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Last modified by Mengting Qiu on 2025/06/04 18:42
From version 102.4
edited by Xiaoling
on 2022/10/29 10:05
Change comment: There is no comment for this version
To version 109.1
edited by Edwin Chen
on 2022/11/19 11:32
Change comment: There is no comment for this version

Summary

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Author
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1 -XWiki.Xiaoling
1 +XWiki.Edwin
Content
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64 64  )))
65 65  
66 66  * (((
67 -STM32L072CZT6 MCU
67 +STM32L072xxxx MCU
68 68  )))
69 69  * (((
70 70  SX1276/78 Wireless Chip 
... ... @@ -186,9 +186,6 @@
186 186  * Firmware upgradable via program port
187 187  * Counting
188 188  
189 -
190 -
191 -
192 192  == 1.4  Applications ==
193 193  
194 194  
... ... @@ -199,9 +199,6 @@
199 199  * Smart Cities
200 200  * Smart Factory
201 201  
202 -
203 -
204 -
205 205  == 1.5 Hardware Variants ==
206 206  
207 207  
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216 216  * 1 x Counting Port
217 217  )))
218 218  
219 -
220 -
221 221  = 2. Power ON Device =
222 222  
223 223  
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776 776  
777 777  * (% style="color:blue" %)**Sensor Related Commands**(%%): These commands are special designed for LT-22222-L.  User can see these commands below:
778 778  
779 -
780 -
781 -
782 782  === 3.4.1 Common Commands ===
783 783  
784 784  
... ... @@ -1081,6 +1081,13 @@
1081 1081  
1082 1082   Latching time. Unit: ms
1083 1083  
1073 +Note:
1074 +
1075 + Since Firmware v1.6.0, the latch time support 4 bytes and 2 bytes
1076 +
1077 + Before Firmwre v1.6.0 the latch time only suport 2 bytes.
1078 +
1079 +
1084 1084  (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1085 1085  
1086 1086  
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1165 1165  
1166 1166  (% style="color:#4f81bd" %)**Fourth/Fifth/Sixth/Seventh Bytes(cc)**(%%): Latching time. Unit: ms
1167 1167  
1164 +Note:
1165 +
1166 + Since Firmware v1.6.0, the latch time support 4 bytes and 2 bytes
1167 +
1168 + Before Firmwre v1.6.0 the latch time only suport 2 bytes.
1169 +
1170 +
1168 1168  (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1169 1169  
1170 1170  
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1256 1256  
1257 1257  
1258 1258  
1259 -==== 3.4.2.20 Reset save DR DO state ====
1262 +==== 3.4.2.20 Reset save RO DO state ====
1260 1260  
1261 1261  
1262 1262  * (% style="color:#037691" %)**AT Command:**
1263 1263  
1264 -(% style="color:blue" %)**AT+RODORET=1    **(%%)~/~/ RODO will close when the device joining the network. (default)
1267 +(% style="color:blue" %)**AT+RODORESET=1    **(%%)~/~/ RODO will close when the device joining the network. (default)
1265 1265  
1266 -(% style="color:blue" %)**AT+RODORET=0    **(%%)~/~/ After the device is reset, the previously saved RODO state (only MOD2 to MOD5) is read, and its state is not changed when it is reconnected to the network.
1269 +(% style="color:blue" %)**AT+RODORESET=0    **(%%)~/~/ After the device is reset, the previously saved RODO state (only MOD2 to MOD5) is read, and its state is not changed when it is reconnected to the network.
1267 1267  
1268 1268  
1269 1269  * (% style="color:#037691" %)**Downlink Payload (prefix 0xAD):**
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1549 1549  === 3.6.3 Digital Output Port: DO1/DO2 /DO3 ===
1550 1550  
1551 1551  
1552 -NPN output: GND or Float. Max voltage can apply to output pin is 36v.
1555 +**NPN output**: GND or Float. Max voltage can apply to output pin is 36v.
1553 1553  
1557 +Note: DO pins go to float when device is power off.
1558 +
1554 1554  [[image:1653357531600-905.png]]
1555 1555  
1556 1556  
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1591 1591  
1592 1592  
1593 1593  (((
1594 -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:
1599 +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:
1600 +
1601 +**Note**: RO pins go to Open(NO) when device is power off.
1595 1595  )))
1596 1596  
1597 1597  [[image:image-20220524100215-9.png]]
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2105 2105  == 5.5 Can i use point to point communication for LT-22222-L? ==
2106 2106  
2107 2107  
2108 -Yes, please refer [[Point to Point Communication>>doc:Main. Point to Point Communication of LT-22222-L.WebHome]]  ，this is [[firmware>>https://www.dropbox.com/sh/g99v0fxcltn9r1y/AADKXQ2v5ZT-S3sxdmbvE7UAa/LT-22222-L/image?dl=0&subfolder_nav_tracking=1]].
2115 +Yes, please refer [[Point to Point Communication>>doc:Main. Point to Point Communication of LT-22222-L.WebHome]]  ，this is [[firmware>>https://github.com/dragino/LT-22222-L/releases]].
2109 2109  
2110 2110  
2111 2111  
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2134 2134  [[image:image-20221006170630-1.png||height="610" width="945"]]
2135 2135  
2136 2136  
2144 +== 5.8 Can LT22222-L save RO state? ==
2137 2137  
2146 +
2147 +Firmware version needs to be no less than 1.6.0.
2148 +
2149 +
2150 +
2138 2138  = 6. Trouble Shooting =
2139 2139  
2140 2140  
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2197 2197  * (% style="color:red" %)**IN865**(%%):  LT with frequency bands IN865
2198 2198  * (% style="color:red" %)**CN779**(%%):  LT with frequency bands CN779
2199 2199  
2200 -
2201 -
2202 -
2203 2203  = 8. Packing Info =
2204 2204  
2205 2205  
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2217 2217  * Package Size / pcs : 14.5 x 8 x 5 cm
2218 2218  * Weight / pcs : 170g
2219 2219  
2220 -
2221 -
2222 -
2223 2223  = 9. Support =
2224 2224  
2225 2225  
... ... @@ -2230,7 +2230,6 @@
2230 2230  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 [[support@dragino.com>>url:file:///D:/市场资料/说明书/LoRa/LT系列/support@dragino.com]]
2231 2231  
2232 2232  
2233 -
2234 2234  
2235 2235  )))
2236 2236  
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