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Last modified by Mengting Qiu on 2025/06/04 18:42
From version 66.22
edited by Xiaoling
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To version 31.1
edited by Xiaoling
on 2022/05/24 09:33
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Summary

Details

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Content
... ... @@ -45,114 +45,44 @@
45 45  
46 46  == 1.2  Specifications ==
47 47  
48 -(((
49 49  **Hardware System:**
50 -)))
51 51  
52 -* (((
53 -STM32L072CZT6 MCU
54 -)))
55 -* (((
56 -SX1276/78 Wireless Chip 
57 -)))
58 -* (((
59 -(((
60 -Power Consumption:
61 -)))
50 +* STM32L072CZT6 MCU
51 +* SX1276/78 Wireless Chip 
52 +* Power Consumption:
53 +** Idle: 4mA@12v
54 +** 20dB Transmit: 34mA@12v
62 62  
63 -* (((
64 -Idle: 4mA@12v
65 -)))
66 -* (((
67 -20dB Transmit: 34mA@12v
68 -)))
69 -)))
70 -
71 -(((
72 72  **Interface for Model: LT22222-L:**
73 -)))
74 74  
75 -* (((
76 -2 x Digital dual direction Input (Detect High/Low signal, Max: 50v, or 220v with optional external resistor)
77 -)))
78 -* (((
79 -2 x Digital Output (NPN output. Max pull up voltage 36V,450mA)
80 -)))
81 -* (((
82 -2 x Relay Output (5A@250VAC / 30VDC)
83 -)))
84 -* (((
85 -2 x 0~~20mA Analog Input (res:0.01mA)
86 -)))
87 -* (((
88 -2 x 0~~30V Analog Input (res:0.01v)
89 -)))
90 -* (((
91 -Power Input 7~~ 24V DC. 
92 -)))
58 +* 2 x Digital dual direction Input (Detect High/Low signal, Max: 50v, or 220v with optional external resistor)
59 +* 2 x Digital Output (NPN output. Max pull up voltage 36V,450mA)
60 +* 2 x Relay Output (5A@250VAC / 30VDC)
61 +* 2 x 0~~20mA Analog Input (res:0.01mA)
62 +* 2 x 0~~30V Analog Input (res:0.01v)
63 +* Power Input 7~~ 24V DC. 
93 93  
94 -(((
95 95  **LoRa Spec:**
96 -)))
97 97  
98 -* (((
99 -(((
100 -Frequency Range:
101 -)))
67 +* Frequency Range:
68 +** Band 1 (HF): 862 ~~ 1020 Mhz
69 +** Band 2 (LF): 410 ~~ 528 Mhz
70 +* 168 dB maximum link budget.
71 +* +20 dBm - 100 mW constant RF output vs.
72 +* +14 dBm high efficiency PA.
73 +* Programmable bit rate up to 300 kbps.
74 +* High sensitivity: down to -148 dBm.
75 +* Bullet-proof front end: IIP3 = -12.5 dBm.
76 +* Excellent blocking immunity.
77 +* Low RX current of 10.3 mA, 200 nA register retention.
78 +* Fully integrated synthesizer with a resolution of 61 Hz.
79 +* FSK, GFSK, MSK, GMSK, LoRaTM and OOK modulation.
80 +* Built-in bit synchronizer for clock recovery.
81 +* Preamble detection.
82 +* 127 dB Dynamic Range RSSI.
83 +* Automatic RF Sense and CAD with ultra-fast AFC.
84 +* Packet engine up to 256 bytes with CRC.
102 102  
103 -* (((
104 -Band 1 (HF): 862 ~~ 1020 Mhz
105 -)))
106 -* (((
107 -Band 2 (LF): 410 ~~ 528 Mhz
108 -)))
109 -)))
110 -* (((
111 -168 dB maximum link budget.
112 -)))
113 -* (((
114 -+20 dBm - 100 mW constant RF output vs.
115 -)))
116 -* (((
117 -+14 dBm high efficiency PA.
118 -)))
119 -* (((
120 -Programmable bit rate up to 300 kbps.
121 -)))
122 -* (((
123 -High sensitivity: down to -148 dBm.
124 -)))
125 -* (((
126 -Bullet-proof front end: IIP3 = -12.5 dBm.
127 -)))
128 -* (((
129 -Excellent blocking immunity.
130 -)))
131 -* (((
132 -Low RX current of 10.3 mA, 200 nA register retention.
133 -)))
134 -* (((
135 -Fully integrated synthesizer with a resolution of 61 Hz.
136 -)))
137 -* (((
138 -FSK, GFSK, MSK, GMSK, LoRaTM and OOK modulation.
139 -)))
140 -* (((
141 -Built-in bit synchronizer for clock recovery.
142 -)))
143 -* (((
144 -Preamble detection.
145 -)))
146 -* (((
147 -127 dB Dynamic Range RSSI.
148 -)))
149 -* (((
150 -Automatic RF Sense and CAD with ultra-fast AFC.
151 -)))
152 -* (((
153 -Packet engine up to 256 bytes with CRC.
154 -)))
155 -
156 156  == 1.3 Features ==
157 157  
158 158  * LoRaWAN Class A & Class C protocol
... ... @@ -199,21 +199,13 @@
199 199  
200 200  == 3.1 How it works? ==
201 201  
202 -(((
203 203  The LT is configured as LoRaWAN OTAA Class C mode by default. It has OTAA keys to join network. To connect a local LoRaWAN network, user just need to input the OTAA keys in the network server and power on the LT. It will auto join the network via OTAA. For LT-22222-L, the LED will show the Join status: After power on **TX LED** will fast blink 5 times, LT-22222-L will enter working mode and start to JOIN LoRaWAN network. **TX LED** will be on for 5 seconds after joined in network. When there is message from server, the **RX LED** will be on for 1 second. 
204 -)))
205 205  
206 -(((
207 -In case user can’t set the OTAA keys in the network server and has to use the existing keys from server. User can [[use AT Command>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/#H4.UseATCommand]] to set the keys in the devices.
208 -)))
134 +In case user can’t set the OTAA keys in the network server and has to use the existing keys from server. User can [[use AT Command>>path:#AT_Command]] to set the keys in the devices.
209 209  
210 -(((
211 211  3.2 Example to join LoRaWAN network
212 -)))
213 213  
214 -(((
215 215  This chapter shows an example for how to join the TTN LoRaWAN Network. Below is the network structure, we use our LG308 as LoRaWAN gateway here. 
216 -)))
217 217  
218 218  [[image:image-20220523172350-1.png||height="266" width="864"]]
219 219  
... ... @@ -313,9 +313,7 @@
313 313  
314 314  **For LT-22222-L**: this mode the **DI1 and DI2** are used as counting pins.
315 315  
316 -(((
317 317  Total : 11 bytes payload
318 -)))
319 319  
320 320  [[image:image-20220523180452-3.png]]
321 321  
... ... @@ -407,7 +407,7 @@
407 407  **ATZ**
408 408  )))
409 409  
410 -Other AT Commands for counting are similar to [[MOD2 Counting Command>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/#H3.3.2AT2BMOD3D22C28DoubleDICounting29]].
330 +Other AT Commands for counting are similar to [[MOD2 Counting Command>>path:#COUNT_COMMAND]].
