Last modified by Saxer Lin on 2025/04/15 17:24
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From version < 82.37 >
edited by Xiaoling
on 2022/06/20 13:59
To version < 90.3 >
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... ... @@ -1,7 +1,6 @@
1 1  (% style="text-align:center" %)
2 2  [[image:image-20220523163353-1.jpeg||height="604" width="500"]]
3 3  
4 -**LT-22222-L LoRa IO Controller User Manual **
5 5  
6 6  
7 7  **Table of Contents:**
... ... @@ -42,6 +42,8 @@
42 42  
43 43  (((
44 44  2) User can set up a LoRaWAN gateway locally and configure the controller to connect to the gateway via wireless.
44 +
45 +
45 45  )))
46 46  
47 47  (((
... ... @@ -173,6 +173,7 @@
173 173  
174 174  == 1.3 Features ==
175 175  
177 +
176 176  * LoRaWAN Class A & Class C protocol
177 177  * Optional Customized LoRa Protocol
178 178  * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/RU864/IN865
... ... @@ -181,8 +181,12 @@
181 181  * Firmware upgradable via program port
182 182  * Counting
183 183  
186 +
187 +
188 +
184 184  == 1.4  Applications ==
185 185  
191 +
186 186  * Smart Buildings & Home Automation
187 187  * Logistics and Supply Chain Management
188 188  * Smart Metering
... ... @@ -190,8 +190,12 @@
190 190  * Smart Cities
191 191  * Smart Factory
192 192  
199 +
200 +
201 +
193 193  == 1.5 Hardware Variants ==
194 194  
204 +
195 195  (% border="1" style="background-color:#f7faff; width:500px" %)
196 196  |(% style="width:103px" %)**Model**|(% style="width:131px" %)**Photo**|(% style="width:334px" %)**Description**
197 197  |(% style="width:103px" %)**LT22222-L**|(% style="width:131px" %)[[image:1653296302983-697.png]]|(% style="width:334px" %)(((
... ... @@ -207,6 +207,7 @@
207 207  
208 208  = 2. Power ON Device =
209 209  
220 +
210 210  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.
211 211  
212 212  (((
... ... @@ -221,19 +221,24 @@
221 221  
222 222  == 3.1 How it works? ==
223 223  
235 +
224 224  (((
225 -The LT is configured as LoRaWAN OTAA Class C mode by default. It has OTAA keys to join network. To connect a local LoRaWAN network, user just need to input the OTAA keys in the network server and power on the LT. It will auto join the network via OTAA. For LT-22222-L, the LED will show the Join status: After power on **TX LED** will fast blink 5 times, LT-22222-L will enter working mode and start to JOIN LoRaWAN network. **TX LED** will be on for 5 seconds after joined in network. When there is message from server, the **RX LED** will be on for 1 second. 
237 +The LT is configured as LoRaWAN OTAA Class C mode by default. It has OTAA keys to join network. To connect a local LoRaWAN network, user just need to input the OTAA keys in the network server and power on the LT. It will auto join the network via OTAA. For LT-22222-L, the LED will show the Join status: After power on (% style="color:green" %)**TX LED**(%%) will fast blink 5 times, LT-22222-L will enter working mode and start to JOIN LoRaWAN network. (% style="color:green" %)**TX LED**(%%) will be on for 5 seconds after joined in network. When there is message from server, the RX LED will be on for 1 second. 
226 226  )))
227 227  
228 228  (((
229 -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.
241 +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.
230 230  )))
231 231  
232 232  
245 +
233 233  == 3.2 Example to join LoRaWAN network ==
234 234  
248 +
235 235  (((
236 236  This chapter shows an example for how to join the TTN LoRaWAN Network. Below is the network structure, we use our LG308 as LoRaWAN gateway here. 
251 +
252 +
237 237  )))
238 238  
239 239  [[image:image-20220523172350-1.png||height="266" width="864"]]
... ... @@ -241,6 +241,8 @@
241 241  
242 242  (((
243 243  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:
260 +
261 +
244 244  )))
245 245  
246 246  (((
... ... @@ -266,6 +266,7 @@
266 266  [[image:1653298023685-319.png]]
267 267  
268 268  
287 +
269 269  (((
270 270  (% 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.
