Last modified by Saxer Lin on 2025/04/15 17:24
<
From version < 191.1 >
edited by Dilisi S
on 2024/11/14 03:08
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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Content
... ... @@ -111,7 +111,6 @@
111 111  * Smart cities
112 112  * Smart factory
113 113  
114 -
115 115  = 2. Assembling the device =
116 116  
117 117  == 2.1 Connecting the antenna ==
... ... @@ -1795,7 +1795,7 @@
1795 1795  )))
1796 1796  
1797 1797  (((
1798 -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.
1799 1799  
1800 1800  * AT+<CMD>? : Help on <CMD>
1801 1801  * AT+<CMD> : Run <CMD>
... ... @@ -1854,28 +1854,28 @@
1854 1854  
1855 1855  
1856 1856  (((
1857 -(% 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:**
1858 1858  )))
1859 1859  )))
1860 1860  
1861 1861  (((
1862 -(% style="background-color:#dcdcdc" %)##**123456 ~/~/enable AT commands access**##
1861 +(% style="background-color:#dcdcdc" %)##**123456 ~/~/Enter the password to enable AT commands access**##
1863 1863  )))
1864 1864  
1865 1865  (((
1866 -(% 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**##
1867 1867  )))
1868 1868  
1869 1869  (((
1870 -(% style="background-color:#dcdcdc" %)##**123456 ~/~/enable AT commands access**##
1869 +(% style="background-color:#dcdcdc" %)##**123456 ~/~/Enter the password to enable AT commands access**##
1871 1871  )))
1872 1872  
1873 1873  (((
1874 -(% style="background-color:#dcdcdc" %)##**AT+NJM=0 ~/~/set to ABP mode**##
1873 +(% style="background-color:#dcdcdc" %)##**AT+NJM=0 ~/~/Set to ABP mode**##
1875 1875  )))
1876 1876  
1877 1877  (((
1878 -(% style="background-color:#dcdcdc" %)##**ATZ ~/~/reset MCU**##
1877 +(% style="background-color:#dcdcdc" %)##**ATZ ~/~/Reset MCU**##
1879 1879  )))
1880 1880  
1881 1881  
... ... @@ -1898,20 +1898,20 @@
1898 1898  
1899 1899  
1900 1900  (((
1901 -(% style="background-color:#dcdcdc" %)**123456**(%%)  ~/~/ Enter Password to have AT access.
1900 +(% style="background-color:#dcdcdc" %)**123456**(%%)  ~/~/ Enter password to enable AT commands access
1902 1902  )))
1903 1903  )))
1904 1904  
1905 1905  (((
1906 -(% 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
1907 1907  )))
1908 1908  
1909 1909  (((
1910 -(% style="background-color:#dcdcdc" %)** 123456**(%%)  ~/~/ Enter Password to have AT access.
1909 +(% style="background-color:#dcdcdc" %)** 123456**(%%)  ~/~/ Enter password to enable AT commands access
1911 1911  )))
1912 1912  
1913 1913  (((
1914 -(% 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
1915 1915  )))
1916 1916  
1917 1917  (((
... ... @@ -1931,19 +1931,19 @@
1931 1931  )))
1932 1932  
1933 1933  (((
1934 -(% 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
1935 1935  )))
1936 1936  
1937 1937  (((
1938 -(% 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)
1939 1939  )))
1940 1940  
1941 1941  (((
1942 -(% 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.
1943 1943  )))
1944 1944  
1945 1945  (((
1946 -(% 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.
1947 1947  )))
1948 1948  
1949 1949  (((
... ... @@ -1957,14 +1957,14 @@
1957 1957  )))
1958 1958  
1959 1959  (((
1960 -**~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.**
1961 1961  
1962 -**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.**
1963 1963  
1964 -**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?
1965 1965  dir=LoRa_Gateway/&file=LoRaWAN%201.0.3%20Regional%20Parameters.xlsx]] to see what DR means.**
1966 1966  
1967 -**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.**
1968 1968  )))
1969 1969  
1970 1970  (((
... ... @@ -1998,10 +1998,8 @@
1998 1998  
1999 1999  == 6.1 How to update the firmware? ==
2000 2000  
2001 -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:
2002 2002  
2003 -Updating your LT-22222-L with the latest firmware version helps to:
2004 -
2005 2005  * Support new features
2006 2006  * Fix bugs
2007 2007  * Change LoRaWAN frequency bands
... ... @@ -2019,8 +2019,8 @@
2019 2019  
2020 2020  Below is the hardware setup for uploading a firmware image to the LT-22222-L:
2021 2021  
2019 +[[image:usb-ttl-programming.png]]
2022 2022  
2023 -[[image:1653359603330-121.png]]
2024 2024  
2025 2025  
2026 2026  Start the STM32 Flash Loader and choose the correct COM port to update.
