<
From version < 58.9 >
edited by Xiaoling
on 2022/06/06 11:22
To version < 58.26 >
edited by Xiaoling
on 2022/06/06 11:27
>
Change comment: There is no comment for this version

Summary

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Content
... ... @@ -831,201 +831,376 @@
831 831  
832 832  
833 833  
834 +
834 834  ==== **RS485 command timeout** ====
835 835  
837 +(((
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.
839 +)))
837 837  
841 +(((
838 838  Default value: 0, range:  0 ~~ 65 seconds
843 +)))
839 839  
840 -* **AT Command:**
845 +* (((
846 +**AT Command:**
847 +)))
841 841  
842 842  (% class="box infomessage" %)
843 843  (((
851 +(((
844 844  **AT+CMDDLaa=hex(bb cc)*1000**
845 845  )))
854 +)))
846 846  
856 +(((
847 847  **Example:**
858 +)))
848 848  
860 +(((
849 849  **AT+CMDDL1=1000** to send the open time to 1000ms
862 +)))
850 850  
864 +(((
865 +
866 +)))
851 851  
852 -* **Downlink Payload:**
868 +* (((
869 +**Downlink Payload:**
870 +)))
853 853  
872 +(((
854 854  **0x AA aa bb cc**
874 +)))
855 855  
876 +(((
856 856  Same as: AT+CMDDLaa=hex(bb cc)*1000
878 +)))
857 857  
880 +(((
858 858   **Example:**
882 +)))
859 859  
884 +(((
860 860   0xAA 01 00 01  ~-~-> Same as **AT+CMDDL1=1000 ms**
886 +)))
861 861  
862 862  
863 863  
890 +
864 864  ==== **Uplink payload mode** ====
865 865  
893 +(((
866 866  Define to use one uplink or multiple uplinks for the sampling.
895 +)))
867 867  
897 +(((
868 868  The use of this command please see: [[Compose Uplink payload>>||anchor="H3.3.4Composetheuplinkpayload"]]
899 +)))
869 869  
870 -* **AT Command:**
901 +* (((
902 +**AT Command:**
903 +)))
871 871  
872 872  (% class="box infomessage" %)
873 873  (((
907 +(((
874 874  **AT+DATAUP=0**
875 875  )))
910 +)))
876 876  
877 877  (% class="box infomessage" %)
878 878  (((
914 +(((
879 879  **AT+DATAUP=1**
880 880  )))
917 +)))
881 881  
919 +(((
920 +
921 +)))
882 882  
883 -* **Downlink Payload:**
923 +* (((
924 +**Downlink Payload:**
925 +)))
884 884  
927 +(((
885 885  **0xAD 00**  **~-~->** Same as AT+DATAUP=0
929 +)))
886 886  
931 +(((
887 887  **0xAD 01**  **~-~->** Same as AT+DATAUP=1
933 +)))
888 888  
889 889  
890 890  
937 +
891 891  ==== **Manually trigger an Uplink** ====
892 892  
940 +(((
893 893  Ask device to send an uplink immediately.
942 +)))
894 894  
895 -* **AT Command:**
944 +* (((
945 +**AT Command:**
946 +)))
896 896  
948 +(((
897 897  No AT Command for this, user can press the [[ACT button>>||anchor="H3.7Buttons"]] for 1 second for the same.
950 +)))
898 898  
952 +(((
953 +
954 +)))
899 899  
900 -* **Downlink Payload:**
956 +* (((
957 +**Downlink Payload:**
958 +)))
901 901  
960 +(((
902 902  **0x08 FF**, RS485-LN will immediately send an uplink.
962 +)))
903 903  
904 904  
905 905  
966 +
906 906  ==== **Clear RS485 Command** ====
907 907  
969 +(((
908 908  The AT+COMMANDx and AT+DATACUTx settings are stored in special location, user can use below command to clear them.
