Last modified by Saxer Lin on 2025/04/15 17:24
<
From version < 188.1 >
edited by Bei Jinggeng
on 2024/11/11 09:50
To version < 193.1 >
edited by Dilisi S
on 2024/11/14 05:28
>
Change comment: Nov 13 edits part 2

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Author
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1 -XWiki.Bei
1 +XWiki.pradeeka
Content
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111 111  * Smart cities
112 112  * Smart factory
113 113  
114 -== 1.5 Hardware Variants ==
115 -
116 -
117 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:500px" %)
118 -|(% style="background-color:#4f81bd; color:white; width:103px" %)**Model**|(% style="background-color:#4f81bd; color:white; width:131px" %)**Photo**|(% style="background-color:#4f81bd; color:white; width:266px" %)**Description**
119 -|(% style="width:103px" %)**LT22222-L**|(% style="width:131px" %)(((
120 -(% style="text-align:center" %)
121 -[[image:image-20230424115112-1.png||height="106" width="58"]]
122 -)))|(% style="width:334px" %)(((
123 -* 2 x Digital Input (Bi-direction)
124 -* 2 x Digital Output
125 -* 2 x Relay Output (5A@250VAC / 30VDC)
126 -* 2 x 0~~20mA Analog Input (res:0.01mA)
127 -* 2 x 0~~30V Analog Input (res:0.01v)
128 -* 1 x Counting Port
129 -)))
130 -
131 131  = 2. Assembling the device =
132 132  
133 133  == 2.1 Connecting the antenna ==
... ... @@ -1811,7 +1811,7 @@
1811 1811  )))
1812 1812  
1813 1813  (((
1814 -The following is the list of all the AT commands related to the LT-22222-L, except for those used for switching between work modes.
1797 +The following is the list of all the AT commands related to the LT-22222-L, except for those used for switching between working modes.
1815 1815  
1816 1816  * AT+<CMD>? : Help on <CMD>
1817 1817  * AT+<CMD> : Run <CMD>
... ... @@ -1870,28 +1870,28 @@
1870 1870  
1871 1871  
1872 1872  (((
1873 -(% style="color:blue" %)**If the device has not joined the network yet:**
1856 +(% style="color:blue" %)**If the device has not yet joined the network:**
1874 1874  )))
1875 1875  )))
1876 1876  
1877 1877  (((
1878 -(% style="background-color:#dcdcdc" %)##**123456 ~/~/enable AT commands access**##
1861 +(% style="background-color:#dcdcdc" %)##**123456 ~/~/Enter the password to enable AT commands access**##
1879 1879  )))
1880 1880  
1881 1881  (((
1882 -(% style="background-color:#dcdcdc" %)##**AT+FDR ~/~/reset parameters to factory default, reserve keys**##
1865 +(% style="background-color:#dcdcdc" %)##**AT+FDR ~/~/Reset parameters to factory default, Reserve keys**##
1883 1883  )))
1884 1884  
1885 1885  (((
1886 -(% style="background-color:#dcdcdc" %)##**123456 ~/~/enable AT commands access**##
1869 +(% style="background-color:#dcdcdc" %)##**123456 ~/~/Enter the password to enable AT commands access**##
1887 1887  )))
1888 1888  
1889 1889  (((
1890 -(% style="background-color:#dcdcdc" %)##**AT+NJM=0 ~/~/set to ABP mode**##
1873 +(% style="background-color:#dcdcdc" %)##**AT+NJM=0 ~/~/Set to ABP mode**##
1891 1891  )))
1892 1892  
1893 1893  (((
1894 -(% style="background-color:#dcdcdc" %)##**ATZ ~/~/reset MCU**##
1877 +(% style="background-color:#dcdcdc" %)##**ATZ ~/~/Reset MCU**##
1895 1895  )))
1896 1896  
1897 1897  
... ... @@ -1914,20 +1914,20 @@
1914 1914  
1915 1915  
1916 1916  (((
1917 -(% style="background-color:#dcdcdc" %)**123456**(%%)  ~/~/ Enter Password to have AT access.