271 271  )))
... ... @@ -276,17 +276,22 @@
276 276  
277 277  == 3.3 Uplink Payload ==
278 278  
298 +
279 279  There are five working modes + one interrupt mode on LT for different type application:
280 280  
281 -* **MOD1**: (default setting): 2 x ACI + 2AVI + DI + DO + RO
282 -* **MOD2**: Double DI Counting + DO + RO
283 -* **MOD3**: Single DI Counting + 2 x ACI + DO + RO
284 -* **MOD4**: Single DI Counting + 1 x Voltage Counting + DO + RO
285 -* **MOD5**: Single DI Counting + 2 x AVI + 1 x ACI + DO + RO
286 -* **ADDMOD6**: Trigger Mode, Optional, used together with MOD1 ~~ MOD5
301 +* (% style="color:blue" %)**MOD1**(%%): (default setting): 2 x ACI + 2AVI + DI + DO + RO
302 +* (% style="color:blue" %)**MOD2**(%%): Double DI Counting + DO + RO
303 +* (% style="color:blue" %)**MOD3**(%%): Single DI Counting + 2 x ACI + DO + RO
304 +* (% style="color:blue" %)**MOD4**(%%): Single DI Counting + 1 x Voltage Counting + DO + RO
305 +* (% style="color:blue" %)**MOD5**(%%): Single DI Counting + 2 x AVI + 1 x ACI + DO + RO
306 +* (% style="color:blue" %)**ADDMOD6**(%%): Trigger Mode, Optional, used together with MOD1 ~~ MOD5
287 287  
308 +
309 +
310 +
288 288  === 3.3.1 AT+MOD~=1, 2ACI+2AVI ===
289 289  
313 +
290 290  The uplink payload includes totally 9 bytes. Uplink packets use FPORT=2 and every 10 minutes send one uplink by default.
291 291  
292 292  [[image:image-20220523174024-3.png]]
... ... @@ -323,6 +323,7 @@
323 323  * [1] RO1 relay channel is close and the RO1 LED is ON.
324 324  * [0] RO2 relay channel is open and RO2 LED is OFF;
325 325  
350 +
326 326  **LT22222-L:**
327 327  
328 328  * [1] DI2 channel is high input and DI2 LED is ON;
... ... @@ -338,6 +338,9 @@
338 338  ** DO1 is high in case there is load between DO1 and V+.
339 339  ** DO1 LED is off in both case
340 340  
366 +
367 +
368 +
341 341  === 3.3.2 AT+MOD~=2, (Double DI Counting) ===
342 342  
343 343  
... ... @@ -406,11 +406,14 @@
406 406  
407 407  === 3.3.3 AT+MOD~=3, Single DI Counting + 2 x ACI ===
408 408  
437 +
409 409  **LT22222-L**: This mode the DI1 is used as a counting pin.
410 410  
411 411  [[image:image-20220523181246-5.png]]
412 412  
413 413  (((
443 +
444 +
414 414  (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
415 415  )))
416 416  
... ... @@ -424,6 +424,7 @@
424 424  (% style="color:red" %)Note: DO3 is not valid for LT-22222-L.
