Last modified by Bei Jinggeng on 2025/01/16 11:36
<
From version < 58.9 >
edited by Xiaoling
on 2022/06/06 11:22
To version < 60.2 >
edited by Xiaoling
on 2022/06/14 10:49
>
Change comment: There is no comment for this version

Summary

Details

Page properties
Title
... ... @@ -1,1 +1,1 @@
1 -RS485-LN – RS485 to LoRaWAN Converter
1 +RS485-LN – RS485 to LoRaWAN Converter User Manual
Content
... ... @@ -3,7 +3,6 @@
3 3  
4 4  
5 5  
6 -**RS485-LN – RS485 to LoRaWAN Converter User Manual**
7 7  
8 8  
9 9  
... ... @@ -92,6 +92,7 @@
92 92  * Automatic RF Sense and CAD with ultra-fast AFC.
93 93  * Packet engine up to 256 bytes with CRC
94 94  
94 +
95 95  == 1.3 Features ==
96 96  
97 97  * LoRaWAN Class A & Class C protocol (default Class C)
... ... @@ -235,11 +235,15 @@
235 235  
236 236  (((
237 237  (((
238 +(((
238 238  There are plenty of RS485 devices in the market and each device has different command to read the valid data. To support these devices in flexible, RS485-LN supports flexible command set. User can use [[AT Commands>>||anchor="H3.5ConfigureRS485-BLviaATorDownlink"]] or LoRaWAN Downlink Command to configure what commands RS485-LN should send for each sampling and how to handle the return from RS485 devices.
239 239  )))
241 +)))
240 240  
241 241  (((
244 +(((
242 242  (% style="color:red" %)Note: below description and commands are for firmware version >v1.1, if you have firmware version v1.0. Please check the [[user manual v1.0>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/&file=RS485-LN_UserManual_v1.0.1.pdf]] or upgrade the firmware to v1.1
246 +)))
243 243  
244 244  
245 245  )))
... ... @@ -308,7 +308,6 @@
308 308  )))
309 309  
310 310  
311 -
312 312  === 3.3.2 Configure sensors ===
313 313  
314 314  (((
... ... @@ -320,15 +320,20 @@
320 320  (% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
321 321  |=(% style="width: 110px;" %)**AT Commands**|=(% style="width: 190px;" %)**Description**|=(% style="width: 190px;" %)**Example**
322 322  |AT+CFGDEV|(% style="width:110px" %)(((
326 +(((
323 323  This command is used to configure the RS485/TTL devices; they won’t be used during sampling.
328 +)))
324 324  
330 +(((
325 325  AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,
332 +)))
326 326  
334 +(((
327 327  mm: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
336 +)))
328 328  )))|(% style="width:190px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
329 329  
330 330  
331 -
332 332  === 3.3.3 Configure read commands for each sampling ===
333 333  
334 334  (((
... ... @@ -831,201 +831,377 @@
831 831  
832 832  
833 833  
842 +
834 834  ==== **RS485 command timeout** ====
835 835  
845 +(((
836 836  Some Modbus device has slow action to send replies. This command is used to configure the RS485-LN to use longer time to wait for their action.
847 +)))
837 837  
849 +(((
838 838  Default value: 0, range:  0 ~~ 65 seconds
851 +)))
839 839  
840 -* **AT Command:**
853 +* (((
854 +**AT Command:**
855 +)))
841 841  
842 842  (% class="box infomessage" %)
843 843  (((
859 +(((
844 844  **AT+CMDDLaa=hex(bb cc)*1000**
845 845  )))
862 +)))
846 846  
864 +(((
847 847  **Example:**
866 +)))
848 848  
868 +(((
849 849  **AT+CMDDL1=1000** to send the open time to 1000ms
870 +)))
850 850  
872 +(((
873 +
874 +)))
851 851  
852 -* **Downlink Payload:**
876 +* (((
877 +**Downlink Payload:**
878 +)))
853 853  
880 +(((
854 854  **0x AA aa bb cc**
882 +)))
855 855  
884 +(((
856 856  Same as: AT+CMDDLaa=hex(bb cc)*1000
886 +)))
857 857  
888 +(((
858 858   **Example:**
890 +)))
859 859  
892 +(((
860 860   0xAA 01 00 01  ~-~-> Same as **AT+CMDDL1=1000 ms**
894 +)))
861 861  
862 862  
863 863  
898 +
864 864  ==== **Uplink payload mode** ====
865 865  
901 +(((
866 866  Define to use one uplink or multiple uplinks for the sampling.
