Last modified by Saxer Lin on 2025/04/15 17:24
<
From version < 43.1 >
edited by Xiaoling
on 2022/05/24 09:49
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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... ... @@ -1043,8 +1043,6 @@
1043 1043  
1044 1044  [[image:image-20220524094641-12.png||height="402" width="718"]]
1045 1045  
1046 -
1047 -
1048 1048  **Step **3: Create an account or log in Mydevices.
1049 1049  
1050 1050  **Step 4**: Search LT-22222-L(for both LT-22222-L / LT-33222-L) and add DevEUI.(% style="display:none" %)
... ... @@ -1051,47 +1051,48 @@
1051 1051  
1052 1052  Search under The things network
1053 1053  
1054 -[[image:1653356838789-523.png]]
1052 +[[image:1653356838789-523.png||height="337" width="740"]]
1055 1055  
1056 -
1057 1057  After added, the sensor data arrive TTN, it will also arrive and show in Mydevices.
1058 1058  
1059 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image014.png]]
1060 1060  
1057 +[[image:image-20220524094909-1.png||height="335" width="729"]]
1061 1061  
1062 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image015.png]]
1059 +[[image:image-20220524094909-2.png||height="337" width="729"]]
1063 1063  
1061 +[[image:image-20220524094909-3.png||height="338" width="727"]]
1064 1064  
1065 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image016.png]]
1063 +[[image:image-20220524094909-4.png||height="339" width="728"]](% style="display:none" %)
1066 1066  
1065 +[[image:image-20220524094909-5.png||height="341" width="734"]]
1067 1067  
1068 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image017.png]]
1069 1069  
1070 1070  
1071 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image018.png]]
1072 1072  
1073 1073  
1074 -1.
1075 -11. Interface Detail
1076 -111. Digital Input Port: DI1/DI2 /DI3 ( For LT-33222-L, low active )
1071 +== 3.6 Interface Detail ==
1077 1077  
1073 +=== 3.6.1 Digital Input Port: DI1/DI2 /DI3 ( For LT-33222-L, low active ) ===
1074 +
1078 1078  Support NPN Type sensor
1079 1079  
1080 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image019.png]]
1077 +[[image:1653356991268-289.png]]
1081 1081  
1079 +=== 3.6.2 Digital Input Port: DI1/DI2 ( For LT-22222-L) ===
1082 1082  
1083 -
1084 -1.
1085 -11.
1086 -111. Digital Input Port: DI1/DI2 ( For LT-22222-L)
1087 -
1081 +(((
1088 1088  The DI port of LT-22222-L can support NPN or PNP output sensor.
1083 +)))
1089 1089  
1085 +(((
1090 1090  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 +)))
1091 1091  
1092 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image020.png]]
1089 +[[image:1653357170703-587.png]]
1093 1093  
1091 +(((
1094 1094  When use need to connect a device to the DI port, both DI1+ and DI1- must be connected.
1093 +)))
1095 1095  
1096 1096  
1097 1097  **Example1**: Connect to a Low active sensor.
... ... @@ -1101,11 +1101,11 @@
1101 1101  * Connect sensor’s output to DI1-
1102 1102  * Connect sensor’s VCC to DI1+.
1103 1103  
1104 -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： ​​
1105 1105  
1106 - //IF//[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image021.png]] = DI1+ / 1K.
1105 + //IF// = DI1+ / 1K.
1107 1107  
1108 -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.
1109 1109  
1110 1110  
1111 1111  **Example2**: Connect to a High active sensor.
... ... @@ -1117,12 +1117,12 @@
1117 1117  
1118 1118  So when sensor active, the current between NEC2501 pin1 and pin2 is:
1119 1119  
1120 - //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:image-20220524095628-8.png]]= DI1+ / 1K.**
1121 1121  
1122 -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:image-20220524095628-8.png]]** = 24mA , So the LT-22222-L will be able to detect this high active signal.
1123 1123  
1124 1124  
1125 -**Example3**: Connect to a 220v high active sensor.公司测试一下
1124 +**Example3**: Connect to a 220v high active sensor.
1126 1126  
1127 1127  Assume user want to monitor an active signal higher than 220v, to make sure not burn the photocoupler  
1128 1128  
... ... @@ -1131,34 +1131,24 @@
1131 1131  
1132 1132  So when sensor active, the current between NEC2501 pin1 and pin2 is:
1133 1133  
1134 - //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:image-20220524095628-8.png]] = DI1+ / 51K.**
1135 1135  
1136 -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.