411 411  
412 412  === 3.3.4 AT+MOD~=4, Single DI Counting + 1 x Voltage Counting ===
413 413  
... ... @@ -442,7 +442,7 @@
442 442  )))
443 443  
444 444  
445 -Other AT Commands for counting are similar to [[MOD2 Counting Command>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/#H3.3.2AT2BMOD3D22C28DoubleDICounting29]].
365 +Other AT Commands for counting are similar to [[MOD2 Counting Command>>path:#COUNT_COMMAND]].
446 446  
447 447  **Plus below command for AVI1 Counting:**
448 448  
... ... @@ -494,7 +494,7 @@
494 494  **ATZ**
495 495  )))
496 496  
497 -Other AT Commands for counting are similar to [[MOD2 Counting Command>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/#H3.3.2AT2BMOD3D22C28DoubleDICounting29]].
417 +Other AT Commands for counting are similar to [[MOD2 Counting Command>>path:#COUNT_COMMAND]].
498 498  
499 499  === 3.3.6 AT+ADDMOD~=6. (Trigger Mode, Optional) ===
500 500  
... ... @@ -543,7 +543,7 @@
543 543  
544 544  **Downlink Command to set Trigger Condition**
545 545  
546 -Type Code: 0xAA. Downlink command same as AT Command **AT+AVLIM, AT+ACLIM**
466 +Type Code: 0xAA. Downlink command same as AT Command [[AT+AVLIM, AT+ACLIM>>path:#AT_Trigger]]
547 547  
548 548  Format: AA xx yy1 yy1 yy2 yy2 yy3 yy3 yy4 yy4
549 549  
... ... @@ -563,7 +563,7 @@
563 563  
564 564  Same as AT+AVLIM=5000,0,0,0   (If AVI1 voltage lower than 5V , trigger uplink, 0 means ignore)
565 565  
566 -**Example2**: AA 02 01 00
486 +Example2: AA 02 01 00
567 567  
568 568  Same as AT+ DTRI =1,0  (Enable DI1 trigger / disable DI2 trigger)
569 569  
... ... @@ -925,7 +925,11 @@
925 925  
926 926  (% style="color:#4f81bd" %)**Fifth Byte**(%%): Control Method and Ports status:
927 927  
928 -[[image:image-20220524093351-8.png]]
848 +(% border="1" style="background-color:#f7faff" %)
849 +|Second Byte|Status
850 +|0x01|DO3 set to low
851 +|0x00|DO3 set to high
852 +|0x11|DO3 NO Action
929 929  
930 930  (% style="color:#4f81bd" %)**Sixth and Seventh Byte**:
931 931  
... ... @@ -933,129 +933,147 @@
933 933  
934 934  Device will upload a packet if downlink code executes successfully.
935 935  
936 -**Example payload:**
937 937  
938 -**~1. A9 01 01 01 01 07 D0**
939 939  
862 +Example payload:
863 +
864 +1. A9 01 01 01 01 07 D0
865 +
940 940  DO1 pin & DO2 pin & DO3 pin will be set to Low, last 2 seconds, then change back to original state.
941 941  
942 -**2. A9 01 00 01 11 07 D0**
943 943  
869 +1. A9 01 00 01 11 07 D0
870 +
944 944  DO1 pin set high, DO2 pin set low, DO3 pin no action, last 2 seconds, then change back to original state.
945 945  
946 -**3. A9 00 00 00 00 07 D0**
947 947  
874 +1. A9 00 00 00 00 07 D0
875 +
948 948  DO1 pin & DO2 pin & DO3 pin will be set to high, last 2 seconds, then both change to low.
949 949  
950 -**4. A9 00 11 01 00 07 D0**
951 951  
879 +1. A9 00 11 01 00 07 D0
880 +
952 952  DO1 pin no action, DO2 pin set low, DO3 pin set high, last 2 seconds, then DO1 pin no action, DO2 pin set high, DO3 pin set low
953 953  
954 954  
955 -=== 3.4.2.14 Relay ~-~- Control Relay Output RO1/RO2 ===
956 956  
885 +
886 +==== Relay ~-~- Control Relay Output RO1/RO2 ====
887 +
957 957  * AT Command:
958 958  
959 959  There is no AT Command to control Relay Output
960 960  
892 +
961 961  * Downlink Payload (prefix 0x03):
962 962  
963 -(% class="box infomessage" %)
964 -(((
965 -**0x03 aa bb     ~/~/ Set RO1/RO2 output**
966 -)))
895 +0x03 aa bb     ~/~/ Set RO1/RO2 output
967 967  
968 -(((
969 969  If payload = 0x030100, it means set RO1 to close and RO2 to open.
970 -)))
971 971  
972 -(((
973 973  01: Close ,  00: Open , 11: No action
974 -)))
975 975  
976 -(((
977 -[[image:image-20220524093724-9.png]]
978 -)))
901 +(% border="1" style="background-color:#f7faff" %)
902 +|Downlink Code|RO1|RO2
903 +|03  00  11|Open|No Action
904 +|03  01  11|Close|No Action
905 +|03  11  00|No Action|Open
906 +|03  11  01|No Action|Close
907 +|03  00  00|Open|Open
908 +|03  01  01|Close|Close
909 +|03  01  00|Close|Open
910 +|03  00  01|Open|Close
979 979  
980 980  Device will upload a packet if downlink code executes successfully.
981 981  
982 982  
983 -==== 3.4.2.15 Relay ~-~- Control Relay Output RO1/RO2 with time control ====
915 +==== Relay ~-~- Control Relay Output RO1/RO2 with time control ====
984 984  
985 985  * AT Command:
986 986  
987 987  There is no AT Command to control Relay Output
988 988  
921 +
989 989  * Downlink Payload (prefix 0x05):
990 990  
991 -(% class="box infomessage" %)
992 -(((
993 -**0x05 aa bb cc dd     ~/~/ Set RO1/RO2 relay with time control:**
994 -)))
924 +0x05 aa bb cc dd     ~/~/ Set RO1/RO2 relay with time control:
995 995  
996 996  This is to control the relay output time of relay. Include four bytes:
997 997  
998 -(% style="color:#4f81bd" %)**First Byte **(%%)**:** Type code (0x05)
928 +**First Byte:** Type code (0x05)
999 999  
1000 -(% style="color:#4f81bd" %)**Second Byte(aa)**(%%): Inverter Mode
930 +**Second Byte(aa)**: Inverter Mode
1001 1001  
1002 1002  01: Relays will change back to original state after timeout.
1003 1003  
1004 1004  00: Relays will change to an inverter state after timeout
1005 1005  
1006 -(% style="color:#4f81bd" %)**Third Byte(bb)**(%%): Control Method and Ports status:
1007 1007  
1008 -[[image:image-20220524093831-10.png]]
937 +**Third Byte(bb)**: Control Method and Ports status:
1009 1009  
1010 -(% style="color:#4f81bd" %)**Fourth/Fifth Bytes(cc)**(%%): Latching time. Unit: ms
939 +(% border="1" style="background-color:#f7faff" %)
940 +|Value|Status
941 +|0x11|RO1 and RO2 to NO
942 +|0x10|RO2 to NO, RO1 to NC
943 +|0x01|RO2 to NC, RO1 to NO
944 +|0x00|RO1 and RO2 to NC.