425 425  )))
426 426  
458 +
427 427  (((
428 428  **To use counting mode, please run:**
429 429  )))
... ... @@ -556,8 +556,8 @@
556 556  
557 557  For example, if user has configured below commands:
558 558  
559 -* **AT+MOD=1 ** **~-~->** The normal working mode
560 -* **AT+ADDMOD6=1**   **~-~->** Enable trigger
591 +* **AT+MOD=1 ** **~-~->**  The normal working mode
592 +* **AT+ADDMOD6=1**   **~-~->**  Enable trigger
561 561  
562 562  LT will keep monitoring AV1/AV2/AC1/AC2 every 5 seconds; LT will send uplink packets in two cases:
563 563  
... ... @@ -564,9 +564,9 @@
564 564  1. Periodically uplink (Base on TDC time). Payload is same as the normal MOD (MOD 1 for above command). This uplink uses LoRaWAN (% style="color:#4f81bd" %)**unconfirmed**(%%) data type
565 565  1. Trigger uplink when meet the trigger condition. LT will sent two packets in this case, the first uplink use payload specify in this mod (mod=6), the second packets use the normal mod payload(MOD=1 for above settings). Both Uplinks use LoRaWAN (% style="color:#4f81bd" %)**CONFIRMED data type.**
566 566  
567 -
568 568  (% style="color:#037691" %)**AT Command to set Trigger Condition**:
569 569  
601 +
570 570  (% style="color:#4f81bd" %)**Trigger base on voltage**:
571 571  
572 572  Format: AT+AVLIM=<AV1_LIMIT_LOW>,< AV1_LIMIT_HIGH>,<AV2_LIMIT_LOW>,< AV2_LIMIT_HIGH>
... ... @@ -696,6 +696,7 @@
696 696  
697 697  == 3.4 ​Configure LT via AT or Downlink ==
698 698  
731 +
699 699  User can configure LT I/O Controller via AT Commands or LoRaWAN Downlink Commands
700 700  
701 701  (((
... ... @@ -706,8 +706,12 @@
706 706  
707 707  * (% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for LT-22222-L.  User can see these commands below:
708 708  
742 +
743 +
744 +
709 709  === 3.4.1 Common Commands ===
710 710  
747 +
711 711  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]]
712 712  
713 713  
... ... @@ -714,8 +714,10 @@
714 714  
715 715  === 3.4.2 Sensor related commands ===
716 716  
754 +
717 717  ==== 3.4.2.1 Set Transmit Interval ====
718 718  
757 +
719 719  Set device uplink interval.
720 720  
721 721  * (% style="color:#037691" %)**AT Command:**
... ... @@ -735,6 +735,7 @@
735 735  
736 736  ==== 3.4.2.2 Set Work Mode (AT+MOD) ====
737 737  
777 +
738 738  Set work mode.
739 739  
740 740  * (% style="color:#037691" %)**AT Command:**
... ... @@ -754,6 +754,7 @@
754 754  
755 755  ==== 3.4.2.3 Poll an uplink ====
756 756  
797 +
757 757  * (% style="color:#037691" %)**AT Command:**
758 758  
759 759  There is no AT Command to poll uplink
... ... @@ -767,8 +767,10 @@
767 767  
768 768  
769 769  
811 +
770 770  ==== 3.4.2.4 Enable Trigger Mode ====
771 771  
814 +
772 772  Use of trigger mode, please check [[ADDMOD6>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
773 773  
774 774  * (% style="color:#037691" %)**AT Command:**
... ... @@ -789,6 +789,7 @@
789 789  
790 790  ==== 3.4.2.5 Poll trigger settings ====
791 791  
835 +
792 792  Poll trigger settings,
793 793  
794 794  * (% style="color:#037691" %)**AT Command:**
... ... @@ -798,7 +798,7 @@
798 798  
799 799  * (% style="color:#037691" %)**Downlink Payload (prefix 0x AB 06):**
800 800  
801 -**0xAB 06  **~/~/ Poll trigger settings, device will uplink trigger settings once receive this command
845 +**0xAB 06         **~/~/ Poll trigger settings, device will uplink trigger settings once receive this command
802 802  
803 803  
804 804  
... ... @@ -805,6 +805,7 @@
805 805  
806 806  ==== 3.4.2.6 Enable / Disable DI1/DI2/DI3 as trigger ====
807 807  
852 +
808 808  Enable Disable DI1/DI2/DI2 as trigger,
809 809  
810 810  * (% style="color:#037691" %)**AT Command:**
... ... @@ -825,6 +825,7 @@
825 825  
826 826  ==== 3.4.2.7 Trigger1 – Set DI1 or DI3 as trigger ====
827 827  
873 +
828 828  Set DI1 or DI3(for LT-33222-L) trigger.
829 829  
830 830  * (% style="color:#037691" %)**AT Command:**
... ... @@ -849,6 +849,7 @@
849 849  
850 850  ==== 3.4.2.8 Trigger2 – Set DI2 as trigger ====
851 851  
898 +
852 852  Set DI2 trigger.