971 +)))
909 909  
910 -* **AT Command:**
973 +* (((
974 +**AT Command:**
975 +)))
911 911  
977 +(((
912 912  **AT+CMDEAR=mm,nn**   mm: start position of erase ,nn: stop position of erase
979 +)))
913 913  
981 +(((
914 914  Etc. AT+CMDEAR=1,10 means erase AT+COMMAND1/AT+DATACUT1 to AT+COMMAND10/AT+DATACUT10
983 +)))
915 915  
985 +(((
916 916  Example screen shot after clear all RS485 commands. 
987 +)))
917 917  
989 +(((
990 +
991 +)))
918 918  
993 +(((
919 919  The uplink screen shot is:
995 +)))
920 920  
921 921  [[image:1654160691922-496.png]]
922 922  
923 923  
924 -* **Downlink Payload:**
1000 +* (((
1001 +**Downlink Payload:**
1002 +)))
925 925  
1004 +(((
926 926  **0x09 aa bb** same as AT+CMDEAR=aa,bb
1006 +)))
927 927  
928 928  
929 929  
1010 +
930 930  ==== **Set Serial Communication Parameters** ====
931 931  
1013 +(((
932 932  Set the Rs485 serial communication parameters:
1015 +)))
933 933  
934 -* **AT Command:**
1017 +* (((
1018 +**AT Command:**
1019 +)))
935 935  
1021 +(((
936 936  Set Baud Rate:
1023 +)))
937 937  
938 938  (% class="box infomessage" %)
939 939  (((
1027 +(((
940 940  **AT+BAUDR=9600**    ~/~/ Options: (1200,2400,4800,14400,19200,115200)
941 941  )))
1030 +)))
942 942  
1032 +(((
943 943  Set UART Parity
1034 +)))
944 944  
945 945  (% class="box infomessage" %)
946 946  (((
1038 +(((
947 947  **AT+PARITY=0**    ~/~/ Option: 0: no parity, 1: odd parity, 2: even parity
948 948  )))
1041 +)))
949 949  
1043 +(((
950 950  Set STOPBIT
1045 +)))
951 951  
952 952  (% class="box infomessage" %)
953 953  (((
1049 +(((
954 954  **AT+STOPBIT=0**    ~/~/ Option: 0 for 1bit; 1 for 1.5 bit ; 2 for 2 bits
955 955  )))
1052 +)))
956 956  
1054 +(((
1055 +
1056 +)))
957 957  
958 -* **Downlink Payload:**
1058 +* (((
1059 +**Downlink Payload:**
1060 +)))
959 959  
1062 +(((
960 960  **A7 01 aa bb**: Same  AT+BAUDR=hex(aa bb)*100
1064 +)))
961 961  
1066 +(((
962 962  **Example:**
1068 +)))
963 963  
964 -* A7 01 00 60   same as AT+BAUDR=9600
965 -* A7 01 04 80  same as AT+BAUDR=115200
1070 +* (((
1071 +A7 01 00 60   same as AT+BAUDR=9600
1072 +)))
1073 +* (((
1074 +A7 01 04 80  same as AT+BAUDR=115200
1075 +)))
966 966  
1077 +(((
967 967  A7 02 aa: Same as  AT+PARITY=aa  (aa value: 00 , 01 or 02)
1079 +)))
968 968  
1081 +(((
969 969  A7 03 aa: Same as  AT+STOPBIT=aa  (aa value: 00 , 01 or 02)
1083 +)))
970 970  
971 971  
1086 +
1087 +
972 972  == 3.6 Listening mode for RS485 network ==
973 973  
1090 +(((
974 974  This feature support since firmware v1.4
1092 +)))
975 975  
1094 +(((
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.
1096 +)))
977 977  
978 978  [[image:image-20220602171200-8.png||height="567" width="1007"]]
979 979  
1100 +(((
980 980  To enable the listening mode, use can run the command AT+RXMODE.