903 +)))
867 867  
905 +(((
868 868  The use of this command please see: [[Compose Uplink payload>>||anchor="H3.3.4Composetheuplinkpayload"]]
907 +)))
869 869  
870 -* **AT Command:**
909 +* (((
910 +**AT Command:**
911 +)))
871 871  
872 872  (% class="box infomessage" %)
873 873  (((
915 +(((
874 874  **AT+DATAUP=0**
875 875  )))
918 +)))
876 876  
877 877  (% class="box infomessage" %)
878 878  (((
922 +(((
879 879  **AT+DATAUP=1**
880 880  )))
925 +)))
881 881  
927 +(((
928 +
929 +)))
882 882  
883 -* **Downlink Payload:**
931 +* (((
932 +**Downlink Payload:**
933 +)))
884 884  
935 +(((
885 885  **0xAD 00**  **~-~->** Same as AT+DATAUP=0
937 +)))
886 886  
939 +(((
887 887  **0xAD 01**  **~-~->** Same as AT+DATAUP=1
941 +)))
888 888  
889 889  
890 890  
945 +
891 891  ==== **Manually trigger an Uplink** ====
892 892  
948 +(((
893 893  Ask device to send an uplink immediately.
950 +)))
894 894  
895 -* **AT Command:**
952 +* (((
953 +**AT Command:**
954 +)))
896 896  
956 +(((
897 897  No AT Command for this, user can press the [[ACT button>>||anchor="H3.7Buttons"]] for 1 second for the same.
958 +)))
898 898  
960 +(((
961 +
962 +)))
899 899  
900 -* **Downlink Payload:**
964 +* (((
965 +**Downlink Payload:**
966 +)))
901 901  
968 +(((
902 902  **0x08 FF**, RS485-LN will immediately send an uplink.
970 +)))
903 903  
904 904  
905 905  
974 +
906 906  ==== **Clear RS485 Command** ====
907 907  
977 +(((
908 908  The AT+COMMANDx and AT+DATACUTx settings are stored in special location, user can use below command to clear them.
979 +)))
909 909  
910 -* **AT Command:**
981 +* (((
982 +**AT Command:**
983 +)))
911 911  
985 +(((
912 912  **AT+CMDEAR=mm,nn**   mm: start position of erase ,nn: stop position of erase
987 +)))
913 913  
989 +(((
914 914  Etc. AT+CMDEAR=1,10 means erase AT+COMMAND1/AT+DATACUT1 to AT+COMMAND10/AT+DATACUT10
991 +)))
915 915  
993 +(((
916 916  Example screen shot after clear all RS485 commands. 
995 +)))
917 917  
997 +(((
998 +
999 +)))
918 918  
1001 +(((
919 919  The uplink screen shot is:
1003 +)))
920 920  
921 921  [[image:1654160691922-496.png]]
922 922  
923 923  
924 -* **Downlink Payload:**
1008 +* (((
1009 +**Downlink Payload:**
1010 +)))
925 925  
1012 +(((
926 926  **0x09 aa bb** same as AT+CMDEAR=aa,bb
1014 +)))
927 927  
928 928  
929 929  
1018 +
930 930  ==== **Set Serial Communication Parameters** ====
931 931  
1021 +(((
932 932  Set the Rs485 serial communication parameters:
1023 +)))
933 933  
934 -* **AT Command:**
1025 +* (((
1026 +**AT Command:**
1027 +)))
935 935  
1029 +(((
936 936  Set Baud Rate:
1031 +)))
937 937  
938 938  (% class="box infomessage" %)
939 939  (((
1035 +(((
940 940  **AT+BAUDR=9600**    ~/~/ Options: (1200,2400,4800,14400,19200,115200)
941 941  )))
1038 +)))
942 942  
1040 +(((
943 943  Set UART Parity
1042 +)))
944 944  
945 945  (% class="box infomessage" %)
946 946  (((
1046 +(((
947 947  **AT+PARITY=0**    ~/~/ Option: 0: no parity, 1: odd parity, 2: even parity
948 948  )))
1049 +)))
949 949  
1051 +(((
950 950  Set STOPBIT
1053 +)))
951 951  
952 952  (% class="box infomessage" %)
953 953  (((
1057 +(((
