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Last modified by Xiaoling on 2025/04/23 15:57
From version 41.11
edited by Xiaoling
on 2022/06/06 10:58
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  
... ... @@ -964,7 +964,9 @@
964 964  
965 965  (% style="color:#037691" %)**A8 01 06 0A 05 00 04 00 00 00**(%%): to deactivate the RS485 Alarm
966 966  
979 +(((
967 967  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 +)))
968 968  
969 969  
970 970  **Example 2:**
... ... @@ -1172,7 +1172,9 @@
1172 1172  
1173 1173  * **AT Command:**
1174 1174  
1189 +(((
1175 1175  (% 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 +)))
1176 1176  
1177 1177  Example screen shot after clear all RS485 commands. 
1178 1178  
... ... @@ -1188,6 +1188,7 @@
1188 1188  
1189 1189  
1190 1190  
1207 +
1191 1191  ==== **Set Serial Communication Parameters** ====
1192 1192  
1193 1193  Set the Rs485 serial communication parameters:
... ... @@ -1231,6 +1231,7 @@
1231 1231  
1232 1232  
1233 1233  
1251 +
1234 1234  ==== **Control output power duration** ====
1235 1235  
1236 1236  User can set the output power duration before each sampling.
... ... @@ -1254,44 +1254,83 @@
1254 1254  
1255 1255  == 3.6 Buttons ==
1256 1256  
1257 -(% border="1" style="background-color:#ffffcc; color:green; width:233px" %)
1275 +(% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:233px" %)
1258 1258  |=(% style="width: 89px;" %)**Button**|=(% style="width: 141px;" %)**Feature**
1259 1259  |(% style="width:89px" %)**RST**|(% style="width:141px" %)Reboot RS485-BL
1260 1260  
1279 +
1280 +
1261 1261  == 3.7 +3V3 Output ==
1262 1262  
1283 +(((
1263 1263  RS485-BL has a Controllable +3V3 output, user can use this output to power external sensor.
1285 +)))
1264 1264  
1287 +(((
1265 1265  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 +)))
1266 1266  
1291 +(((
1267 1267  The +3V3 output time can be controlled by AT Command.
1293 +)))
1268 1268  
1295 +(((
1296 +
1297 +)))
1269 1269  
1299 +(((
1270 1270  (% style="color:#037691" %)**AT+3V3T=1000**
1301 +)))
1271 1271  
1303 +(((
1304 +
1305 +)))
1272 1272  
1307 +(((
1273 1273  Means set +3v3 valid time to have 1000ms. So, the real +3v3 output will actually have 1000ms + sampling time for other sensors.
1309 +)))
1274 1274  
1311 +(((
1275 1275  By default, the AT+3V3T=0. This is a special case, means the +3V3 output is always on at any time
1313 +)))
1276 1276  
1277 1277  
1278 1278  == 3.8 +5V Output ==
1279 1279  
1318 +(((
1280 1280  RS485-BL has a Controllable +5V output, user can use this output to power external sensor.
1320 +)))
1281 1281  
1322 +(((
1282 1282  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 +)))
1283 1283  
1326 +(((
1284 1284  The 5V output time can be controlled by AT Command.
1328 +)))
1285 1285  
1330 +(((
1331 +
1332 +)))
1286 1286  
1334 +(((
1287 1287  (% style="color:#037691" %)**AT+5VT=1000**
1336 +)))
1288 1288  
1338 +(((
1339 +
1340 +)))
1289 1289  
1342 +(((
1290 1290  Means set 5V valid time to have 1000ms. So, the real 5V output will actually have 1000ms + sampling time for other sensors.
1344 +)))
1291 1291  
1346 +(((
1292 1292  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 +)))
1293 1293  
1294 1294  
1351 +
1295 1295  == 3.9 LEDs ==
1296 1296  
1297 1297  (% border="1" style="background-color:#ffffcc; color:green; width:332px" %)
... ... @@ -1298,6 +1298,8 @@
1298 1298  |=**LEDs**|=(% style="width: 274px;" %)**Feature**
1299 1299  |**LED1**|(% style="width:274px" %)Blink when device transmit a packet.
1300 1300  
1358 +
1359 +
1301 1301  == 3.10 Switch Jumper ==
1302 1302  
1303 1303  (% border="1" style="background-color:#ffffcc; color:green; width:515px" %)
... ... @@ -1313,9 +1313,13 @@
1313 1313  3.3v position: set to compatible with 3.3v I/O.,
1314 1314  )))
1315 1315  
1375 +(((
1316 1316  **+3.3V**: is always ON
1377 +)))
1317 1317  
1379 +(((
1318 1318  **+5V**: Only open before every sampling. The time is by default, it is AT+5VT=0.  Max open time. 5000 ms.
1381 +)))
1319 1319  
1320 1320  
1321 1321  = 4. Case Study =
... ... @@ -1327,17 +1327,23 @@
1327 1327  
1328 1328  == 5.1 Access AT Command ==
1329 1329  
1393 +(((
1330 1330  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 +)))
1331 1331  
1332 1332  [[image:1654135840598-282.png]]
1333 1333  
1334 1334  
1400 +(((
1335 1335  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 +)))
1336 1336  
1337 1337  [[image:1654136105500-922.png]]
1338 1338  
1339 1339  
1407 +(((
1340 1340  More detail AT Command manual can be found at [[AT Command Manual>>||anchor="H3.5ConfigureRS485-BLviaATorDownlink"]]
1409 +)))
1341 1341  
1342 1342  
1343 1343  == 5.2 Common AT Command Sequence ==
... ... @@ -1362,7 +1362,9 @@
1362 1362  )))
1363 1363  
1364 1364  
1434 +(((
1365 1365  If device already joined network:
1436 +)))
1366 1366  
1367 1367  (% class="box infomessage" %)
1368 1368  (((
... ... @@ -1401,10 +1401,12 @@
1401 1401  
1402 1402  (% style="color:red" %)**Note:**
1403 1403  
1475 +(((
1404 1404  (% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server.
1405 1405  2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
1406 1406  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.
1407 1407  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 +)))
1408 1408  
1409 1409  [[image:1654136435598-589.png]]
1410 1410