Last modified by Bei Jinggeng on 2025/01/16 11:36
<
From version < 58.7 >
edited by Xiaoling
on 2022/06/06 11:22
To version < 58.36 >
edited by Xiaoling
on 2022/06/06 11:52
>
Change comment: There is no comment for this version

Summary

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Content
... ... @@ -103,7 +103,6 @@
103 103  * Support Modbus protocol
104 104  * Support Interrupt uplink (Since hardware version v1.2)
105 105  
106 -
107 107  == 1.4 Applications ==
108 108  
109 109  * Smart Buildings & Home Automation
... ... @@ -113,7 +113,6 @@
113 113  * Smart Cities
114 114  * Smart Factory
115 115  
116 -
117 117  == 1.5 Firmware Change log ==
118 118  
119 119  [[RS485-LN Image files – Download link and Change log>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/]]
... ... @@ -307,8 +307,6 @@
307 307  )))
308 308  )))
309 309  
310 -
311 -
312 312  === 3.3.2 Configure sensors ===
313 313  
314 314  (((
... ... @@ -327,8 +327,6 @@
327 327  mm: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
328 328  )))|(% style="width:190px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
329 329  
330 -
331 -
332 332  === 3.3.3 Configure read commands for each sampling ===
333 333  
334 334  (((
... ... @@ -704,64 +704,126 @@
704 704  
705 705  ==== **Set RS485 Sampling Commands** ====
706 706  
701 +(((
707 707  AT+COMMANDx or AT+DATACUTx
703 +)))
708 708  
705 +(((
709 709  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"]].
707 +)))
710 710  
709 +(((
710 +
711 +)))
711 711  
712 -* **AT Command:**
713 +* (((
714 +**AT Command:**
715 +)))
713 713  
714 714  (% class="box infomessage" %)
715 715  (((
719 +(((
716 716  **AT+COMMANDx: Configure RS485 read command to sensor.**
717 717  )))
722 +)))
718 718  
719 719  (% class="box infomessage" %)
720 720  (((
726 +(((
721 721  **AT+DATACUTx: Configure how to handle return from RS485 devices.**
722 722  )))
729 +)))
723 723  
731 +(((
732 +
733 +)))
724 724  
725 -* **Downlink Payload:**
735 +* (((
736 +**Downlink Payload:**
737 +)))
726 726  
739 +(((
727 727  **0xAF** downlink command can be used to set AT+COMMANDx or AT+DATACUTx.
741 +)))
728 728  
743 +(((
729 729  (% style="color:red" %)**Note**(%%): if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.
745 +)))
730 730  
747 +(((
731 731  Format: AF MM NN LL XX XX XX XX YY
749 +)))
732 732  
751 +(((
733 733  Where:
753 +)))
734 734  
735 -* MM: the ATCOMMAND or AT+DATACUT to be set. Value from 01 ~~ 0F,
736 -* NN:  0: no CRC; 1: add CRC-16/MODBUS ; 2: set the AT+DATACUT value.
737 -* LL:  The length of AT+COMMAND or AT+DATACUT command
738 -* XX XX XX XX: AT+COMMAND or AT+DATACUT command
739 -* 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.
755 +* (((
756 +MM: the ATCOMMAND or AT+DATACUT to be set. Value from 01 ~~ 0F,
757 +)))
758 +* (((
759 +NN:  0: no CRC; 1: add CRC-16/MODBUS ; 2: set the AT+DATACUT value.
760 +)))
761 +* (((
762 +LL:  The length of AT+COMMAND or AT+DATACUT command
763 +)))
764 +* (((
765 +XX XX XX XX: AT+COMMAND or AT+DATACUT command
766 +)))
767 +* (((
768 +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.
