Changes for page RS485-LN – RS485 to LoRaWAN Converter User Manual
Last modified by Bei Jinggeng on 2025/01/16 11:36
Summary
-
Page properties (1 modified, 0 added, 0 removed)
Details
- Page properties
-
- Content
-
... ... @@ -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 95 + 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 ((( 239 +((( 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 ))) 242 +))) 240 240 241 241 ((( 245 +((( 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 v1.1 247 +))) 243 243 244 244 245 245 ))) ... ... @@ -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 ((( ... ... @@ -548,6 +548,7 @@ 548 548 549 549 550 550 554 + 551 551 ==== **RS485 Debug Command** ==== 552 552 553 553 ((( ... ... @@ -668,6 +668,7 @@ 668 668 669 669 670 670 675 + 671 671 ==== **Set Payload version** ==== 672 672 673 673 ((( ... ... @@ -699,66 +699,129 @@ 699 699 700 700 701 701 707 + 702 702 ==== **Set RS485 Sampling Commands** ==== 703 703 710 +((( 704 704 AT+COMMANDx or AT+DATACUTx 712 +))) 705 705 714 +((( 706 706 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"]]. 716 +))) 707 707 718 +((( 719 + 720 +))) 708 708 709 -* **AT Command:** 722 +* ((( 723 +**AT Command:** 724 +))) 710 710 711 711 (% class="box infomessage" %) 712 712 ((( 728 +((( 713 713 **AT+COMMANDx: Configure RS485 read command to sensor.** 714 714 ))) 731 +))) 715 715 716 716 (% class="box infomessage" %) 717 717 ((( 735 +((( 718 718 **AT+DATACUTx: Configure how to handle return from RS485 devices.** 719 719 ))) 738 +))) 720 720 740 +((( 741 + 742 +))) 721 721 722 -* **Downlink Payload:** 744 +* ((( 745 +**Downlink Payload:** 746 +))) 723 723 748 +((( 724 724 **0xAF** downlink command can be used to set AT+COMMANDx or AT+DATACUTx. 750 +))) 725 725 752 +((( 726 726 (% style="color:red" %)**Note**(%%): if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink. 754 +))) 727 727 756 +((( 728 728 Format: AF MM NN LL XX XX XX XX YY 758 +))) 729 729 760 +((( 730 730 Where: 762 +))) 731 731 732 -* MM: the ATCOMMAND or AT+DATACUT to be set. Value from 01 ~~ 0F, 733 -* NN: 0: no CRC; 1: add CRC-16/MODBUS ; 2: set the AT+DATACUT value. 734 -* LL: The length of AT+COMMAND or AT+DATACUT command 735 -* XX XX XX XX: AT+COMMAND or AT+DATACUT command 736 -* 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. 764 +* ((( 765 +MM: the ATCOMMAND or AT+DATACUT to be set. Value from 01 ~~ 0F, 766 +))) 767 +* ((( 768 +NN: 0: no CRC; 1: add CRC-16/MODBUS ; 2: set the AT+DATACUT value. 769 +))) 770 +* ((( 771 +LL: The length of AT+COMMAND or AT+DATACUT command 772 +))) 773 +* ((( 774 +XX XX XX XX: AT+COMMAND or AT+DATACUT command 775 +))) 776 +* ((( 777 +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. 778 +))) 737 737 780 +((( 738 738 **Example:** 782 +))) 739 739 784 +((( 740 740 (% style="color:#037691" %)**AF 03 01 06 0A 05 00 04 00 01 00**(%%): Same as AT+COMMAND3=0A 05 00 04 00 01,1 786 +))) 741 741 788 +((( 742 742 (% 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** 790 +))) 743 743 792 +((( 744 744 (% 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** 794 +))) 745 745 746 746 747 747 798 + 748 748 ==== **Fast command to handle MODBUS device** ==== 749 749 801 +((( 750 750 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]]. 803 +))) 751 751 805 +((( 752 752 This command is valid since v1.3 firmware version 807 +))) 753 753 809 +((( 754 754 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. 811 +))) 755 755 813 +((( 814 + 815 +))) 756 756 817 +((( 757 757 **Example:** 819 +))) 758 758 759 -* AT+MBFUN=1 and AT+DATACUT1/AT+DATACUT2 are not configure (0,0,0). So RS485-LN. 760 -* 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. 761 -* 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. 