954 954  **AT+STOPBIT=0**    ~/~/ Option: 0 for 1bit; 1 for 1.5 bit ; 2 for 2 bits
955 955  )))
1060 +)))
956 956  
1062 +(((
1063 +
1064 +)))
957 957  
958 -* **Downlink Payload:**
1066 +* (((
1067 +**Downlink Payload:**
1068 +)))
959 959  
1070 +(((
960 960  **A7 01 aa bb**: Same  AT+BAUDR=hex(aa bb)*100
1072 +)))
961 961  
1074 +(((
962 962  **Example:**
1076 +)))
963 963  
964 -* A7 01 00 60   same as AT+BAUDR=9600
965 -* A7 01 04 80  same as AT+BAUDR=115200
1078 +* (((
1079 +A7 01 00 60   same as AT+BAUDR=9600
1080 +)))
1081 +* (((
1082 +A7 01 04 80  same as AT+BAUDR=115200
1083 +)))
966 966  
1085 +(((
967 967  A7 02 aa: Same as  AT+PARITY=aa  (aa value: 00 , 01 or 02)
1087 +)))
968 968  
1089 +(((
969 969  A7 03 aa: Same as  AT+STOPBIT=aa  (aa value: 00 , 01 or 02)
1091 +)))
970 970  
971 971  
1094 +
1095 +
972 972  == 3.6 Listening mode for RS485 network ==
973 973  
1098 +(((
974 974  This feature support since firmware v1.4
1100 +)))
975 975  
1102 +(((
976 976  RS485-LN supports listening mode, it can listen the RS485 network packets and send them via LoRaWAN uplink. Below is the structure. The blue arrow shows the RS485 network packets to RS485-LN.
1104 +)))
977 977  
978 978  [[image:image-20220602171200-8.png||height="567" width="1007"]]
979 979  
1108 +(((
980 980  To enable the listening mode, use can run the command AT+RXMODE.
1110 +)))
981 981  
1112 +(((
1113 +
1114 +)))
982 982  
983 -(% border="1" style="background-color:#ffffcc; width:500px" %)
984 -|=(% style="width: 161px;" %)**Command example:**|=(% style="width: 337px;" %)**Function**
985 -|(% style="width:161px" %)AT+RXMODE=1,10 |(% style="width:337px" %)Enable listening mode 1, if RS485-LN has received more than 10 RS485 commands from the network. RS485-LN will send these commands via LoRaWAN uplinks.
986 -|(% style="width:161px" %)AT+RXMODE=2,500|(% style="width:337px" %)Enable listening mode 2, RS485-LN will capture and send a 500ms content once from the first detect of character. Max value is 65535 ms
987 -|(% style="width:161px" %)AT+RXMODE=0,0|(% style="width:337px" %)Disable listening mode. This is the default settings.
988 -|(% style="width:161px" %) |(% style="width:337px" %)A6 aa bb cc  same as AT+RXMODE=aa,(bb<<8 ~| cc)
1116 +(% border="1" cellspacing="10" style="background-color:#ffffcc; width:500px" %)
1117 +|=(% style="width: 100px;" %)(((
1118 +**Command example**
1119 +)))|=(% style="width: 400px;" %)(((
1120 +**Function**
1121 +)))
1122 +|(% style="width:100px" %)(((
1123 +AT+RXMODE=1,10
1124 +)))|(% style="width:400px" %)(((
1125 +Enable listening mode 1, if RS485-LN has received more than 10 RS485 commands from the network. RS485-LN will send these commands via LoRaWAN uplinks.
1126 +)))
1127 +|(% style="width:100px" %)(((
1128 +AT+RXMODE=2,500
1129 +)))|(% style="width:400px" %)(((
1130 +Enable listening mode 2, RS485-LN will capture and send a 500ms content once from the first detect of character. Max value is 65535 ms
1131 +)))
1132 +|(% style="width:100px" %)(((
1133 +AT+RXMODE=0,0
1134 +)))|(% style="width:400px" %)(((
1135 +Disable listening mode. This is the default settings.
