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Last modified by Xiaoling on 2025/04/23 15:57
From version 40.55
edited by Xiaoling
on 2022/06/06 10:52
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  
... ... @@ -823,26 +823,8 @@
823 823  
824 824  == 3.4 Uplink Payload ==
825 825  
826 -(% border="1" style="background-color:#4f81bd; color:white; width:850px" %)
827 -|**Size(bytes)**|(% style="width:130px" %)**2**|(% style="width:93px" %)**1**|(% style="width:509px" %)**Length depends on the return from the commands**
828 -|Value|(% style="width:130px" %)(((
829 -(((
830 -Battery(mV)
831 -)))
830 +[[image:image-20220606105412-1.png]]
832 832  
833 -(((
834 -&
835 -)))
836 -
837 -(((
838 -Interrupt _Flag
839 -)))
840 -)))|(% style="width:93px" %)(((
841 -PAYLOAD_VER
842 -
843 -
844 -)))|(% style="width:509px" %)If the valid payload is too long and exceed the maximum support payload length in server, server will show payload not provided in the LoRaWAN server.
845 -
846 846  Below is the decoder for the first 3 bytes. The rest bytes are dynamic depends on different RS485 sensors.
847 847  
848 848  (((
... ... @@ -900,14 +900,24 @@
900 900  
901 901  == 3.5 Configure RS485-BL via AT or Downlink ==
902 902  
889 +(((
903 903  User can configure RS485-BL via AT Commands or LoRaWAN Downlink Commands
891 +)))
904 904  
893 +(((
905 905  There are two kinds of Commands:
895 +)))
906 906  
907 -* (% 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 +)))
908 908  
909 -* (% 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 +)))
910 910  
905 +
906 +
911 911  === 3.5.1 Common Commands: ===
912 912  
913 913  They should be available for each of Dragino Sensors, such as: change uplink interval, reset device. For firmware v1.3, user can find what common commands it supports: [[End Device AT Commands and Downlink Command>>doc:Main.End Device AT Commands and Downlink Command.WebHome]]
... ... @@ -916,6 +916,7 @@
916 916  === 3.5.2 Sensor related commands: ===
917 917  
918 918  
915 +
919 919  ==== **Choose Device Type (RS485 or TTL)** ====
920 920  
921 921  RS485-BL can connect to either RS485 sensors or TTL sensor. User need to specify what type of sensor need to connect.
... ... @@ -939,6 +939,7 @@
939 939  
940 940  
941 941  
939 +
942 942  ==== **RS485 Debug Command (AT+CFGDEV)** ====
943 943  
944 944  This command is used to configure the RS485 or TTL sensors; they won’t be used during sampling.
... ... @@ -978,7 +978,9 @@
978 978  
979 979  (% style="color:#037691" %)**A8 01 06 0A 05 00 04 00 00 00**(%%): to deactivate the RS485 Alarm
980 980  
979 +(((
981 981  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 +)))
982 982  
983 983  
984 984  **Example 2:**
... ... @@ -990,6 +990,7 @@
990 990  
991 991  
992 992  
993 +
993 993  ==== **Set Payload version** ====
994 994  
995 995  This is the first byte of the uplink payload. RS485-BL can connect to different sensors. User can set the PAYVER field to tell server how to decode the current payload.
... ... @@ -1010,6 +1010,7 @@
1010 1010  
1011 1011  
1012 1012  
1014 +
1013 1013  ==== **Set RS485 Sampling Commands** ====
1014 1014  
1015 1015  AT+COMMANDx, AT+DATACUTx and AT+SEARCHx
... ... @@ -1071,6 +1071,7 @@
1071 1071  
1072 1072  
1073 1073  
1076 +
1074 1074  ==== **Fast command to handle MODBUS device** ====
1075 1075  
1076 1076  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]].
... ... @@ -1104,6 +1104,7 @@
1104 1104  
1105 1105  
1106 1106  
1110 +
1107 1107  ==== **RS485 command timeout** ====
1108 1108  
1109 1109  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.
... ... @@ -1135,6 +1135,7 @@
1135 1135  
1136 1136  
1137 1137  
1142 +
1138 1138  ==== **Uplink payload mode** ====
1139 1139  
1140 1140  Define to use one uplink or multiple uplinks for the sampling.
... ... @@ -1181,7 +1181,9 @@
1181 1181  
1182 1182  * **AT Command:**
1183 1183  
1189 +(((
1184 1184  (% 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 +)))
1185 1185  
1186 1186  Example screen shot after clear all RS485 commands. 
1187 1187  
... ... @@ -1197,6 +1197,7 @@
1197 1197  
1198 1198  
1199 1199  
1207 +
1200 1200  ==== **Set Serial Communication Parameters** ====
1201 1201  
1202 1202  Set the Rs485 serial communication parameters:
... ... @@ -1240,6 +1240,7 @@
1240 1240  
1241 1241  
1242 1242  
1251 +
1243 1243  ==== **Control output power duration** ====
1244 1244  
1245 1245  User can set the output power duration before each sampling.