821 +* ((( 822 +AT+MBFUN=1 and AT+DATACUT1/AT+DATACUT2 are not configure (0,0,0). So RS485-LN. 823 +))) 824 +* ((( 825 +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. 826 +))) 827 +* ((( 828 +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. 829 +))) 762 762 763 763 [[image:image-20220602165351-6.png]] 764 764 ... ... @@ -766,200 +766,372 @@ 766 766 767 767 768 768 837 + 769 769 ==== **RS485 command timeout** ==== 770 770 840 +((( 771 771 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. 842 +))) 772 772 844 +((( 773 773 Default value: 0, range: 0 ~~ 65 seconds 846 +))) 774 774 775 -* **AT Command:** 848 +* ((( 849 +**AT Command:** 850 +))) 776 776 777 777 (% class="box infomessage" %) 778 778 ((( 854 +((( 779 779 **AT+CMDDLaa=hex(bb cc)*1000** 780 780 ))) 857 +))) 781 781 859 +((( 782 782 **Example:** 861 +))) 783 783 863 +((( 784 784 **AT+CMDDL1=1000** to send the open time to 1000ms 865 +))) 785 785 867 +((( 868 + 869 +))) 786 786 787 -* **Downlink Payload:** 871 +* ((( 872 +**Downlink Payload:** 873 +))) 788 788 875 +((( 789 789 **0x AA aa bb cc** 877 +))) 790 790 879 +((( 791 791 Same as: AT+CMDDLaa=hex(bb cc)*1000 881 +))) 792 792 883 +((( 793 793 **Example:** 885 +))) 794 794 887 +((( 795 795 0xAA 01 00 01 ~-~-> Same as **AT+CMDDL1=1000 ms** 889 +))) 796 796 797 797 798 798 893 + 799 799 ==== **Uplink payload mode** ==== 800 800 896 +((( 801 801 Define to use one uplink or multiple uplinks for the sampling. 898 +))) 802 802 900 +((( 803 803 The use of this command please see: [[Compose Uplink payload>>||anchor="H3.3.4Composetheuplinkpayload"]] 902 +))) 804 804 805 -* **AT Command:** 904 +* ((( 905 +**AT Command:** 906 +))) 806 806 807 807 (% class="box infomessage" %) 808 808 ((( 910 +((( 809 809 **AT+DATAUP=0** 810 810 ))) 913 +))) 811 811 812 812 (% class="box infomessage" %) 813 813 ((( 917 +((( 814 814 **AT+DATAUP=1** 815 815 ))) 920 +))) 816 816 922 +((( 923 + 924 +))) 817 817 818 -* **Downlink Payload:** 926 +* ((( 927 +**Downlink Payload:** 928 +))) 819 819 930 +((( 820 820 **0xAD 00** **~-~->** Same as AT+DATAUP=0 932 +))) 821 821 934 +((( 822 822 **0xAD 01** **~-~->** Same as AT+DATAUP=1 936 +))) 823 823 824 824 825 825 940 + 826 826 ==== **Manually trigger an Uplink** ==== 827 827 943 +((( 828 828 Ask device to send an uplink immediately. 945 +))) 829 829 830 -* **AT Command:** 947 +* ((( 948 +**AT Command:** 949 +))) 831 831 951 +((( 832 832 No AT Command for this, user can press the [[ACT button>>||anchor="H3.7Buttons"]] for 1 second for the same. 953 +))) 833 833 955 +((( 956 + 957 +))) 834 834 835 -* **Downlink Payload:** 959 +* ((( 960 +**Downlink Payload:** 961 +))) 836 836 963 +((( 837 837 **0x08 FF**, RS485-LN will immediately send an uplink. 965 +))) 838 838 839 839 840 840 969 + 841 841 ==== **Clear RS485 Command** ==== 842 842 972 +((( 843 843 The AT+COMMANDx and AT+DATACUTx settings are stored in special location, user can use below command to clear them. 974 +))) 844 844 845 -* **AT Command:** 976 +* ((( 977 +**AT Command:** 978 +))) 846 846 980 +((( 847 847 **AT+CMDEAR=mm,nn** mm: start position of erase ,nn: stop position of erase 982 +))) 848 848 984 +((( 849 849 Etc. AT+CMDEAR=1,10 means erase AT+COMMAND1/AT+DATACUT1 to AT+COMMAND10/AT+DATACUT10 986 +))) 850 850 988 +((( 851 851 Example screen shot after clear all RS485 commands. 