945 +|0x20|RO1 No Action, RO2 to NC
946 +|0x21|RO1 No Action, RO2 to NO
947 +|0x02|RO1 to NC, RO2 No Action
948 +|0x12|RO1 to NO, RO2 No Action
1011 1011  
950 +**Fourth / Fifth Bytes (cc)**: Latching time. Unit: ms
951 +
1012 1012  Device will upload a packet if downlink code executes successfully.
1013 1013  
954 +
955 +
1014 1014  **Example payload:**
1015 1015  
1016 -**~1. 05 01 11 07 D0**
958 +1. 05 01 11 07 D0
1017 1017  
1018 1018  Relay1 and Relay 2 will be set to NO , last 2 seconds, then change back to original state.
1019 1019  
1020 -**2. 05 01 10 07 D0**
1021 1021  
963 +1. 05 01 10 07 D0
964 +
1022 1022  Relay1 will change to NO, Relay2 will change to NC, last 2 seconds, then both change back to original state.
1023 1023  
1024 -**3. 05 00 01 07 D0**
1025 1025  
968 +1. 05 00 01 07 D0
969 +
1026 1026  Relay1 will change to NC, Relay2 will change to NO, last 2 seconds, then relay change to NO, Relay2 change to NC.
1027 1027  
1028 -**4. 05 00 00 07 D0**
1029 1029  
973 +1. 05 00 00 07 D0
974 +
1030 1030  Relay 1 & relay2 will change to NC, last 2 seconds, then both change to NO.
1031 1031  
1032 1032  
1033 -==== 3.4.2.16 Counting ~-~- Voltage threshold counting ====
1034 1034  
1035 -When voltage exceed the threshold, count. Feature see [[MOD4>>path:http://8.211.40.43:8080/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/#H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting]]
1036 1036  
980 +
981 +
982 +==== Counting ~-~- Voltage threshold counting ====
983 +
984 +When voltage exceed the threshold, count. Feature see [[MOD4>>path:#MOD4]]
985 +
1037 1037  * AT Command:
1038 1038  
1039 -(% class="box infomessage" %)
1040 -(((
1041 -**AT+VOLMAX    ~/~/ See [[MOD4>>path:http://8.211.40.43:8080/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/#H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting]]**
1042 -)))
988 +AT+VOLMAX    ~/~/ See [[MOD4>>path:#MOD4]]
1043 1043  
990 +
1044 1044  * Downlink Payload (prefix 0xA5):
1045 1045  
1046 -(% class="box infomessage" %)
1047 -(((
1048 -**0xA5 aa bb cc   ~/~/ Same as AT+VOLMAX=(aa bb),cc**
1049 -)))
993 +0xA5 aa bb cc   ~/~/ Same as AT+VOLMAX=(aa bb),cc
1050 1050  
1051 -==== 3.4.2.17 Counting ~-~- Pre-configure the Count Number ====
1052 1052  
996 +==== Counting ~-~- Pre-configure the Count Number ====
997 +
1053 1053  * AT Command:
1054 1054  
1055 -(% class="box infomessage" %)
1056 -(((
1057 -**AT+SETCNT=aa,(bb cc dd ee) **
1058 -)))
1000 +AT+SETCNT=aa,(bb cc dd ee)
1059 1059  
1060 1060  aa: 1: Set count1,
1061 1061  
... ... @@ -1065,109 +1065,115 @@
1065 1065  
1066 1066  Bb cc dd ee: number to be set
1067 1067  
1010 +
1068 1068  * Downlink Payload (prefix 0xA8):
1069 1069  
1070 -(% class="box infomessage" %)
1071 -(((
1072 -**0x A8 aa bb cc dd ee     ~/~/ same as AT+SETCNT=aa,(bb cc dd ee)**
1073 -)))
1013 +0x A8 aa bb cc dd ee     ~/~/ same as AT+SETCNT=aa,(bb cc dd ee)
1074 1074  
1075 -==== 3.4.2.18 Counting ~-~- Clear Counting ====
1076 1076  
1016 +
1017 +
1018 +
1019 +==== Counting ~-~- Clear Counting ====
1020 +
1077 1077  Clear counting for counting mode
1078 1078  
1079 1079  * AT Command:
1080 1080  
1081 -(% class="box infomessage" %)
1082 -(((
1083 -**AT+CLRCOUNT ~/~/ clear all counting**
1084 -)))
1025 +AT+CLRCOUNT ~/~/ clear all counting
1085 1085  
1027 +
1086 1086  * Downlink Payload (prefix 0xA6):
1087 1087  
1088 -(% class="box infomessage" %)
1089 -(((
1090 -**0x A6 01     ~/~/ clear all counting,**
1091 -)))
1030 +0x A6 01     ~/~/ clear all counting,
1092 1092  
1093 -==== 3.4.2.19 Counting ~-~- Change counting mode save time ====
1094 1094  
1033 +
1034 +
1035 +==== Counting ~-~- Change counting mode save time ====
1036 +
1095 1095  * AT Command:
1096 1096  
1097 -(% class="box infomessage" %)
1098 -(((
1099 -**AT+COUTIME=60  ~/~/ Set save time to 60 seconds. Device will save the counting result in internal flash every 60 seconds. (min value: 30)**
1100 -)))
1039 +AT+COUTIME=60  ~/~/ Set save time to 60 seconds. Device will save the counting result in internal flash every 60 seconds. (min value: 30)
1101 1101  
1041 +
1102 1102  * Downlink Payload (prefix 0xA7):
1103 1103  
1104 -(% class="box infomessage" %)
1105 -(((
1106 -**0x A7 aa bb cc     ~/~/ same as AT+COUTIME =aa bb cc,**
1107 -)))
1044 +0x A7 aa bb cc     ~/~/ same as AT+COUTIME =aa bb cc,
1108 1108  
1109 1109  range: aa bb cc:0 to 16777215,  (unit:second)
1110 1110  
1111 -== 3.5 Integrate with Mydevice ==
1112 1112  
1049 +
1050 +
1051 +1.
1052 +11. Integrate with Mydevice
1053 +
1113 1113  Mydevices provides a human friendly interface to show the sensor data, once we have data in TTN, we can use Mydevices to connect to TTN and see the data in Mydevices. Below are the steps:
1114 1114  
1115 -**Step 1**: Be sure that your device is programmed and properly connected to the network at this time.
1116 1116  
1117 -**Step 2**: To configure the Application to forward data to Mydevices you will need to add integration. To add the Mydevices integration, perform the following steps:
1057 +Step 1: Be sure that your device is programmed and properly connected to the network at this time.
1118 1118  
1119 -[[image:1653356737703-362.png||height="232" width="732"]]
1059 +Step 2: To configure the Application to forward data to Mydevices you will need to add integration. To add the Mydevices integration, perform the following steps:
1120 1120  
1121 -[[image:image-20220524094641-11.png||height="390" width="723"]]
1122 1122  
1062 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image010.png]]
1123 1123  
1124 -[[image:image-20220524094641-12.png||height="402" width="718"]]
1125 1125  
1126 -**Step 3**: Create an account or log in Mydevices.
1065 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image011.png]]
1127 1127  
1128 -**Step 4**: Search LT-22222-L(for both LT-22222-L / LT-33222-L) and add DevEUI.(% style="display:none" %)
1129 1129  
1068 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image012.png]]
1069 +
1070 +
1071 +
1072 +Step 3: Create an account or log in Mydevices.
1073 +
1074 +Step 4: Search LT-22222-L(for both LT-22222-L / LT-33222-L) and add DevEUI.