1900 +(% style="background-color:#dcdcdc" %)**123456**(%%)  ~/~/ Enter password to enable AT commands access
1918 1918  )))
1919 1919  )))
1920 1920  
1921 1921  (((
1922 -(% style="background-color:#dcdcdc" %)** AT+FDR**(%%)  ~/~/ Reset Parameters to Factory Default, Keys Reserve
1905 +(% style="background-color:#dcdcdc" %)** AT+FDR**(%%)  ~/~/ Reset parameters to Factory Default, Reserve keys
1923 1923  )))
1924 1924  
1925 1925  (((
1926 -(% style="background-color:#dcdcdc" %)** 123456**(%%)  ~/~/ Enter Password to have AT access.
1909 +(% style="background-color:#dcdcdc" %)** 123456**(%%)  ~/~/ Enter password to enable AT commands access
1927 1927  )))
1928 1928  
1929 1929  (((
1930 -(% style="background-color:#dcdcdc" %)** AT+CLASS=C**(%%)  ~/~/ Set to work in CLASS C
1913 +(% style="background-color:#dcdcdc" %)** AT+CLASS=C**(%%)  ~/~/ Set to CLASS C mode
1931 1931  )))
1932 1932  
1933 1933  (((
... ... @@ -1947,19 +1947,19 @@
1947 1947  )))
1948 1948  
1949 1949  (((
1950 -(% style="background-color:#dcdcdc" %)** AT+CHS=868400000**(%%)  ~/~/ Set transmit frequency to 868.4Mhz
1933 +(% style="background-color:#dcdcdc" %)** AT+CHS=868400000**(%%)  ~/~/ Set transmit frequency to 868.4 MHz
1951 1951  )))
1952 1952  
1953 1953  (((
1954 -(% style="background-color:#dcdcdc" %)** AT+RX2FQ=868400000**(%%)  ~/~/ Set RX2Frequency to 868.4Mhz (according to the result from server)
1937 +(% style="background-color:#dcdcdc" %)** AT+RX2FQ=868400000**(%%)  ~/~/ Set RX2 frequency to 868.4 MHz (according to the result from the server)
1955 1955  )))
1956 1956  
1957 1957  (((
1958 -(% style="background-color:#dcdcdc" %)** AT+RX2DR=5**(%%)** ** ~/~/ Set RX2DR to match the downlink DR from server. see below
1941 +(% style="background-color:#dcdcdc" %)** AT+RX2DR=5**(%%)** ** ~/~/ Set RX2 DR to match the downlink DR from the server. See below.
1959 1959  )))
1960 1960  
1961 1961  (((
1962 -(% 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.
1945 +(% style="background-color:#dcdcdc" %)** AT+DADDR=26 01 1A F1** (%%) ~/~/ Set Device Address. The Device Address can be found in the application on the LoRaWAN NS.
1963 1963  )))
1964 1964  
1965 1965  (((
... ... @@ -1973,14 +1973,14 @@
1973 1973  )))
1974 1974  
1975 1975  (((
1976 -**~1. Make sure the device is set to ABP mode in the IoT Server.**
1959 +**~1. Ensure that the device is set to ABP mode in the LoRaWAN Network Server.**
1977 1977  
1978 -**2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.**
1961 +**2. Verify that the LG01/02 gateway RX frequency matches the AT+CHS setting exactly.**
1979 1979  
1980 -**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?
1963 +**3. Make sure the SF/bandwidth settings in the LG01/LG02 match the settings of AT+DR. Refer to [[this link>>url:http://www.dragino.com/downloads/index.php?
1981 1981  dir=LoRa_Gateway/&file=LoRaWAN%201.0.3%20Regional%20Parameters.xlsx]] to see what DR means.**
1982 1982  
1983 -**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.**
1966 +**4. The commands AT+RX2FQ and AT+RX2DR enable downlink functionality. To set the correct parameters, you can check the actual downlink parameters to be used as shown below. Here, RX2FQ should be set to 868400000 and RX2DR should be set to 5.**
1984 1984  )))
1985 1985  
1986 1986  (((
... ... @@ -2014,10 +2014,8 @@
2014 2014  
2015 2015  == 6.1 How to update the firmware? ==
2016 2016  
2017 -Dragino frequently releases firmware updates for the LT-22222-L.
