Last modified by Bei Jinggeng on 2025/01/16 11:36
<
From version < 58.4 >
edited by Xiaoling
on 2022/06/06 11:21
To version < 58.27 >
edited by Xiaoling
on 2022/06/06 11:27
>
Change comment: There is no comment for this version

Summary

Details

Page properties
Content
... ... @@ -548,6 +548,7 @@
548 548  
549 549  
550 550  
551 +
551 551  ==== **RS485 Debug Command** ====
552 552  
553 553  (((
... ... @@ -668,85 +668,161 @@
668 668  
669 669  
670 670  
672 +
671 671  ==== **Set Payload version** ====
672 672  
675 +(((
673 673  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.
677 +)))
674 674  
675 -* **AT Command:**
679 +* (((
680 +**AT Command:**
681 +)))
676 676  
677 677  (% class="box infomessage" %)
678 678  (((
685 +(((
679 679  **AT+PAYVER: Set PAYVER field = 1**
680 680  )))
688 +)))
681 681  
682 -* **Downlink Payload:**
690 +* (((
691 +**Downlink Payload:**
692 +)))
683 683  
694 +(((
684 684  **0xAE 01**  ~-~-> Set PAYVER field =  0x01
696 +)))
685 685  
698 +(((
686 686  **0xAE 0F**   ~-~-> Set PAYVER field =  0x0F
700 +)))
687 687  
688 688  
689 689  
704 +
690 690  ==== **Set RS485 Sampling Commands** ====
691 691  
707 +(((
692 692  AT+COMMANDx or AT+DATACUTx
709 +)))
693 693  
711 +(((
694 694  These three commands are used to configure how the RS485-LN polling data from Modbus device. Detail of usage please see : [[polling RS485 device>>||anchor="H3.3.3Configurereadcommandsforeachsampling"]].
713 +)))
695 695  
715 +(((
716 +
717 +)))
696 696  
697 -* **AT Command:**
719 +* (((
720 +**AT Command:**
721 +)))
698 698  
699 699  (% class="box infomessage" %)
700 700  (((
725 +(((
701 701  **AT+COMMANDx: Configure RS485 read command to sensor.**
702 702  )))
728 +)))
703 703  
704 704  (% class="box infomessage" %)
705 705  (((
732 +(((
706 706  **AT+DATACUTx: Configure how to handle return from RS485 devices.**
707 707  )))
735 +)))
708 708  
737 +(((
738 +
739 +)))
709 709  
710 -* **Downlink Payload:**
741 +* (((
742 +**Downlink Payload:**
743 +)))
711 711  
745 +(((
712 712  **0xAF** downlink command can be used to set AT+COMMANDx or AT+DATACUTx.
747 +)))
713 713  
749 +(((
714 714  (% style="color:red" %)**Note**(%%): if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.
751 +)))
715 715  
753 +(((
716 716  Format: AF MM NN LL XX XX XX XX YY
755 +)))
717 717  
757 +(((
718 718  Where:
759 +)))
719 719  
720 -* MM: the ATCOMMAND or AT+DATACUT to be set. Value from 01 ~~ 0F,
721 -* NN:  0: no CRC; 1: add CRC-16/MODBUS ; 2: set the AT+DATACUT value.
722 -* LL:  The length of AT+COMMAND or AT+DATACUT command
723 -* XX XX XX XX: AT+COMMAND or AT+DATACUT command
724 -* YY:  If YY=0, RS485-BL will execute the downlink command without uplink; if YY=1, RS485-LN will execute an uplink after got this command.
761 +* (((
762 +MM: the ATCOMMAND or AT+DATACUT to be set. Value from 01 ~~ 0F,
763 +)))
764 +* (((
765 +NN:  0: no CRC; 1: add CRC-16/MODBUS ; 2: set the AT+DATACUT value.
766 +)))
767 +* (((
768 +LL:  The length of AT+COMMAND or AT+DATACUT command
769 +)))
770 +* (((
771 +XX XX XX XX: AT+COMMAND or AT+DATACUT command
772 +)))
773 +* (((
774 +YY:  If YY=0, RS485-BL will execute the downlink command without uplink; if YY=1, RS485-LN will execute an uplink after got this command.
