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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 41.26
edited by Xiaoling
on 2022/06/06 11:11
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 ==