853 853  
854 854  * (% style="color:#037691" %)**AT Command:**
... ... @@ -875,6 +875,7 @@
875 875  
876 876  ==== 3.4.2.9 Trigger – Set AC (current) as trigger ====
877 877  
925 +
878 878  Set current trigger , base on AC port. See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
879 879  
880 880  * (% style="color:#037691" %)**AT Command**
... ... @@ -891,6 +891,7 @@
891 891  
892 892  ==== 3.4.2.10 Trigger – Set AV (voltage) as trigger ====
893 893  
942 +
894 894  Set current trigger , base on AV port. See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
895 895  
896 896  * (% style="color:#037691" %)**AT Command**
... ... @@ -907,11 +907,12 @@
907 907  
908 908  ==== 3.4.2.11 Trigger – Set minimum interval ====
909 909  
959 +
910 910  Set AV and AC trigger minimum interval, system won't response to the second trigger within this set time after the first trigger.
911 911  
912 912  * (% style="color:#037691" %)**AT Command**
913 913  
914 -**AT+ATDC=5  ** Device won't response the second trigger within 5 minute after the first trigger.
964 +**AT+ATDC=5        ** Device won't response the second trigger within 5 minute after the first trigger.
915 915  
916 916  
917 917  * (% style="color:#037691" %)**Downlink Payload (prefix 0xAC )**
... ... @@ -918,11 +918,18 @@
918 918  
919 919  **0x AC aa bb   ** ~/~/ same as AT+ATDC=0x(aa bb)   . Unit (min)
920 920  
971 +(((
972 +
921 921  
974 +(% style="color:red" %)Note: ATDC setting must be more than 5min
975 +)))
922 922  
923 923  
978 +
979 +
924 924  ==== 3.4.2.12 DO ~-~- Control Digital Output DO1/DO2/DO3 ====
925 925  
982 +
926 926  * (% style="color:#037691" %)**AT Command**
927 927  
928 928  There is no AT Command to control Digital Output
... ... @@ -954,6 +954,7 @@
954 954  
955 955  ==== 3.4.2.13 DO ~-~- Control Digital Output DO1/DO2/DO3 with time control ====
956 956  
1014 +
957 957  * (% style="color:#037691" %)**AT Command**
958 958  
959 959  There is no AT Command to control Digital Output
... ... @@ -1020,6 +1020,7 @@
1020 1020  
1021 1021  ==== 3.4.2.14 Relay ~-~- Control Relay Output RO1/RO2 ====
1022 1022  
1081 +
1023 1023  * (% style="color:#037691" %)**AT Command:**
1024 1024  
1025 1025  There is no AT Command to control Relay Output
... ... @@ -1049,6 +1049,7 @@
1049 1049  
1050 1050  ==== 3.4.2.15 Relay ~-~- Control Relay Output RO1/RO2 with time control ====
1051 1051  
1111 +
1052 1052  * (% style="color:#037691" %)**AT Command:**
1053 1053  
1054 1054  There is no AT Command to control Relay Output
... ... @@ -1072,7 +1072,7 @@
1072 1072  
1073 1073  (% style="color:#4f81bd" %)**Third Byte(bb)**(%%): Control Method and Ports status:
1074 1074  
1075 -[[image:image-20220524093831-10.png]]
1135 +[[image:image-20220714135731-1.png||height="406" width="627"]]
1076 1076  
1077 1077  
1078 1078  (% style="color:#4f81bd" %)**Fourth/Fifth Bytes(cc)**(%%): Latching time. Unit: ms
... ... @@ -1082,21 +1082,21 @@
1082 1082  
1083 1083  **Example payload:**
1084 1084  
1085 -**~1. 05 01 11 07 D0**
1145 +**~1. 05 01 11 07 D**
1086 1086  
1087 -Relay1 and Relay 2 will be set to NO , last 2 seconds, then change back to original state.
1147 +Relay1 and Relay 2 will be set to NC , last 2 seconds, then change back to original state.
1088 1088  
1089 1089  **2. 05 01 10 07 D0**
1090 1090  
1091 -Relay1 will change to NO, Relay2 will change to NC, last 2 seconds, then both change back to original state.
1151 +Relay1 will change to NC, Relay2 will change to NO, last 2 seconds, then both change back to original state.
1092 1092  
1093 1093  **3. 05 00 01 07 D0**
1094 1094  
1095 -Relay1 will change to NC, Relay2 will change to NO, last 2 seconds, then relay change to NO, Relay2 change to NC.