1136 +)))
1137 +|(% style="width:100px" %)(((
1138 +
1139 +)))|(% style="width:400px" %)(((
1140 +A6 aa bb cc  same as AT+RXMODE=aa,(bb<<8 | cc)
1141 +)))
989 989  
1143 +(((
990 990  **Downlink Command:**
1145 +)))
991 991  
1147 +(((
992 992  **0xA6 aa bb cc ** same as AT+RXMODE=aa,(bb<<8 | cc)
1149 +)))
993 993  
1151 +(((
1152 +
1153 +)))
994 994  
1155 +(((
995 995  **Example**:
1157 +)))
996 996  
1159 +(((
997 997  The RS485-LN is set to AT+RXMODE=2,1000
1161 +)))
998 998  
1163 +(((
999 999  There is a two Modbus commands in the RS485 network as below:
1165 +)))
1000 1000  
1167 +(((
1001 1001  The Modbus master send a command: (% style="background-color:#ffc000" %)01 03 00 00 00 02 c4 0b
1169 +)))
1002 1002  
1171 +(((
1003 1003  And Modbus slave reply with: (% style="background-color:green" %)01 03 04 00 00 00 00 fa 33
1173 +)))
1004 1004  
1175 +(((
1005 1005  RS485-LN will capture both and send the uplink: (% style="background-color:#ffc000" %)01 03 00 00 00 02 c4 0b  (% style="background-color:green" %)01 03 04 00 00 00 00 fa 33
1177 +)))
1006 1006  
1179 +(((
1007 1007  [[image:image-20220602171200-9.png]]
1181 +)))
1008 1008  
1183 +(((
1184 +
1185 +)))
1009 1009  
1187 +(((
1188 +(((
1010 1010  (% style="color:red" %)Notice: Listening mode can work with the default polling mode of RS485-LN. When RS485-LN is in to send the RS485 commands (from AT+COMMANDx), the listening mode will be interrupt for a while.
1190 +)))
1191 +)))
1011 1011  
1012 1012  
1013 1013  == 3.7 Buttons ==
1014 1014  
1015 1015  
1016 -(% border="1" style="background-color:#f7faff; width:500px" %)
1017 -|=**Button**|=(% style="width: 1420px;" %)**Feature**
1018 -|**ACT**|(% style="width:1420px" %)If RS485 joined in network, press this button for more than 1 second, RS485 will upload a packet, and the SYS LED will give a (% style="color:blue" %)**Blue blink**
1019 -|**RST**|(% style="width:1420px" %)Reboot RS485
1020 -|**PRO**|(% style="width:1420px" %)Use for upload image, see [[How to Update Image>>||anchor="H6.1Howtoupgradetheimage3F"]]
1197 +(% border="1" cellspacing="10" style="background-color:#f7faff; width:430px" %)
1198 +|=(% style="width: 50px;" %)**Button**|=(% style="width: 361px;" %)**Feature**
1199 +|(% style="width:50px" %)**ACT**|(% style="width:361px" %)If RS485 joined in network, press this button for more than 1 second, RS485 will upload a packet, and the SYS LED will give a (% style="color:blue" %)**Blue blink**
1200 +|(% style="width:50px" %)**RST**|(% style="width:361px" %)Reboot RS485
1201 +|(% style="width:50px" %)**PRO**|(% style="width:361px" %)Use for upload image, see [[How to Update Image>>||anchor="H6.1Howtoupgradetheimage3F"]]
1021 1021  
1203 +
1022 1022  == 3.8 LEDs ==
1023 1023  
1024 -(% border="1" style="background-color:#f7faff; width:500px" %)
1025 -|=**LEDs**|=**Feature**
1206 +
1207 +(% border="1" cellspacing="10" style="background-color:#f7faff; width:430px" %)
1208 +|=(% style="width: 50px;" %)**LEDs**|=(% style="width: 380px;" %)**Feature**
1026 1026  |**PWR**|Always on if there is power
1027 -|**SYS**|After device is powered on, the SYS will (% style="color:green" %)**fast blink in GREEN** (%%)for 5 times, means RS485-LN start to join LoRaWAN network. If join success, SYS will be (% style="color:green" %)**on GREEN for 5 seconds**(%%)**. **SYS will (% style="color:green" %)**blink Blue**(%%) on every upload and (% style="color:green" %)**blink Green**(%%) once receive a downlink message.
1210 +|**SYS**|After device is powered on, the SYS will (% style="color:green" %)**fast blink in GREEN**(%%) for 5 times, means RS485-LN start to join LoRaWAN network. If join success, SYS will be (% style="color:green" %)**on GREEN for 5 seconds** (%%)**. **SYS will (% style="color:green" %)**blink Blue**(%%) on every upload and (% style="color:green" %)**blink Green**(%%) once receive a downlink message.
