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Last modified by Xiaoling on 2025/04/23 15:57
From version 41.8
edited by Xiaoling
on 2022/06/06 10:56
Change comment: There is no comment for this version
To version 41.28
edited by Xiaoling
on 2022/06/06 11:12
Change comment: There is no comment for this version

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... ... @@ -510,6 +510,10 @@
510 510  )))
511 511  
512 512  (((
513 +
514 +)))
515 +
516 +(((
513 513  **AT+SEARCHx**: This command defines how to handle the return from AT+COMMANDx.
514 514  )))
515 515  
... ... @@ -882,13 +882,21 @@
882 882  
883 883  == 3.5 Configure RS485-BL via AT or Downlink ==
884 884  
889 +(((
885 885  User can configure RS485-BL via AT Commands or LoRaWAN Downlink Commands
891 +)))
886 886  
893 +(((
887 887  There are two kinds of Commands:
895 +)))
888 888  
889 -* (% style="color:#4f81bd" %)**Common Commands**(%%): They should be available for each sensor, such as: change uplink interval, reset device. For firmware v1.3, user can find what common commands it supports: [[AT Commands and Downlink Command>>doc:Main.End Device AT Commands and Downlink Command.WebHome]]
897 +* (((
898 +(% style="color:#4f81bd" %)**Common Commands**(%%): They should be available for each sensor, such as: change uplink interval, reset device. For firmware v1.3, user can find what common commands it supports: [[AT Commands and Downlink Command>>doc:Main.End Device AT Commands and Downlink Command.WebHome]]
899 +)))
890 890  
891 -* (% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for RS485-BL.  User can see these commands below:
901 +* (((
902 +(% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for RS485-BL.  User can see these commands below:
903 +)))
892 892  
893 893  
894 894  
... ... @@ -900,6 +900,7 @@
900 900  === 3.5.2 Sensor related commands: ===
901 901  
902 902  
915 +
903 903  ==== **Choose Device Type (RS485 or TTL)** ====
904 904  
905 905  RS485-BL can connect to either RS485 sensors or TTL sensor. User need to specify what type of sensor need to connect.
... ... @@ -963,7 +963,9 @@
963 963  
964 964  (% style="color:#037691" %)**A8 01 06 0A 05 00 04 00 00 00**(%%): to deactivate the RS485 Alarm
965 965  
979 +(((
966 966  A8 is type code and 01 means add CRC-16/MODBUS at the end, the 3^^rd^^ byte is 06, means the next 6 bytes are the command to be sent to the RS485 network, the final byte 00 means this command don’t need to acquire output.
981 +)))
967 967  
968 968  
969 969  **Example 2:**
... ... @@ -1092,6 +1092,7 @@
1092 1092  
1093 1093  
1094 1094  
1110 +
1095 1095  ==== **RS485 command timeout** ====
1096 1096  
1097 1097  Some Modbus device has slow action to send replies. This command is used to configure the RS485-BL to use longer time to wait for their action.
... ... @@ -1123,6 +1123,7 @@
1123 1123  
1124 1124  
1125 1125  
1142 +
1126 1126  ==== **Uplink payload mode** ====
1127 1127  
1128 1128  Define to use one uplink or multiple uplinks for the sampling.
... ... @@ -1169,7 +1169,9 @@
1169 1169  
1170 1170  * **AT Command:**
1171 1171  
1189 +(((
1172 1172  (% style="color:#037691" %)**AT+CMDEAR=mm,nn** (%%) mm: start position of erase ,nn: stop position of erase Etc. AT+CMDEAR=1,10 means erase AT+COMMAND1/AT+DATACUT1 to AT+COMMAND10/AT+DATACUT10
1191 +)))
1173 1173  
1174 1174  Example screen shot after clear all RS485 commands. 
1175 1175  
... ... @@ -1185,6 +1185,7 @@
1185 1185  
1186 1186  
1187 1187  
1207 +
1188 1188  ==== **Set Serial Communication Parameters** ====
1189 1189  
1190 1190  Set the Rs485 serial communication parameters:
... ... @@ -1228,6 +1228,7 @@
1228 1228  
1229 1229  
1230 1230  
1251 +
1231 1231  ==== **Control output power duration** ====
1232 1232  
1233 1233  User can set the output power duration before each sampling.
... ... @@ -1251,44 +1251,83 @@
1251 1251  
1252 1252  == 3.6 Buttons ==
1253 1253  
1254 -(% border="1" style="background-color:#ffffcc; color:green; width:233px" %)
1275 +(% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:233px" %)
1255 1255  |=(% style="width: 89px;" %)**Button**|=(% style="width: 141px;" %)**Feature**
1256 1256  |(% style="width:89px" %)**RST**|(% style="width:141px" %)Reboot RS485-BL
1257 1257  
1279 +
1280 +
1258 1258  == 3.7 +3V3 Output ==
1259 1259  
1283 +(((
1260 1260  RS485-BL has a Controllable +3V3 output, user can use this output to power external sensor.