1075 +
1130 1130  Search under The things network
1131 1131  
1132 -[[image:1653356838789-523.png||height="337" width="740"]]
1078 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image013.png]]
1133 1133  
1080 +
1134 1134  After added, the sensor data arrive TTN, it will also arrive and show in Mydevices.
1135 1135  
1136 -[[image:image-20220524094909-1.png||height="335" width="729"]]
1083 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image014.png]]
1137 1137  
1138 -[[image:image-20220524094909-2.png||height="337" width="729"]]
1139 1139  
1140 -[[image:image-20220524094909-3.png||height="338" width="727"]]
1086 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image015.png]]
1141 1141  
1142 -[[image:image-20220524094909-4.png||height="339" width="728"]](% style="display:none" %)
1143 1143  
1144 -[[image:image-20220524094909-5.png||height="341" width="734"]]
1089 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image016.png]]
1145 1145  
1146 -== 3.6 Interface Detail ==
1147 1147  
1148 -=== 3.6.1 Digital Input Port: DI1/DI2 /DI3 ( For LT-33222-L, low active ) ===
1092 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image017.png]]
1149 1149  
1094 +
1095 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image018.png]]
1096 +
1097 +
1098 +1.
1099 +11. Interface Detail
1100 +111. Digital Input Port: DI1/DI2 /DI3 ( For LT-33222-L, low active )
1101 +
1150 1150  Support NPN Type sensor
1151 1151  
1152 -[[image:1653356991268-289.png]]
1104 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image019.png]]
1153 1153  
1154 -=== 3.6.2 Digital Input Port: DI1/DI2 ( For LT-22222-L) ===
1155 1155  
1156 -(((
1107 +
1108 +1.
1109 +11.
1110 +111. Digital Input Port: DI1/DI2 ( For LT-22222-L)
1111 +
1157 1157  The DI port of LT-22222-L can support NPN or PNP output sensor.
1158 -)))
1159 1159  
1160 -(((
1161 -(((
1162 1162  Internal circuit as below, the NEC2501 is a photocoupler, the Active current (from NEC2501 pin 1 to pin 2 is 1ma and the max current is 50mA. When there is active current pass NEC2501 pin1 to pin2. The DI will be active high
1163 -)))
1164 -)))
1165 1165  
1166 -[[image:1653357170703-587.png]]
1116 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image020.png]]
1167 1167  
1168 -(((
1169 1169  When use need to connect a device to the DI port, both DI1+ and DI1- must be connected.
1170 -)))
1171 1171  
1172 1172  
1173 1173  **Example1**: Connect to a Low active sensor.
... ... @@ -1177,11 +1177,11 @@
1177 1177  * Connect sensor’s output to DI1-
1178 1178  * Connect sensor’s VCC to DI1+.
1179 1179  
1180 -So when sensor active, the current between NEC2501 pin1 and pin2 is： ​​
1128 +So when sensor active, the current between NEC2501 pin1 and pin2 is:
1181 1181  
1182 - //IF// = DI1+ / 1K.
1130 + //IF//[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image021.png]] = DI1+ / 1K.
1183 1183  
1184 -If DI1+ = 12v, the //IF// = 12mA , So the LT-22222-L will be able to detect this active signal.
1132 +If DI1+ = 12v, the //IF//[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image022.png]] = 12mA , So the LT-22222-L will be able to detect this active signal.
1185 1185  
1186 1186  
1187 1187  **Example2**: Connect to a High active sensor.
... ... @@ -1193,12 +1193,12 @@
1193 1193  
1194 1194  So when sensor active, the current between NEC2501 pin1 and pin2 is:
1195 1195  
1196 -[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]][[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]][[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]]** [[image:image-20220524095628-8.png]]= DI1+ / 1K.**
1144 + //IF//[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image021.png]] = DI1+ / 1K.
1197 1197  
1198 -If **DI1+ = 24v**, the [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]][[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]][[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]]**[[image:image-20220524095628-8.png]]** = 24mA , So the LT-22222-L will be able to detect this high active signal.
1146 +If DI1+ = 24v, the //IF//[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image022.png]] = 24mA , So the LT-22222-L will be able to detect this high active signal.
1199 1199  
1200 1200  
1201 -**Example3**: Connect to a 220v high active sensor.
1149 +**Example3**: Connect to a 220v high active sensor.公司测试一下
1202 1202  
1203 1203  Assume user want to monitor an active signal higher than 220v, to make sure not burn the photocoupler  
1204 1204  
... ... @@ -1207,24 +1207,34 @@
1207 1207  
1208 1208  So when sensor active, the current between NEC2501 pin1 and pin2 is:
1209 1209  
1210 - [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]][[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]][[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]]**[[image:image-20220524095628-8.png]] = DI1+ / 51K.**
1158 + //IF//[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image021.png]] = DI1+ / 51K.
1211 1211  
1212 -If sensor output is 220v, the (% id="cke_bm_243359S" style="display:none" %)[[image:image-20220524095628-8.png]](%%) = DI1+ / 51K.  = 4.3mA , So the LT-22222-L will be able to detect this high active signal safely.
1160 +If sensor output is 220v, the //IF//[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image022.png]] = 4.3mA , So the LT-22222-L will be able to detect this high active signal safely.
1213 1213  
1214 -=== 3.6.3 Digital Output Port: DO1/DO2 /DO3 ===
1215 1215  
1163 +1.
1164 +11.
1165 +111. Digital Output Port: DO1/DO2 /DO3
1166 +
1216 1216  NPN output: GND or Float. Max voltage can apply to output pin is 36v.
1217 1217  
1218 -[[image:1653357531600-905.png]]
1169 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image023.png]]
1219 1219  
1220 -=== 3.6.4 Analog Input Interface ===
1221 1221  
1172 +
1173 +
1174 +1.
1175 +11.
1176 +111. Analog Input Interface
1177 +
1222 1222  The analog input interface is as below. The LT will measure the IN2 voltage so to calculate the current pass the Load. The formula is:
1223 1223  
1224 -**AC2 = (IN2 voltage )/12**
1180 +AC2 = (IN2 voltage )/12
1225 1225  
1226 -[[image:1653357592296-182.png]]
1182 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image024.png]]
1227 1227  
1184 +
1185 +
1228 1228  Example to connect a 4~~20mA sensor
1229 1229  
1230 1230  We take the wind speed sensor as an example for reference only.
... ... @@ -1240,579 +1240,423 @@
1240 1240  
1241 1241  Connection diagram:
1242 1242  
1243 -[[image:1653357640609-758.png]]
1201 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image025.jpg]]
1244 1244  
1245 -[[image:1653357648330-671.png||height="155" width="733"]]
1203 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image026.png]]
1246 1246  
1247 -=== 3.6.5 Relay Output ===
1248 1248  
1249 -(((
1206 +
1207 +1.
1208 +11.
1209 +111. Relay Output
1210 +
1250 1250  The LT serial controller has two relay interfaces; each interface uses two pins of the screw terminal. User can connect other device’s Power Line to in serial of RO1_1 and RO_2. Such as below:
1251 -)))
1252 1252  
1253 -[[image:image-20220524100215-9.png]]
1213 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image027.png]]
1254 1254  
1255 -[[image:image-20220524100215-10.png||height="382" width="723"]]
1256 1256  
1257 -== 3.7 LEDs Indicators ==
1216 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image028.png]]
1258 1258  
1259 -[[image:image-20220524100748-11.png]]
1260 1260  
1261 -= 4. Use AT Command =
1262 1262  
1263 -== 4.1 Access AT Command ==
1264 1264  
1221 +
1222 +1.
