Last modified by Mengting Qiu on 2025/06/04 18:42

From version 54.2
edited by Xiaoling
on 2022/05/24 10:02
Change comment: There is no comment for this version
To version 66.22
edited by Xiaoling
on 2022/05/24 13:56
Change comment: There is no comment for this version

Summary

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Content
... ... @@ -45,44 +45,114 @@
45 45  
46 46  == 1.2  Specifications ==
47 47  
48 +(((
48 48  **Hardware System:**
50 +)))
49 49  
50 -* STM32L072CZT6 MCU
51 -* SX1276/78 Wireless Chip 
52 -* Power Consumption:
53 -** Idle: 4mA@12v
54 -** 20dB Transmit: 34mA@12v
52 +* (((
53 +STM32L072CZT6 MCU
54 +)))
55 +* (((
56 +SX1276/78 Wireless Chip 
57 +)))
58 +* (((
59 +(((
60 +Power Consumption:
61 +)))
55 55  
63 +* (((
64 +Idle: 4mA@12v
65 +)))
66 +* (((
67 +20dB Transmit: 34mA@12v
68 +)))
69 +)))
70 +
71 +(((
56 56  **Interface for Model: LT22222-L:**
73 +)))
57 57  
58 -* 2 x Digital dual direction Input (Detect High/Low signal, Max: 50v, or 220v with optional external resistor)
59 -* 2 x Digital Output (NPN output. Max pull up voltage 36V,450mA)
60 -* 2 x Relay Output (5A@250VAC / 30VDC)
61 -* 2 x 0~~20mA Analog Input (res:0.01mA)
62 -* 2 x 0~~30V Analog Input (res:0.01v)
63 -* Power Input 7~~ 24V DC. 
75 +* (((
76 +2 x Digital dual direction Input (Detect High/Low signal, Max: 50v, or 220v with optional external resistor)
77 +)))
78 +* (((
79 +2 x Digital Output (NPN output. Max pull up voltage 36V,450mA)
80 +)))
81 +* (((
82 +2 x Relay Output (5A@250VAC / 30VDC)
83 +)))
84 +* (((
85 +2 x 0~~20mA Analog Input (res:0.01mA)
86 +)))
87 +* (((
88 +2 x 0~~30V Analog Input (res:0.01v)
89 +)))
90 +* (((
91 +Power Input 7~~ 24V DC. 
92 +)))
64 64  
94 +(((
65 65  **LoRa Spec:**
96 +)))
66 66  
67 -* Frequency Range:
68 -** Band 1 (HF): 862 ~~ 1020 Mhz
69 -** Band 2 (LF): 410 ~~ 528 Mhz
70 -* 168 dB maximum link budget.
71 -* +20 dBm - 100 mW constant RF output vs.
72 -* +14 dBm high efficiency PA.
73 -* Programmable bit rate up to 300 kbps.
74 -* High sensitivity: down to -148 dBm.
75 -* Bullet-proof front end: IIP3 = -12.5 dBm.
76 -* Excellent blocking immunity.
77 -* Low RX current of 10.3 mA, 200 nA register retention.
78 -* Fully integrated synthesizer with a resolution of 61 Hz.
79 -* FSK, GFSK, MSK, GMSK, LoRaTM and OOK modulation.
80 -* Built-in bit synchronizer for clock recovery.
81 -* Preamble detection.
82 -* 127 dB Dynamic Range RSSI.
83 -* Automatic RF Sense and CAD with ultra-fast AFC.
84 -* Packet engine up to 256 bytes with CRC.
98 +* (((
99 +(((
100 +Frequency Range:
101 +)))
85 85  
103 +* (((
104 +Band 1 (HF): 862 ~~ 1020 Mhz
105 +)))
106 +* (((
107 +Band 2 (LF): 410 ~~ 528 Mhz
108 +)))
109 +)))
110 +* (((
111 +168 dB maximum link budget.
112 +)))
113 +* (((
114 ++20 dBm - 100 mW constant RF output vs.
115 +)))
116 +* (((
117 ++14 dBm high efficiency PA.
118 +)))
119 +* (((
120 +Programmable bit rate up to 300 kbps.
121 +)))
122 +* (((
123 +High sensitivity: down to -148 dBm.
124 +)))
125 +* (((
126 +Bullet-proof front end: IIP3 = -12.5 dBm.
127 +)))
128 +* (((
129 +Excellent blocking immunity.
130 +)))
131 +* (((
132 +Low RX current of 10.3 mA, 200 nA register retention.
133 +)))
134 +* (((
135 +Fully integrated synthesizer with a resolution of 61 Hz.
136 +)))
137 +* (((
138 +FSK, GFSK, MSK, GMSK, LoRaTM and OOK modulation.
139 +)))
140 +* (((
141 +Built-in bit synchronizer for clock recovery.
142 +)))
143 +* (((
144 +Preamble detection.
145 +)))
146 +* (((
147 +127 dB Dynamic Range RSSI.
148 +)))
149 +* (((
150 +Automatic RF Sense and CAD with ultra-fast AFC.
151 +)))
152 +* (((
153 +Packet engine up to 256 bytes with CRC.