1137 1137  
1137 +=== 3.6.3 Digital Output Port: DO1/DO2 /DO3 ===
1138 1138  
1139 -1.
1140 -11.
1141 -111. Digital Output Port: DO1/DO2 /DO3
1142 -
1143 1143  NPN output: GND or Float. Max voltage can apply to output pin is 36v.
1144 1144  
1145 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image023.png]]
1141 +[[image:1653357531600-905.png]]
1146 1146  
1143 +=== 3.6.4 Analog Input Interface ===
1147 1147  
1148 -
1149 -
1150 -1.
1151 -11.
1152 -111. Analog Input Interface
1153 -
1154 1154  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:
1155 1155  
1156 -AC2 = (IN2 voltage )/12
1147 +**AC2 = (IN2 voltage )/12**
1157 1157  
1158 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image024.png]]
1149 +[[image:1653357592296-182.png]]
1159 1159  
1160 -
1161 -
1162 1162  Example to connect a 4~~20mA sensor
1163 1163  
1164 1164  We take the wind speed sensor as an example for reference only.
... ... @@ -1174,170 +1174,221 @@
1174 1174  
1175 1175  Connection diagram:
1176 1176  
1177 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image025.jpg]]
1166 +[[image:1653357640609-758.png]]
1178 1178  
1179 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image026.png]]
1168 +[[image:1653357648330-671.png||height="155" width="733"]]
1180 1180  
1170 +=== 3.6.5 Relay Output ===
1181 1181  
1182 -
1183 -1.
1184 -11.
1185 -111. Relay Output
1186 -
1172 +(((
1187 1187  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 +)))
1188 1188  
1189 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image027.png]]
1176 +[[image:image-20220524100215-9.png]]
1190 1190  
1178 +[[image:image-20220524100215-10.png||height="382" width="723"]]
1191 1191  
1192 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image028.png]]
1180 +== 3.7 LEDs Indicators ==
1193 1193  
1182 +[[image:image-20220524100748-11.png]]
1194 1194  
1184 += 4. Use AT Command =
1195 1195  
1186 +== 4.1 Access AT Command ==
1196 1196  
1197 -
1198 -1.
1199 -11. LEDs Indicators
1200 -
1201 -(% border="1" style="background-color:#f7faff" %)
1202 -|**LEDs**|**Feature**
1203 -|**PWR**|Always on if there is power
1204 -|**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.
1205 -|**TX**|(((
1206 -Device boot: TX blinks 5 times.
1207 -
1208 -Successful join network: TX ON for 5 seconds.
1209 -
1210 -Transmit a LoRa packet: TX blinks once
1211 -)))
1212 -|**RX**|RX blinks once when receive a packet.
1213 -|**DO1**|
1214 -|**DO2**|
1215 -|**DO3**|
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 -|**DI2**|(((
1222 -For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1223 -
1224 -For LT-33222-L: ON when DI2 is low, LOW when DI2 is high
1225 -)))
1226 -|**DI3**|For LT-33222-L ONLY: ON when DI3 is low, LOW when DI3 is high
1227 -|**DI2**|(((
1228 -For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1229 -
1230 -For LT-33222-L: ON when DI2 is low, LOW when DI2 is high
1231 -)))
1232 -|**RO1**|
1233 -|**RO2**|
1234 -
1235 -1. Use AT Command
1236 -11. Access AT Command
1237 -
1238 1238  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.
