Skip to Content
Last modified by Xiaoling on 2025/04/23 15:57
From version 41.14
edited by Xiaoling
on 2022/06/06 10:58
Change comment: There is no comment for this version
To version 41.26
edited by Xiaoling
on 2022/06/06 11:11
Change comment: There is no comment for this version

Summary

Details

Page properties
Content
... ... @@ -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:**
... ... @@ -1258,44 +1258,83 @@
1258 1258  
1259 1259  == 3.6 Buttons ==
1260 1260  
1261 -(% border="1" style="background-color:#ffffcc; color:green; width:233px" %)
1275 +(% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:233px" %)
1262 1262  |=(% style="width: 89px;" %)**Button**|=(% style="width: 141px;" %)**Feature**
1263 1263  |(% style="width:89px" %)**RST**|(% style="width:141px" %)Reboot RS485-BL
1264 1264  
1279 +
1280 +
1265 1265  == 3.7 +3V3 Output ==
1266 1266  
1283 +(((
1267 1267  RS485-BL has a Controllable +3V3 output, user can use this output to power external sensor.
1285 +)))
1268 1268  
1287 +(((
1269 1269  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 +)))
1270 1270  
1291 +(((
1271 1271  The +3V3 output time can be controlled by AT Command.
1293 +)))
1272 1272  
1295 +(((
1296 +
1297 +)))
1273 1273  
1299 +(((
1274 1274  (% style="color:#037691" %)**AT+3V3T=1000**
1301 +)))
1275 1275  
1303 +(((
1304 +
1305 +)))
1276 1276  
1307 +(((
1277 1277  Means set +3v3 valid time to have 1000ms. So, the real +3v3 output will actually have 1000ms + sampling time for other sensors.
1309 +)))
1278 1278  
1311 +(((
1279 1279  By default, the AT+3V3T=0. This is a special case, means the +3V3 output is always on at any time
1313 +)))
1280 1280  
1281 1281  
1282 1282  == 3.8 +5V Output ==
1283 1283  
1318 +(((
1284 1284  RS485-BL has a Controllable +5V output, user can use this output to power external sensor.
1320 +)))
1285 1285  
1322 +(((
1286 1286  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 +)))
1287 1287  
1326 +(((
1288 1288  The 5V output time can be controlled by AT Command.
1328 +)))
1289 1289  
1330 +(((
1331 +
1332 +)))
1290 1290  
1334 +(((
1291 1291  (% style="color:#037691" %)**AT+5VT=1000**
1336 +)))
1292 1292  
1338 +(((
1339 +
1340 +)))
1293 1293  
1342 +(((
1294 1294  Means set 5V valid time to have 1000ms. So, the real 5V output will actually have 1000ms + sampling time for other sensors.
1344 +)))
1295 1295  
1346 +(((
1296 1296  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 +)))
1297 1297  
1298 1298  
1351 +
1299 1299  == 3.9 LEDs ==
1300 1300  
1301 1301  (% border="1" style="background-color:#ffffcc; color:green; width:332px" %)
... ... @@ -1302,6 +1302,8 @@
1302 1302  |=**LEDs**|=(% style="width: 274px;" %)**Feature**
1303 1303  |**LED1**|(% style="width:274px" %)Blink when device transmit a packet.
1304 1304  
1358 +
1359 +
1305 1305  == 3.10 Switch Jumper ==
1306 1306  
1307 1307  (% border="1" style="background-color:#ffffcc; color:green; width:515px" %)
... ... @@ -1317,9 +1317,13 @@
1317 1317  3.3v position: set to compatible with 3.3v I/O.,
1318 1318  )))
1319 1319  
1375 +(((
1320 1320  **+3.3V**: is always ON
1377 +)))
1321 1321  
1379 +(((
1322 1322  **+5V**: Only open before every sampling. The time is by default, it is AT+5VT=0.  Max open time. 5000 ms.
1381 +)))
1323 1323  
1324 1324  
1325 1325  = 4. Case Study =
... ... @@ -1331,17 +1331,23 @@
1331 1331  
1332 1332  == 5.1 Access AT Command ==
1333 1333  
1393 +(((
1334 1334  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 +)))
1335 1335  
1336 1336  [[image:1654135840598-282.png]]
1337 1337  
1338 1338  
1400 +(((
1339 1339  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 +)))
1340 1340  
1341 1341  [[image:1654136105500-922.png]]
1342 1342  
1343 1343  
1407 +(((
1344 1344  More detail AT Command manual can be found at [[AT Command Manual>>||anchor="H3.5ConfigureRS485-BLviaATorDownlink"]]
1409 +)))
1345 1345  
1346 1346  
1347 1347  == 5.2 Common AT Command Sequence ==