154 +)))
155 +
86 86  == 1.3 Features ==
87 87  
88 88  * LoRaWAN Class A & Class C protocol
... ... @@ -129,13 +129,21 @@
129 129  
130 130  == 3.1 How it works? ==
131 131  
202 +(((
132 132  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. 
204 +)))
133 133  
134 -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>>path:#AT_Command]] to set the keys in the devices.
206 +(((
207 +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>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/#H4.UseATCommand]] to set the keys in the devices.
208 +)))
135 135  
210 +(((
136 136  3.2 Example to join LoRaWAN network
212 +)))
137 137  
214 +(((
138 138  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. 
216 +)))
139 139  
140 140  [[image:image-20220523172350-1.png||height="266" width="864"]]
141 141  
... ... @@ -235,7 +235,9 @@
235 235  
236 236  **For LT-22222-L**: this mode the **DI1 and DI2** are used as counting pins.
237 237  
316 +(((
238 238  Total : 11 bytes payload
318 +)))
239 239  
240 240  [[image:image-20220523180452-3.png]]
241 241  
... ... @@ -327,7 +327,7 @@
327 327  **ATZ**
328 328  )))
329 329  
330 -Other AT Commands for counting are similar to [[MOD2 Counting Command>>path:#COUNT_COMMAND]].
410 +Other AT Commands for counting are similar to [[MOD2 Counting Command>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/#H3.3.2AT2BMOD3D22C28DoubleDICounting29]].
331 331  
332 332  === 3.3.4 AT+MOD~=4, Single DI Counting + 1 x Voltage Counting ===
333 333  
... ... @@ -362,7 +362,7 @@
362 362  )))
363 363  
364 364  
365 -Other AT Commands for counting are similar to [[MOD2 Counting Command>>path:#COUNT_COMMAND]].
445 +Other AT Commands for counting are similar to [[MOD2 Counting Command>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/#H3.3.2AT2BMOD3D22C28DoubleDICounting29]].
366 366  
367 367  **Plus below command for AVI1 Counting:**
368 368  
... ... @@ -414,7 +414,7 @@
414 414  **ATZ**
415 415  )))
416 416  
417 -Other AT Commands for counting are similar to [[MOD2 Counting Command>>path:#COUNT_COMMAND]].
497 +Other AT Commands for counting are similar to [[MOD2 Counting Command>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/#H3.3.2AT2BMOD3D22C28DoubleDICounting29]].
418 418  
419 419  === 3.3.6 AT+ADDMOD~=6. (Trigger Mode, Optional) ===
420 420  
... ... @@ -463,7 +463,7 @@
463 463  
464 464  **Downlink Command to set Trigger Condition**
465 465  
466 -Type Code: 0xAA. Downlink command same as AT Command [[AT+AVLIM, AT+ACLIM>>path:#AT_Trigger]]
546 +Type Code: 0xAA. Downlink command same as AT Command **AT+AVLIM, AT+ACLIM**
467 467  
468 468  Format: AA xx yy1 yy1 yy2 yy2 yy3 yy3 yy4 yy4
469 469  
... ... @@ -483,7 +483,7 @@
483 483  
484 484  Same as AT+AVLIM=5000,0,0,0   (If AVI1 voltage lower than 5V , trigger uplink, 0 means ignore)
485 485  
486 -Example2: AA 02 01 00
566 +**Example2**: AA 02 01 00
487 487  
488 488  Same as AT+ DTRI =1,0  (Enable DI1 trigger / disable DI2 trigger)
489 489  
... ... @@ -1043,7 +1043,7 @@
1043 1043  
1044 1044  [[image:image-20220524094641-12.png||height="402" width="718"]]
1045 1045  
1046 -**Step **3: Create an account or log in Mydevices.
1126 +**Step 3**: Create an account or log in Mydevices.
1047 1047  
1048 1048  **Step 4**: Search LT-22222-L(for both LT-22222-L / LT-33222-L) and add DevEUI.(% style="display:none" %)
1049 1049  
... ... @@ -1053,7 +1053,6 @@
1053 1053  
1054 1054  After added, the sensor data arrive TTN, it will also arrive and show in Mydevices.
1055 1055  
1056 -
1057 1057  [[image:image-20220524094909-1.png||height="335" width="729"]]
1058 1058  
1059 1059  [[image:image-20220524094909-2.png||height="337" width="729"]]
... ... @@ -1064,10 +1064,6 @@
1064 1064  
1065 1065  [[image:image-20220524094909-5.png||height="341" width="734"]]
1066 1066  
1067 -
1068 -
1069 -
1070 -
1071 1071  == 3.6 Interface Detail ==
1072 1072  
1073 1073  === 3.6.1 Digital Input Port: DI1/DI2 /DI3 ( For LT-33222-L, low active ) ===
... ... @@ -1083,8 +1083,10 @@
1083 1083  )))
1084 1084  
1085 1085  (((
1161 +(((
1086 1086  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
1087 1087  )))
1164 +)))
1088 1088  
1089 1089  [[image:1653357170703-587.png]]
1090 1090  
... ... @@ -1116,9 +1116,9 @@
1116 1116  
1117 1117  So when sensor active, the current between NEC2501 pin1 and pin2 is:
1118 1118  
1119 -[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png]]** [[image:image-20220524095628-8.png]]= DI1+ / 1K.**
1196 +[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]][[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]][[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]]** [[image:image-20220524095628-8.png]]= DI1+ / 1K.**
1120 1120  
1121 -If **DI1+ = 24v**, the [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png]]**[[image:image-20220524095628-8.png]]** = 24mA , So the LT-22222-L will be able to detect this high active signal.
