1143 1143  
1184 +
1144 1144  ==== 3.4.2.16 Counting ~-~- Voltage threshold counting ====
1145 1145  
1146 1146  When voltage exceed the threshold, count. Feature see [[MOD4>>||anchor="H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting"]]
... ... @@ -1160,6 +1160,7 @@
1160 1160  )))
1161 1161  
1162 1162  
1204 +
1163 1163  ==== 3.4.2.17 Counting ~-~- Pre-configure the Count Number ====
1164 1164  
1165 1165  * AT Command:
... ... @@ -1185,6 +1185,7 @@
1185 1185  )))
1186 1186  
1187 1187  
1230 +
1188 1188  ==== 3.4.2.18 Counting ~-~- Clear Counting ====
1189 1189  
1190 1190  Clear counting for counting mode
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1204 1204  )))
1205 1205  
1206 1206  
1250 +
1207 1207  ==== 3.4.2.19 Counting ~-~- Change counting mode save time ====
1208 1208  
1209 1209  * AT Command:
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1226 1226  
1227 1227  )))
1228 1228  
1273 +
1274 +
1229 1229  == 3.5 Integrate with Mydevice ==
1230 1230  
1231 1231  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:
... ... @@ -1244,6 +1244,7 @@
1244 1244  
1245 1245  [[image:image-20220524094641-12.png||height="402" width="718"]]
1246 1246  
1293 +
1247 1247  **Step 3**: Create an account or log in Mydevices.
1248 1248  
1249 1249  **Step 4**: Search LT-22222-L(for both LT-22222-L / LT-33222-L) and add DevEUI.(% style="display:none" %)
... ... @@ -1266,6 +1266,7 @@
1266 1266  [[image:image-20220524094909-5.png||height="341" width="734"]]
1267 1267  
1268 1268  
1316 +
1269 1269  == 3.6 Interface Detail ==
1270 1270  
1271 1271  === 3.6.1 Digital Input Port: DI1/DI2 /DI3 ( For LT-33222-L, low active ) ===
... ... @@ -1275,6 +1275,7 @@
1275 1275  [[image:1653356991268-289.png]]
1276 1276  
1277 1277  
1326 +
1278 1278  === 3.6.2 Digital Input Port: DI1/DI2 ( For LT-22222-L) ===
1279 1279  
1280 1280  (((
... ... @@ -1389,6 +1389,7 @@
1389 1389  )))
1390 1390  
1391 1391  
1441 +
1392 1392  === 3.6.3 Digital Output Port: DO1/DO2 /DO3 ===
1393 1393  
1394 1394  NPN output: GND or Float. Max voltage can apply to output pin is 36v.
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1396 1396  [[image:1653357531600-905.png]]
1397 1397  
1398 1398  
1449 +
1399 1399  === 3.6.4 Analog Input Interface ===
1400 1400  
1401 1401  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:
... ... @@ -1424,6 +1424,7 @@
1424 1424  [[image:1653357648330-671.png||height="155" width="733"]]
1425 1425  
1426 1426  
1478 +
1427 1427  === 3.6.5 Relay Output ===
1428 1428  
1429 1429  (((
... ... @@ -1867,6 +1867,11 @@
1867 1867  (((
1868 1868  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.
1869 1869  
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 +
1870 1870  
1871 1871  )))
1872 1872  

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