... ... @@ -1263,44 +1263,83 @@
1263 1263  
1264 1264  == 3.6 Buttons ==
1265 1265  
1266 -(% border="1" style="background-color:#ffffcc; color:green; width:233px" %)
1275 +(% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:233px" %)
1267 1267  |=(% style="width: 89px;" %)**Button**|=(% style="width: 141px;" %)**Feature**
1268 1268  |(% style="width:89px" %)**RST**|(% style="width:141px" %)Reboot RS485-BL
1269 1269  
1279 +
1280 +
1270 1270  == 3.7 +3V3 Output ==
1271 1271  
1283 +(((
1272 1272  RS485-BL has a Controllable +3V3 output, user can use this output to power external sensor.
1285 +)))
1273 1273  
1287 +(((
1274 1274  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 +)))
1275 1275  
1291 +(((
1276 1276  The +3V3 output time can be controlled by AT Command.
1293 +)))
1277 1277  
1295 +(((
1296 +
1297 +)))
1278 1278  
1299 +(((
1279 1279  (% style="color:#037691" %)**AT+3V3T=1000**
1301 +)))
1280 1280  
1303 +(((
1304 +
1305 +)))
1281 1281  
1307 +(((
1282 1282  Means set +3v3 valid time to have 1000ms. So, the real +3v3 output will actually have 1000ms + sampling time for other sensors.
1309 +)))
1283 1283  
1311 +(((
1284 1284  By default, the AT+3V3T=0. This is a special case, means the +3V3 output is always on at any time
1313 +)))
1285 1285  
1286 1286  
1287 1287  == 3.8 +5V Output ==
1288 1288  
1318 +(((
1289 1289  RS485-BL has a Controllable +5V output, user can use this output to power external sensor.
1320 +)))
1290 1290  
1322 +(((
1291 1291  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 +)))
1292 1292  
1326 +(((
1293 1293  The 5V output time can be controlled by AT Command.
1328 +)))
1294 1294  
1330 +(((
1331 +
1332 +)))
1295 1295  
1334 +(((
1296 1296  (% style="color:#037691" %)**AT+5VT=1000**
1336 +)))
1297 1297  
1338 +(((
1339 +
1340 +)))
1298 1298  
1342 +(((
1299 1299  Means set 5V valid time to have 1000ms. So, the real 5V output will actually have 1000ms + sampling time for other sensors.
1344 +)))
1300 1300  
1346 +(((
1301 1301  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 +)))
1302 1302  
1303 1303  
1351 +
1304 1304  == 3.9 LEDs ==
1305 1305  
1306 1306  (% border="1" style="background-color:#ffffcc; color:green; width:332px" %)
... ... @@ -1307,6 +1307,8 @@
1307 1307  |=**LEDs**|=(% style="width: 274px;" %)**Feature**
1308 1308  |**LED1**|(% style="width:274px" %)Blink when device transmit a packet.
1309 1309  
1358 +
1359 +
1310 1310  == 3.10 Switch Jumper ==
1311 1311  
1312 1312  (% border="1" style="background-color:#ffffcc; color:green; width:515px" %)
... ... @@ -1322,9 +1322,13 @@
1322 1322  3.3v position: set to compatible with 3.3v I/O.,
1323 1323  )))
1324 1324  
1375 +(((
1325 1325  **+3.3V**: is always ON
1377 +)))
1326 1326  
1379 +(((
1327 1327  **+5V**: Only open before every sampling. The time is by default, it is AT+5VT=0.  Max open time. 5000 ms.
1381 +)))
1328 1328  
1329 1329  
1330 1330  = 4. Case Study =
... ... @@ -1336,17 +1336,23 @@
1336 1336  
1337 1337  == 5.1 Access AT Command ==
1338 1338  
1393 +(((
1339 1339  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 +)))
1340 1340  
1341 1341  [[image:1654135840598-282.png]]
1342 1342  
1343 1343  
1400 +(((
1344 1344  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 +)))
1345 1345  
1346 1346  [[image:1654136105500-922.png]]
1347 1347  
1348 1348  
1407 +(((
1349 1349  More detail AT Command manual can be found at [[AT Command Manual>>||anchor="H3.5ConfigureRS485-BLviaATorDownlink"]]
1409 +)))
1350 1350  
1351 1351  
1352 1352  == 5.2 Common AT Command Sequence ==
... ... @@ -1371,7 +1371,9 @@
1371 1371  )))
1372 1372  
1373 1373  
1434 +(((
1374 1374  If device already joined network:
1436 +)))
1375 1375  
1376 1376  (% class="box infomessage" %)
1377 1377  (((
... ... @@ -1410,10 +1410,12 @@
1410 1410  
1411 1411  (% style="color:red" %)**Note:**
1412 1412  
1475 +(((
1413 1413  (% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server.
1414 1414  2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
1415 1415  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.
1416 1416  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 +)))
1417 1417  
1418 1418  [[image:1654136435598-589.png]]
1419 1419  
image-20220606105412-1.png
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