1198 +If **DI1+ = 24v**, the [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]][[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]][[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]]**[[image:image-20220524095628-8.png]]** = 24mA , So the LT-22222-L will be able to detect this high active signal.
1122 1122  
1123 1123  
1124 1124  **Example3**: Connect to a 220v high active sensor.
... ... @@ -1130,9 +1130,9 @@
1130 1130  
1131 1131  So when sensor active, the current between NEC2501 pin1 and pin2 is:
1132 1132  
1133 - [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png]]**[[image:image-20220524095628-8.png]] = DI1+ / 51K.**
1210 + [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]][[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]][[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]]**[[image:image-20220524095628-8.png]] = DI1+ / 51K.**
1134 1134  
1135 -If sensor output is 220v, the (% id="cke_bm_243359S" style="display:none" %) [[image:image-20220524095628-8.png]](%%) = DI1+ / 51K.  = 4.3mA , So the LT-22222-L will be able to detect this high active signal safely.
1212 +If sensor output is 220v, the (% id="cke_bm_243359S" style="display:none" %)[[image:image-20220524095628-8.png]](%%) = DI1+ / 51K.  = 4.3mA , So the LT-22222-L will be able to detect this high active signal safely.
1136 1136  
1137 1137  === 3.6.3 Digital Output Port: DO1/DO2 /DO3 ===
1138 1138  
... ... @@ -1169,415 +1169,573 @@
1169 1169  
1170 1170  === 3.6.5 Relay Output ===
1171 1171  
1249 +(((
1172 1172  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:
1251 +)))
1173 1173  
1174 -
1175 1175  [[image:image-20220524100215-9.png]]
1176 1176  
1177 -
1178 1178  [[image:image-20220524100215-10.png||height="382" width="723"]]
1179 1179  
1257 +== 3.7 LEDs Indicators ==
1180 1180  
1259 +[[image:image-20220524100748-11.png]]
1181 1181  
1261 += 4. Use AT Command =
1182 1182  
1263 +== 4.1 Access AT Command ==
1183 1183  
1184 -
1185 -1.
1186 -11. LEDs Indicators
1187 -
1188 -(% border="1" style="background-color:#f7faff" %)
1189 -|**LEDs**|**Feature**
1190 -|**PWR**|Always on if there is power
1191 -|**SYS**|After device is powered on, the SYS will **fast blink in GREEN** for 5 times, means RS485-LN start to join LoRaWAN network. If join success, SYS will be **on GREEN for 5 seconds. **SYS will **blink Blue** on every upload and **blink Green** once receive a downlink message.
1192 -|**TX**|(((
1193 -Device boot: TX blinks 5 times.
1194 -
1195 -Successful join network: TX ON for 5 seconds.
1196 -
1197 -Transmit a LoRa packet: TX blinks once
1198 -)))
1199 -|**RX**|RX blinks once when receive a packet.
1200 -|**DO1**|
1201 -|**DO2**|
1202 -|**DO3**|
1203 -|**DI2**|(((
1204 -For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1205 -
1206 -For LT-33222-L: ON when DI2 is low, LOW when DI2 is high
1207 -)))
1208 -|**DI2**|(((
1209 -For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1210 -
1211 -For LT-33222-L: ON when DI2 is low, LOW when DI2 is high
1212 -)))
1213 -|**DI3**|For LT-33222-L ONLY: ON when DI3 is low, LOW when DI3 is high
1214 -|**DI2**|(((
1215 -For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1216 -
1217 -For LT-33222-L: ON when DI2 is low, LOW when DI2 is high
1218 -)))
1219 -|**RO1**|
1220 -|**RO2**|
1221 -
1222 -1. Use AT Command
1223 -11. Access AT Command
1224 -
1225 1225  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.