2000 +Dragino frequently releases firmware updates for the LT-22222-L. Updating your LT-22222-L with the latest firmware version helps to:
2018 2018  
2019 -Updating your LT-22222-L with the latest firmware version helps to:
2020 -
2021 2021  * Support new features
2022 2022  * Fix bugs
2023 2023  * Change LoRaWAN frequency bands
... ... @@ -2035,8 +2035,8 @@
2035 2035  
2036 2036  Below is the hardware setup for uploading a firmware image to the LT-22222-L:
2037 2037  
2019 +[[image:usb-ttl-programming.png]]
2038 2038  
2039 -[[image:1653359603330-121.png]]
2040 2040  
2041 2041  
2042 2042  Start the STM32 Flash Loader and choose the correct COM port to update.
... ... @@ -2060,7 +2060,7 @@
2060 2060  [[image:image-20220524104033-15.png]]
2061 2061  
2062 2062  
2063 -(% style="color:red" %)**Note**(%%): If you have lost the programming cable, you can make one from a 3.5mm cable. The pin mapping is as follows:
2044 +(% style="color:red" %)**Note**(%%): If you have lost the programming cable, you can make one from a 3.5 mm cable. The pin mapping is as follows:
2064 2064  
2065 2065  [[image:1653360054704-518.png||height="186" width="745"]]
2066 2066  
... ... @@ -2078,18 +2078,18 @@
2078 2078  (((
2079 2079  
2080 2080  
2081 -== 6.3 How to setup LT to work with a Single Channel Gateway, such as LG01/LG02? ==
2062 +== 6.3 How to setup LT-22222-L to work with a Single Channel Gateway, such as LG01/LG02? ==
2082 2082  )))
2083 2083  
2084 2084  (((
2085 2085  (((
2086 -In this case, you need to set the LT-33222-L to work in ABP mode and transmit on only one frequency.
2067 +In this case, you need to set the LT-22222-L to work in ABP mode and transmit on only one frequency.
2087 2087  )))
2088 2088  )))
2089 2089  
2090 2090  (((
2091 2091  (((
2092 -Assume you have an LG02 working on the frequency 868400000. Below are the steps.
2073 +We assume you have an LG01/LG02 working on the frequency 868400000. Below are the steps.
2093 2093  
2094 2094  
2095 2095  )))
... ... @@ -2096,52 +2096,55 @@
2096 2096  )))
2097 2097  
2098 2098  (((
2099 -(% style="color:#0000ff" %)**Step 1**(%%):  Log in to The Things Stack SANDBOX, create an ABP device in the application, and input the Network Session key (NwkSKey), App session key (AppSKey) of the device.
2080 +(% style="color:#0000ff" %)**Step 1**(%%): Log in to The Things Stack Sandbox account and create an ABP device in the application. To do this, use the manual registration option as explained in section 3.2.2.2, //Adding a Device Manually//. Select //Activation by Personalization (ABP)// under Activation Mode. Enter the DevEUI exactly as shown on the registration information sticker, then generate the Device Address, Application Session Key (AppSKey), and Network Session Key (NwkSKey).
2100 2100  
2101 -
2082 +[[image:lt-22222-l-abp.png||height="686" width="1000"]]
2102 2102  )))
2103 2103  
2104 2104  (((
2105 -[[image:1653360231087-571.png||height="401" width="727"]]
2106 -
2107 2107  
2108 2108  )))
2109 2109  
2110 -(((
2111 -(% 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.**
2112 -)))
2089 +{{warning}}
2090 +Ensure that the Device Address (DevAddr) and the two keys match between the LT-22222-L and The Things Stack. You can modify them either in The Things Stack or on the LT-22222-L to make them align. In The Things Stack, you can configure the NwkSKey and AppSKey on the settings page, but note that the Device Address is generated by The Things Stack.
2091 +{{/warning}}
2113 2113  
2114 2114  
2115 -
2116 2116  (((
2117 -(% style="color:blue" %)**Step2**(%%)**:  **Run AT Command to make LT work in Single frequency & ABP mode. Below is the AT commands:
2095 +(% style="color:blue" %)**Step 2**(%%)**:  **(% style="color:#000000; font-family:Arial,sans-serif; font-size:11pt; font-style:normal; font-variant-alternates:normal; font-variant-east-asian:normal; font-variant-ligatures:normal; font-variant-numeric:normal; font-variant-position:normal; font-weight:400; text-decoration:none; white-space:pre-wrap" %)Run AT commands to configure the LT-22222-L to operate in single-frequency and ABP mode. The AT commands are as follows:
2118 2118  
2119 2119  
2120 2120  )))
2121 2121  
2122 2122  (((
2123 -(% style="background-color:#dcdcdc" %)**123456** (%%) :  Enter Password to have AT access.