1223 +11. LEDs Indicators
1224 +
1225 +(% border="1" style="background-color:#f7faff" %)
1226 +|**LEDs**|**Feature**
1227 +|**PWR**|Always on if there is power
1228 +|**SYS**|After device is powered on, the SYS will **fast blink in GREEN** for 5 times, means RS485-LN start to join LoRaWAN network. If join success, SYS will be **on GREEN for 5 seconds. **SYS will **blink Blue** on every upload and **blink Green** once receive a downlink message.
1229 +|**TX**|(((
1230 +Device boot: TX blinks 5 times.
1231 +
1232 +Successful join network: TX ON for 5 seconds.
1233 +
1234 +Transmit a LoRa packet: TX blinks once
1235 +)))
1236 +|**RX**|RX blinks once when receive a packet.
1237 +|**DO1**|
1238 +|**DO2**|
1239 +|**DO3**|
1240 +|**DI2**|(((
1241 +For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1242 +
1243 +For LT-33222-L: ON when DI2 is low, LOW when DI2 is high
1244 +)))
1245 +|**DI2**|(((
1246 +For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1247 +
1248 +For LT-33222-L: ON when DI2 is low, LOW when DI2 is high
1249 +)))
1250 +|**DI3**|For LT-33222-L ONLY: ON when DI3 is low, LOW when DI3 is high
1251 +|**DI2**|(((
1252 +For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1253 +
1254 +For LT-33222-L: ON when DI2 is low, LOW when DI2 is high
1255 +)))
1256 +|**RO1**|
1257 +|**RO2**|
1258 +
1259 +1. Use AT Command
1260 +11. Access AT Command
1261 +
1265 1265  LT supports AT Command set. User can use a USB to TTL adapter plus the 3.5mm Program Cable to connect to LT for using AT command, as below.
1266 1266  
1267 -[[image:1653358238933-385.png]]
1264 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image029.png]]
1268 1268  
1269 -In PC, User needs to set (% style="color:#4f81bd" %)**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 for LT. The AT commands are disable by default and need to enter password (default:(% style="color:green" %)**123456**)(%%) to active it. As shown below:
1270 1270  
1271 -[[image:1653358355238-883.png]]
1267 +In PC, User needs to set **serial tool**(such as [[putty>>url:https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]], SecureCRT) baud rate to **9600** to access to access serial console for LT. The AT commands are disable by default and need to enter password (default:**123456**) to active it. As shown below:
1272 1272  
1269 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image030.png]]
1270 +
1271 +
1273 1273  More detail AT Command manual can be found at [[AT Command Manual>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/]]
1274 1274  
1275 -(((
1276 1276  AT+<CMD>?        : Help on <CMD>
1277 -)))
1278 1278  
1279 -(((
1280 1280  AT+<CMD>         : Run <CMD>
1281 -)))
1282 1282  
1283 -(((
1284 1284  AT+<CMD>=<value> : Set the value
1285 -)))
1286 1286  
1287 -(((
1288 1288  AT+<CMD>=?       : Get the value
1289 -)))
1290 1290  
1291 -(((
1292 1292  ATZ: Trig a reset of the MCU
1293 -)))
1294 1294  
1295 -(((
1296 1296  AT+FDR: Reset Parameters to Factory Default, Keys Reserve 
1297 -)))
1298 1298  
1299 -(((
1300 1300  AT+DEUI: Get or Set the Device EUI
1301 -)))
1302 1302  
1303 -(((
1304 1304  AT+DADDR: Get or Set the Device Address
1305 -)))
1306 1306  
1307 -(((
1308 1308  AT+APPKEY: Get or Set the Application Key
1309 -)))
1310 1310  
1311 -(((
1312 1312  AT+NWKSKEY: Get or Set the Network Session Key
1313 -)))
1314 1314  
1315 -(((
1316 1316  AT+APPSKEY: Get or Set the Application Session Key
1317 -)))
1318 1318  
1319 -(((
1320 1320  AT+APPEUI: Get or Set the Application EUI
1321 -)))
1322 1322  
1323 -(((
1324 1324  AT+ADR: Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1325 -)))
1326 1326  
1327 -(((
1328 1328  AT+TXP: Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1329 -)))
1330 1330  
1331 -(((
1332 1332  AT+DR: Get or Set the Data Rate. (0-7 corresponding to DR_X)  
1333 -)))
1334 1334  
1335 -(((
1336 1336  AT+DCS: Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1337 -)))
1338 1338  
1339 -(((
1340 1340  AT+PNM: Get or Set the public network mode. (0: off, 1: on)
1341 -)))
1342 1342  
1343 -(((
1344 1344  AT+RX2FQ: Get or Set the Rx2 window frequency
1345 -)))
1346 1346  
1347 -(((
1348 1348  AT+RX2DR: Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1349 -)))
1350 1350  
1351 -(((
1352 1352  AT+RX1DL: Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1353 -)))
1354 1354  
1355 -(((
1356 1356  AT+RX2DL: Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1357 -)))
1358 1358  
1359 -(((
1360 1360  AT+JN1DL: Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1361 -)))
1362 1362  
1363 -(((
1364 1364  AT+JN2DL: Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1365 -)))
1366 1366  
1367 -(((
1368 1368  AT+NJM: Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1369 -)))
1370 1370  
1371 -(((
1372 1372  AT+NWKID: Get or Set the Network ID
1373 -)))
1374 1374  
1375 -(((
1376 1376  AT+FCU: Get or Set the Frame Counter Uplink
1377 -)))
1378 1378  
1379 -(((
1380 1380  AT+FCD: Get or Set the Frame Counter Downlink
1381 -)))
1382 1382  
1383 -(((
1384 1384  AT+CLASS: Get or Set the Device Class
1385 -)))
1386 1386  
1387 -(((
1388 1388  AT+JOIN: Join network
1389 -)))
1390 1390  
1391 -(((
1392 1392  AT+NJS: Get OTAA Join Status
1393 -)))
1394 1394  
1395 -(((
1396 1396  AT+SENDB: Send hexadecimal data along with the application port
1397 -)))
1398 1398  
1399 -(((
1400 1400  AT+SEND: Send text data along with the application port
1401 -)))
1402 1402  
1403 -(((
1404 1404  AT+RECVB: Print last received data in binary format (with hexadecimal values)
1405 -)))
1406 1406  
1407 -(((
1408 1408  AT+RECV: Print last received data in raw format
1409 -)))
1410 1410  
1411 -(((
1412 1412  AT+VER: Get current image version and Frequency Band
1413 -)))
1414 1414  
1415 -(((
1416 1416  AT+CFM: Get or Set the confirmation mode (0-1)
1417 -)))
1418 1418  
1419 -(((
1420 1420  AT+CFS: Get confirmation status of the last AT+SEND (0-1)
1421 -)))
1422 1422  
1423 -(((
1424 1424  AT+SNR: Get the SNR of the last received packet
1425 -)))
1426 1426  
1427 -(((
1428 1428  AT+RSSI: Get the RSSI of the last received packet
1429 -)))
1430 1430  
1431 -(((
1432 1432  AT+TDC: Get or set the application data transmission interval in ms
1433 -)))
1434 1434  
1435 -(((
1436 1436  AT+PORT: Get or set the application port
1437 -)))
1438 1438  
1439 -(((
1440 1440  AT+DISAT: Disable AT commands
1441 -)))
1442 1442  
1443 -(((
1444 1444  AT+PWORD: Set password, max 9 digits
1445 -)))
1446 1446  
1447 -(((
1448 1448  AT+CHS: Get or Set Frequency (Unit: Hz) for Single Channel Mode
1449 -)))
1450 1450  
1451 -(((
1452 1452  AT+CHE: Get or Set eight channels mode, Only for US915, AU915, CN470
1453 -)))
1454 1454  
1455 -(((
1456 1456  AT+CFG: Print all settings
1457 -)))
1458 1458  
1459 -== 4.2 Common AT Command Sequence ==
1460 1460  
1461 -=== 4.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
1462 1462  
1463 -(((
1368 +1.