769 +)))
740 740  
771 +(((
741 741  **Example:**
773 +)))
742 742  
775 +(((
743 743  (% 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
777 +)))
744 744  
779 +(((
745 745  (% 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**
781 +)))
746 746  
783 +(((
747 747  (% 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**
785 +)))
748 748  
749 749  
750 750  
789 +
751 751  ==== **Fast command to handle MODBUS device** ====
752 752  
792 +(((
753 753  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]].
794 +)))
754 754  
796 +(((
755 755  This command is valid since v1.3 firmware version
798 +)))
756 756  
800 +(((
757 757  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.
802 +)))
758 758  
804 +(((
805 +
806 +)))
759 759  
808 +(((
760 760  **Example:**
810 +)))
761 761  
762 -* AT+MBFUN=1 and AT+DATACUT1/AT+DATACUT2 are not configure (0,0,0). So RS485-LN.
763 -* 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.
764 -* 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.
812 +* (((
813 +AT+MBFUN=1 and AT+DATACUT1/AT+DATACUT2 are not configure (0,0,0). So RS485-LN.
814 +)))
815 +* (((
816 +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.
817 +)))
818 +* (((
819 +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.
820 +)))
765 765  
766 766  [[image:image-20220602165351-6.png]]
767 767  
... ... @@ -769,201 +769,376 @@
769 769  
770 770  
771 771  
828 +
772 772  ==== **RS485 command timeout** ====
773 773  
831 +(((
774 774  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.
833 +)))
775 775  
835 +(((
776 776  Default value: 0, range:  0 ~~ 65 seconds
837 +)))
777 777  
778 -* **AT Command:**
839 +* (((
840 +**AT Command:**
841 +)))
779 779  
780 780  (% class="box infomessage" %)
781 781  (((
845 +(((
782 782  **AT+CMDDLaa=hex(bb cc)*1000**
783 783  )))
848 +)))
784 784  
850 +(((
785 785  **Example:**
852 +)))
786 786  
854 +(((
787 787  **AT+CMDDL1=1000** to send the open time to 1000ms
856 +)))
788 788  
858 +(((
859 +
860 +)))
789 789  
790 -* **Downlink Payload:**
862 +* (((
863 +**Downlink Payload:**
864 +)))
791 791  
866 +(((
792 792  **0x AA aa bb cc**
868 +)))
793 793  
870 +(((
794 794  Same as: AT+CMDDLaa=hex(bb cc)*1000
872 +)))
795 795  
874 +(((
796 796   **Example:**
876 +)))
797 797  
878 +(((
798 798   0xAA 01 00 01  ~-~-> Same as **AT+CMDDL1=1000 ms**
880 +)))
799 799  
800 800  
801 801  
884 +
802 802  ==== **Uplink payload mode** ====
803 803  
887 +(((
804 804  Define to use one uplink or multiple uplinks for the sampling.
889 +)))
805 805  
891 +(((
806 806  The use of this command please see: [[Compose Uplink payload>>||anchor="H3.3.4Composetheuplinkpayload"]]
893 +)))
807 807  
808 -* **AT Command:**
895 +* (((
896 +**AT Command:**
897 +)))
809 809  
810 810  (% class="box infomessage" %)
811 811  (((
901 +(((
812 812  **AT+DATAUP=0**
813 813  )))
904 +)))
814 814  
815 815  (% class="box infomessage" %)
816 816  (((
908 +(((
817 817  **AT+DATAUP=1**
818 818  )))
911 +)))
819 819  
913 +(((
914 +
915 +)))
820 820  
821 -* **Downlink Payload:**
917 +* (((
918 +**Downlink Payload:**
919 +)))
822 822  
921 +(((
823 823  **0xAD 00**  **~-~->** Same as AT+DATAUP=0
923 +)))
824 824  
925 +(((
825 825  **0xAD 01**  **~-~->** Same as AT+DATAUP=1
927 +)))
826 826  
827 827  
828 828  
931 +
829 829  ==== **Manually trigger an Uplink** ====
830 830  
934 +(((
831 831  Ask device to send an uplink immediately.