990 +))) 852 852 992 +((( 993 + 994 +))) 853 853 996 +((( 854 854 The uplink screen shot is: 998 +))) 855 855 856 856 [[image:1654160691922-496.png]] 857 857 858 858 859 -* **Downlink Payload:** 1003 +* ((( 1004 +**Downlink Payload:** 1005 +))) 860 860 1007 +((( 861 861 **0x09 aa bb** same as AT+CMDEAR=aa,bb 1009 +))) 862 862 863 863 864 864 1013 + 865 865 ==== **Set Serial Communication Parameters** ==== 866 866 1016 +((( 867 867 Set the Rs485 serial communication parameters: 1018 +))) 868 868 869 -* **AT Command:** 1020 +* ((( 1021 +**AT Command:** 1022 +))) 870 870 1024 +((( 871 871 Set Baud Rate: 1026 +))) 872 872 873 873 (% class="box infomessage" %) 874 874 ((( 1030 +((( 875 875 **AT+BAUDR=9600** ~/~/ Options: (1200,2400,4800,14400,19200,115200) 876 876 ))) 1033 +))) 877 877 1035 +((( 878 878 Set UART Parity 1037 +))) 879 879 880 880 (% class="box infomessage" %) 881 881 ((( 1041 +((( 882 882 **AT+PARITY=0** ~/~/ Option: 0: no parity, 1: odd parity, 2: even parity 883 883 ))) 1044 +))) 884 884 1046 +((( 885 885 Set STOPBIT 1048 +))) 886 886 887 887 (% class="box infomessage" %) 888 888 ((( 1052 +((( 889 889 **AT+STOPBIT=0** ~/~/ Option: 0 for 1bit; 1 for 1.5 bit ; 2 for 2 bits 890 890 ))) 1055 +))) 891 891 1057 +((( 1058 + 1059 +))) 892 892 893 -* **Downlink Payload:** 1061 +* ((( 1062 +**Downlink Payload:** 1063 +))) 894 894 1065 +((( 895 895 **A7 01 aa bb**: Same AT+BAUDR=hex(aa bb)*100 1067 +))) 896 896 1069 +((( 897 897 **Example:** 1071 +))) 898 898 899 -* A7 01 00 60 same as AT+BAUDR=9600 900 -* A7 01 04 80 same as AT+BAUDR=115200 1073 +* ((( 1074 +A7 01 00 60 same as AT+BAUDR=9600 1075 +))) 1076 +* ((( 1077 +A7 01 04 80 same as AT+BAUDR=115200 1078 +))) 901 901 1080 +((( 902 902 A7 02 aa: Same as AT+PARITY=aa (aa value: 00 , 01 or 02) 1082 +))) 903 903 1084 +((( 904 904 A7 03 aa: Same as AT+STOPBIT=aa (aa value: 00 , 01 or 02) 1086 +))) 905 905 906 906 1089 + 1090 + 907 907 == 3.6 Listening mode for RS485 network == 908 908 1093 +((( 909 909 This feature support since firmware v1.4 1095 +))) 910 910 1097 +((( 911 911 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. 1099 +))) 912 912 913 913 [[image:image-20220602171200-8.png||height="567" width="1007"]] 914 914 1103 +((( 915 915 To enable the listening mode, use can run the command AT+RXMODE. 1105 +))) 916 916 1107 +((( 1108 + 1109 +))) 917 917 918 -(% border="1" style="background-color:#ffffcc; width:500px" %) 919 -|=(% style="width: 161px;" %)**Command example:**|=(% style="width: 337px;" %)**Function** 920 -|(% 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. 921 -|(% 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 922 -|(% style="width:161px" %)AT+RXMODE=0,0|(% style="width:337px" %)Disable listening mode. This is the default settings. 923 -|(% style="width:161px" %) |(% style="width:337px" %)A6 aa bb cc same as AT+RXMODE=aa,(bb<<8 ~| cc) 1111 +(% border="1" cellspacing="10" style="background-color:#ffffcc; width:500px" %) 1112 +|=(% style="width: 161px;" %)((( 1113 +**Command example:** 1114 +)))|=(% style="width: 337px;" %)((( 1115 +**Function** 1116 +))) 1117 +|(% style="width:161px" %)((( 1118 +AT+RXMODE=1,10 1119 +)))|(% style="width:337px" %)((( 1120 +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. 1121 +))) 1122 +|(% style="width:161px" %)((( 1123 +AT+RXMODE=2,500 1124 +)))|(% style="width:337px" %)((( 1125 +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 1126 +))) 1127 +|(% style="width:161px" %)((( 1128 +AT+RXMODE=0,0 1129 +)))|(% style="width:337px" %)((( 1130 +Disable listening mode. This is the default settings. 1131 +))) 1132 +|(% style="width:161px" %)((( 1133 + 1134 +)))|(% style="width:337px" %)((( 1135 +A6 aa bb cc same as AT+RXMODE=aa,(bb<<8 | cc) 1136 +))) 924 924 1138 +((( 925 925 **Downlink Command:** 1140 +))) 926 926 1142 +((( 927 927 **0xA6 aa bb cc ** same as AT+RXMODE=aa,(bb<<8 | cc) 1144 +))) 928 928 1146 +((( 1147 + 1148 +))) 929 929 1150 +((( 930 930 **Example**: 1152 +))) 931 931 1154 +((( 932 932 The RS485-LN is set to AT+RXMODE=2,1000 1156 +))) 933 933 1158 +((( 934 934 There is a two Modbus commands in the RS485 network as below: 1160 +))) 935 935 1162 +((( 936 936 The Modbus master send a command: (% style="background-color:#ffc000" %)01 03 00 00 00 02 c4 0b 1164 +))) 937 937 1166 +((( 938 938 And Modbus slave reply with: (% style="background-color:green" %)01 03 04 00 00 00 00 fa 33 1168 +))) 939 939 1170 +((( 940 940 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 1172 +))) 941 941 1174 +((( 942 942 [[image:image-20220602171200-9.png]] 1176 +))) 943 943 1178 +((( 1179 + 1180 +))) 944 944 1182 +((( 945 945 (% 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. 