1226 1226  
1227 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image029.png]]
1267 +[[image:1653358238933-385.png]]
1228 1228  
1269 +In PC, User needs to set (% style="color:#4f81bd" %)**serial tool**(%%)(such as [[putty>>url:https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]], SecureCRT) baud rate to (% style="color:green" %)**9600**(%%) to access to access serial console for LT. The AT commands are disable by default and need to enter password (default:(% style="color:green" %)**123456**)(%%) to active it. As shown below:
1229 1229  
1230 -In PC, User needs to set **serial tool**(such as [[putty>>url:https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]], SecureCRT) baud rate to **9600** to access to access serial console for LT. The AT commands are disable by default and need to enter password (default:**123456**) to active it. As shown below:
1271 +[[image:1653358355238-883.png]]
1231 1231  
1232 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image030.png]]
1233 -
1234 -
1235 1235  More detail AT Command manual can be found at [[AT Command Manual>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/]]
1236 1236  
1275 +(((
1237 1237  AT+<CMD>?        : Help on <CMD>
1277 +)))
1238 1238  
1279 +(((
1239 1239  AT+<CMD>         : Run <CMD>
1281 +)))
1240 1240  
1283 +(((
1241 1241  AT+<CMD>=<value> : Set the value
1285 +)))
1242 1242  
1287 +(((
1243 1243  AT+<CMD>=?       : Get the value
1289 +)))
1244 1244  
1291 +(((
1245 1245  ATZ: Trig a reset of the MCU
1293 +)))
1246 1246  
1295 +(((
1247 1247  AT+FDR: Reset Parameters to Factory Default, Keys Reserve 
1297 +)))
1248 1248  
1299 +(((
1249 1249  AT+DEUI: Get or Set the Device EUI
1301 +)))
1250 1250  
1303 +(((
1251 1251  AT+DADDR: Get or Set the Device Address
1305 +)))
1252 1252  
1307 +(((
1253 1253  AT+APPKEY: Get or Set the Application Key
1309 +)))
1254 1254  
1311 +(((
1255 1255  AT+NWKSKEY: Get or Set the Network Session Key
1313 +)))
1256 1256  
1315 +(((
1257 1257  AT+APPSKEY: Get or Set the Application Session Key
1317 +)))
1258 1258  
1319 +(((
1259 1259  AT+APPEUI: Get or Set the Application EUI
1321 +)))
1260 1260  
1323 +(((
1261 1261  AT+ADR: Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1325 +)))
1262 1262  
1327 +(((
1263 1263  AT+TXP: Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1329 +)))
1264 1264  
1331 +(((
1265 1265  AT+DR: Get or Set the Data Rate. (0-7 corresponding to DR_X)  
1333 +)))
1266 1266  
1335 +(((
1267 1267  AT+DCS: Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1337 +)))
1268 1268  
1339 +(((
1269 1269  AT+PNM: Get or Set the public network mode. (0: off, 1: on)
1341 +)))
1270 1270  
1343 +(((
1271 1271  AT+RX2FQ: Get or Set the Rx2 window frequency
1345 +)))
1272 1272  
1347 +(((
1273 1273  AT+RX2DR: Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1349 +)))
1274 1274  
1351 +(((
1275 1275  AT+RX1DL: Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1353 +)))
1276 1276  
1355 +(((
1277 1277  AT+RX2DL: Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1357 +)))
1278 1278  
1359 +(((
1279 1279  AT+JN1DL: Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1361 +)))
1280 1280  
1363 +(((
1281 1281  AT+JN2DL: Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1365 +)))
1282 1282  
1367 +(((
1283 1283  AT+NJM: Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1369 +)))
1284 1284  
1371 +(((
1285 1285  AT+NWKID: Get or Set the Network ID
1373 +)))
1286 1286  
1375 +(((
1287 1287  AT+FCU: Get or Set the Frame Counter Uplink
1377 +)))
1288 1288  
1379 +(((
1289 1289  AT+FCD: Get or Set the Frame Counter Downlink
1381 +)))
1290 1290  
1383 +(((
1291 1291  AT+CLASS: Get or Set the Device Class
1385 +)))
1292 1292  
1387 +(((
1293 1293  AT+JOIN: Join network
1389 +)))
1294 1294  
1391 +(((
1295 1295  AT+NJS: Get OTAA Join Status
1393 +)))
1296 1296  
1395 +(((
1297 1297  AT+SENDB: Send hexadecimal data along with the application port
1397 +)))
1298 1298  
1399 +(((
1299 1299  AT+SEND: Send text data along with the application port
1401 +)))
1300 1300  
1403 +(((
1301 1301  AT+RECVB: Print last received data in binary format (with hexadecimal values)
1405 +)))
1302 1302  
1407 +(((
1303 1303  AT+RECV: Print last received data in raw format
1409 +)))
1304 1304  
1411 +(((
1305 1305  AT+VER: Get current image version and Frequency Band
1413 +)))
1306 1306  
1415 +(((
1307 1307  AT+CFM: Get or Set the confirmation mode (0-1)
1417 +)))
1308 1308  
1419 +(((
1309 1309  AT+CFS: Get confirmation status of the last AT+SEND (0-1)
1421 +)))
1310 1310  
1423 +(((
1311 1311  AT+SNR: Get the SNR of the last received packet
1425 +)))
1312 1312  
1427 +(((
1313 1313  AT+RSSI: Get the RSSI of the last received packet
1429 +)))
1314 1314  
1431 +(((
1315 1315  AT+TDC: Get or set the application data transmission interval in ms
1433 +)))
1316 1316  
1435 +(((
1317 1317  AT+PORT: Get or set the application port
1437 +)))
1318 1318  
1439 +(((
1319 1319  AT+DISAT: Disable AT commands
1441 +)))
1320 1320  
1443 +(((
1321 1321  AT+PWORD: Set password, max 9 digits
1445 +)))
1322 1322  
1447 +(((
1323 1323  AT+CHS: Get or Set Frequency (Unit: Hz) for Single Channel Mode
1449 +)))
1324 1324  
1451 +(((
1325 1325  AT+CHE: Get or Set eight channels mode, Only for US915, AU915, CN470
1453 +)))
1326 1326  
1455 +(((
1327 1327  AT+CFG: Print all settings
1457 +)))
1328 1328  
1459 +== 4.2 Common AT Command Sequence ==
1329 1329  
1461 +=== 4.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
1330 1330  
1331 -1.