936 +)))
832 832  
833 -* **AT Command:**
938 +* (((
939 +**AT Command:**
940 +)))
834 834  
942 +(((
835 835  No AT Command for this, user can press the [[ACT button>>||anchor="H3.7Buttons"]] for 1 second for the same.
944 +)))
836 836  
946 +(((
947 +
948 +)))
837 837  
838 -* **Downlink Payload:**
950 +* (((
951 +**Downlink Payload:**
952 +)))
839 839  
954 +(((
840 840  **0x08 FF**, RS485-LN will immediately send an uplink.
956 +)))
841 841  
842 842  
843 843  
960 +
844 844  ==== **Clear RS485 Command** ====
845 845  
963 +(((
846 846  The AT+COMMANDx and AT+DATACUTx settings are stored in special location, user can use below command to clear them.
965 +)))
847 847  
848 -* **AT Command:**
967 +* (((
968 +**AT Command:**
969 +)))
849 849  
971 +(((
850 850  **AT+CMDEAR=mm,nn**   mm: start position of erase ,nn: stop position of erase
973 +)))
851 851  
975 +(((
852 852  Etc. AT+CMDEAR=1,10 means erase AT+COMMAND1/AT+DATACUT1 to AT+COMMAND10/AT+DATACUT10
977 +)))
853 853  
979 +(((
854 854  Example screen shot after clear all RS485 commands. 
981 +)))
855 855  
983 +(((
984 +
985 +)))
856 856  
987 +(((
857 857  The uplink screen shot is:
989 +)))
858 858  
859 859  [[image:1654160691922-496.png]]
860 860  
861 861  
862 -* **Downlink Payload:**
994 +* (((
995 +**Downlink Payload:**
996 +)))
863 863  
998 +(((
864 864  **0x09 aa bb** same as AT+CMDEAR=aa,bb
1000 +)))
865 865  
866 866  
867 867  
1004 +
868 868  ==== **Set Serial Communication Parameters** ====
869 869  
1007 +(((
870 870  Set the Rs485 serial communication parameters:
1009 +)))
871 871  
872 -* **AT Command:**
1011 +* (((
1012 +**AT Command:**
1013 +)))
873 873  
1015 +(((
874 874  Set Baud Rate:
1017 +)))
875 875  
876 876  (% class="box infomessage" %)
877 877  (((
1021 +(((
878 878  **AT+BAUDR=9600**    ~/~/ Options: (1200,2400,4800,14400,19200,115200)
879 879  )))
1024 +)))
880 880  
1026 +(((
881 881  Set UART Parity
1028 +)))
882 882  
883 883  (% class="box infomessage" %)
884 884  (((
1032 +(((
885 885  **AT+PARITY=0**    ~/~/ Option: 0: no parity, 1: odd parity, 2: even parity
886 886  )))
1035 +)))
887 887  
1037 +(((
888 888  Set STOPBIT
1039 +)))
889 889  
890 890  (% class="box infomessage" %)
891 891  (((
1043 +(((
892 892  **AT+STOPBIT=0**    ~/~/ Option: 0 for 1bit; 1 for 1.5 bit ; 2 for 2 bits
893 893  )))
1046 +)))
894 894  
1048 +(((
1049 +
1050 +)))
895 895  
896 -* **Downlink Payload:**
1052 +* (((
1053 +**Downlink Payload:**
1054 +)))
897 897  
1056 +(((
898 898  **A7 01 aa bb**: Same  AT+BAUDR=hex(aa bb)*100
1058 +)))
899 899  
1060 +(((
900 900  **Example:**
1062 +)))
901 901  
902 -* A7 01 00 60   same as AT+BAUDR=9600
903 -* A7 01 04 80  same as AT+BAUDR=115200
1064 +* (((
1065 +A7 01 00 60   same as AT+BAUDR=9600
1066 +)))
1067 +* (((
1068 +A7 01 04 80  same as AT+BAUDR=115200
1069 +)))
904 904  
1071 +(((
905 905  A7 02 aa: Same as  AT+PARITY=aa  (aa value: 00 , 01 or 02)
1073 +)))
906 906  
1075 +(((
907 907  A7 03 aa: Same as  AT+STOPBIT=aa  (aa value: 00 , 01 or 02)
1077 +)))
908 908  
909 909  
1080 +
1081 +
910 910  == 3.6 Listening mode for RS485 network ==
911 911  
1084 +(((
912 912  This feature support since firmware v1.4
1086 +)))
913 913  
1088 +(((
914 914  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.