1285 +)))
1261 1261  
1287 +(((
1262 1262  The +3V3 output will be valid for every sampling. RS485-BL will enable +3V3 output before all sampling and disable the +3V3 after all sampling. 
1289 +)))
1263 1263  
1291 +(((
1264 1264  The +3V3 output time can be controlled by AT Command.
1293 +)))
1265 1265  
1295 +(((
1296 +
1297 +)))
1266 1266  
1299 +(((
1267 1267  (% style="color:#037691" %)**AT+3V3T=1000**
1301 +)))
1268 1268  
1303 +(((
1304 +
1305 +)))
1269 1269  
1307 +(((
1270 1270  Means set +3v3 valid time to have 1000ms. So, the real +3v3 output will actually have 1000ms + sampling time for other sensors.
1309 +)))
1271 1271  
1311 +(((
1272 1272  By default, the AT+3V3T=0. This is a special case, means the +3V3 output is always on at any time
1313 +)))
1273 1273  
1274 1274  
1275 1275  == 3.8 +5V Output ==
1276 1276  
1318 +(((
1277 1277  RS485-BL has a Controllable +5V output, user can use this output to power external sensor.
1320 +)))
1278 1278  
1322 +(((
1279 1279  The +5V output will be valid for every sampling. RS485-BL will enable +5V output before all sampling and disable the +5v after all sampling. 
1324 +)))
1280 1280  
1326 +(((
1281 1281  The 5V output time can be controlled by AT Command.
1328 +)))
1282 1282  
1330 +(((
1331 +
1332 +)))
1283 1283  
1334 +(((
1284 1284  (% style="color:#037691" %)**AT+5VT=1000**
1336 +)))
1285 1285  
1338 +(((
1339 +
1340 +)))
1286 1286  
1342 +(((
1287 1287  Means set 5V valid time to have 1000ms. So, the real 5V output will actually have 1000ms + sampling time for other sensors.
1344 +)))
1288 1288  
1346 +(((
1289 1289  By default, the AT+5VT=0. If the external sensor which require 5v and require more time to get stable state, user can use this command to increase the power ON duration for this sensor.
1348 +)))
1290 1290  
1291 1291  
1351 +
1292 1292  == 3.9 LEDs ==
1293 1293  
1294 1294  (% border="1" style="background-color:#ffffcc; color:green; width:332px" %)
... ... @@ -1295,6 +1295,8 @@
1295 1295  |=**LEDs**|=(% style="width: 274px;" %)**Feature**
1296 1296  |**LED1**|(% style="width:274px" %)Blink when device transmit a packet.
1297 1297  
1358 +
1359 +
1298 1298  == 3.10 Switch Jumper ==
1299 1299  
1300 1300  (% border="1" style="background-color:#ffffcc; color:green; width:515px" %)
... ... @@ -1310,9 +1310,13 @@
1310 1310  3.3v position: set to compatible with 3.3v I/O.,
1311 1311  )))
1312 1312  
1375 +(((
1313 1313  **+3.3V**: is always ON
1377 +)))
1314 1314  
1379 +(((
1315 1315  **+5V**: Only open before every sampling. The time is by default, it is AT+5VT=0.  Max open time. 5000 ms.
1381 +)))
1316 1316  
1317 1317  
1318 1318  = 4. Case Study =
... ... @@ -1324,17 +1324,23 @@
1324 1324  
1325 1325  == 5.1 Access AT Command ==
1326 1326  
1393 +(((
1327 1327  RS485-BL supports AT Command set. User can use a USB to TTL adapter plus the 3.5mm Program Cable to connect to RS485-BL to use AT command, as below.
1395 +)))
1328 1328  
1329 1329  [[image:1654135840598-282.png]]
1330 1330  
1331 1331  
1400 +(((
1332 1332  In PC, User needs to set (% style="color:blue" %)**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 of RS485-BL. The default password is 123456. Below is the output for reference:
1402 +)))
1333 1333  
1334 1334  [[image:1654136105500-922.png]]
1335 1335  
1336 1336  
1407 +(((
1337 1337  More detail AT Command manual can be found at [[AT Command Manual>>||anchor="H3.5ConfigureRS485-BLviaATorDownlink"]]
1409 +)))
1338 1338  
1339 1339  
1340 1340  == 5.2 Common AT Command Sequence ==
... ... @@ -1359,7 +1359,9 @@
1359 1359  )))
1360 1360  
1361 1361  
1434 +(((
1362 1362  If device already joined network:
1436 +)))
1363 1363  
1364 1364  (% class="box infomessage" %)
1365 1365  (((
... ... @@ -1398,10 +1398,12 @@
1398 1398  
1399 1399  (% style="color:red" %)**Note:**
1400 1400  
1475 +(((
1401 1401  (% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server.
1402 1402  2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
1403 1403  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.
1404 1404  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
1480 +)))
1405 1405  
1406 1406  [[image:1654136435598-589.png]]
1407 1407