1332 -11. Common AT Command Sequence
1333 -111. Multi-channel ABP mode (Use with SX1301/LG308)
1334 -
1463 +(((
1335 1335  If device has not joined network yet:
1465 +)))
1336 1336  
1337 -123456
1467 +(((
1468 +(% style="background-color:#dcdcdc" %)123456
1469 +)))
1338 1338  
1339 -AT+FDR
1471 +(((
1472 +(% style="background-color:#dcdcdc" %)AT+FDR
1473 +)))
1340 1340  
1341 -123456
1475 +(((
1476 +(% style="background-color:#dcdcdc" %)123456
1477 +)))
1342 1342  
1343 -AT+NJM=0
1479 +(((
1480 +(% style="background-color:#dcdcdc" %)AT+NJM=0
1481 +)))
1344 1344  
1345 -ATZ
1483 +(((
1484 +(% style="background-color:#dcdcdc" %)ATZ
1485 +)))
1346 1346  
1347 1347  
1488 +(((
1348 1348  If device already joined network:
1490 +)))
1349 1349  
1350 -AT+NJM=0
1492 +(((
1493 +(% style="background-color:#dcdcdc" %)AT+NJM=0
1494 +)))
1351 1351  
1352 -ATZ
1496 +(((
1497 +(% style="background-color:#dcdcdc" %)ATZ
1498 +)))
1353 1353  
1354 -1.
1355 -11.
1356 -111. Single-channel ABP mode (Use with LG01/LG02)
1500 +=== 4.2.2 Single-channel ABP mode (Use with LG01/LG02) ===
1357 1357  
1358 -123456   Enter Password to have AT access.
1502 +(((
1503 +(% style="background-color:#dcdcdc" %) 123456(%%)   Enter Password to have AT access.
1504 +)))
1359 1359  
1360 -AT+FDR   Reset Parameters to Factory Default, Keys Reserve
1506 +(((
1507 +(% style="background-color:#dcdcdc" %) AT+FDR(%%)   Reset Parameters to Factory Default, Keys Reserve
1508 +)))
1361 1361  
1362 -123456   Enter Password to have AT access.
1510 +(((
1511 +(% style="background-color:#dcdcdc" %) 123456(%%)   Enter Password to have AT access.
1512 +)))
1363 1363  
1364 -AT+CLASS=C Set to work in CLASS C
1514 +(((
1515 +(% style="background-color:#dcdcdc" %) AT+CLASS=C(%%) Set to work in CLASS C
1516 +)))
1365 1365  
1366 -AT+NJM=0 Set to ABP mode
1518 +(((
1519 +(% style="background-color:#dcdcdc" %) AT+NJM=0(%%) Set to ABP mode
1520 +)))
1367 1367  
1368 -AT+ADR=0 Set the Adaptive Data Rate Off
1522 +(((
1523 +(% style="background-color:#dcdcdc" %) AT+ADR=0(%%) Set the Adaptive Data Rate Off
1524 +)))
1369 1369  
1370 -AT+DR=5  Set Data Rate
1526 +(((
1527 +(% style="background-color:#dcdcdc" %) AT+DR=5(%%)  Set Data Rate
1528 +)))
1371 1371  
1372 -AT+TDC=60000  Set transmit interval to 60 seconds
1530 +(((
1531 +(% style="background-color:#dcdcdc" %) AT+TDC=60000(%%)  Set transmit interval to 60 seconds
1532 +)))
1373 1373  
1374 -AT+CHS=868400000 Set transmit frequency to 868.4Mhz
1534 +(((
1535 +(% style="background-color:#dcdcdc" %) AT+CHS=868400000(%%) Set transmit frequency to 868.4Mhz
1536 +)))
1375 1375  
1376 -AT+RX2FQ=868400000 Set RX2Frequency to 868.4Mhz (according to the result from server)
1538 +(((
1539 +(% style="background-color:#dcdcdc" %) AT+RX2FQ=868400000(%%) Set RX2Frequency to 868.4Mhz (according to the result from server)
1540 +)))
1377 1377  
1378 -AT+RX2DR=5  Set RX2DR to match the downlink DR from server. see below
1542 +(((
1543 +(% style="background-color:#dcdcdc" %) AT+RX2DR=5(%%)  Set RX2DR to match the downlink DR from server. see below
1544 +)))
1379 1379  
1380 -AT+DADDR=26 01 1A F1 Set Device Address to 26 01 1A F1, this ID can be found in the LoRa Server portal.
1546 +(((
1547 +(% style="background-color:#dcdcdc" %) AT+DADDR=26 01 1A F1 (%%)Set Device Address to 26 01 1A F1, this ID can be found in the LoRa Server portal.
1548 +)))
1381 1381  
1382 -ATZ          Reset MCU
1550 +(((
1551 +(% style="background-color:#dcdcdc" %) ATZ         (%%) Reset MCU
1552 +)))
1383 1383  
1384 -**Note:**
1554 +(((
1555 +(% style="color:red" %)**Note:**
1556 +)))
1385 1385  
1386 -1. Make sure the device is set to ABP mode in the IoT Server.
