Last modified by Saxer Lin on 2025/04/15 17:24
<
From version < 45.2 >
edited by Xiaoling
on 2022/05/24 09:53
To version < 58.3 >
edited by Xiaoling
on 2022/05/24 10:32
>
Change comment: There is no comment for this version

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Content
... ... @@ -1100,11 +1100,11 @@
1100 1100  * Connect sensor’s output to DI1-
1101 1101  * Connect sensor’s VCC to DI1+.
1102 1102  
1103 -So when sensor active, the current between NEC2501 pin1 and pin2 is:
1103 +So when sensor active, the current between NEC2501 pin1 and pin2 is： ​​
1104 1104  
1105 - //IF//[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image021.png]] = DI1+ / 1K.
1105 + //IF// = DI1+ / 1K.
1106 1106  
1107 -If DI1+ = 12v, the //IF//[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image022.png]] = 12mA , So the LT-22222-L will be able to detect this active signal.
1107 +If DI1+ = 12v, the //IF// = 12mA , So the LT-22222-L will be able to detect this active signal.
1108 1108  
1109 1109  
1110 1110  **Example2**: Connect to a High active sensor.
... ... @@ -1116,12 +1116,12 @@
1116 1116  
1117 1117  So when sensor active, the current between NEC2501 pin1 and pin2 is:
1118 1118  
1119 - //IF//[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image021.png]] = DI1+ / 1K.
1119 +[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/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:/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 //IF//[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image022.png]] = 24mA , So the LT-22222-L will be able to detect this high active signal.
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:/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:/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 -**Example3**: Connect to a 220v high active sensor.公司测试一下
1124 +**Example3**: Connect to a 220v high active sensor.
1125 1125  
1126 1126  Assume user want to monitor an active signal higher than 220v, to make sure not burn the photocoupler  
1127 1127  
... ... @@ -1130,34 +1130,24 @@
1130 1130  
1131 1131  So when sensor active, the current between NEC2501 pin1 and pin2 is:
1132 1132  
1133 - //IF//[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image021.png]] = DI1+ / 51K.
1133 + [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/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:/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 //IF//[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image022.png]] = 4.3mA , So the LT-22222-L will be able to detect this high active signal safely.
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.
1136 1136  
1137 +=== 3.6.3 Digital Output Port: DO1/DO2 /DO3 ===
1137 1137  
1138 -1.
1139 -11.
1140 -111. Digital Output Port: DO1/DO2 /DO3
1141 -
1142 1142  NPN output: GND or Float. Max voltage can apply to output pin is 36v.
1143 1143  
1144 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image023.png]]
1141 +[[image:1653357531600-905.png]]
1145 1145  
1143 +=== 3.6.4 Analog Input Interface ===
1146 1146  
1147 -
1148 -
1149 -1.
1150 -11.
1151 -111. Analog Input Interface
1152 -
1153 1153  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:
1154 1154  
1155 -AC2 = (IN2 voltage )/12
1147 +**AC2 = (IN2 voltage )/12**
1156 1156  
1157 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image024.png]]
1149 +[[image:1653357592296-182.png]]
1158 1158  
1159 -
1160 -
1161 1161  Example to connect a 4~~20mA sensor
1162 1162  
1163 1163  We take the wind speed sensor as an example for reference only.
... ... @@ -1173,423 +1173,653 @@
1173 1173  
1174 1174  Connection diagram:
1175 1175  
1176 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image025.jpg]]
1166 +[[image:1653357640609-758.png]]
1177 1177  
1178 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image026.png]]
1168 +[[image:1653357648330-671.png||height="155" width="733"]]
1179 1179  
1170 +=== 3.6.5 Relay Output ===
1180 1180  
1181 -
1182 -1.
1183 -11.