1369 +11. Common AT Command Sequence
1370 +111. Multi-channel ABP mode (Use with SX1301/LG308)
1371 +
1464 1464  If device has not joined network yet:
1465 -)))
1466 1466  
1467 -(((
1468 -(% style="background-color:#dcdcdc" %)123456
1469 -)))
1374 +123456
1470 1470  
1471 -(((
1472 -(% style="background-color:#dcdcdc" %)AT+FDR
1473 -)))
1376 +AT+FDR
1474 1474  
1475 -(((
1476 -(% style="background-color:#dcdcdc" %)123456
1477 -)))
1378 +123456
1478 1478  
1479 -(((
1480 -(% style="background-color:#dcdcdc" %)AT+NJM=0
1481 -)))
1380 +AT+NJM=0
1482 1482  
1483 -(((
1484 -(% style="background-color:#dcdcdc" %)ATZ
1485 -)))
1382 +ATZ
1486 1486  
1487 1487  
1488 -(((
1489 1489  If device already joined network:
1490 -)))
1491 1491  
1492 -(((
1493 -(% style="background-color:#dcdcdc" %)AT+NJM=0
1494 -)))
1387 +AT+NJM=0
1495 1495  
1496 -(((
1497 -(% style="background-color:#dcdcdc" %)ATZ
1498 -)))
1389 +ATZ
1499 1499  
1500 -=== 4.2.2 Single-channel ABP mode (Use with LG01/LG02) ===
1391 +1.
1392 +11.
1393 +111. Single-channel ABP mode (Use with LG01/LG02)
1501 1501  
1502 -(((
1503 -(% style="background-color:#dcdcdc" %) 123456(%%)   Enter Password to have AT access.
1504 -)))
1395 +123456   Enter Password to have AT access.
1505 1505  
1506 -(((
1507 -(% style="background-color:#dcdcdc" %) AT+FDR(%%)   Reset Parameters to Factory Default, Keys Reserve
1508 -)))
1397 +AT+FDR   Reset Parameters to Factory Default, Keys Reserve
1509 1509  
1510 -(((
1511 -(% style="background-color:#dcdcdc" %) 123456(%%)   Enter Password to have AT access.
1512 -)))
1399 +123456   Enter Password to have AT access.
1513 1513  
1514 -(((
1515 -(% style="background-color:#dcdcdc" %) AT+CLASS=C(%%) Set to work in CLASS C
1516 -)))
1401 +AT+CLASS=C Set to work in CLASS C
1517 1517  
1518 -(((
1519 -(% style="background-color:#dcdcdc" %) AT+NJM=0(%%) Set to ABP mode
1520 -)))
1403 +AT+NJM=0 Set to ABP mode
1521 1521  
1522 -(((
1523 -(% style="background-color:#dcdcdc" %) AT+ADR=0(%%) Set the Adaptive Data Rate Off
1524 -)))
1405 +AT+ADR=0 Set the Adaptive Data Rate Off
1525 1525  
1526 -(((
1527 -(% style="background-color:#dcdcdc" %) AT+DR=5(%%)  Set Data Rate
1528 -)))
1407 +AT+DR=5  Set Data Rate
1529 1529  
1530 -(((
1531 -(% style="background-color:#dcdcdc" %) AT+TDC=60000(%%)  Set transmit interval to 60 seconds
1532 -)))
1409 +AT+TDC=60000  Set transmit interval to 60 seconds
1533 1533  
1534 -(((
1535 -(% style="background-color:#dcdcdc" %) AT+CHS=868400000(%%) Set transmit frequency to 868.4Mhz
1536 -)))
1411 +AT+CHS=868400000 Set transmit frequency to 868.4Mhz
1537 1537  
1538 -(((
1539 -(% style="background-color:#dcdcdc" %) AT+RX2FQ=868400000(%%) Set RX2Frequency to 868.4Mhz (according to the result from server)
1540 -)))
1413 +AT+RX2FQ=868400000 Set RX2Frequency to 868.4Mhz (according to the result from server)
1541 1541  
1542 -(((
1543 -(% style="background-color:#dcdcdc" %) AT+RX2DR=5(%%)  Set RX2DR to match the downlink DR from server. see below
1544 -)))
1415 +AT+RX2DR=5  Set RX2DR to match the downlink DR from server. see below
1545 1545  
1546 -(((
1547 -(% style="background-color:#dcdcdc" %) AT+DADDR=26 01 1A F1 (%%)Set Device Address to 26 01 1A F1, this ID can be found in the LoRa Server portal.
1548 -)))
1417 +AT+DADDR=26 01 1A F1 Set Device Address to 26 01 1A F1, this ID can be found in the LoRa Server portal.
1549 1549  
1550 -(((
1551 -(% style="background-color:#dcdcdc" %) ATZ         (%%) Reset MCU
1552 -)))
1419 +ATZ          Reset MCU
1553 1553  
1554 -(((
1555 -(% style="color:red" %)**Note:**
1556 -)))
1421 +**Note:**
1557 1557  
1558 -(((
1559 -(% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server.
1560 -2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
1561 -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.
1562 -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
1563 -)))
1423 +1. Make sure the device is set to ABP mode in the IoT Server.
1424 +1. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
1425 +1. 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.
1426 +1. 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
1564 1564  
1565 -(((
1566 -[[image:1653359097980-169.png||height="188" width="729"]]
1567 -)))
1428 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image031.png]]
1568 1568  
1569 -(((
1570 -
1571 -)))
1572 1572  
1573 -=== 4.2.3 Change to Class A ===
1431 +1.
1432 +11.
1433 +111. Change to Class A
1574 1574  
1575 1575  If sensor JOINED
1576 -(% style="background-color:#dcdcdc" %)AT+CLASS=A
1436 +
1437 +AT+CLASS=A
1438 +
1577 1577  ATZ
1578 1578  
1579 -= 5. FAQ =
1580 1580  
1581 -== 5.1 How to upgrade the image? ==
1582 1582  
1443 +
1444 +
1445 +1. FAQ
1446 +
1447 +1.
1448 +11. How to upgrade the image?
1449 +
1583 1583  The LT LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to LT to:
1584 1584  
1585 1585  * Support new features
1586 1586  * For bug fix
1587 1587  * Change LoRaWAN bands.
1455 +
1588 1588  Below shows the hardware connection for how to upload an image to the LT:
1589 -* [[image:1653359603330-121.png]]
1590 1590  
1458 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image029.png]]
1459 +
1460 +
1591 1591  **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]].