1090 +)))
915 915  
916 916  [[image:image-20220602171200-8.png||height="567" width="1007"]]
917 917  
1094 +(((
918 918  To enable the listening mode, use can run the command AT+RXMODE.
1096 +)))
919 919  
1098 +(((
1099 +
1100 +)))
920 920  
921 -(% border="1" style="background-color:#ffffcc; width:500px" %)
922 -|=(% style="width: 161px;" %)**Command example:**|=(% style="width: 337px;" %)**Function**
923 -|(% 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.
924 -|(% 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
925 -|(% style="width:161px" %)AT+RXMODE=0,0|(% style="width:337px" %)Disable listening mode. This is the default settings.
926 -|(% style="width:161px" %) |(% style="width:337px" %)A6 aa bb cc  same as AT+RXMODE=aa,(bb<<8 ~| cc)
1102 +(% border="1" cellspacing="10" style="background-color:#ffffcc; width:500px" %)
1103 +|=(% style="width: 161px;" %)(((
1104 +**Command example:**
1105 +)))|=(% style="width: 337px;" %)(((
1106 +**Function**
1107 +)))
1108 +|(% style="width:161px" %)(((
1109 +AT+RXMODE=1,10
1110 +)))|(% style="width:337px" %)(((
1111 +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.
1112 +)))
1113 +|(% style="width:161px" %)(((
1114 +AT+RXMODE=2,500
1115 +)))|(% style="width:337px" %)(((
1116 +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
1117 +)))
1118 +|(% style="width:161px" %)(((
1119 +AT+RXMODE=0,0
1120 +)))|(% style="width:337px" %)(((
1121 +Disable listening mode. This is the default settings.
1122 +)))
1123 +|(% style="width:161px" %)(((
1124 +
1125 +)))|(% style="width:337px" %)(((
1126 +A6 aa bb cc  same as AT+RXMODE=aa,(bb<<8 | cc)
1127 +)))
927 927  
1129 +(((
928 928  **Downlink Command:**
1131 +)))
929 929  
1133 +(((
930 930  **0xA6 aa bb cc ** same as AT+RXMODE=aa,(bb<<8 | cc)
1135 +)))
931 931  
1137 +(((
1138 +
1139 +)))
932 932  
1141 +(((
933 933  **Example**:
1143 +)))
934 934  
1145 +(((
935 935  The RS485-LN is set to AT+RXMODE=2,1000
1147 +)))
936 936  
1149 +(((
937 937  There is a two Modbus commands in the RS485 network as below:
1151 +)))
938 938  
1153 +(((
939 939  The Modbus master send a command: (% style="background-color:#ffc000" %)01 03 00 00 00 02 c4 0b
1155 +)))
940 940  
1157 +(((
941 941  And Modbus slave reply with: (% style="background-color:green" %)01 03 04 00 00 00 00 fa 33
1159 +)))
942 942  
1161 +(((
943 943  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
1163 +)))
944 944  
1165 +(((
945 945  [[image:image-20220602171200-9.png]]
1167 +)))
946 946  
1169 +(((
1170 +
1171 +)))
947 947  
1173 +(((
948 948  (% 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.