1184 -111. Relay Output
1185 -
1172 +(((
1186 1186  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:
1174 +)))
1187 1187  
1188 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image027.png]]
1176 +[[image:image-20220524100215-9.png]]
1189 1189  
1178 +[[image:image-20220524100215-10.png||height="382" width="723"]]
1190 1190  
1191 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image028.png]]
1180 +== 3.7 LEDs Indicators ==
1192 1192  
1182 +[[image:image-20220524100748-11.png]]
1193 1193  
1184 += 4. Use AT Command =
1194 1194  
1186 +== 4.1 Access AT Command ==
1195 1195  
1196 -
1197 -1.
1198 -11. LEDs Indicators
1199 -
1200 -(% border="1" style="background-color:#f7faff" %)
1201 -|**LEDs**|**Feature**
1202 -|**PWR**|Always on if there is power
1203 -|**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.
1204 -|**TX**|(((
1205 -Device boot: TX blinks 5 times.
1206 -
1207 -Successful join network: TX ON for 5 seconds.
1208 -
1209 -Transmit a LoRa packet: TX blinks once
1210 -)))
1211 -|**RX**|RX blinks once when receive a packet.
1212 -|**DO1**|
1213 -|**DO2**|
1214 -|**DO3**|
1215 -|**DI2**|(((
1216 -For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1217 -
1218 -For LT-33222-L: ON when DI2 is low, LOW when DI2 is high
1219 -)))
1220 -|**DI2**|(((
1221 -For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1222 -
1223 -For LT-33222-L: ON when DI2 is low, LOW when DI2 is high
1224 -)))
1225 -|**DI3**|For LT-33222-L ONLY: ON when DI3 is low, LOW when DI3 is high
1226 -|**DI2**|(((
1227 -For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1228 -
1229 -For LT-33222-L: ON when DI2 is low, LOW when DI2 is high
1230 -)))
1231 -|**RO1**|
1232 -|**RO2**|
1233 -
1234 -1. Use AT Command
1235 -11. Access AT Command
1236 -
1237 1237  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.
1238 1238  
1239 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image029.png]]
1190 +[[image:1653358238933-385.png]]
1240 1240  
1192 +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:
1241 1241  
1242 -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:
1194 +[[image:1653358355238-883.png]]
1243 1243  
1244 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image030.png]]
1245 -
1246 -
1247 1247  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/]]
1248 1248  
1198 +(((
1249 1249  AT+<CMD>?        : Help on <CMD>
1200 +)))
1250 1250  
1202 +(((
1251 1251  AT+<CMD>         : Run <CMD>
1204 +)))
1252 1252  
1206 +(((
1253 1253  AT+<CMD>=<value> : Set the value
1208 +)))
1254 1254  
1210 +(((
1255 1255  AT+<CMD>=?       : Get the value
1212 +)))
1256 1256  
1214 +(((
1257 1257  ATZ: Trig a reset of the MCU
1216 +)))
1258 1258  
1218 +(((
1259 1259  AT+FDR: Reset Parameters to Factory Default, Keys Reserve 
1220 +)))
1260 1260  
1222 +(((
1261 1261  AT+DEUI: Get or Set the Device EUI
1224 +)))
1262 1262  
1226 +(((
1263 1263  AT+DADDR: Get or Set the Device Address
1228 +)))
1264 1264  
1230 +(((
1265 1265  AT+APPKEY: Get or Set the Application Key
1232 +)))
1266 1266  
1234 +(((
1267 1267  AT+NWKSKEY: Get or Set the Network Session Key
1236 +)))
1268 1268  
1238 +(((
1269 1269  AT+APPSKEY: Get or Set the Application Session Key
1240 +)))
1270 1270  
1242 +(((
1271 1271  AT+APPEUI: Get or Set the Application EUI
1244 +)))
1272 1272  
1246 +(((
