Last modified by Saxer Lin on 2025/04/15 17:24
<
From version < 47.1 >
edited by Xiaoling
on 2022/05/24 09:54
To version < 58.1 >
edited by Xiaoling
on 2022/05/24 10:24
>
Change comment: Uploaded new attachment "1653359097980-169.png", version {1}

Summary

Details

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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: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: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: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.
... ... @@ -1173,232 +1173,279 @@
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 -
1347 1347  If device has not joined network yet:
1348 1348  
1349 -123456
1388 +(% style="background-color:#dcdcdc" %)123456
1350 1350  
1351 -AT+FDR
1390 +(% style="background-color:#dcdcdc" %)AT+FDR
1352 1352  
1353 -123456
1392 +(% style="background-color:#dcdcdc" %)123456
1354 1354  
1355 -AT+NJM=0
1394 +(% style="background-color:#dcdcdc" %)AT+NJM=0
1356 1356  
1357 -ATZ
1396 +(% style="background-color:#dcdcdc" %)ATZ
1358 1358  
1359 1359  
1360 1360  If device already joined network:
1361 1361  
1362 -AT+NJM=0
1401 +(% style="background-color:#dcdcdc" %)AT+NJM=0
1363 1363  
1364 -ATZ
1403 +(% style="background-color:#dcdcdc" %)ATZ
1365 1365  
1366 -1.
1367 -11.
1368 -111. Single-channel ABP mode (Use with LG01/LG02)
1405 +=== 4.2.2 Single-channel ABP mode (Use with LG01/LG02) ===
1369 1369  
1370 -123456   Enter Password to have AT access.
1407 +(% style="background-color:#dcdcdc" %) 123456(%%)   Enter Password to have AT access.
1371 1371  
1372 -AT+FDR   Reset Parameters to Factory Default, Keys Reserve
1409 +(% style="background-color:#dcdcdc" %) AT+FDR(%%)   Reset Parameters to Factory Default, Keys Reserve
1373 1373  
1374 -123456   Enter Password to have AT access.
1411 +(% style="background-color:#dcdcdc" %) 123456(%%)   Enter Password to have AT access.
1375 1375  
1376 -AT+CLASS=C Set to work in CLASS C
1413 +(% style="background-color:#dcdcdc" %) AT+CLASS=C(%%) Set to work in CLASS C
1377 1377  
1378 -AT+NJM=0 Set to ABP mode
1415 +(% style="background-color:#dcdcdc" %) AT+NJM=0(%%) Set to ABP mode
1379 1379  
1380 -AT+ADR=0 Set the Adaptive Data Rate Off
1417 +(% style="background-color:#dcdcdc" %) AT+ADR=0(%%) Set the Adaptive Data Rate Off
1381 1381  
1382 -AT+DR=5  Set Data Rate
1419 +(% style="background-color:#dcdcdc" %) AT+DR=5(%%)  Set Data Rate
1383 1383  
1384 -AT+TDC=60000  Set transmit interval to 60 seconds
1421 +(% style="background-color:#dcdcdc" %) AT+TDC=60000(%%)  Set transmit interval to 60 seconds
1385 1385  
1386 -AT+CHS=868400000 Set transmit frequency to 868.4Mhz
1423 +(% style="background-color:#dcdcdc" %) AT+CHS=868400000(%%) Set transmit frequency to 868.4Mhz
1387 1387  
1388 -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)
1389 1389  
1390 -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
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.
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.
1393 1393  
1394 -ATZ          Reset MCU
1431 +(% style="background-color:#dcdcdc" %) ATZ         (%%) Reset MCU
1395 1395  
1396 -**Note:**
1433 +(% style="color:red" %)**Note:**
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
1435 +(% 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
1402 1402  
1403 1403  [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image031.png]]
1404 1404  
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