775 +)))
725 725  
777 +(((
726 726  **Example:**
779 +)))
727 727  
781 +(((
728 728  (% style="color:#037691" %)**AF 03 01 06 0A 05 00 04 00 01 00**(%%): Same as AT+COMMAND3=0A 05 00 04 00 01,1
783 +)))
729 729  
785 +(((
730 730  (% style="color:#037691" %)**AF 03 02 06**(% style="color:orange" %)** 10 **(% style="color:red" %)**01 **(% style="color:green" %)**05 06 09 0A**(% style="color:#037691" %)** 00**(%%): Same as AT+DATACUT3=(% style="color:orange" %)**16**(%%),(% style="color:red" %)**1**(%%),(% style="color:green" %)**5+6+9+10**
787 +)))
731 731  
789 +(((
732 732  (% style="color:#037691" %)**AF 03 02 06 **(% style="color:orange" %)**0B**(% style="color:red" %)** 02 **(% style="color:green" %)**05 07 08 0A **(% style="color:#037691" %)**00**(%%): Same as AT+DATACUT3=(% style="color:orange" %)**11**(%%),(% style="color:red" %)**2**(%%),(% style="color:green" %)**5~~7+8~~10**
791 +)))
733 733  
734 734  
735 735  
795 +
736 736  ==== **Fast command to handle MODBUS device** ====
737 737  
798 +(((
738 738  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]].
800 +)))
739 739  
802 +(((
740 740  This command is valid since v1.3 firmware version
804 +)))
741 741  
806 +(((
742 742  AT+MBFUN can auto read the Modbus function code: 01, 02, 03 or 04. AT+MBFUN has lower priority vs AT+DATACUT command. If AT+DATACUT command is configured, AT+MBFUN will be ignore.
808 +)))
743 743  
810 +(((
811 +
812 +)))
744 744  
814 +(((
745 745  **Example:**
816 +)))
746 746  
747 -* AT+MBFUN=1 and AT+DATACUT1/AT+DATACUT2 are not configure (0,0,0). So RS485-LN.
748 -* AT+COMMAND1= 01 03 00 10 00 08,1 ~-~-> read slave address 01 , function code 03, start address 00 01, quantity of registers 00 08.
749 -* AT+COMMAND2= 01 02 00 40 00 10,1 ~-~-> read slave address 01 , function code 02, start address 00 40, quantity of inputs 00 10.
818 +* (((
819 +AT+MBFUN=1 and AT+DATACUT1/AT+DATACUT2 are not configure (0,0,0). So RS485-LN.
820 +)))
821 +* (((
822 +AT+COMMAND1= 01 03 00 10 00 08,1 ~-~-> read slave address 01 , function code 03, start address 00 01, quantity of registers 00 08.
823 +)))
824 +* (((
825 +AT+COMMAND2= 01 02 00 40 00 10,1 ~-~-> read slave address 01 , function code 02, start address 00 40, quantity of inputs 00 10.
826 +)))
750 750  
751 751  [[image:image-20220602165351-6.png]]
752 752  
... ... @@ -754,201 +754,376 @@
754 754  
755 755  
756 756  
834 +
757 757  ==== **RS485 command timeout** ====
758 758  
837 +(((
759 759  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 +)))
760 760  
841 +(((
761 761  Default value: 0, range:  0 ~~ 65 seconds
843 +)))
762 762  
763 -* **AT Command:**
845 +* (((
846 +**AT Command:**
847 +)))
764 764  
765 765  (% class="box infomessage" %)
766 766  (((
851 +(((
767 767  **AT+CMDDLaa=hex(bb cc)*1000**
768 768  )))
854 +)))
769 769  
856 +(((
770 770  **Example:**
858 +)))
771 771  
860 +(((
772 772  **AT+CMDDL1=1000** to send the open time to 1000ms
862 +)))
773 773  
864 +(((
865 +
866 +)))
774 774  
775 -* **Downlink Payload:**
868 +* (((
869 +**Downlink Payload:**
870 +)))
776 776  
872 +(((
777 777  **0x AA aa bb cc**
874 +)))
778 778  
876 +(((
779 779  Same as: AT+CMDDLaa=hex(bb cc)*1000
878 +)))
780 780  
880 +(((
781 781   **Example:**
882 +)))
782 782  
884 +(((
783 783   0xAA 01 00 01  ~-~-> Same as **AT+CMDDL1=1000 ms**
886 +)))
784 784  
785 785  
786 786  
890 +
787 787  ==== **Uplink payload mode** ====
788 788  
893 +(((
789 789  Define to use one uplink or multiple uplinks for the sampling.