1273 1273  AT+ADR: Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1248 +)))
1274 1274  
1250 +(((
1275 1275  AT+TXP: Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1252 +)))
1276 1276  
1254 +(((
1277 1277  AT+DR: Get or Set the Data Rate. (0-7 corresponding to DR_X)  
1256 +)))
1278 1278  
1258 +(((
1279 1279  AT+DCS: Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1260 +)))
1280 1280  
1262 +(((
1281 1281  AT+PNM: Get or Set the public network mode. (0: off, 1: on)
1264 +)))
1282 1282  
1266 +(((
1283 1283  AT+RX2FQ: Get or Set the Rx2 window frequency
1268 +)))
1284 1284  
1270 +(((
1285 1285  AT+RX2DR: Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1272 +)))
1286 1286  
1274 +(((
1287 1287  AT+RX1DL: Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1276 +)))
1288 1288  
1278 +(((
1289 1289  AT+RX2DL: Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1280 +)))
1290 1290  
1282 +(((
1291 1291  AT+JN1DL: Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1284 +)))
1292 1292  
1286 +(((
1293 1293  AT+JN2DL: Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1288 +)))
1294 1294  
1290 +(((
1295 1295  AT+NJM: Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1292 +)))
1296 1296  
1294 +(((
1297 1297  AT+NWKID: Get or Set the Network ID
1296 +)))
1298 1298  
1298 +(((
1299 1299  AT+FCU: Get or Set the Frame Counter Uplink
1300 +)))
1300 1300  
1302 +(((
1301 1301  AT+FCD: Get or Set the Frame Counter Downlink
1304 +)))
1302 1302  
1306 +(((
1303 1303  AT+CLASS: Get or Set the Device Class
1308 +)))
1304 1304  
1310 +(((
1305 1305  AT+JOIN: Join network
1312 +)))
1306 1306  
1314 +(((
1307 1307  AT+NJS: Get OTAA Join Status
1316 +)))
1308 1308  
1318 +(((
1309 1309  AT+SENDB: Send hexadecimal data along with the application port
1320 +)))
1310 1310  
1322 +(((
1311 1311  AT+SEND: Send text data along with the application port
1324 +)))
1312 1312  
1326 +(((
1313 1313  AT+RECVB: Print last received data in binary format (with hexadecimal values)
1328 +)))
1314 1314  
1330 +(((
1315 1315  AT+RECV: Print last received data in raw format
1332 +)))
1316 1316  
1334 +(((
1317 1317  AT+VER: Get current image version and Frequency Band
1336 +)))
1318 1318  
1338 +(((
1319 1319  AT+CFM: Get or Set the confirmation mode (0-1)
1340 +)))
1320 1320  
1342 +(((
1321 1321  AT+CFS: Get confirmation status of the last AT+SEND (0-1)
1344 +)))
1322 1322  
1346 +(((
1323 1323  AT+SNR: Get the SNR of the last received packet
1348 +)))
1324 1324  
1350 +(((
1325 1325  AT+RSSI: Get the RSSI of the last received packet
1352 +)))
1326 1326  
1354 +(((
1327 1327  AT+TDC: Get or set the application data transmission interval in ms
1356 +)))
1328 1328  
1358 +(((
1329 1329  AT+PORT: Get or set the application port
1360 +)))
1330 1330  
1362 +(((
1331 1331  AT+DISAT: Disable AT commands
1364 +)))
1332 1332  
1366 +(((
1333 1333  AT+PWORD: Set password, max 9 digits
1368 +)))
1334 1334  
1370 +(((
1335 1335  AT+CHS: Get or Set Frequency (Unit: Hz) for Single Channel Mode
1372 +)))
1336 1336  
1374 +(((
1337 1337  AT+CHE: Get or Set eight channels mode, Only for US915, AU915, CN470
1376 +)))
1338 1338  
1378 +(((
1339 1339  AT+CFG: Print all settings
1380 +)))
1340 1340  
1382 +== 4.2 Common AT Command Sequence ==
1341 1341  
1384 +=== 4.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
1342 1342  
1343 -1.