1102 +)))
981 981  
1104 +(((
1105 +
1106 +)))
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)
1108 +(% border="1" cellspacing="10" style="background-color:#ffffcc; width:500px" %)
1109 +|=(% style="width: 161px;" %)(((
1110 +**Command example:**
1111 +)))|=(% style="width: 337px;" %)(((
1112 +**Function**
1113 +)))
1114 +|(% style="width:161px" %)(((
1115 +AT+RXMODE=1,10
1116 +)))|(% style="width:337px" %)(((
1117 +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.
1118 +)))
1119 +|(% style="width:161px" %)(((
1120 +AT+RXMODE=2,500
1121 +)))|(% style="width:337px" %)(((
1122 +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
1123 +)))
1124 +|(% style="width:161px" %)(((
1125 +AT+RXMODE=0,0
1126 +)))|(% style="width:337px" %)(((
1127 +Disable listening mode. This is the default settings.
1128 +)))
1129 +|(% style="width:161px" %)(((
1130 +
1131 +)))|(% style="width:337px" %)(((
1132 +A6 aa bb cc  same as AT+RXMODE=aa,(bb<<8 | cc)
1133 +)))
989 989  
1135 +(((
990 990  **Downlink Command:**
1137 +)))
991 991  
1139 +(((
992 992  **0xA6 aa bb cc ** same as AT+RXMODE=aa,(bb<<8 | cc)
1141 +)))
993 993  
1143 +(((
1144 +
1145 +)))
994 994  
1147 +(((
995 995  **Example**:
1149 +)))
996 996  
1151 +(((
997 997  The RS485-LN is set to AT+RXMODE=2,1000
1153 +)))
998 998  
1155 +(((
999 999  There is a two Modbus commands in the RS485 network as below:
1157 +)))
1000 1000  
1159 +(((
1001 1001  The Modbus master send a command: (% style="background-color:#ffc000" %)01 03 00 00 00 02 c4 0b
1161 +)))
1002 1002  
1163 +(((
1003 1003  And Modbus slave reply with: (% style="background-color:green" %)01 03 04 00 00 00 00 fa 33
1165 +)))
1004 1004  
1167 +(((
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
1169 +)))
1006 1006  
1171 +(((
1007 1007  [[image:image-20220602171200-9.png]]
1173 +)))
1008 1008  
1175 +(((
1176 +
1177 +)))
1009 1009  
1179 +(((
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.
1181 +)))
1011 1011  
1012 1012  
1013 1013  == 3.7 Buttons ==
1014 1014  
1015 1015  
1016 -(% border="1" style="background-color:#f7faff; width:500px" %)
1187 +(% border="1" cellspacing="10" style="background-color:#f7faff; width:500px" %)
1017 1017  |=**Button**|=(% style="width: 1420px;" %)**Feature**
1018 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 1019  |**RST**|(% style="width:1420px" %)Reboot RS485
1020 1020  |**PRO**|(% style="width:1420px" %)Use for upload image, see [[How to Update Image>>||anchor="H6.1Howtoupgradetheimage3F"]]
1021 1021  
1193 +
1194 +
1022 1022  == 3.8 LEDs ==
1023 1023  
1024 -(% border="1" style="background-color:#f7faff; width:500px" %)
1197 +(% border="1" cellspacing="10" style="background-color:#f7faff; width:500px" %)
1025 1025  |=**LEDs**|=**Feature**
1026 1026  |**PWR**|Always on if there is power
1027 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.
1028 1028  
1202 +
1203 +
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]]
... ... @@ -1035,17 +1035,23 @@
1035 1035  
1036 1036  == 5.1 Access AT Command ==
1037 1037  
1213 +(((
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.
1215 +)))
1039 1039  
1040 1040  [[image:1654162355560-817.png]]
1041 1041  
1042 1042  
1220 +(((
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:
1222 +)))
1044 1044  
1045 1045  [[image:1654162368066-342.png]]
1046 1046  
1047 1047  
1227 +(((
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/]]
1229 +)))
1049 1049  
1050 1050  
1051 1051  == 5.2 Common AT Command Sequence ==
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