1155 +Relay1 will change to NO, Relay2 will change to NC, last 2 seconds, then relay change to NC,Relay2 change to NO.
1096 1096  
1097 1097  **4. 05 00 00 07 D0**
1098 1098  
1099 -Relay 1 & relay2 will change to NC, last 2 seconds, then both change to NO.
1159 +Relay 1 & relay2 will change to NO, last 2 seconds, then both change to NC.
1100 1100  
1101 1101  
1102 1102  
... ... @@ -1103,6 +1103,7 @@
1103 1103  
1104 1104  ==== 3.4.2.16 Counting ~-~- Voltage threshold counting ====
1105 1105  
1166 +
1106 1106  When voltage exceed the threshold, count. Feature see [[MOD4>>||anchor="H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting"]]
1107 1107  
1108 1108  * (% style="color:#037691" %)**AT Command:**
... ... @@ -1119,6 +1119,7 @@
1119 1119  
1120 1120  ==== 3.4.2.17 Counting ~-~- Pre-configure the Count Number ====
1121 1121  
1183 +
1122 1122  * (% style="color:#037691" %)**AT Command:**
1123 1123  
1124 1124  **AT+SETCNT=aa,(bb cc dd ee) **
... ... @@ -1141,11 +1141,12 @@
1141 1141  
1142 1142  ==== 3.4.2.18 Counting ~-~- Clear Counting ====
1143 1143  
1206 +
1144 1144  Clear counting for counting mode
1145 1145  
1146 1146  * (% style="color:#037691" %)**AT Command:**
1147 1147  
1148 -(% style="color:#037691" %)​​​​​​​(%%)**AT+CLRCOUNT ** ~/~/ clear all counting
1211 +**AT+CLRCOUNT ** ~/~/ clear all counting
1149 1149  
1150 1150  
1151 1151  * (% style="color:#037691" %)**Downlink Payload (prefix 0xA6):**
... ... @@ -1157,6 +1157,7 @@
1157 1157  
1158 1158  ==== 3.4.2.19 Counting ~-~- Change counting mode save time ====
1159 1159  
1223 +
1160 1160  * (% style="color:#037691" %)**AT Command:**
1161 1161  
1162 1162  **AT+COUTIME=60  **~/~/ Set save time to 60 seconds. Device will save the counting result in internal flash every 60 seconds. (min value: 30)
... ... @@ -1176,6 +1176,7 @@
1176 1176  
1177 1177  == 3.5 Integrate with Mydevice ==
1178 1178  
1243 +
1179 1179  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:
1180 1180  
1181 1181  (((
... ... @@ -1184,14 +1184,15 @@
1184 1184  
1185 1185  (((
1186 1186  (% style="color:blue" %)**Step 2**(%%): To configure the Application to forward data to Mydevices you will need to add integration. To add the Mydevices integration, perform the following steps:
1252 +
1253 +
1187 1187  )))
1188 1188  
1189 -[[image:1653356737703-362.png||height="232" width="732"]]
1256 +[[image:image-20220719105525-1.png||height="377" width="677"]]
1190 1190  
1191 -[[image:image-20220524094641-11.png||height="390" width="723"]]
1192 1192  
1193 1193  
1194 -[[image:image-20220524094641-12.png||height="402" width="718"]]
1260 +[[image:image-20220719110247-2.png||height="388" width="683"]]
1195 1195  
1196 1196  
1197 1197  (% style="color:blue" %)**Step 3**(%%): Create an account or log in Mydevices.
... ... @@ -1224,8 +1224,10 @@
1224 1224  
1225 1225  == 3.6 Interface Detail ==
1226 1226  
1293 +
1227 1227  === 3.6.1 Digital Input Port: DI1/DI2 /DI3 ( For LT-33222-L, low active ) ===
1228 1228  
1296 +
1229 1229  Support NPN Type sensor
1230 1230  
1231 1231  [[image:1653356991268-289.png]]
... ... @@ -1234,6 +1234,7 @@
1234 1234  
1235 1235  === 3.6.2 Digital Input Port: DI1/DI2 ( For LT-22222-L) ===
1236 1236  
1305 +
1237 1237  (((
1238 1238  The DI port of LT-22222-L can support NPN or PNP output sensor.