1344 -11. Common AT Command Sequence
1345 -111. Multi-channel ABP mode (Use with SX1301/LG308)
1346 -
1386 +(((
1347 1347  If device has not joined network yet:
1388 +)))
1348 1348  
1349 -123456
1390 +(((
1391 +(% style="background-color:#dcdcdc" %)123456
1392 +)))
1350 1350  
1351 -AT+FDR
1394 +(((
1395 +(% style="background-color:#dcdcdc" %)AT+FDR
1396 +)))
1352 1352  
1353 -123456
1398 +(((
1399 +(% style="background-color:#dcdcdc" %)123456
1400 +)))
1354 1354  
1355 -AT+NJM=0
1402 +(((
1403 +(% style="background-color:#dcdcdc" %)AT+NJM=0
1404 +)))
1356 1356  
1357 -ATZ
1406 +(((
1407 +(% style="background-color:#dcdcdc" %)ATZ
1408 +)))
1358 1358  
1359 1359  
1411 +(((
1360 1360  If device already joined network:
1413 +)))
1361 1361  
1362 -AT+NJM=0
1415 +(((
1416 +(% style="background-color:#dcdcdc" %)AT+NJM=0
1417 +)))
1363 1363  
1364 -ATZ
1419 +(((
1420 +(% style="background-color:#dcdcdc" %)ATZ
1421 +)))
1365 1365  
1366 -1.
1367 -11.
1368 -111. Single-channel ABP mode (Use with LG01/LG02)
1423 +=== 4.2.2 Single-channel ABP mode (Use with LG01/LG02) ===
1369 1369  
1370 -123456   Enter Password to have AT access.
1425 +(((
1426 +(% style="background-color:#dcdcdc" %) 123456(%%)   Enter Password to have AT access.
1427 +)))
1371 1371  
1372 -AT+FDR   Reset Parameters to Factory Default, Keys Reserve
1429 +(((
1430 +(% style="background-color:#dcdcdc" %) AT+FDR(%%)   Reset Parameters to Factory Default, Keys Reserve
1431 +)))
1373 1373  
1374 -123456   Enter Password to have AT access.
1433 +(((
1434 +(% style="background-color:#dcdcdc" %) 123456(%%)   Enter Password to have AT access.
1435 +)))
1375 1375  
1376 -AT+CLASS=C Set to work in CLASS C
1437 +(((
1438 +(% style="background-color:#dcdcdc" %) AT+CLASS=C(%%) Set to work in CLASS C
1439 +)))
1377 1377  
1378 -AT+NJM=0 Set to ABP mode
1441 +(((
1442 +(% style="background-color:#dcdcdc" %) AT+NJM=0(%%) Set to ABP mode
1443 +)))
1379 1379  
1380 -AT+ADR=0 Set the Adaptive Data Rate Off
1445 +(((
1446 +(% style="background-color:#dcdcdc" %) AT+ADR=0(%%) Set the Adaptive Data Rate Off
1447 +)))
1381 1381  
1382 -AT+DR=5  Set Data Rate
1449 +(((
1450 +(% style="background-color:#dcdcdc" %) AT+DR=5(%%)  Set Data Rate
1451 +)))
1383 1383  
1384 -AT+TDC=60000  Set transmit interval to 60 seconds
1453 +(((
1454 +(% style="background-color:#dcdcdc" %) AT+TDC=60000(%%)  Set transmit interval to 60 seconds
1455 +)))
1385 1385  
1386 -AT+CHS=868400000 Set transmit frequency to 868.4Mhz
1457 +(((
1458 +(% style="background-color:#dcdcdc" %) AT+CHS=868400000(%%) Set transmit frequency to 868.4Mhz
1459 +)))
1387 1387  
1388 -AT+RX2FQ=868400000 Set RX2Frequency to 868.4Mhz (according to the result from server)
1461 +(((
1462 +(% style="background-color:#dcdcdc" %) AT+RX2FQ=868400000(%%) Set RX2Frequency to 868.4Mhz (according to the result from server)
1463 +)))
1389 1389  
1390 -AT+RX2DR=5  Set RX2DR to match the downlink DR from server. see below
1465 +(((
1466 +(% style="background-color:#dcdcdc" %) AT+RX2DR=5(%%)  Set RX2DR to match the downlink DR from server. see below
1467 +)))
1391 1391  
1392 -AT+DADDR=26 01 1A F1 Set Device Address to 26 01 1A F1, this ID can be found in the LoRa Server portal.