1239 1239  
1240 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image029.png]]
1190 +[[image:1653358238933-385.png]]
1241 1241  
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:
1242 1242  
1243 -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]]
1244 1244  
1245 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image030.png]]
1246 -
1247 -
1248 1248  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/]]
1249 1249  
1198 +(((
1250 1250  AT+<CMD>?        : Help on <CMD>
1200 +)))
1251 1251  
1202 +(((
1252 1252  AT+<CMD>         : Run <CMD>
1204 +)))
1253 1253  
1206 +(((
1254 1254  AT+<CMD>=<value> : Set the value
1208 +)))
1255 1255  
1210 +(((
1256 1256  AT+<CMD>=?       : Get the value
1212 +)))
1257 1257  
1214 +(((
1258 1258  ATZ: Trig a reset of the MCU
1216 +)))
1259 1259  
1218 +(((
1260 1260  AT+FDR: Reset Parameters to Factory Default, Keys Reserve 
1220 +)))
1261 1261  
1222 +(((
1262 1262  AT+DEUI: Get or Set the Device EUI
1224 +)))
1263 1263  
1226 +(((
1264 1264  AT+DADDR: Get or Set the Device Address
1228 +)))
1265 1265  
1230 +(((
1266 1266  AT+APPKEY: Get or Set the Application Key
1232 +)))
1267 1267  
1234 +(((
1268 1268  AT+NWKSKEY: Get or Set the Network Session Key
1236 +)))
1269 1269  
1238 +(((
1270 1270  AT+APPSKEY: Get or Set the Application Session Key
1240 +)))
1271 1271  
1242 +(((
1272 1272  AT+APPEUI: Get or Set the Application EUI
1244 +)))
1273 1273  
1246 +(((
1274 1274  AT+ADR: Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1248 +)))
1275 1275  
1250 +(((
1276 1276  AT+TXP: Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1252 +)))
1277 1277  
1254 +(((
1278 1278  AT+DR: Get or Set the Data Rate. (0-7 corresponding to DR_X)  
1256 +)))
1279 1279  
1258 +(((
1280 1280  AT+DCS: Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1260 +)))
1281 1281  
1262 +(((
1282 1282  AT+PNM: Get or Set the public network mode. (0: off, 1: on)
1264 +)))
1283 1283  
1266 +(((
1284 1284  AT+RX2FQ: Get or Set the Rx2 window frequency
1268 +)))
1285 1285  
1270 +(((
1286 1286  AT+RX2DR: Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1272 +)))
1287 1287  
1274 +(((
1288 1288  AT+RX1DL: Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1276 +)))
1289 1289  
1278 +(((
1290 1290  AT+RX2DL: Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1280 +)))
1291 1291  
1282 +(((
1292 1292  AT+JN1DL: Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1284 +)))
1293 1293  
1286 +(((
1294 1294  AT+JN2DL: Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1288 +)))
1295 1295  
1290 +(((
1296 1296  AT+NJM: Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1292 +)))
1297 1297  
1294 +(((
1298 1298  AT+NWKID: Get or Set the Network ID
1296 +)))
1299 1299  
1298 +(((
1300 1300  AT+FCU: Get or Set the Frame Counter Uplink
1300 +)))
1301 1301  
1302 +(((
1302 1302  AT+FCD: Get or Set the Frame Counter Downlink
1304 +)))
1303 1303  
1306 +(((
1304 1304  AT+CLASS: Get or Set the Device Class
1308 +)))
1305 1305  
1310 +(((
1306 1306  AT+JOIN: Join network
1312 +)))
1307 1307  
1314 +(((
1308 1308  AT+NJS: Get OTAA Join Status
1316 +)))
1309 1309  
1318 +(((
1310 1310  AT+SENDB: Send hexadecimal data along with the application port
1320 +)))
1311 1311  
1322 +(((
1312 1312  AT+SEND: Send text data along with the application port
1324 +)))
1313 1313  
1326 +(((
1314 1314  AT+RECVB: Print last received data in binary format (with hexadecimal values)
1328 +)))
1315 1315  
1330 +(((
1316 1316  AT+RECV: Print last received data in raw format
1332 +)))
1317 1317  
1334 +(((
1318 1318  AT+VER: Get current image version and Frequency Band
1336 +)))
1319 1319  
1338 +(((
1320 1320  AT+CFM: Get or Set the confirmation mode (0-1)
1340 +)))
1321 1321  
1342 +(((
1322 1322  AT+CFS: Get confirmation status of the last AT+SEND (0-1)
1344 +)))
1323 1323  
1346 +(((
1324 1324  AT+SNR: Get the SNR of the last received packet
1348 +)))
1325 1325  
1350 +(((
1326 1326  AT+RSSI: Get the RSSI of the last received packet
1352 +)))
1327 1327  
1354 +(((
1328 1328  AT+TDC: Get or set the application data transmission interval in ms
1356 +)))
1329 1329  
1358 +(((
1330 1330  AT+PORT: Get or set the application port
1360 +)))
1331 1331  
1362 +(((
1332 1332  AT+DISAT: Disable AT commands
1364 +)))
1333 1333  
1366 +(((
1334 1334  AT+PWORD: Set password, max 9 digits
1368 +)))
1335 1335  
1370 +(((
1336 1336  AT+CHS: Get or Set Frequency (Unit: Hz) for Single Channel Mode
1372 +)))
1337 1337  
1374 +(((
1338 1338  AT+CHE: Get or Set eight channels mode, Only for US915, AU915, CN470
1376 +)))
1339 1339  
1378 +(((
1340 1340  AT+CFG: Print all settings
1380 +)))
1341 1341  
1342 1342  
1343 1343  
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