Changes for page LT-22222-L -- LoRa I/O Controller User Manual
Last modified by Mengting Qiu on 2025/06/04 18:42
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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:/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:/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:/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" %) 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 ... ... @@ -1167,228 +1167,275 @@ 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 shownbelow: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 1382 +== 4.2 Common AT Command Sequence == 1331 1331 1384 +=== 4.2.1 Multi-channel ABP mode (Use with SX1301/LG308) === 1332 1332 1333 -1. 1334 -11. Common AT Command Sequence 1335 -111. Multi-channel ABP mode (Use with SX1301/LG308) 1336 - 1337 1337 If device has not joined network yet: 1338 1338 1339 -123456 1388 +(% style="background-color:#dcdcdc" %)123456 1340 1340 1341 -AT+FDR 1390 +(% style="background-color:#dcdcdc" %)AT+FDR 1342 1342 1343 -123456 1392 +(% style="background-color:#dcdcdc" %)123456 1344 1344 1345 -AT+NJM=0 1394 +(% style="background-color:#dcdcdc" %)AT+NJM=0 1346 1346 1347 -ATZ 1396 +(% style="background-color:#dcdcdc" %)ATZ 1348 1348 1349 1349 1350 1350 If device already joined network: 1351 1351 1352 -AT+NJM=0 1401 +(% style="background-color:#dcdcdc" %)AT+NJM=0 1353 1353 1354 -ATZ 1403 +(% style="background-color:#dcdcdc" %)ATZ 1355 1355 1356 -1. 1357 -11. 1358 -111. Single-channel ABP mode (Use with LG01/LG02) 1405 +=== 4.2.2 Single-channel ABP mode (Use with LG01/LG02) === 1359 1359 1360 -123456 Enter Password to have AT access. 1407 +(% style="background-color:#dcdcdc" %) 123456(%%) Enter Password to have AT access. 1361 1361 1362 -AT+FDR Reset Parameters to Factory Default, Keys Reserve 1409 +(% style="background-color:#dcdcdc" %) AT+FDR(%%) Reset Parameters to Factory Default, Keys Reserve 1363 1363 1364 -123456 Enter Password to have AT access. 1411 +(% style="background-color:#dcdcdc" %) 123456(%%) Enter Password to have AT access. 1365 1365 1366 -AT+CLASS=C Set to work in CLASS C 1413 +(% style="background-color:#dcdcdc" %) AT+CLASS=C(%%) Set to work in CLASS C 1367 1367 1368 -AT+NJM=0 Set to ABP mode 1415 +(% style="background-color:#dcdcdc" %) AT+NJM=0(%%) Set to ABP mode 1369 1369 1370 -AT+ADR=0 Set the Adaptive Data Rate Off 1417 +(% style="background-color:#dcdcdc" %) AT+ADR=0(%%) Set the Adaptive Data Rate Off 1371 1371 1372 -AT+DR=5 Set Data Rate 1419 +(% style="background-color:#dcdcdc" %) AT+DR=5(%%) Set Data Rate 1373 1373 1374 -AT+TDC=60000 Set transmit interval to 60 seconds 1421 +(% style="background-color:#dcdcdc" %) AT+TDC=60000(%%) Set transmit interval to 60 seconds 1375 1375 1376 -AT+CHS=868400000 Set transmit frequency to 868.4Mhz 1423 +(% style="background-color:#dcdcdc" %) AT+CHS=868400000(%%) Set transmit frequency to 868.4Mhz 1377 1377 1378 -AT+RX2FQ=868400000 Set RX2Frequency to 868.4Mhz (according to the result from server) 1425 +(% style="background-color:#dcdcdc" %) AT+RX2FQ=868400000(%%) Set RX2Frequency to 868.4Mhz (according to the result from server) 1379 1379 1380 -AT+RX2DR=5 Set RX2DR to match the downlink DR from server. see below 1427 +(% style="background-color:#dcdcdc" %) AT+RX2DR=5(%%) Set RX2DR to match the downlink DR from server. see below 1381 1381 1382 -AT+DADDR=26 01 1A F1 Set Device Address to 26 01 1A F1, this ID can be found in the LoRa Server portal. 1429 +(% 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. 1383 1383 1384 -ATZ 1431 +(% style="background-color:#dcdcdc" %) ATZ (%%) Reset MCU 1385 1385 1386 -**Note:** 1433 +(% style="color:red" %)**Note:** 1387 1387 1388 -1. Make sure the device is set to ABP mode in the IoT Server. 1389 - 1. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.1390 - 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.1391 - 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 51435 +(% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server. 1436 +2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting. 1437 +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. 1438 +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 1392 1392 1393 1393 [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image031.png]] 1394 1394
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