1469 +(((
1470 +(% 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.
1471 +)))
1393 1393  
1394 -ATZ          Reset MCU
1473 +(((
1474 +(% style="background-color:#dcdcdc" %) ATZ         (%%) Reset MCU
1475 +)))
1395 1395  
1396 -**Note:**
1477 +(((
1478 +(% style="color:red" %)**Note:**
1479 +)))
1397 1397  
1398 -1. Make sure the device is set to ABP mode in the IoT Server.
1399 -1. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
1400 -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.
1401 -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
1481 +(((
1482 +(% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server.
1483 +2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
1484 +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.
1485 +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
1486 +)))
1402 1402  
1403 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image031.png]]
1488 +(((
1489 +[[image:1653359097980-169.png||height="188" width="729"]]
1490 +)))
1404 1404  
1492 +(((
1493 +
1494 +)))
1405 1405  
1406 -1.
1407 -11.
1408 -111. Change to Class A
1496 +=== 4.2.3 Change to Class A ===
1409 1409  
1410 1410  If sensor JOINED
1411 -
1412 -AT+CLASS=A
1413 -
1499 +(% style="background-color:#dcdcdc" %)AT+CLASS=A
1414 1414  ATZ
1415 1415  
1416 -
1417 -
1418 -
1419 -
1420 -1. FAQ
1421 -
1422 -1.
1423 -11. How to upgrade the image?
1424 -
1502 += 5. FAQ =
1503 +== 5.1 How to upgrade the image? ==
1425 1425  The LT LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to LT to:
1426 1426  
1506 +
1427 1427  * Support new features
1428 1428  * For bug fix
1429 1429  * Change LoRaWAN bands.
1430 -
1431 1431  Below shows the hardware connection for how to upload an image to the LT:
1432 1432  
1433 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image029.png]]
1434 -
1435 -
1436 1436  **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]].
1437 -
1438 1438  **Step2**: Download the [[LT Image files>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]].
1439 -
1440 1440  **Step3: **Open flashloader; choose the correct COM port to update.
1441 -
1442 -**For LT-33222-L**:
1443 -
1444 -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.
1445 -
1446 1446  **For LT-22222-L**:
1447 -
1448 1448  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.
1449 1449  
1518 +[[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]]
1450 1450  
1520 +(% 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:
1451 1451  
1452 -|(((
1453 -Board detected
1454 -)))
1455 1455  
1456 -|(((
1523 +1. (((
1524 +(((
1457 1457  
1458 1458  )))
1459 1459  
1460 -[[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]]
1528 +1. (((
1529 +How to change the LoRa Frequency Bands/Region?
1530 +)))
1531 +)))
1461 1461  
1462 -
1463 -
1464 -[[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]]
1465 -
1466 -
1467 -[[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]]
1468 -
1469 -
1470 -**Notice**: In case user has lost the program cable. User can hand made one from a 3.5mm cable. The pin mapping is:
1471 -
1472 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image038.png]]
1473 -
1474 -
1475 -1.
1476 -11. How to change the LoRa Frequency Bands/Region?
1477 -
1533 +(((
1478 1478  User can follow the introduction for [[how to upgrade image>>path:#upgrade_image]]. When download the images, choose the required image file for download.
1535 +)))
1479 1479  
1537 +(((
1538 +
1539 +)))
1480 1480  
1481 1481  1.
1482 -11. How to set up LT to work with Single Channel Gateway such as LG01/LG02?
1542 +11. (((
1543 +How to set up LT to work with Single Channel Gateway such as LG01/LG02?
1544 +)))
1483 1483  
1546 +(((
1484 1484  In this case, users need to set LT-33222-L to work in ABP mode & transmit in only one frequency.