1239 1239  )))
... ... @@ -1240,7 +1240,9 @@
1240 1240  
1241 1241  (((
1242 1242  (((
1243 -Internal circuit as below, the NEC2501 is a photocoupler, the Active current (from NEC2501 pin 1 to pin 2 is 1ma and the max current is 50mA. When there is active current pass NEC2501 pin1 to pin2. The DI will be active high
1312 +Internal circuit as below, the NEC2501 is a photocoupler, the Active current (from NEC2501 pin 1 to pin 2 is 1ma and the max current is 50mA. When there is active current pass NEC2501 pin1 to pin2. The DI will be active high.
1313 +
1314 +
1244 1244  )))
1245 1245  )))
1246 1246  
... ... @@ -1285,6 +1285,8 @@
1285 1285  
1286 1286  (((
1287 1287  
1359 +
1360 +
1288 1288  )))
1289 1289  
1290 1290  (((
... ... @@ -1316,6 +1316,8 @@
1316 1316  
1317 1317  (((
1318 1318  
1392 +
1393 +
1319 1319  )))
1320 1320  
1321 1321  (((
... ... @@ -1349,6 +1349,7 @@
1349 1349  
1350 1350  === 3.6.3 Digital Output Port: DO1/DO2 /DO3 ===
1351 1351  
1427 +
1352 1352  NPN output: GND or Float. Max voltage can apply to output pin is 36v.
1353 1353  
1354 1354  [[image:1653357531600-905.png]]
... ... @@ -1357,6 +1357,7 @@
1357 1357  
1358 1358  === 3.6.4 Analog Input Interface ===
1359 1359  
1436 +
1360 1360  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:
1361 1361  
1362 1362  
... ... @@ -1388,6 +1388,7 @@
1388 1388  
1389 1389  === 3.6.5 Relay Output ===
1390 1390  
1468 +
1391 1391  (((
1392 1392  The LT serial controller has two relay interfaces; each interface uses two pins of the screw terminal. User can connect other device’s Power Line to in serial of RO1_1 and RO_2. Such as below:
1393 1393  )))
... ... @@ -1400,6 +1400,7 @@
1400 1400  
1401 1401  == 3.7 LEDs Indicators ==
1402 1402  
1481 +
1403 1403  [[image:image-20220524100748-11.png]]
1404 1404  
1405 1405  
... ... @@ -1406,8 +1406,10 @@
1406 1406  
1407 1407  = 4. Use AT Command =
1408 1408  
1488 +
1409 1409  == 4.1 Access AT Command ==
1410 1410  
1491 +
1411 1411  LT supports AT Command set. User can use a USB to TTL adapter plus the 3.5mm Program Cable to connect to LT for using AT command, as below.
1412 1412  
1413 1413  [[image:1653358238933-385.png]]
... ... @@ -1612,6 +1612,7 @@
1612 1612  
1613 1613  == 4.2 Common AT Command Sequence ==
1614 1614  
1696 +
1615 1615  === 4.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
1616 1616  
1617 1617  (((
... ... @@ -1735,13 +1735,16 @@
1735 1735  
1736 1736  === 4.2.3 Change to Class A ===
1737 1737  
1820 +
1738 1738  If sensor JOINED
1739 1739  (% style="background-color:#dcdcdc" %)AT+CLASS=A
1740 1740  ATZ
1741 1741  
1742 1742  
1826 +
1743 1743  = 5. FAQ =
1744 1744  
1829 +
1745 1745  == 5.1 How to upgrade the image? ==
1746 1746  
1747 1747  
... ... @@ -1763,7 +1763,9 @@
1763 1763  
1764 1764  
1765 1765  (% style="color:blue" %)**For LT-22222-L**(%%):
1766 -Hold down the PRO button and then momentarily press the RST reset button and the **DO1 led** will change from OFF to ON. When **DO1 LED** is on, it means the device is in download mode.
1851 +Hold down the PRO button and then momentarily press the RST reset button and the (% style="color:red" %)**DO1 led**(%%) will change from OFF to ON. When (% style="color:red" %)**DO1 LED**(%%) is on, it means the device is in download mode.