1387 -1. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
1388 -1. Make sure SF / bandwidth setting in LG01/LG02 match the settings of AT+DR. refer [[this link>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_Gateway/&file=LoRaWAN%201.0.3%20Regional%20Parameters.xlsx]] to see what DR means.
1389 -1. The command AT+RX2FQ and AT+RX2DR is to let downlink work. to set the correct parameters, user can check the actually downlink parameters to be used. As below. Which shows the RX2FQ should use 868400000 and RX2DR should be 5
1558 +(((
1559 +(% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server.
1560 +2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
1561 +3. Make sure SF / bandwidth setting in LG01/LG02 match the settings of AT+DR. refer [[this link>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_Gateway/&file=LoRaWAN%201.0.3%20Regional%20Parameters.xlsx]] to see what DR means.
1562 +4. The command AT+RX2FQ and AT+RX2DR is to let downlink work. to set the correct parameters, user can check the actually downlink parameters to be used. As below. Which shows the RX2FQ should use 868400000 and RX2DR should be 5
1563 +)))
1390 1390  
1391 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image031.png]]
1565 +(((
1566 +[[image:1653359097980-169.png||height="188" width="729"]]
1567 +)))
1392 1392  
1569 +(((
1570 +
1571 +)))
1393 1393  
1394 -1.
1395 -11.
1396 -111. Change to Class A
1573 +=== 4.2.3 Change to Class A ===
1397 1397  
1398 1398  If sensor JOINED
1399 -
1400 -AT+CLASS=A
1401 -
1576 +(% style="background-color:#dcdcdc" %)AT+CLASS=A
1402 1402  ATZ
1403 1403  
1579 += 5. FAQ =
1404 1404  
1581 +== 5.1 How to upgrade the image? ==
1405 1405  
1406 -
1407 -
1408 -1. FAQ
1409 -
1410 -1.
1411 -11. How to upgrade the image?
1412 -
1413 1413  The LT LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to LT to:
1414 1414  
1415 1415  * Support new features
1416 1416  * For bug fix
1417 1417  * Change LoRaWAN bands.
1418 -
1419 1419  Below shows the hardware connection for how to upload an image to the LT:
1589 +* [[image:1653359603330-121.png]]
1420 1420  
1421 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image029.png]]
1422 -
1423 -
1424 1424  **Step1:** Download [[flash loader>>url:https://www.st.com/content/st_com/en/products/development-tools/software-development-tools/stm32-software-development-tools/stm32-programmers/flasher-stm32.html]].
1425 -
1426 1426  **Step2**: Download the [[LT Image files>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]].
1427 -
1428 1428  **Step3: **Open flashloader; choose the correct COM port to update.
1594 +**For LT-22222-L**:
1595 +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.
1429 1429  
1430 -**For LT-33222-L**:
1597 + [[image:image-20220524103407-12.png]]
1431 1431  
1432 -Hold down the PRO button and then momentarily press the RST reset button and the **DO2 led** will change from OFF to ON. When **DO2 LED** is on, it means the device is in download mode.
1599 +[[image:image-20220524103429-13.png]]
1433 1433  
1434 -**For LT-22222-L**:
1601 +[[image:image-20220524104033-15.png]]
1435 1435  
1436 -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.
1603 +(% 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:
1437 1437  
1605 +[[image:1653360054704-518.png||height="186" width="745"]]
1438 1438  
1607 +(((
1608 +(((
1609 +== 5.2 How to change the LoRa Frequency Bands/Region? ==
1610 +)))
1611 +)))
1439 1439  
1440 -|(((
1441 -Board detected
1613 +(((
1614 +User can follow the introduction for [[how to upgrade image>>path:http://8.211.40.43:8080/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/#H5.1Howtoupgradetheimage3F]]. When download the images, choose the required image file for download.
1442 1442  )))
1443 1443  
1444 -|(((
1445 -
1617 +(((
1618 +== 5.3 How to set up LT to work with Single Channel Gateway such as LG01/LG02? ==
1446 1446  )))
1447 1447  
1448 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image032.png]] [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image033.png]]
1449 -
1450 -
1451 -
1452 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image034.png]] [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image035.png]]
1453 -
1454 -
1455 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image036.png]] [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image037.png]]
1456 -
1457 -
1458 -**Notice**: In case user has lost the program cable. User can hand made one from a 3.5mm cable. The pin mapping is:
1459 -
1460 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image038.png]]
1461 -
1462 -
1463 -1.
1464 -11. How to change the LoRa Frequency Bands/Region?
1465 -
1466 -User can follow the introduction for [[how to upgrade image>>path:#upgrade_image]]. When download the images, choose the required image file for download.
1467 -
1468 -
1469 -1.
1470 -11. How to set up LT to work with Single Channel Gateway such as LG01/LG02?
1471 -
1621 +(((
1622 +(((
1472 1472  In this case, users need to set LT-33222-L to work in ABP mode & transmit in only one frequency.
1624 +)))
1625 +)))
1473 1473  
1627 +(((
1628 +(((
1474 1474  Assume we have a LG02 working in the frequency 868400000 now , below is the step.