... ... @@ -2044,7 +2044,7 @@
2044 2044  [[image:image-20220524104033-15.png]]
2045 2045  
2046 2046  
2047 -(% 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:
2048 2048  
2049 2049  [[image:1653360054704-518.png||height="186" width="745"]]
2050 2050  
... ... @@ -2062,18 +2062,18 @@
2062 2062  (((
2063 2063  
2064 2064  
2065 -== 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? ==
2066 2066  )))
2067 2067  
2068 2068  (((
2069 2069  (((
2070 -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.
2071 2071  )))
2072 2072  )))
2073 2073  
2074 2074  (((
2075 2075  (((
2076 -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.
2077 2077  
2078 2078  
2079 2079  )))
... ... @@ -2080,52 +2080,55 @@
2080 2080  )))
2081 2081  
2082 2082  (((
2083 -(% 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).
2084 2084  
2085 -
2082 +[[image:lt-22222-l-abp.png||height="686" width="1000"]]
2086 2086  )))
2087 2087  
2088 2088  (((
2089 -[[image:1653360231087-571.png||height="401" width="727"]]
2090 -
2091 2091  
2092 2092  )))
2093 2093  
2094 -(((
2095 -(% 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.**
2096 -)))
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}}
2097 2097  
2098 2098  
2099 -
2100 2100  (((
2101 -(% 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:
2102 2102  
2103 2103  
2104 2104  )))
2105 2105  
2106 2106  (((
2107 -(% style="background-color:#dcdcdc" %)**123456** (%%) :  Enter Password to have AT access.
2101 +(% style="background-color:#dcdcdc" %)**123456** (%%) : Enter the password to enable AT access.
2108 2108  
2109 -(% 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.
2110 2110  
2111 -(% style="background-color:#dcdcdc" %)**AT+NJM=0** (%%) :  Set to ABP mode
2105 +(% style="background-color:#dcdcdc" %)**AT+NJM=0** (%%) : Set to ABP mode.
2112 2112  
2113 -(% 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).
2114 2114  
2115 -(% 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).
2116 2116  
2117 -(% 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.
2118 2118  
2119 -(% 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.
2120 2120  
2121 -(% 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)
2122 2122  
2123 -(% 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.
2124 2124  )))
2125 2125  
2126 2126  
2127 2127  (((
2128 -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:
2129 2129  )))
2130 2130  
2131 2131  [[image:1653360498588-932.png||height="485" width="726"]]
... ... @@ -2139,7 +2139,7 @@
2139 2139  == 6.5 Can I see the counting event in the serial output? ==
2140 2140  
2141 2141  (((
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.
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.
2143 2143  
2144 2144  
2145 2145  == 6.6 Can I use point-to-point communication with LT-22222-L? ==
... ... @@ -2157,6 +2157,7 @@
2157 2157  * In modes 2 to 5, the DO/RO status and pulse count are saved to flash memory.
2158 2158  * After a restart, the status before the power failure will be read from flash.
2159 2159  
2160 +
2160 2160  == 6.8 Can I setup LT-22222-L as a NC (Normally Closed) relay? ==
2161 2161  
2162 2162  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:
... ... @@ -2167,7 +2167,7 @@
2167 2167  
2168 2168  == 6.9 Can the LT-22222-L save the RO state? ==
2169 2169  
2170 -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.
2171 2171  
2172 2172  
2173 2173  == 6.10 Why does the LT-22222-L always report 15.585V when measuring the AVI? ==
... ... @@ -2213,7 +2213,7 @@
2213 2213  )))
2214 2214  
2215 2215  
2216 -== 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? ==
2217 2217  
2218 2218  The FCD count of the gateway is inconsistent with the FCD count of the node, causing the downlink to remain in the queue.
2219 2219  Use this command to synchronize their counts: [[Resets the downlink packet count>>||anchor="H3.4.2.23Resetsthedownlinkpacketcount"]]
... ... @@ -2235,14 +2235,15 @@
2235 2235  * (% style="color:red" %)**IN865**(%%): LT with frequency bands IN865
2236 2236  * (% style="color:red" %)**CN779**(%%): LT with frequency bands CN779
2237 2237  
2238 -= 9. Packing information =
2239 2239  
2240 += 9. Package information =
2241 +
2240 2240  **Package includes**:
2241 2241  
2242 2242  * 1 x LT-22222-L I/O Controller
2243 2243  * 1 x LoRa antenna matched to the frequency of the LT-22222-L
2244 2244  * 1 x bracket for DIN rail mounting
2245 -* 1 x 3.5mm programming cable
2247 +* 1 x 3.5 mm programming cable
2246 2246  
2247 2247  **Dimension and weight**:
2248 2248  
... ... @@ -2251,6 +2251,7 @@
2251 2251  * Package Size / pcs : 14.5 x 8 x 5 cm
2252 2252  * Weight / pcs : 170 g
2253 2253  
2256 +
2254 2254  = 10. Support =
2255 2255  
2256 2256  * (((

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