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Last modified by Mengting Qiu on 2025/06/04 18:42
From version 52.2
edited by Xiaoling
on 2022/05/24 10:01
Change comment: There is no comment for this version
To version 57.2
edited by Xiaoling
on 2022/05/24 10:14
Change comment: There is no comment for this version

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... ... @@ -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.**
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: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.
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: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.**
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: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.
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 1137  === 3.6.3 Digital Output Port: DO1/DO2 /DO3 ===
1138 1138  
... ... @@ -1167,170 +1167,221 @@
1167 1167  
1168 1168  [[image:1653357648330-671.png||height="155" width="733"]]
1169 1169  
1170 +=== 3.6.5 Relay Output ===
1170 1170  
1171 -
1172 -1.
1173 -11.
1174 -111. Relay Output
1175 -
1172 +(((
1176 1176  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 +)))
1177 1177  
1178 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image027.png]]
1176 +[[image:image-20220524100215-9.png]]
1179 1179  
1178 +[[image:image-20220524100215-10.png||height="382" width="723"]]
1180 1180  
1181 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image028.png]]
1180 +== 3.7 LEDs Indicators ==
1182 1182  
1182 +[[image:image-20220524100748-11.png]]
1183 1183  
1184 += 4. Use AT Command =
1184 1184  
1186 +== 4.1 Access AT Command ==
1185 1185  
1186 -
1187 -1.
1188 -11. LEDs Indicators
1189 -
1190 -(% border="1" style="background-color:#f7faff" %)
1191 -|**LEDs**|**Feature**
1192 -|**PWR**|Always on if there is power
1193 -|**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.
1194 -|**TX**|(((
1195 -Device boot: TX blinks 5 times.
1196 -
1197 -Successful join network: TX ON for 5 seconds.
1198 -
1199 -Transmit a LoRa packet: TX blinks once
1200 -)))
1201 -|**RX**|RX blinks once when receive a packet.
1202 -|**DO1**|
1203 -|**DO2**|
1204 -|**DO3**|
1205 -|**DI2**|(((
1206 -For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1207 -
1208 -For LT-33222-L: ON when DI2 is low, LOW when DI2 is high
1209 -)))
1210 -|**DI2**|(((
1211 -For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1212 -
1213 -For LT-33222-L: ON when DI2 is low, LOW when DI2 is high
1214 -)))
1215 -|**DI3**|For LT-33222-L ONLY: ON when DI3 is low, LOW when DI3 is high
1216 -|**DI2**|(((
1217 -For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1218 -
1219 -For LT-33222-L: ON when DI2 is low, LOW when DI2 is high
1220 -)))
1221 -|**RO1**|
1222 -|**RO2**|
1223 -
1224 -1. Use AT Command
1225 -11. Access AT Command
1226 -
1227 1227  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.
1228 1228  
1229 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image029.png]]
1190 +[[image:1653358238933-385.png]]
1230 1230  
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:
1231 1231  
1232 -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]]
1233 1233  
1234 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image030.png]]
1235 -
1236 -
1237 1237  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/]]
1238 1238  
1198 +(((
1239 1239  AT+<CMD>?        : Help on <CMD>
1200 +)))
1240 1240  
1202 +(((
1241 1241  AT+<CMD>         : Run <CMD>
1204 +)))
1242 1242  
1206 +(((
1243 1243  AT+<CMD>=<value> : Set the value
1208 +)))
1244 1244  
1210 +(((
1245 1245  AT+<CMD>=?       : Get the value
1212 +)))
1246 1246  
1214 +(((
1247 1247  ATZ: Trig a reset of the MCU
1216 +)))
1248 1248  
1218 +(((
1249 1249  AT+FDR: Reset Parameters to Factory Default, Keys Reserve 
1220 +)))
1250 1250  
1222 +(((
1251 1251  AT+DEUI: Get or Set the Device EUI
1224 +)))
1252 1252  
1226 +(((
1253 1253  AT+DADDR: Get or Set the Device Address
1228 +)))
1254 1254  
1230 +(((
1255 1255  AT+APPKEY: Get or Set the Application Key
1232 +)))
1256 1256  
1234 +(((
1257 1257  AT+NWKSKEY: Get or Set the Network Session Key
1236 +)))
1258 1258  
1238 +(((
1259 1259  AT+APPSKEY: Get or Set the Application Session Key
1240 +)))
1260 1260  
1242 +(((
1261 1261  AT+APPEUI: Get or Set the Application EUI
1244 +)))
1262 1262  
1246 +(((
1263 1263  AT+ADR: Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1248 +)))
1264 1264  
1250 +(((
1265 1265  AT+TXP: Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1252 +)))
1266 1266  
1254 +(((
1267 1267  AT+DR: Get or Set the Data Rate. (0-7 corresponding to DR_X)  
1256 +)))
1268 1268  
1258 +(((