1548 +)))
1485 1485  
1550 +(((
1486 1486  Assume we have a LG02 working in the frequency 868400000 now , below is the step.
1552 +)))
1487 1487  
1554 +(((
1555 +
1556 +)))
1488 1488  
1558 +(((
1489 1489  **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.
1560 +)))
1490 1490  
1562 +(((
1491 1491  [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image039.png]]
1564 +)))
1492 1492  
1566 +(((
1493 1493  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.
1568 +)))
1494 1494  
1570 +(((
1571 +
1572 +)))
1495 1495  
1574 +(((
1496 1496  **Step2: **Run AT Command to make LT work in Single frequency & ABP mode. Below is the AT commands:
1576 +)))
1497 1497  
1578 +(((
1498 1498  123456   Enter Password to have AT access.
1580 +)))
1499 1499  
1582 +(((
1500 1500  AT+FDR   Reset Parameters to Factory Default, Keys Reserve
1584 +)))
1501 1501  
1586 +(((
1502 1502  123456   Enter Password to have AT access.
1588 +)))
1503 1503  
1590 +(((
1504 1504  AT+NJM=0 Set to ABP mode
1592 +)))
1505 1505  
1594 +(((
1506 1506  AT+ADR=0 Set the Adaptive Data Rate Off
1596 +)))
1507 1507  
1598 +(((
1508 1508  AT+DR=5  Set Data Rate (Set AT+DR=3 for 915 band)
1600 +)))
1509 1509  
1602 +(((
1510 1510  AT+TDC=60000  Set transmit interval to 60 seconds
1604 +)))
1511 1511  
1606 +(((
1512 1512  AT+CHS=868400000 Set transmit frequency to 868.4Mhz
1608 +)))
1513 1513  
1610 +(((
1514 1514  AT+DADDR=26 01 1A F1 Set Device Address to 26 01 1A F1
1612 +)))
1515 1515  
1614 +(((
1516 1516  ATZ                Reset MCU
1616 +)))
1517 1517  
1618 +(((
1518 1518  As shown in below:
1620 +)))
1519 1519  
1622 +(((
1520 1520  [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image040.png]]
1624 +)))
1521 1521  
1626 +(((
1627 +
1628 +)))
1522 1522  
1630 +(((
1631 +
1632 +)))
1523 1523  
1524 -1.
1525 -11. Can I see counting event in Serial?
1634 +1. (((
1635 +(((
1636 +
1637 +)))
1526 1526  
1639 +1. (((
1640 +Can I see counting event in Serial?
1641 +)))
1642 +)))
1643 +
1644 +(((
1527 1527  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.
1646 +)))
1528 1528  
1648 +(((
1649 +
1650 +)))
1529 1529  
1652 +(((
1653 +
1654 +)))
1530 1530  
1656 +(((
1657 +
1658 +)))
1531 1531  
1532 -1. Trouble Shooting     
1533 -11. Downlink doesn’t work, how to solve it?
1660 +1. (((
1661 +(((
1662 +Trouble Shooting    
1663 +)))
1534 1534  
1665 +1. (((
1666 +Downlink doesn’t work, how to solve it?
1667 +)))
1668 +)))
1669 +
1670 +(((
1535 1535  Please see this link for how to debug:
1672 +)))
1536 1536  
1674 +(((
1537 1537  [[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]]
1676 +)))
1538 1538  
1678 +(((
1679 +
1680 +)))
1539 1539  
1540 1540  1.
1541 -11. Have trouble to upload image.
1683 +11. (((
1684 +Have trouble to upload image.
1685 +)))
1542 1542  
1687 +(((
1543 1543  See this link for trouble shooting:
1689 +)))
1544 1544  
1691 +(((
1545 1545  [[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]]
1693 +)))
1546 1546  
1695 +(((
1696 +
1697 +)))
1547 1547  
1548 1548  1.
1549 -11. Why I can’t join TTN in US915 /AU915 bands?
1700 +11. (((
1701 +Why I can’t join TTN in US915 /AU915 bands?