2101 +(% style="background-color:#dcdcdc" %)**123456** (%%) : Enter the password to enable AT access.
2124 2124  
2125 -(% style="background-color:#dcdcdc" %)**AT+FDR**(%%)  :  Reset Parameters to Factory Default, Keys Reserve
2103 +(% style="background-color:#dcdcdc" %)**AT+FDR**(%%) : Reset parameters to factory default, keeping keys reserved.
2126 2126  
2127 -(% style="background-color:#dcdcdc" %)**AT+NJM=0** (%%) :  Set to ABP mode
2105 +(% style="background-color:#dcdcdc" %)**AT+NJM=0** (%%) : Set to ABP mode.
2128 2128  
2129 -(% style="background-color:#dcdcdc" %)**AT+ADR=0** (%%) :  Set the Adaptive Data Rate Off
2107 +(% style="background-color:#dcdcdc" %)**AT+ADR=0** (%%) : Disable the Adaptive Data Rate (ADR).
2130 2130  
2131 -(% style="background-color:#dcdcdc" %)**AT+DR=5** (%%) :  Set Data Rate (Set AT+DR=3 for 915 band)
2109 +(% style="background-color:#dcdcdc" %)**AT+DR=5** (%%) : Set Data Rate (Use AT+DR=3 for the 915 MHz band).
2132 2132  
2133 -(% style="background-color:#dcdcdc" %)**AT+TDC=60000 **(%%) :  Set transmit interval to 60 seconds
2111 +(% style="background-color:#dcdcdc" %)**AT+TDC=60000 **(%%) : Set transmit interval to 60 seconds.
2134 2134  
2135 -(% style="background-color:#dcdcdc" %)**AT+CHS=868400000**(%%) : Set transmit frequency to 868.4Mhz
2113 +(% style="background-color:#dcdcdc" %)**AT+CHS=868400000**(%%) : Set transmit frequency to 868.4 MHz.
2136 2136  
2137 -(% style="background-color:#dcdcdc" %)**AT+DADDR=26 01 1A F1**(%%)  :  Set Device Address to 26 01 1A F1
2115 +(% style="background-color:#dcdcdc" %)**AT+DADDR=xxxx**(%%) : Set the Device Address (DevAddr)
2138 2138  
2139 -(% style="background-color:#dcdcdc" %)**ATZ**        (%%) :  Reset MCU
2117 +(% style="color:#000000; font-family:Arial,sans-serif; font-size:11pt; font-style:normal; font-variant-alternates:normal; font-variant-east-asian:normal; font-variant-ligatures:normal; font-variant-numeric:normal; font-variant-position:normal; font-weight:700; text-decoration:none; white-space:pre-wrap" %)**AT+APPKEY=xxxx**(% style="color:#000000; font-family:Arial,sans-serif; font-size:11pt; font-style:normal; font-variant-alternates:normal; font-variant-east-asian:normal; font-variant-ligatures:normal; font-variant-numeric:normal; font-variant-position:normal; font-weight:400; text-decoration:none; white-space:pre-wrap" %): Get or set the Application Key (AppKey)
2118 +
2119 +(% style="color:#000000; font-family:Arial,sans-serif; font-size:11pt; font-style:normal; font-variant-alternates:normal; font-variant-east-asian:normal; font-variant-ligatures:normal; font-variant-numeric:normal; font-variant-position:normal; font-weight:400; text-decoration:none; white-space:pre-wrap" %)**AT+NWKSKEY=xxxx**: Get or set the Network Session Key (NwkSKey)
2120 +
2121 +(% style="color:#000000; font-family:Arial,sans-serif; font-size:11pt; font-style:normal; font-variant-alternates:normal; font-variant-east-asian:normal; font-variant-ligatures:normal; font-variant-numeric:normal; font-variant-position:normal; font-weight:400; text-decoration:none; white-space:pre-wrap" %)**AT+APPSKEY=xxxx**: Get or set the Application Session Key (AppSKey)
2122 +
2123 +(% style="background-color:#dcdcdc" %)**ATZ**        (%%) : Reset MCU.