1269 1269  AT+DCS: Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1260 +)))
1270 1270  
1262 +(((
1271 1271  AT+PNM: Get or Set the public network mode. (0: off, 1: on)
1264 +)))
1272 1272  
1266 +(((
1273 1273  AT+RX2FQ: Get or Set the Rx2 window frequency
1268 +)))
1274 1274  
1270 +(((
1275 1275  AT+RX2DR: Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1272 +)))
1276 1276  
1274 +(((
1277 1277  AT+RX1DL: Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1276 +)))
1278 1278  
1278 +(((
1279 1279  AT+RX2DL: Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1280 +)))
1280 1280  
1282 +(((
1281 1281  AT+JN1DL: Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1284 +)))
1282 1282  
1286 +(((
1283 1283  AT+JN2DL: Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1288 +)))
1284 1284  
1290 +(((
1285 1285  AT+NJM: Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1292 +)))
1286 1286  
1294 +(((
1287 1287  AT+NWKID: Get or Set the Network ID
1296 +)))
1288 1288  
1298 +(((
1289 1289  AT+FCU: Get or Set the Frame Counter Uplink
1300 +)))
1290 1290  
1302 +(((
1291 1291  AT+FCD: Get or Set the Frame Counter Downlink
1304 +)))
1292 1292  
1306 +(((
1293 1293  AT+CLASS: Get or Set the Device Class
1308 +)))
1294 1294  
1310 +(((
1295 1295  AT+JOIN: Join network
1312 +)))
1296 1296  
1314 +(((
1297 1297  AT+NJS: Get OTAA Join Status
1316 +)))
1298 1298  
1318 +(((
1299 1299  AT+SENDB: Send hexadecimal data along with the application port
1320 +)))
1300 1300  
1322 +(((
1301 1301  AT+SEND: Send text data along with the application port
1324 +)))
1302 1302  
1326 +(((
1303 1303  AT+RECVB: Print last received data in binary format (with hexadecimal values)
1328 +)))
1304 1304  
1330 +(((
1305 1305  AT+RECV: Print last received data in raw format
1332 +)))
1306 1306  
1334 +(((
1307 1307  AT+VER: Get current image version and Frequency Band
1336 +)))
1308 1308  
1338 +(((
1309 1309  AT+CFM: Get or Set the confirmation mode (0-1)
1340 +)))
1310 1310  
1342 +(((
1311 1311  AT+CFS: Get confirmation status of the last AT+SEND (0-1)
1344 +)))
1312 1312  
1346 +(((
1313 1313  AT+SNR: Get the SNR of the last received packet
1348 +)))
1314 1314  
1350 +(((
1315 1315  AT+RSSI: Get the RSSI of the last received packet
1352 +)))
1316 1316  
1354 +(((
1317 1317  AT+TDC: Get or set the application data transmission interval in ms
1356 +)))
1318 1318  
1358 +(((
1319 1319  AT+PORT: Get or set the application port
1360 +)))
1320 1320  
1362 +(((
1321 1321  AT+DISAT: Disable AT commands
1364 +)))
1322 1322  
1366 +(((
1323 1323  AT+PWORD: Set password, max 9 digits
1368 +)))
1324 1324  
1370 +(((
1325 1325  AT+CHS: Get or Set Frequency (Unit: Hz) for Single Channel Mode
1372 +)))
1326 1326  
1374 +(((
1327 1327  AT+CHE: Get or Set eight channels mode, Only for US915, AU915, CN470
1376 +)))
1328 1328  
1378 +(((
1329 1329  AT+CFG: Print all settings
1380 +)))
1330 1330  
1331 1331  
1332 1332  
1333 -1.
1384 +1.
1334 1334  11. Common AT Command Sequence
1335 1335  111. Multi-channel ABP mode (Use with SX1301/LG308)
1336 1336  
... ... @@ -1353,8 +1353,8 @@
1353 1353  
1354 1354  ATZ
1355 1355  
1356 -1.
1357 -11.
1407 +1.
1408 +11.
1358 1358  111. Single-channel ABP mode (Use with LG01/LG02)
1359 1359  
1360 1360  123456   Enter Password to have AT access.
... ... @@ -1394,7 +1394,7 @@
1394 1394  
1395 1395  
1396 1396  1.
1397 -11.
1448 +11.
1398 1398  111. Change to Class A
1399 1399  
1400 1400  If sensor JOINED
... ... @@ -1409,7 +1409,7 @@
1409 1409  
1410 1410  1. FAQ
1411 1411  
1412 -1.
1463 +1.
1413 1413  11. How to upgrade the image?
1414 1414  
1415 1415  The LT LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to LT to:
... ... @@ -1468,7 +1468,7 @@
1468 1468  User can follow the introduction for [[how to upgrade image>>path:#upgrade_image]]. When download the images, choose the required image file for download.
1469 1469  
1470 1470  
1471 -1.
1522 +1.
1472 1472  11. How to set up LT to work with Single Channel Gateway such as LG01/LG02?
1473 1473  
1474 1474  In this case, users need to set LT-33222-L to work in ABP mode & transmit in only one frequency.
... ... @@ -1527,7 +1527,7 @@
1527 1527  [[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]]
1528 1528  
1529 1529  
1530 -1.
1581 +1.
1531 1531  11. Have trouble to upload image.
1532 1532  
1533 1533  See this link for trouble shooting:
... ... @@ -1535,7 +1535,7 @@
1535 1535  [[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]]
1536 1536  
1537 1537  
1538 -1.
1589 +1.
1539 1539  11. Why I can’t join TTN in US915 /AU915 bands?
1540 1540  
1541 1541  It might be about the channels mapping. Please see this link for detail:
1653358238933-385.png
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