1184 +))) 946 946 947 947 948 948 == 3.7 Buttons == 949 949 950 950 951 -(% border="1" style="background-color:#f7faff; width: 500px" %)952 -|=**Button**|=(% style="width: 1420px;" %)**Feature**953 -|**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**954 -|**RST**|(% style="width: 1420px" %)Reboot RS485955 -|**PRO**|(% style="width: 1420px" %)Use for upload image, see [[How to Update Image>>||anchor="H6.1Howtoupgradetheimage3F"]]1190 +(% border="1" cellspacing="10" style="background-color:#f7faff; width:400px" %) 1191 +|=(% style="width: 50px;" %)**Button**|=(% style="width: 350px;" %)**Feature** 1192 +|(% style="width:50px" %)**ACT**|(% style="width:350px" %)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** 1193 +|(% style="width:50px" %)**RST**|(% style="width:350px" %)Reboot RS485 1194 +|(% style="width:50px" %)**PRO**|(% style="width:350px" %)Use for upload image, see [[How to Update Image>>||anchor="H6.1Howtoupgradetheimage3F"]] 956 956 957 957 == 3.8 LEDs == 958 958 959 -(% border="1" style="background-color:#f7faff; width:500px" %) 960 -|=**LEDs**|=**Feature** 1198 + 1199 +(% border="1" cellspacing="10" style="background-color:#f7faff; width:430px" %) 1200 +|=(% style="width: 50px;" %)**LEDs**|=(% style="width: 380px;" %)**Feature** 961 961 |**PWR**|Always on if there is power 962 -|**SYS**|After device is powered on, the SYS will (% style="color:green" %)**fast blink 1202 +|**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. 963 963 964 964 = 4. Case Study = 965 965 ... ... @@ -970,19 +970,26 @@ 970 970 971 971 == 5.1 Access AT Command == 972 972 1213 +((( 973 973 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 +))) 974 974 975 975 [[image:1654162355560-817.png]] 976 976 977 977 1220 +((( 978 978 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 +))) 979 979 980 980 [[image:1654162368066-342.png]] 981 981 982 982 1227 +((( 983 983 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 +))) 984 984 985 985 1232 + 986 986 == 5.2 Common AT Command Sequence == 987 987 988 988 === 5.2.1 Multi-channel ABP mode (Use with SX1301/LG308) === ... ... @@ -1056,13 +1056,23 @@ 1056 1056 1057 1057 == 6.1 How to upgrade the image? == 1058 1058 1306 +((( 1059 1059 The RS485-LN LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to RS485-LN to: 1308 +))) 1060 1060 1061 -* Support new features 1062 -* For bug fix 1063 -* Change LoRaWAN bands. 1310 +* ((( 1311 +Support new features 1312 +))) 1313 +* ((( 1314 +For bug fix 1315 +))) 1316 +* ((( 1317 +Change LoRaWAN bands. 1318 +))) 1064 1064 1320 +((( 1065 1065 Below shows the hardware connection for how to upload an image to RS485-LN: 1322 +))) 1066 1066 1067 1067 [[image:1654162535040-878.png]] 1068 1068 ... ... @@ -1073,8 +1073,10 @@ 1073 1073 **Step3: **Open flashloader; choose the correct COM port to update. 1074 1074 1075 1075 ((( 1333 +((( 1076 1076 (% 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. 1077 1077 ))) 1336 +))) 1078 1078 1079 1079 1080 1080 [[image:image-20220602175818-12.png]] ... ... @@ -1137,7 +1137,6 @@ 1137 1137 * (% style="color:blue" %)**RU864**(%%): frequency bands RU864 1138 1138 * (% style="color:blue" %)**KZ865**(%%): frequency bands KZ865 1139 1139 1140 - 1141 1141 = 9.Packing Info = 1142 1142 1143 1143 ... ... @@ -1154,7 +1154,6 @@ 1154 1154 * Package Size / pcs : 14.5 x 8 x 5 cm 1155 1155 * Weight / pcs : 170g 1156 1156 1157 - 1158 1158 = 10. FCC Caution for RS485LN-US915 = 1159 1159 1160 1160 (((