1630 +)))
1631 +)))
1475 1475  
1633 +(((
1634 +(% 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.
1635 +)))
1476 1476  
1477 -**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.
1637 +(((
1638 +[[image:1653360231087-571.png||height="401" width="727"]]
1639 +)))
1478 1478  
1479 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image039.png]]
1641 +(% 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.
1480 1480  
1481 -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.
1643 +(% style="color:#4f81bd" %)**Step2**(%%)**: **Run AT Command to make LT work in Single frequency & ABP mode. Below is the AT commands:
1482 1482  
1645 +(% style="background-color:#dcdcdc" %)123456 (%%) Enter Password to have AT access.
1646 +(% style="background-color:#dcdcdc" %)AT+FDR  (%%) Reset Parameters to Factory Default, Keys Reserve
1647 +(% style="background-color:#dcdcdc" %)123456  (%%) Enter Password to have AT access.
1648 +(% style="background-color:#dcdcdc" %)AT+NJM=0 (%%)Set to ABP mode
1649 +(% style="background-color:#dcdcdc" %)AT+ADR=0 (%%)Set the Adaptive Data Rate Off
1650 +(% style="background-color:#dcdcdc" %)AT+DR=5 (%%) Set Data Rate (Set AT+DR=3 for 915 band)
1651 +(% style="background-color:#dcdcdc" %)AT+TDC=60000  (%%)Set transmit interval to 60 seconds
1652 +(% style="background-color:#dcdcdc" %)AT+CHS=868400000 (%%)Set transmit frequency to 868.4Mhz
1653 +(% style="background-color:#dcdcdc" %)AT+DADDR=26 01 1A F1(%%) Set Device Address to 26 01 1A F1
1654 +(% style="background-color:#dcdcdc" %)ATZ                (%%)Reset MCU
1483 1483  
1484 -**Step2: **Run AT Command to make LT work in Single frequency & ABP mode. Below is the AT commands:
1485 -
1486 -123456   Enter Password to have AT access.
1487 -
1488 -AT+FDR   Reset Parameters to Factory Default, Keys Reserve
1489 -
1490 -123456   Enter Password to have AT access.
1491 -
1492 -AT+NJM=0 Set to ABP mode
1493 -
1494 -AT+ADR=0 Set the Adaptive Data Rate Off
1495 -
1496 -AT+DR=5  Set Data Rate (Set AT+DR=3 for 915 band)
1497 -
1498 -AT+TDC=60000  Set transmit interval to 60 seconds
1499 -
1500 -AT+CHS=868400000 Set transmit frequency to 868.4Mhz
1501 -
1502 -AT+DADDR=26 01 1A F1 Set Device Address to 26 01 1A F1
1503 -
1504 -ATZ                Reset MCU
1505 -
1506 1506  As shown in below:
1507 1507  
1508 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image040.png]]
1658 +[[image:1653360498588-932.png||height="485" width="726"]]
1509 1509  
1660 +== 5.4 Can I see counting event in Serial? ==
1510 1510  
1511 -
1512 -1.
1513 -11. Can I see counting event in Serial?
1514 -
1662 +(((
1515 1515  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.
1664 +)))
1516 1516  
1666 +(((
1667 += 6. Trouble Shooting =
1668 +)))
1517 1517  
1670 +(((
1671 +(((
1672 +== 6.1 Downlink doesn’t work, how to solve it? ==
1673 +)))
1674 +)))
1518 1518  
1519 -
1520 -1. Trouble Shooting     
1521 -11. Downlink doesn’t work, how to solve it?
1522 -
1676 +(((
1523 1523  Please see this link for how to debug:
1524 1524  
1679 +[[http:~~/~~/8.211.40.43:8080/xwiki/bin/view/Main/LoRaWAN%20Communication%20Debug/>>http://8.211.40.43:8080/xwiki/bin/view/Main/LoRaWAN%20Communication%20Debug/]]
1680 +)))
1681 +
1682 +(((
1525 1525  [[http:~~/~~/wiki.dragino.com/index.php?title=LoRaWAN_Communication_Debug#How_it_work>>url:http://wiki.dragino.com/index.php?title=LoRaWAN_Communication_Debug#How_it_work]]
1684 +)))
1526 1526  
1686 +(((
1687 +== 6.2 Have trouble to upload image. ==
1688 +)))
1527 1527  
1528 -1.
1529 -11. Have trouble to upload image.
1530 -
1690 +(((
1531 1531  See this link for trouble shooting:
1692 +)))
1532 1532  
1694 +(((
1533 1533  [[http:~~/~~/wiki.dragino.com/index.php?title=Firmware_Upgrade_Trouble_Shooting#UART_upgrade_trouble_shooting>>url:http://wiki.dragino.com/index.php?title=Firmware_Upgrade_Trouble_Shooting#UART_upgrade_trouble_shooting]]
1696 +)))
1534 1534  
1698 +(((
1699 +== 6.3 Why I can’t join TTN in US915 /AU915 bands? ==
1700 +)))
1535 1535  
1536 -1.
1537 -11. Why I can’t join TTN in US915 /AU915 bands?
