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Last modified by Xiaoling on 2025/04/23 15:57
From version 41.7
edited by Xiaoling
on 2022/06/06 10:56
Change comment: There is no comment for this version
To version 41.27
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  
... ... @@ -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:**
... ... @@ -1058,6 +1058,7 @@
1058 1058  
1059 1059  
1060 1060  
1076 +
1061 1061  ==== **Fast command to handle MODBUS device** ====
1062 1062  
1063 1063  AT+MBFUN is valid since v1.3 firmware version. The command is for fast configure to read Modbus devices. It is only valid for the devices which follow the [[MODBUS-RTU protocol>>url:https://www.modbustools.com/modbus.html]].
... ... @@ -1091,6 +1091,7 @@
1091 1091  
1092 1092  
1093 1093  
1110 +
1094 1094  ==== **RS485 command timeout** ====
1095 1095  
1096 1096  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.
... ... @@ -1122,6 +1122,7 @@
1122 1122  
1123 1123  
1124 1124  
1142 +
1125 1125  ==== **Uplink payload mode** ====
1126 1126  
1127 1127  Define to use one uplink or multiple uplinks for the sampling.
... ... @@ -1168,7 +1168,9 @@
1168 1168  
1169 1169  * **AT Command:**
1170 1170  
1189 +(((
1171 1171  (% 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 +)))
1172 1172  
1173 1173  Example screen shot after clear all RS485 commands. 
1174 1174  
... ... @@ -1184,6 +1184,7 @@
1184 1184  
1185 1185  
1186 1186  
1207 +
1187 1187  ==== **Set Serial Communication Parameters** ====
1188 1188  
1189 1189  Set the Rs485 serial communication parameters:
... ... @@ -1227,6 +1227,7 @@
1227 1227  
1228 1228  
1229 1229  
1251 +
1230 1230  ==== **Control output power duration** ====
1231 1231  
1232 1232  User can set the output power duration before each sampling.
... ... @@ -1250,44 +1250,83 @@
1250 1250  
1251 1251  == 3.6 Buttons ==
1252 1252  
1253 -(% border="1" style="background-color:#ffffcc; color:green; width:233px" %)
1275 +(% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:233px" %)
1254 1254  |=(% style="width: 89px;" %)**Button**|=(% style="width: 141px;" %)**Feature**
1255 1255  |(% style="width:89px" %)**RST**|(% style="width:141px" %)Reboot RS485-BL
1256 1256  
1279 +
1280 +
1257 1257  == 3.7 +3V3 Output ==
1258 1258  
1283 +(((
1259 1259  RS485-BL has a Controllable +3V3 output, user can use this output to power external sensor.
1285 +)))
1260 1260  
1287 +(((
1261 1261  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 +)))
1262 1262  
1291 +(((
1263 1263  The +3V3 output time can be controlled by AT Command.
1293 +)))
1264 1264  
1295 +(((
1296 +
1297 +)))
1265 1265  
1299 +(((
1266 1266  (% style="color:#037691" %)**AT+3V3T=1000**
1301 +)))
1267 1267  
1303 +(((
1304 +
1305 +)))
1268 1268  
1307 +(((
1269 1269  Means set +3v3 valid time to have 1000ms. So, the real +3v3 output will actually have 1000ms + sampling time for other sensors.
1309 +)))
1270 1270  
1311 +(((
1271 1271  By default, the AT+3V3T=0. This is a special case, means the +3V3 output is always on at any time
1313 +)))
1272 1272  
1273 1273  
1274 1274  == 3.8 +5V Output ==
1275 1275  
1318 +(((
1276 1276  RS485-BL has a Controllable +5V output, user can use this output to power external sensor.
1320 +)))
1277 1277  
1322 +(((
1278 1278  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 +)))
1279 1279  
1326 +(((
1280 1280  The 5V output time can be controlled by AT Command.
1328 +)))
1281 1281  
1330 +(((
1331 +
1332 +)))
1282 1282  
1334 +(((
1283 1283  (% style="color:#037691" %)**AT+5VT=1000**
1336 +)))
1284 1284  
1338 +(((
1339 +
1340 +)))
1285 1285  
1342 +(((
1286 1286  Means set 5V valid time to have 1000ms. So, the real 5V output will actually have 1000ms + sampling time for other sensors.
1344 +)))
1287 1287  
1346 +(((
1288 1288  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 +)))
1289 1289  
1290 1290  
1351 +
1291 1291  == 3.9 LEDs ==
1292 1292  
1293 1293  (% border="1" style="background-color:#ffffcc; color:green; width:332px" %)
... ... @@ -1294,6 +1294,8 @@
1294 1294  |=**LEDs**|=(% style="width: 274px;" %)**Feature**
1295 1295  |**LED1**|(% style="width:274px" %)Blink when device transmit a packet.
1296 1296  
1358 +
1359 +
1297 1297  == 3.10 Switch Jumper ==
1298 1298  
1299 1299  (% border="1" style="background-color:#ffffcc; color:green; width:515px" %)
... ... @@ -1309,9 +1309,13 @@
1309 1309  3.3v position: set to compatible with 3.3v I/O.,
1310 1310  )))
1311 1311  
1375 +(((
1312 1312  **+3.3V**: is always ON
1377 +)))
1313 1313  
1379 +(((
1314 1314  **+5V**: Only open before every sampling. The time is by default, it is AT+5VT=0.  Max open time. 5000 ms.
1381 +)))
1315 1315  
1316 1316  
1317 1317  = 4. Case Study =
... ... @@ -1323,17 +1323,23 @@
1323 1323  
1324 1324  == 5.1 Access AT Command ==
1325 1325  
1393 +(((
1326 1326  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 +)))
1327 1327  
1328 1328  [[image:1654135840598-282.png]]
1329 1329  
1330 1330  
1400 +(((
1331 1331  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 +)))
1332 1332  
1333 1333  [[image:1654136105500-922.png]]
1334 1334  
1335 1335  
1407 +(((
1336 1336  More detail AT Command manual can be found at [[AT Command Manual>>||anchor="H3.5ConfigureRS485-BLviaATorDownlink"]]
1409 +)))
1337 1337  
1338 1338  
1339 1339  == 5.2 Common AT Command Sequence ==
... ... @@ -1358,7 +1358,9 @@
1358 1358  )))
1359 1359  
1360 1360  
1434 +(((
1361 1361  If device already joined network:
1436 +)))
1362 1362  
1363 1363  (% class="box infomessage" %)
1364 1364  (((