1852 +
1853 +
1767 1767  )))
1768 1768  
1769 1769   [[image:image-20220524103407-12.png]]
... ... @@ -1775,6 +1775,7 @@
1775 1775  
1776 1776  (% style="color:red" %)**Notice**(%%): In case user has lost the program cable. User can hand made one from a 3.5mm cable. The pin mapping is:
1777 1777  
1865 +
1778 1778  [[image:1653360054704-518.png||height="186" width="745"]]
1779 1779  
1780 1780  
... ... @@ -1783,6 +1783,8 @@
1783 1783  
1784 1784  
1785 1785  == 5.2 How to change the LoRa Frequency Bands/Region? ==
1874 +
1875 +
1786 1786  )))
1787 1787  )))
1788 1788  
... ... @@ -1793,7 +1793,10 @@
1793 1793  (((
1794 1794  
1795 1795  
1886 +
1796 1796  == 5.3 How to set up LT to work with Single Channel Gateway such as LG01/LG02? ==
1888 +
1889 +
1797 1797  )))
1798 1798  
1799 1799  (((
... ... @@ -1811,7 +1811,7 @@
1811 1811  )))
1812 1812  
1813 1813  (((
1814 -(% style="color:#4f81bd" %)**Step1**(%%): Log in TTN, Create an ABP device in the application and input the network session key (NETSKEY), app session key (APPSKEY) from the device.
1907 +(% style="color:blue" %)**Step1**(%%):  Log in TTN, Create an ABP device in the application and input the network session key (NETSKEY), app session key (APPSKEY) from the device.
1815 1815  )))
1816 1816  
1817 1817  (((
... ... @@ -1819,12 +1819,12 @@
1819 1819  )))
1820 1820  
1821 1821  (((
1822 -(% style="color:red" %)Note: user just need to make sure above three keys match, User can change either in TTN or Device to make then match. In TTN, NETSKEY and APPSKEY can be configured by user in setting page, but Device Addr is generated by TTN.
1915 +(% style="color:red" %)**Note: user just need to make sure above three keys match, User can change either in TTN or Device to make then match. In TTN, NETSKEY and APPSKEY can be configured by user in setting page, but Device Addr is generated by TTN.**
1823 1823  )))
1824 1824  
1825 1825  
1826 1826  (((
1827 -(% style="color:#4f81bd" %)**Step2**(%%)**: **Run AT Command to make LT work in Single frequency & ABP mode. Below is the AT commands:
1920 +(% style="color:blue" %)**Step2**(%%)**:  **Run AT Command to make LT work in Single frequency & ABP mode. Below is the AT commands:
1828 1828  )))
1829 1829  
1830 1830  (((
... ... @@ -1848,16 +1848,21 @@
1848 1848  [[image:1653360498588-932.png||height="485" width="726"]]
1849 1849  
1850 1850  
1944 +
1851 1851  == 5.4 Can I see counting event in Serial? ==
1852 1852  
1947 +
1853 1853  (((
1854 -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.
1949 +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.
1855 1855  
1856 1856  
1952 +
1857 1857  == 5.5 Can i use point to point communication for LT-22222-L? ==
1858 1858  
1955 +
1859 1859  Yes, please refer [[Point to Point Communication>>doc:Main. Point to Point Communication of LT-22222-L.WebHome]]
1860 1860  
1958 +
1861 1861  
1862 1862  )))
1863 1863  
... ... @@ -1864,6 +1864,7 @@
1864 1864  (((
1865 1865  == 5.6 Why does the relay output become the default and open relay after the lt22222 is powered off? ==
1866 1866  
1965 +
1867 1867  If the device is not shut down, but directly powered off.
1868 1868  
1869 1869  It will default that this is a power-off state.
... ... @@ -1873,12 +1873,15 @@
1873 1873  After restart, the status before power failure will be read from flash.