1538 -
1702 +(((
1539 1539  It might be about the channels mapping. Please see this link for detail:
1704 +)))
1540 1540  
1706 +(((
1541 1541  [[http:~~/~~/wiki.dragino.com/index.php?title=LoRaWAN_Communication_Debug#Notice_of_US915.2FCN470.2FAU915_Frequency_band>>url:http://wiki.dragino.com/index.php?title=LoRaWAN_Communication_Debug#Notice_of_US915.2FCN470.2FAU915_Frequency_band]]
1708 +)))
1542 1542  
1710 +(((
1711 += 7. Order Info =
1712 +)))
1543 1543  
1714 +(((
1715 +(((
1716 +(% style="color:#4f81bd" %)**LT-22222-L-XXX:**
1717 +)))
1718 +)))
1544 1544  
1720 +(((
1721 +(((
1722 +(% style="color:#4f81bd" %)**XXX:**
1723 +)))
1724 +)))
1545 1545  
1546 -1. Order Info
1726 +* (((
1727 +(% style="color:#4f81bd" %)**EU433**(%%): LT with frequency bands EU433
1728 +)))
1729 +* (((
1730 +(% style="color:#4f81bd" %)**EU868**(%%): LT with frequency bands EU868
1731 +)))
1732 +* (((
1733 +(% style="color:#4f81bd" %)**KR920**(%%): LT with frequency bands KR920
1734 +)))
1735 +* (((
1736 +(% style="color:#4f81bd" %)**CN470**(%%): LT with frequency bands CN470
1737 +)))
1738 +* (((
1739 +(% style="color:#4f81bd" %)**AS923**(%%): LT with frequency bands AS923
1740 +)))
1741 +* (((
1742 +(% style="color:#4f81bd" %)**AU915**(%%): LT with frequency bands AU915
1743 +)))
1744 +* (((
1745 +(% style="color:#4f81bd" %)**US915**(%%): LT with frequency bands US915
1746 +)))
1747 +* (((
1748 +(% style="color:#4f81bd" %)**IN865**(%%): LT with frequency bands IN865
1749 +)))
1547 1547  
1548 -**For LT-33222-L-XXX or LT-22222-L-XXX:**
1751 +(((
1752 +* (% style="color:#4f81bd" %)**CN779**(%%): LT with frequency bands CN779
1549 1549  
1550 -**XXX:**
1754 += 8. Packing Info =
1755 +)))
1551 1551  
1552 -* **EU433**: LT with frequency bands EU433
1553 -* **EU868**: LT with frequency bands EU868
1554 -* **KR920**: LT with frequency bands KR920
1555 -* **CN470**: LT with frequency bands CN470
1556 -* **AS923**: LT with frequency bands AS923
1557 -* **AU915**: LT with frequency bands AU915
1558 -* **US915**: LT with frequency bands US915
1559 -* **IN865**: LT with frequency bands IN865
1560 -* **CN779**: LT with frequency bands CN779
1561 -
1562 -1. Packing Info
1563 -
1757 +(((
1758 +(((
1564 1564  **Package Includes**:
1760 +)))
1761 +)))
1565 1565  
1566 -* LT I/O Controller x 1
1763 +(((
1764 +(((
1765 +* LT-22222-L I/O Controller x 1
1567 1567  * Stick Antenna for LoRa RF part x 1
1568 1568  * Bracket for controller x1
1569 1569  * Program cable x 1
1769 +)))
1770 +)))
1570 1570  
1772 +(((
1773 +(((
1571 1571  **Dimension and weight**:
1775 +)))
1776 +)))
1572 1572  
1778 +(((
1779 +(((
1573 1573  * Device Size: 13.5 x 7 x 3 cm
1574 1574  * Device Weight: 105g
1575 1575  * Package Size / pcs : 14.5 x 8 x 5 cm
1576 1576  * Weight / pcs : 170g
1784 +)))
1785 +)))
1577 1577  
1578 -1. Support
1787 +(((
1788 += 9. Support =
1789 +)))
1579 1579  
1580 -* 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.
1581 -* Provide as much information as possible regarding your enquiry (product models, accurately describe your problem and steps to replicate it etc) and send a mail to
1791 +* (((
1792 +(((
1793 +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.
1794 +)))
1795 +)))
1796 +* (((
1797 +(((
1798 +Provide as much information as possible regarding your enquiry (product models, accurately describe your problem and steps to replicate it etc) and send a mail to
1799 +)))
1800 +)))
1582 1582  
1583 -[[support@dragino.com>>url:file:///D:/市场资料/说明书/LoRa/LT系列/support@dragino.com]]
1802 +(((
1803 +(((
1804 + [[support@dragino.com>>url:file:///D:/市场资料/说明书/LoRa/LT系列/support@dragino.com]]
1805 +)))
1806 +
1807 +(((
1808 += 10. Reference​​​​​ =
1809 +
1810 +* Product Page:
1811 +
1812 +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]]
1813 +
1814 +* [[Image Download>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]]
1815 +* [[AT Command Manual>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/]]
1816 +* [[Hardware Source>>url:https://github.com/dragino/Lora/tree/master/LT/LT-33222-L/v1.0]]
1817 +)))
1818 +)))
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