2140 2140  )))
2141 2141  
2142 2142  
2143 2143  (((
2144 -As shown in below:
2128 +(% style="color:#000000; font-family:Arial,sans-serif; font-size:11pt; font-style:normal; font-variant-alternates:normal; font-variant-east-asian:normal; font-variant-ligatures:normal; font-variant-numeric:normal; font-variant-position:normal; font-weight:400; text-decoration:none; white-space:pre-wrap" %)The following figure shows the screenshot of the command set above, issued using a serial tool:
2145 2145  )))
2146 2146  
2147 2147  [[image:1653360498588-932.png||height="485" width="726"]]
... ... @@ -2155,7 +2155,7 @@
2155 2155  == 6.5 Can I see the counting event in the serial output? ==
2156 2156  
2157 2157  (((
2158 -You can run the AT command AT+DEBUG to view the counting event in the serial output. If the firmware is too old and doesn’t support AT+DEBUG, update to the latest firmware first.
2142 +You can run the AT command **AT+DEBUG** to view the counting event in the serial output. If the firmware is too old and doesn’t support AT+DEBUG, update to the latest firmware first.
2159 2159  
2160 2160  
2161 2161  == 6.6 Can I use point-to-point communication with LT-22222-L? ==
... ... @@ -2173,6 +2173,7 @@
2173 2173  * In modes 2 to 5, the DO/RO status and pulse count are saved to flash memory.
2174 2174  * After a restart, the status before the power failure will be read from flash.
2175 2175  
2160 +
2176 2176  == 6.8 Can I setup LT-22222-L as a NC (Normally Closed) relay? ==
2177 2177  
2178 2178  The LT-22222-L's built-in relay is Normally Open (NO). You can use an external relay to achieve a Normally Closed (NC) configuration. The circuit diagram is shown below:
... ... @@ -2183,7 +2183,7 @@
2183 2183  
2184 2184  == 6.9 Can the LT-22222-L save the RO state? ==
2185 2185  
2186 -The firmware version must be at least 1.6.0.
2171 +To enable this feature, the firmware version must be 1.6.0 or higher.
2187 2187  
2188 2188  
2189 2189  == 6.10 Why does the LT-22222-L always report 15.585V when measuring the AVI? ==
... ... @@ -2229,7 +2229,7 @@
2229 2229  )))
2230 2230  
2231 2231  
2232 -== 7.4 Why can the LT-22222-L perform Uplink normally, but cannot receive Downlink? ==
2217 +== 7.4 Why can the LT-22222-L perform uplink normally, but cannot receive downlink? ==
2233 2233  
2234 2234  The FCD count of the gateway is inconsistent with the FCD count of the node, causing the downlink to remain in the queue.
2235 2235  Use this command to synchronize their counts: [[Resets the downlink packet count>>||anchor="H3.4.2.23Resetsthedownlinkpacketcount"]]
... ... @@ -2251,14 +2251,15 @@
2251 2251  * (% style="color:red" %)**IN865**(%%): LT with frequency bands IN865
2252 2252  * (% style="color:red" %)**CN779**(%%): LT with frequency bands CN779
2253 2253  
2254 -= 9. Packing information =
2255 2255  
2240 += 9. Package information =
2241 +
2256 2256  **Package includes**:
2257 2257  
2258 2258  * 1 x LT-22222-L I/O Controller
2259 2259  * 1 x LoRa antenna matched to the frequency of the LT-22222-L
2260 2260  * 1 x bracket for DIN rail mounting
2261 -* 1 x 3.5mm programming cable
2247 +* 1 x 3.5 mm programming cable
2262 2262  
2263 2263  **Dimension and weight**:
2264 2264  
... ... @@ -2267,6 +2267,7 @@
2267 2267  * Package Size / pcs : 14.5 x 8 x 5 cm
2268 2268  * Weight / pcs : 170 g
2269 2269  
2256 +
2270 2270  = 10. Support =
2271 2271  
2272 2272  * (((
lt-22222-l-abp.png
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