1462 +
1592 1592  **Step2**: Download the [[LT Image files>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]].
1464 +
1593 1593  **Step3: **Open flashloader; choose the correct COM port to update.
1594 -**For LT-22222-L**:
1595 -Hold down the PRO button and then momentarily press the RST reset button and the **DO1 led** will change from OFF to ON. When **DO1 LED** is on, it means the device is in download mode.
1596 1596  
1597 - [[image:image-20220524103407-12.png]]
1467 +**For LT-33222-L**:
1598 1598  
1599 -[[image:image-20220524103429-13.png]]
1469 +Hold down the PRO button and then momentarily press the RST reset button and the **DO2 led** will change from OFF to ON. When **DO2 LED** is on, it means the device is in download mode.
1600 1600  
1601 -[[image:image-20220524104033-15.png]]
1471 +**For LT-22222-L**:
1602 1602  
1603 -(% style="color:red" %)**Notice**(%%): In case user has lost the program cable. User can hand made one from a 3.5mm cable. The pin mapping is:
1473 +Hold down the PRO button and then momentarily press the RST reset button and the **DO1 led** will change from OFF to ON. When **DO1 LED** is on, it means the device is in download mode.
1604 1604  
1605 -[[image:1653360054704-518.png||height="186" width="745"]]
1606 1606  
1607 -(((
1608 -(((
1609 -== 5.2 How to change the LoRa Frequency Bands/Region? ==
1610 -)))
1611 -)))
1612 1612  
1613 -(((
1614 -User can follow the introduction for [[how to upgrade image>>path:http://8.211.40.43:8080/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/#H5.1Howtoupgradetheimage3F]]. When download the images, choose the required image file for download.
1477 +|(((
1478 +Board detected
1615 1615  )))
1616 1616  
1617 -(((
1618 -== 5.3 How to set up LT to work with Single Channel Gateway such as LG01/LG02? ==
1481 +|(((
1482 +
1619 1619  )))
1620 1620  
1621 -(((
1622 -(((
1485 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image032.png]] [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image033.png]]
1486 +
1487 +
1488 +
1489 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image034.png]] [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image035.png]]
1490 +
1491 +
1492 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image036.png]] [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image037.png]]
1493 +
1494 +
1495 +**Notice**: In case user has lost the program cable. User can hand made one from a 3.5mm cable. The pin mapping is:
1496 +
1497 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image038.png]]
1498 +
1499 +
1500 +1.
1501 +11. How to change the LoRa Frequency Bands/Region?
1502 +
1503 +User can follow the introduction for [[how to upgrade image>>path:#upgrade_image]]. When download the images, choose the required image file for download.
1504 +
1505 +
1506 +1.
1507 +11. How to set up LT to work with Single Channel Gateway such as LG01/LG02?
1508 +
1623 1623  In this case, users need to set LT-33222-L to work in ABP mode & transmit in only one frequency.
1624 -)))
1625 -)))
1626 1626  
1627 -(((
1628 -(((
1629 1629  Assume we have a LG02 working in the frequency 868400000 now , below is the step.
1630 -)))
1631 -)))
1632 1632  
1633 -(((
1634 -(% style="color:#4f81bd" %)**Step1**(%%): Log in TTN, Create an ABP device in the application and input the network session key (NETSKEY), app session key (APPSKEY) from the device.
1635 -)))
1636 1636  
1637 -(((
1638 -[[image:1653360231087-571.png||height="401" width="727"]]
1639 -)))
1514 +**Step1**: Log in TTN, Create an ABP device in the application and input the network session key (NETSKEY), app session key (APPSKEY) from the device.
1640 1640  
1641 -(% style="color:red" %)Note: user just need to make sure above three keys match, User can change either in TTN or Device to make then match. In TTN, NETSKEY and APPSKEY can be configured by user in setting page, but Device Addr is generated by TTN.
1516 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image039.png]]
1642 1642  
1643 -(% style="color:#4f81bd" %)**Step2**(%%)**: **Run AT Command to make LT work in Single frequency & ABP mode. Below is the AT commands:
1518 +Note: user just need to make sure above three keys match, User can change either in TTN or Device to make then match. In TTN, NETSKEY and APPSKEY can be configured by user in setting page, but Device Addr is generated by TTN.
1644 1644  
1645 -(% style="background-color:#dcdcdc" %)123456 (%%) Enter Password to have AT access.
1646 -(% style="background-color:#dcdcdc" %)AT+FDR  (%%) Reset Parameters to Factory Default, Keys Reserve
1647 -(% style="background-color:#dcdcdc" %)123456  (%%) Enter Password to have AT access.
1648 -(% style="background-color:#dcdcdc" %)AT+NJM=0 (%%)Set to ABP mode
1649 -(% style="background-color:#dcdcdc" %)AT+ADR=0 (%%)Set the Adaptive Data Rate Off
1650 -(% style="background-color:#dcdcdc" %)AT+DR=5 (%%) Set Data Rate (Set AT+DR=3 for 915 band)
1651 -(% style="background-color:#dcdcdc" %)AT+TDC=60000  (%%)Set transmit interval to 60 seconds
1652 -(% style="background-color:#dcdcdc" %)AT+CHS=868400000 (%%)Set transmit frequency to 868.4Mhz
1653 -(% style="background-color:#dcdcdc" %)AT+DADDR=26 01 1A F1(%%) Set Device Address to 26 01 1A F1
1654 -(% style="background-color:#dcdcdc" %)ATZ                (%%)Reset MCU
1655 1655  
1521 +**Step2: **Run AT Command to make LT work in Single frequency & ABP mode. Below is the AT commands:
1522 +
1523 +123456   Enter Password to have AT access.
1524 +
1525 +AT+FDR   Reset Parameters to Factory Default, Keys Reserve
1526 +
1527 +123456   Enter Password to have AT access.
1528 +
1529 +AT+NJM=0 Set to ABP mode
1530 +
1531 +AT+ADR=0 Set the Adaptive Data Rate Off
1532 +
1533 +AT+DR=5  Set Data Rate (Set AT+DR=3 for 915 band)
1534 +
1535 +AT+TDC=60000  Set transmit interval to 60 seconds
1536 +
1537 +AT+CHS=868400000 Set transmit frequency to 868.4Mhz
1538 +
1539 +AT+DADDR=26 01 1A F1 Set Device Address to 26 01 1A F1
1540 +
1541 +ATZ                Reset MCU
1542 +
1656 1656  As shown in below:
1657 1657  
1658 -[[image:1653360498588-932.png||height="485" width="726"]]
1545 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image040.png]]
1659 1659  
1660 -== 5.4 Can I see counting event in Serial? ==
1661 1661  
1662 -(((
1548 +
1549 +1.
1550 +11. Can I see counting event in Serial?
1551 +
1663 1663  User can run AT+DEBUG command to see the counting event in serial. If firmware too old and doesn’t support AT+DEBUG. User can update to latest firmware first.
1664 -)))
1665 1665  
1666 -(((
1667 -= 6. Trouble Shooting =
1668 -)))
1669 1669  
1670 -(((
1671 -(((
1672 -== 6.1 Downlink doesn’t work, how to solve it? ==
1673 -)))
1674 -)))
1675 1675  
1676 -(((
1677 -Please see this link for how to debug:
1678 1678  
1679 -[[http:~~/~~/8.211.40.43:8080/xwiki/bin/view/Main/LoRaWAN%20Communication%20Debug/>>http://8.211.40.43:8080/xwiki/bin/view/Main/LoRaWAN%20Communication%20Debug/]]
1680 -)))
1557 +1. Trouble Shooting     
1558 +11. Downlink doesn’t work, how to solve it?
