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1		-XWiki.Edwin
	1	+XWiki.Bei

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1070	1070	==== 2.6.7.2 Hardware Connection to SDI-12-LB/LS ====
1071	1071
	1072	+Note: When the bytes returned by the sensor are not fixed, the full byte interception can be used: AT+ALLDATAMOD=1 (The DATACUTx parameter needs to be cleared when using this directive, or it will not work.)
	1073	+
1072	1072	[[image:image-20240423145522-2.png||height="345" width="400"]]
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1381	1381	== 7.3 How to change the LoRa Frequency Bands/Region? ==
1382	1382
1383		-
1384	1384	You can follow the instructions for [[how to upgrade image>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]].
1385	1385	When downloading the images, choose the required image file for download. ​
1386	1386
1387	1387
	1389	+== 7.4 Why is the data uploaded to the LoRaWAN platform node empty and fProt~=0? ==
	1390	+
	1391	+This is due to The length of bytes sent by the node is limited by the lorawan protocol, and the fixed DR needs to be adjusted to improve this problem.
	1392	+
	1393	+Please refer to the following link for the number of bytes limited by different frequencies and different DRs in the lorawan protocol
	1394	+
	1395	+[[lora-alliance.org/wp-content/uploads/2021/05/RP002-1.0.3-FINAL-1.pdf>>url:https://lora-alliance.org/wp-content/uploads/2021/05/RP002-1.0.3-FINAL-1.pdf]]
	1396	+
	1397	+Example:
	1398	+
	1399	+[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/image-20240620145456-1.png?rev=1.1||alt="image-20240620145456-1.png"]]
	1400	+
	1401	+Please refer to the following command to fix DR
	1402	+
	1403	+AT+ADR=0
	1404	+
	1405	+AT+DR=3
	1406	+
	1407	+Downlink command:
	1408	+
	1409	+[[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20AT%20Commands%20and%20Downlink%20Command/#H7.4DataRate>>url:http://wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20AT%20Commands%20and%20Downlink%20Command/#H7.4DataRate]]
	1410	+
	1411	+(% class="wikigeneratedid" %)
	1412	+= =
	1413	+
1388	1388	= 8. ​Order Info =
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1390	1390