895 +)))
790 790  
897 +(((
791 791  The use of this command please see: [[Compose Uplink payload>>||anchor="H3.3.4Composetheuplinkpayload"]]
899 +)))
792 792  
793 -* **AT Command:**
901 +* (((
902 +**AT Command:**
903 +)))
794 794  
795 795  (% class="box infomessage" %)
796 796  (((
907 +(((
797 797  **AT+DATAUP=0**
798 798  )))
910 +)))
799 799  
800 800  (% class="box infomessage" %)
801 801  (((
914 +(((
802 802  **AT+DATAUP=1**
803 803  )))
917 +)))
804 804  
919 +(((
920 +
921 +)))
805 805  
806 -* **Downlink Payload:**
923 +* (((
924 +**Downlink Payload:**
925 +)))
807 807  
927 +(((
808 808  **0xAD 00**  **~-~->** Same as AT+DATAUP=0
929 +)))
809 809  
931 +(((
810 810  **0xAD 01**  **~-~->** Same as AT+DATAUP=1
933 +)))
811 811  
812 812  
813 813  
937 +
814 814  ==== **Manually trigger an Uplink** ====
815 815  
940 +(((
816 816  Ask device to send an uplink immediately.
942 +)))
817 817  
818 -* **AT Command:**
944 +* (((
945 +**AT Command:**
946 +)))
819 819  
948 +(((
820 820  No AT Command for this, user can press the [[ACT button>>||anchor="H3.7Buttons"]] for 1 second for the same.
950 +)))
821 821  
952 +(((
953 +
954 +)))
822 822  
823 -* **Downlink Payload:**
956 +* (((
957 +**Downlink Payload:**
958 +)))
824 824  
960 +(((
825 825  **0x08 FF**, RS485-LN will immediately send an uplink.
962 +)))
826 826  
827 827  
828 828  
966 +
829 829  ==== **Clear RS485 Command** ====
830 830  
969 +(((
831 831  The AT+COMMANDx and AT+DATACUTx settings are stored in special location, user can use below command to clear them.
971 +)))
832 832  
833 -* **AT Command:**
973 +* (((
974 +**AT Command:**
975 +)))
834 834  
977 +(((
835 835  **AT+CMDEAR=mm,nn**   mm: start position of erase ,nn: stop position of erase
979 +)))
836 836  
981 +(((
837 837  Etc. AT+CMDEAR=1,10 means erase AT+COMMAND1/AT+DATACUT1 to AT+COMMAND10/AT+DATACUT10
983 +)))
838 838  
985 +(((
839 839  Example screen shot after clear all RS485 commands. 
987 +)))
840 840  
989 +(((
990 +
991 +)))
841 841  
993 +(((
842 842  The uplink screen shot is:
995 +)))
843 843  
844 844  [[image:1654160691922-496.png]]
845 845  
846 846  
847 -* **Downlink Payload:**
1000 +* (((
1001 +**Downlink Payload:**
1002 +)))
848 848  
1004 +(((
849 849  **0x09 aa bb** same as AT+CMDEAR=aa,bb
1006 +)))
850 850  
851 851  
852 852  
1010 +
853 853  ==== **Set Serial Communication Parameters** ====
854 854  
1013 +(((
855 855  Set the Rs485 serial communication parameters:
1015 +)))
856 856  
857 -* **AT Command:**
1017 +* (((
1018 +**AT Command:**
1019 +)))
858 858  
1021 +(((
859 859  Set Baud Rate:
1023 +)))
860 860  
861 861  (% class="box infomessage" %)
862 862  (((
1027 +(((
863 863  **AT+BAUDR=9600**    ~/~/ Options: (1200,2400,4800,14400,19200,115200)
864 864  )))
1030 +)))
865 865  
1032 +(((
866 866  Set UART Parity
1034 +)))
867 867  
868 868  (% class="box infomessage" %)
869 869  (((
1038 +(((
870 870  **AT+PARITY=0**    ~/~/ Option: 0: no parity, 1: odd parity, 2: even parity
871 871  )))
1041 +)))
872 872  
1043 +(((
873 873  Set STOPBIT
1045 +)))
874 874  
875 875  (% class="box infomessage" %)
876 876  (((
1049 +(((
877 877  **AT+STOPBIT=0**    ~/~/ Option: 0 for 1bit; 1 for 1.5 bit ; 2 for 2 bits
878 878  )))
1052 +)))
879 879  
1054 +(((
1055 +
1056 +)))
880 880  
881 -* **Downlink Payload:**
1058 +* (((
1059 +**Downlink Payload:**
1060 +)))
882 882  
1062 +(((
883 883  **A7 01 aa bb**: Same  AT+BAUDR=hex(aa bb)*100
1064 +)))
884 884  
1066 +(((
885 885  **Example:**
1068 +)))
886 886  
887 -* A7 01 00 60   same as AT+BAUDR=9600
888 -* 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 +)))
889 889  
1077 +(((
890 890  A7 02 aa: Same as  AT+PARITY=aa  (aa value: 00 , 01 or 02)
1079 +)))
891 891  
1081 +(((
892 892  A7 03 aa: Same as  AT+STOPBIT=aa  (aa value: 00 , 01 or 02)
1083 +)))
893 893  
894 894  
1086 +
1087 +
895 895  == 3.6 Listening mode for RS485 network ==
896 896  
1090 +(((
897 897  This feature support since firmware v1.4
1092 +)))
898 898  
1094 +(((
899 899  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 +)))
900 900  
901 901  [[image:image-20220602171200-8.png||height="567" width="1007"]]
902 902  
1100 +(((
903 903  To enable the listening mode, use can run the command AT+RXMODE.