1028 1028  
1212 +
1029 1029  = 4. Case Study =
1030 1030  
1031 1031  User can check this URL for some case studies: [[APP RS485 COMMUNICATE WITH SENSORS>>doc:Main.Application Note \: Communicate with Different Sensors ----- RS485-LN RS485-BL.WebHome]]
... ... @@ -1035,19 +1035,26 @@
1035 1035  
1036 1036  == 5.1 Access AT Command ==
1037 1037  
1222 +(((
1038 1038  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.
1224 +)))
1039 1039  
1040 1040  [[image:1654162355560-817.png]]
1041 1041  
1042 1042  
1229 +(((
1043 1043  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:
1231 +)))
1044 1044  
1045 1045  [[image:1654162368066-342.png]]
1046 1046  
1047 1047  
1236 +(((
1048 1048  More detail AT Command manual can be found at [[AT Command Manual>>https://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/]]
1238 +)))
1049 1049  
1050 1050  
1241 +
1051 1051  == 5.2 Common AT Command Sequence ==
1052 1052  
1053 1053  === 5.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
... ... @@ -1070,7 +1070,9 @@
1070 1070  )))
1071 1071  
1072 1072  
1264 +(((
1073 1073  If device already joined network:
1266 +)))
1074 1074  
1075 1075  (% class="box infomessage" %)
1076 1076  (((
... ... @@ -1109,10 +1109,12 @@
1109 1109  
1110 1110  (% style="color:red" %)**Note:**
1111 1111  
1305 +(((
1112 1112  (% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server.
1113 1113  2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
1114 1114  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.
1115 1115  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
1310 +)))
1116 1116  
1117 1117  [[image:1654162478620-421.png]]
1118 1118  
... ... @@ -1121,25 +1121,45 @@
1121 1121  
1122 1122  == 6.1 How to upgrade the image? ==
1123 1123  
1319 +(((
1124 1124  The RS485-LN LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to RS485-LN to:
1321 +)))
1125 1125  
1126 -* Support new features
1127 -* For bug fix
1128 -* Change LoRaWAN bands.
1323 +* (((
1324 +Support new features
1325 +)))
1326 +* (((
1327 +For bug fix
1328 +)))
1329 +* (((
1330 +Change LoRaWAN bands.
1331 +)))
1129 1129  
1333 +(((
1130 1130  Below shows the hardware connection for how to upload an image to RS485-LN:
1335 +)))
1131 1131  
1132 1132  [[image:1654162535040-878.png]]
1133 1133  
1339 +(((
1134 1134  **Step1:** Download [[flash loader>>url:https://www.st.com/content/st_com/en/products/development-tools/software-development-tools/stm32-software-development-tools/stm32-programmers/flasher-stm32.html]].
1341 +)))
1135 1135  
1343 +(((
1136 1136  **Step2**: Download the [[LT Image files>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]].
1345 +)))
1137 1137  
1347 +(((
1138 1138  **Step3: **Open flashloader; choose the correct COM port to update.
1349 +)))
1139 1139  
1140 1140  (((
1352 +(((
1353 +(((
1141 1141  (% style="color:blue" %) Hold down the PRO button and then momentarily press the RST reset button and the SYS led will change from OFF to ON, While SYS LED is RED ON, it means the RS485-LN is ready to be program.
1142 1142  )))
1356 +)))
1357 +)))
1143 1143  
1144 1144  
1145 1145  [[image:image-20220602175818-12.png]]
... ... @@ -1202,7 +1202,6 @@
1202 1202  * (% style="color:blue" %)**RU864**(%%): frequency bands RU864
1203 1203  * (% style="color:blue" %)**KZ865**(%%): frequency bands KZ865
1204 1204  
1205 -
1206 1206  = 9.Packing Info =
1207 1207  
1208 1208  
... ... @@ -1219,7 +1219,6 @@
1219 1219  * Package Size / pcs : 14.5 x 8 x 5 cm
1220 1220  * Weight / pcs : 170g
1221 1221  
1222 -
1223 1223  = 10. FCC Caution for RS485LN-US915 =
1224 1224  
1225 1225  (((

Applications

Navigation

Copyright ©2010-2024 Dragino Technology Co., LTD. All rights reserved
Dragino Wiki v2.0