1702 +)))
1550 1550  
1704 +(((
1551 1551  It might be about the channels mapping. Please see this link for detail:
1706 +)))
1552 1552  
1708 +(((
1553 1553  [[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]]
1710 +)))
1554 1554  
1712 +(((
1713 +
1714 +)))
1555 1555  
1716 +(((
1717 +
1718 +)))
1556 1556  
1720 +(((
1721 +
1722 +)))
1557 1557  
1558 -1. Order Info
1724 +1. (((
1725 +Order Info
1726 +)))
1559 1559  
1728 +(((
1560 1560  **For LT-33222-L-XXX or LT-22222-L-XXX:**
1730 +)))
1561 1561  
1732 +(((
1562 1562  **XXX:**
1734 +)))
1563 1563  
1564 -* **EU433**: LT with frequency bands EU433
1565 -* **EU868**: LT with frequency bands EU868
1566 -* **KR920**: LT with frequency bands KR920
1567 -* **CN470**: LT with frequency bands CN470
1568 -* **AS923**: LT with frequency bands AS923
1569 -* **AU915**: LT with frequency bands AU915
1570 -* **US915**: LT with frequency bands US915
1571 -* **IN865**: LT with frequency bands IN865
1572 -* **CN779**: LT with frequency bands CN779
1736 +* (((
1737 +**EU433**: LT with frequency bands EU433
1738 +)))
1739 +* (((
1740 +**EU868**: LT with frequency bands EU868
1741 +)))
1742 +* (((
1743 +**KR920**: LT with frequency bands KR920
1744 +)))
1745 +* (((
1746 +**CN470**: LT with frequency bands CN470
1747 +)))
1748 +* (((
1749 +**AS923**: LT with frequency bands AS923
1750 +)))
1751 +* (((
1752 +**AU915**: LT with frequency bands AU915
1753 +)))
1754 +* (((
1755 +**US915**: LT with frequency bands US915
1756 +)))
1757 +* (((
1758 +**IN865**: LT with frequency bands IN865
1759 +)))
1760 +* (((
1761 +**CN779**: LT with frequency bands CN779
1762 +)))
1573 1573  
1574 -1. Packing Info
1764 +1. (((
1765 +Packing Info
1766 +)))
1575 1575  
1768 +(((
1576 1576  **Package Includes**:
1770 +)))
1577 1577  
1578 -* LT I/O Controller x 1
1579 -* Stick Antenna for LoRa RF part x 1
1580 -* Bracket for controller x1
1581 -* Program cable x 1
1772 +* (((
1773 +LT I/O Controller x 1
1774 +)))
1775 +* (((
1776 +Stick Antenna for LoRa RF part x 1
1777 +)))
1778 +* (((
1779 +Bracket for controller x1
1780 +)))
1781 +* (((
1782 +Program cable x 1
1783 +)))
1582 1582  
1785 +(((
1583 1583  **Dimension and weight**:
1787 +)))
1584 1584  
1585 -* Device Size: 13.5 x 7 x 3 cm
1586 -* Device Weight: 105g
1587 -* Package Size / pcs : 14.5 x 8 x 5 cm
1588 -* Weight / pcs : 170g
1789 +* (((
1790 +Device Size: 13.5 x 7 x 3 cm
1791 +)))
1792 +* (((
1793 +Device Weight: 105g
1794 +)))
1795 +* (((
1796 +Package Size / pcs : 14.5 x 8 x 5 cm
1797 +)))
1798 +* (((
1799 +Weight / pcs : 170g
1800 +)))
1589 1589  
1590 -1. Support
1802 +1. (((
1803 +Support
1804 +)))
1591 1591  
1592 -* 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.
1593 -* 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
1806 +* (((
1807 +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.
1808 +)))
1809 +* (((
1810 +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
1811 +)))
1594 1594  
1813 +(((
1595 1595  [[support@dragino.com>>url:file:///D:/市场资料/说明书/LoRa/LT系列/support@dragino.com]]
1815 +)))
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