1102 +)))
904 904  
1104 +(((
1105 +
1106 +)))
905 905  
906 -(% border="1" style="background-color:#ffffcc; width:500px" %)
907 -|=(% style="width: 161px;" %)**Command example:**|=(% style="width: 337px;" %)**Function**
908 -|(% 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.
909 -|(% 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
910 -|(% style="width:161px" %)AT+RXMODE=0,0|(% style="width:337px" %)Disable listening mode. This is the default settings.
911 -|(% 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 +)))
912 912  
1135 +(((
913 913  **Downlink Command:**
1137 +)))
914 914  
1139 +(((
915 915  **0xA6 aa bb cc ** same as AT+RXMODE=aa,(bb<<8 | cc)
1141 +)))
916 916  
1143 +(((
1144 +
1145 +)))
917 917  
1147 +(((
918 918  **Example**:
1149 +)))
919 919  
1151 +(((
920 920  The RS485-LN is set to AT+RXMODE=2,1000
1153 +)))
921 921  
1155 +(((
922 922  There is a two Modbus commands in the RS485 network as below:
1157 +)))
923 923  
1159 +(((
924 924  The Modbus master send a command: (% style="background-color:#ffc000" %)01 03 00 00 00 02 c4 0b
1161 +)))
925 925  
1163 +(((
926 926  And Modbus slave reply with: (% style="background-color:green" %)01 03 04 00 00 00 00 fa 33
1165 +)))
927 927  
1167 +(((
928 928  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 +)))
929 929  
1171 +(((
930 930  [[image:image-20220602171200-9.png]]
1173 +)))
931 931  
1175 +(((
1176 +
1177 +)))
932 932  
1179 +(((
933 933  (% 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 +)))
934 934  
935 935  
936 936  == 3.7 Buttons ==
937 937  
938 938  
939 -(% border="1" style="background-color:#f7faff; width:500px" %)
1187 +(% border="1" cellspacing="10" style="background-color:#f7faff; width:500px" %)
940 940  |=**Button**|=(% style="width: 1420px;" %)**Feature**
941 941  |**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**
942 942  |**RST**|(% style="width:1420px" %)Reboot RS485
943 943  |**PRO**|(% style="width:1420px" %)Use for upload image, see [[How to Update Image>>||anchor="H6.1Howtoupgradetheimage3F"]]
944 944  
1193 +
1194 +
945 945  == 3.8 LEDs ==
946 946  
947 -(% border="1" style="background-color:#f7faff; width:500px" %)
1197 +(% border="1" cellspacing="10" style="background-color:#f7faff; width:500px" %)
948 948  |=**LEDs**|=**Feature**
949 949  |**PWR**|Always on if there is power
950 950  |**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.
951 951  
1202 +
1203 +
952 952  = 4. Case Study =
953 953  
954 954  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]]
... ... @@ -958,19 +958,26 @@
958 958  
959 959  == 5.1 Access AT Command ==
960 960  
1213 +(((
961 961  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 +)))
962 962  
963 963  [[image:1654162355560-817.png]]
964 964  
965 965  
1220 +(((
966 966  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 +)))
967 967  
968 968  [[image:1654162368066-342.png]]
969 969  
970 970  
1227 +(((
971 971  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 +)))
972 972  
973 973  
1232 +
974 974  == 5.2 Common AT Command Sequence ==
975 975  
976 976  === 5.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===

Applications

Navigation

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