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Last modified by Xiaoling on 2025/04/23 15:57
From version 41.13
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:**
... ... @@ -1190,6 +1190,7 @@
1190 1190  
1191 1191  
1192 1192  
1207 +
1193 1193  ==== **Set Serial Communication Parameters** ====
1194 1194  
1195 1195  Set the Rs485 serial communication parameters:
... ... @@ -1233,6 +1233,7 @@
1233 1233  
1234 1234  
1235 1235  
1251 +
1236 1236  ==== **Control output power duration** ====
1237 1237  
1238 1238  User can set the output power duration before each sampling.
... ... @@ -1256,44 +1256,83 @@
1256 1256  
1257 1257  == 3.6 Buttons ==
1258 1258  
1259 -(% border="1" style="background-color:#ffffcc; color:green; width:233px" %)
1275 +(% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:233px" %)
1260 1260  |=(% style="width: 89px;" %)**Button**|=(% style="width: 141px;" %)**Feature**
1261 1261  |(% style="width:89px" %)**RST**|(% style="width:141px" %)Reboot RS485-BL
1262 1262  
1279 +
1280 +
1263 1263  == 3.7 +3V3 Output ==
1264 1264  
1283 +(((
1265 1265  RS485-BL has a Controllable +3V3 output, user can use this output to power external sensor.
1285 +)))
1266 1266  
1287 +(((
1267 1267  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 +)))
1268 1268  
1291 +(((
1269 1269  The +3V3 output time can be controlled by AT Command.
1293 +)))
1270 1270  
1295 +(((
1296 +
1297 +)))
1271 1271  
1299 +(((
1272 1272  (% style="color:#037691" %)**AT+3V3T=1000**
1301 +)))
1273 1273  
1303 +(((
1304 +
1305 +)))
1274 1274  
1307 +(((
1275 1275  Means set +3v3 valid time to have 1000ms. So, the real +3v3 output will actually have 1000ms + sampling time for other sensors.
1309 +)))
1276 1276  
1311 +(((
1277 1277  By default, the AT+3V3T=0. This is a special case, means the +3V3 output is always on at any time
1313 +)))
1278 1278  
1279 1279  
1280 1280  == 3.8 +5V Output ==
1281 1281  
1318 +(((
1282 1282  RS485-BL has a Controllable +5V output, user can use this output to power external sensor.
1320 +)))
1283 1283  
1322 +(((
1284 1284  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 +)))
1285 1285  
1326 +(((
1286 1286  The 5V output time can be controlled by AT Command.
1328 +)))
1287 1287  
1330 +(((
1331 +
1332 +)))
1288 1288  
1334 +(((
1289 1289  (% style="color:#037691" %)**AT+5VT=1000**
1336 +)))
1290 1290  
1338 +(((
1339 +
1340 +)))
1291 1291  
1342 +(((
1292 1292  Means set 5V valid time to have 1000ms. So, the real 5V output will actually have 1000ms + sampling time for other sensors.
1344 +)))
1293 1293  
1346 +(((
1294 1294  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 +)))
1295 1295  
1296 1296  
1351 +
1297 1297  == 3.9 LEDs ==
1298 1298  
1299 1299  (% border="1" style="background-color:#ffffcc; color:green; width:332px" %)
... ... @@ -1300,6 +1300,8 @@
1300 1300  |=**LEDs**|=(% style="width: 274px;" %)**Feature**
1301 1301  |**LED1**|(% style="width:274px" %)Blink when device transmit a packet.
1302 1302  
1358 +
1359 +
1303 1303  == 3.10 Switch Jumper ==
1304 1304  
1305 1305  (% border="1" style="background-color:#ffffcc; color:green; width:515px" %)
... ... @@ -1315,9 +1315,13 @@
1315 1315  3.3v position: set to compatible with 3.3v I/O.,
1316 1316  )))
1317 1317  
1375 +(((
1318 1318  **+3.3V**: is always ON
1377 +)))
1319 1319  
1379 +(((
1320 1320  **+5V**: Only open before every sampling. The time is by default, it is AT+5VT=0.  Max open time. 5000 ms.
1381 +)))
1321 1321  
1322 1322  
1323 1323  = 4. Case Study =
... ... @@ -1329,17 +1329,23 @@
1329 1329  
1330 1330  == 5.1 Access AT Command ==
1331 1331  
1393 +(((
1332 1332  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 +)))
1333 1333  
1334 1334  [[image:1654135840598-282.png]]
1335 1335  
1336 1336  
1400 +(((
1337 1337  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 +)))
1338 1338  
1339 1339  [[image:1654136105500-922.png]]
1340 1340  
1341 1341  
1407 +(((
1342 1342  More detail AT Command manual can be found at [[AT Command Manual>>||anchor="H3.5ConfigureRS485-BLviaATorDownlink"]]
1409 +)))
1343 1343  
1344 1344  
1345 1345  == 5.2 Common AT Command Sequence ==
... ... @@ -1364,7 +1364,9 @@
1364 1364  )))
1365 1365  
1366 1366  
1434 +(((
1367 1367  If device already joined network:
1436 +)))
1368 1368  
1369 1369  (% class="box infomessage" %)
1370 1370  (((
... ... @@ -1403,10 +1403,12 @@
1403 1403  
1404 1404  (% style="color:red" %)**Note:**
1405 1405  
1475 +(((
1406 1406  (% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server.
1407 1407  2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
1408 1408  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.
1409 1409  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 +)))
1410 1410  
1411 1411  [[image:1654136435598-589.png]]
1412 1412