1681 1681  
1682 -(((
1560 +Please see this link for how to debug:
1561 +
1683 1683  [[http:~~/~~/wiki.dragino.com/index.php?title=LoRaWAN_Communication_Debug#How_it_work>>url:http://wiki.dragino.com/index.php?title=LoRaWAN_Communication_Debug#How_it_work]]
1684 -)))
1685 1685  
1686 -(((
1687 -== 6.2 Have trouble to upload image. ==
1688 -)))
1689 1689  
1690 -(((
1565 +1.
1566 +11. Have trouble to upload image.
1567 +
1691 1691  See this link for trouble shooting:
1692 -)))
1693 1693  
1694 -(((
1695 1695  [[http:~~/~~/wiki.dragino.com/index.php?title=Firmware_Upgrade_Trouble_Shooting#UART_upgrade_trouble_shooting>>url:http://wiki.dragino.com/index.php?title=Firmware_Upgrade_Trouble_Shooting#UART_upgrade_trouble_shooting]]
1696 -)))
1697 1697  
1698 -(((
1699 -== 6.3 Why I can’t join TTN in US915 /AU915 bands? ==
1700 -)))
1701 1701  
1702 -(((
1573 +1.
1574 +11. Why I can’t join TTN in US915 /AU915 bands?
1575 +
1703 1703  It might be about the channels mapping. Please see this link for detail:
1704 -)))
1705 1705  
1706 -(((
1707 1707  [[http:~~/~~/wiki.dragino.com/index.php?title=LoRaWAN_Communication_Debug#Notice_of_US915.2FCN470.2FAU915_Frequency_band>>url:http://wiki.dragino.com/index.php?title=LoRaWAN_Communication_Debug#Notice_of_US915.2FCN470.2FAU915_Frequency_band]]
1708 -)))
1709 1709  
1710 -(((
1711 -= 7. Order Info =
1712 -)))
1713 1713  
1714 -(((
1715 -(((
1716 -(% style="color:#4f81bd" %)**LT-22222-L-XXX:**
1717 -)))
1718 -)))
1719 1719  
1720 -(((
1721 -(((
1722 -(% style="color:#4f81bd" %)**XXX:**
1723 -)))
1724 -)))
1725 1725  
1726 -* (((
1727 -(% style="color:#4f81bd" %)**EU433**(%%): LT with frequency bands EU433
1728 -)))
1729 -* (((
1730 -(% style="color:#4f81bd" %)**EU868**(%%): LT with frequency bands EU868
1731 -)))
1732 -* (((
1733 -(% style="color:#4f81bd" %)**KR920**(%%): LT with frequency bands KR920
1734 -)))
1735 -* (((
1736 -(% style="color:#4f81bd" %)**CN470**(%%): LT with frequency bands CN470
1737 -)))
1738 -* (((
1739 -(% style="color:#4f81bd" %)**AS923**(%%): LT with frequency bands AS923
1740 -)))
1741 -* (((
1742 -(% style="color:#4f81bd" %)**AU915**(%%): LT with frequency bands AU915
1743 -)))
1744 -* (((
1745 -(% style="color:#4f81bd" %)**US915**(%%): LT with frequency bands US915
1746 -)))
1747 -* (((
1748 -(% style="color:#4f81bd" %)**IN865**(%%): LT with frequency bands IN865
1749 -)))
1583 +1. Order Info
1750 1750  
1751 -(((
1752 -* (% style="color:#4f81bd" %)**CN779**(%%): LT with frequency bands CN779
1585 +**For LT-33222-L-XXX or LT-22222-L-XXX:**
1753 1753  
1754 -= 8. Packing Info =
1755 -)))
1587 +**XXX:**
1756 1756  
1757 -(((
1758 -(((
1589 +* **EU433**: LT with frequency bands EU433
1590 +* **EU868**: LT with frequency bands EU868
1591 +* **KR920**: LT with frequency bands KR920
1592 +* **CN470**: LT with frequency bands CN470
1593 +* **AS923**: LT with frequency bands AS923
1594 +* **AU915**: LT with frequency bands AU915
1595 +* **US915**: LT with frequency bands US915
1596 +* **IN865**: LT with frequency bands IN865
1597 +* **CN779**: LT with frequency bands CN779
1598 +
1599 +1. Packing Info
1600 +
1759 1759  **Package Includes**:
1760 -)))
1761 -)))
1762 1762  
1763 -(((
1764 -(((
1765 -* LT-22222-L I/O Controller x 1
1603 +* LT I/O Controller x 1
1766 1766  * Stick Antenna for LoRa RF part x 1
1767 1767  * Bracket for controller x1
1768 1768  * Program cable x 1
1769 -)))
1770 -)))
1771 1771  
1772 -(((
1773 -(((
1774 1774  **Dimension and weight**:
1775 -)))
1776 -)))
1777 1777  
1778 -(((
1779 -(((
1780 1780  * Device Size: 13.5 x 7 x 3 cm
1781 1781  * Device Weight: 105g
1782 1782  * Package Size / pcs : 14.5 x 8 x 5 cm
1783 1783  * Weight / pcs : 170g
1784 -)))
1785 -)))
1786 1786  
1787 -(((
1788 -= 9. Support =
1789 -)))
1615 +1. Support
1790 1790  
1791 -* (((
1792 -(((
1793 -Support is provided Monday to Friday, from 09:00 to 18:00 GMT+8. Due to different timezones we cannot offer live support. However, your questions will be answered as soon as possible in the before-mentioned schedule.
1794 -)))
1795 -)))
1796 -* (((
1797 -(((
1798 -Provide as much information as possible regarding your enquiry (product models, accurately describe your problem and steps to replicate it etc) and send a mail to
1799 -)))
1800 -)))
1617 +* Support is provided Monday to Friday, from 09:00 to 18:00 GMT+8. Due to different timezones we cannot offer live support. However, your questions will be answered as soon as possible in the before-mentioned schedule.
1618 +* Provide as much information as possible regarding your enquiry (product models, accurately describe your problem and steps to replicate it etc) and send a mail to
1801 1801  
1802 -(((
1803 -(((
1804 - [[support@dragino.com>>url:file:///D:/市场资料/说明书/LoRa/LT系列/support@dragino.com]]
1805 -)))
1806 -
1807 -(((
1808 -= 10. Reference​​​​​ =
1809 -
1810 -* Product Page:
1811 -
1812 -LT-22222-L: [[http:~~/~~/www.dragino.com/products/lora-lorawan-end-node/item/156-lt-22222-l.html>>url:http://www.dragino.com/products/lora-lorawan-end-node/item/156-lt-22222-l.html]]
1813 -
1814 -* [[Image Download>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]]
1815 -* [[AT Command Manual>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/]]
1816 -* [[Hardware Source>>url:https://github.com/dragino/Lora/tree/master/LT/LT-33222-L/v1.0]]
1817 -)))
1818 -)))
1620 +[[support@dragino.com>>url:file:///D:/市场资料/说明书/LoRa/LT系列/support@dragino.com]]
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