1175 +)))
949 949  
950 950  
951 951  == 3.7 Buttons ==
952 952  
953 953  
954 -(% border="1" style="background-color:#f7faff; width:500px" %)
955 -|=**Button**|=(% style="width: 1420px;" %)**Feature**
956 -|**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**
957 -|**RST**|(% style="width:1420px" %)Reboot RS485
958 -|**PRO**|(% style="width:1420px" %)Use for upload image, see [[How to Update Image>>||anchor="H6.1Howtoupgradetheimage3F"]]
1181 +(% border="1" cellspacing="10" style="background-color:#f7faff; width:430px" %)
1182 +|=(% style="width: 30px;" %)**Button**|=(% style="width: 355px;" %)**Feature**
1183 +|(% style="width:30px" %)**ACT**|(% style="width:355px" %)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**
1184 +|(% style="width:30px" %)**RST**|(% style="width:355px" %)Reboot RS485
1185 +|(% style="width:30px" %)**PRO**|(% style="width:355px" %)Use for upload image, see [[How to Update Image>>||anchor="H6.1Howtoupgradetheimage3F"]]
959 959  
1187 +
960 960  == 3.8 LEDs ==
961 961  
962 -(% border="1" style="background-color:#f7faff; width:500px" %)
1190 +
1191 +(% border="1" cellspacing="10" style="background-color:#f7faff; width:430px" %)
963 963  |=**LEDs**|=**Feature**
964 964  |**PWR**|Always on if there is power
965 -|**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.
1194 +|**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.
966 966  
1196 +
1197 +
967 967  = 4. Case Study =
968 968  
969 969  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]]
... ... @@ -973,19 +973,26 @@
973 973  
974 974  == 5.1 Access AT Command ==
975 975  
1207 +(((
976 976  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.
1209 +)))
977 977  
978 978  [[image:1654162355560-817.png]]
979 979  
980 980  
1214 +(((
981 981  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:
1216 +)))
982 982  
983 983  [[image:1654162368066-342.png]]
984 984  
985 985  
1221 +(((
986 986  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/]]
1223 +)))
987 987  
988 988  
1226 +
989 989  == 5.2 Common AT Command Sequence ==
990 990  
991 991  === 5.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
... ... @@ -1059,13 +1059,23 @@
1059 1059  
1060 1060  == 6.1 How to upgrade the image? ==
1061 1061  
1300 +(((
1062 1062  The RS485-LN LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to RS485-LN to:
1302 +)))
1063 1063  
1064 -* Support new features
1065 -* For bug fix
1066 -* Change LoRaWAN bands.
1304 +* (((
1305 +Support new features
1306 +)))
1307 +* (((
1308 +For bug fix
1309 +)))
1310 +* (((
1311 +Change LoRaWAN bands.
1312 +)))
1067 1067  
1314 +(((
1068 1068  Below shows the hardware connection for how to upload an image to RS485-LN:
1316 +)))
1069 1069  
1070 1070  [[image:1654162535040-878.png]]
1071 1071  
... ... @@ -1076,8 +1076,10 @@
1076 1076  **Step3: **Open flashloader; choose the correct COM port to update.
1077 1077  
1078 1078  (((
1327 +(((
1079 1079  (% 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.
1080 1080  )))
1330 +)))
1081 1081  
1082 1082  
1083 1083  [[image:image-20220602175818-12.png]]
... ... @@ -1140,7 +1140,6 @@
1140 1140  * (% style="color:blue" %)**RU864**(%%): frequency bands RU864
1141 1141  * (% style="color:blue" %)**KZ865**(%%): frequency bands KZ865
1142 1142  
1143 -
1144 1144  = 9.Packing Info =
1145 1145  
1146 1146  
... ... @@ -1157,7 +1157,6 @@
1157 1157  * Package Size / pcs : 14.5 x 8 x 5 cm
1158 1158  * Weight / pcs : 170g
1159 1159  
1160 -
1161 1161  = 10. FCC Caution for RS485LN-US915 =
1162 1162  
1163 1163  (((

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