1874 1874  
1875 1875  
1975 +
1876 1876  = 6. Trouble Shooting =
1877 1877  )))
1878 1878  
1879 1879  (((
1880 1880  (((
1881 -== 6.1 Downlink doesn’t work, how to solve it? ==
1981 +== 6.1 Downlink doesn't work, how to solve it? ==
1982 +
1983 +
1882 1882  )))
1883 1883  )))
1884 1884  
... ... @@ -1889,7 +1889,10 @@
1889 1889  (((
1890 1890  
1891 1891  
1994 +
1892 1892  == 6.2 Have trouble to upload image. ==
1996 +
1997 +
1893 1893  )))
1894 1894  
1895 1895  (((
... ... @@ -1899,7 +1899,10 @@
1899 1899  (((
1900 1900  
1901 1901  
1902 -== 6.3 Why I can’t join TTN in US915 /AU915 bands? ==
2007 +
2008 +== 6.3 Why I can't join TTN in US915 /AU915 bands? ==
2009 +
2010 +
1903 1903  )))
1904 1904  
1905 1905  (((
... ... @@ -1913,22 +1913,22 @@
1913 1913  
1914 1914  (% style="color:#4f81bd" %)**LT-22222-L-XXX:**
1915 1915  
1916 -
1917 1917  (% style="color:#4f81bd" %)**XXX:**
1918 1918  
1919 -* (% style="color:#4f81bd" %)**EU433**(%%): LT with frequency bands EU433
1920 -* (% style="color:#4f81bd" %)**EU868**(%%): LT with frequency bands EU868
1921 -* (% style="color:#4f81bd" %)**KR920**(%%): LT with frequency bands KR920
1922 -* (% style="color:#4f81bd" %)**CN470**(%%): LT with frequency bands CN470
1923 -* (% style="color:#4f81bd" %)**AS923**(%%): LT with frequency bands AS923
1924 -* (% style="color:#4f81bd" %)**AU915**(%%): LT with frequency bands AU915
1925 -* (% style="color:#4f81bd" %)**US915**(%%): LT with frequency bands US915
1926 -* (% style="color:#4f81bd" %)**IN865**(%%): LT with frequency bands IN865
1927 -* (% style="color:#4f81bd" %)**CN779**(%%): LT with frequency bands CN779
2026 +* (% style="color:red" %)**EU433**(%%):  LT with frequency bands EU433
2027 +* (% style="color:red" %)**EU868**(%%):  LT with frequency bands EU868
2028 +* (% style="color:red" %)**KR920**(%%):  LT with frequency bands KR920
2029 +* (% style="color:red" %)**CN470**(%%):  LT with frequency bands CN470
2030 +* (% style="color:red" %)**AS923**(%%):  LT with frequency bands AS923
2031 +* (% style="color:red" %)**AU915**(%%):  LT with frequency bands AU915
2032 +* (% style="color:red" %)**US915**(%%):  LT with frequency bands US915
2033 +* (% style="color:red" %)**IN865**(%%):  LT with frequency bands IN865
2034 +* (% style="color:red" %)**CN779**(%%):  LT with frequency bands CN779
1928 1928  
1929 1929  
1930 1930  
1931 1931  
2039 +
1932 1932  = 8. Packing Info =
1933 1933  
1934 1934  
... ... @@ -1949,8 +1949,10 @@
1949 1949  
1950 1950  
1951 1951  
2060 +
1952 1952  = 9. Support =
1953 1953  
2063 +
1954 1954  * (((
1955 1955  Support is provided Monday to Friday, from 09:00 to 18:00 GMT+8. Due to different timezones we cannot offer live support. However, your questions will be answered as soon as possible in the before-mentioned schedule.
1956 1956  )))
... ... @@ -1959,12 +1959,17 @@
1959 1959  
1960 1960  
1961 1961  
2072 +
1962 1962  
1963 1963  )))
1964 1964  
1965 1965  = 10. Reference​​​​​ =
1966 1966  
2078 +
1967 1967  * LT-22222-L: [[http:~~/~~/www.dragino.com/products/lora-lorawan-end-node/item/156-lt-22222-l.html>>url:http://www.dragino.com/products/lora-lorawan-end-node/item/156-lt-22222-l.html]]
1968 1968  * [[Image Download>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]]
1969 1969  * [[AT Command Manual>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/]]
1970 1970  * [[Hardware Source>>url:https://github.com/dragino/Lora/tree/master/LT/LT-33222-L/v1.0]]
2083 +
2084 +
2085 +
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