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34	34	== 1.1 What is RS485-LN RS485 to LoRaWAN Converter ==
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41	41	The Dragino RS485-LN is a (% style="color:blue" %)**RS485 to LoRaWAN Converter**(%%). It converts the RS485 signal into LoRaWAN wireless signal which simplify the IoT installation and reduce the installation/maintaining cost.
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47	47	RS485-LN allows user to (% style="color:blue" %)**monitor / control RS485 devices**(%%) and reach extremely long ranges. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption. It targets professional wireless sensor network applications such as irrigation systems, smart metering, smart cities, smartphone detection, building automation, and so on.
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53	53	(% style="color:blue" %)**For data uplink**(%%), RS485-LN sends user-defined commands to RS485 devices and gets the return from the RS485 devices. RS485-LN will process these returns according to user-define rules to get the final payload and upload to LoRaWAN server.
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59	59	(% style="color:blue" %)**For data downlink**(%%), RS485-LN runs in LoRaWAN Class C. When there downlink commands from LoRaWAN server, RS485-LN will forward the commands from LoRaWAN server to RS485 devices.
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63	63	(% style="color:blue" %)**Demo Dashboard for RS485-LN**(%%) connect to two energy meters: [[https:~~/~~/app.datacake.de/dashboard/d/58844a26-378d-4c5a-aaf5-b5b5b153447a>>url:https://app.datacake.de/dashboard/d/58844a26-378d-4c5a-aaf5-b5b5b153447a]]
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70	70	(% aria-label="1653267211009-519.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1653267211009-519.png||data-widget="image" height="419" width="724"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
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309	309	To use RS485-LN to read data from RS485 sensors, connect the RS485-LN A/B traces to the sensors. And user need to make sure RS485-LN use the match UART setting to access the sensors. The related commands for UART settings are:
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312		-(% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
	300	+(% border="1" cellspacing="5" style="background-color:#ffffcc; color:green; width:510px" %)
313	313	|=(% style="width: 110px;" %)(((
314	314	**AT Commands**
315		-)))|=(% style="width: 190px;" %)(((
	303	+)))|=(% style="width: 210px;" %)(((
316	316	**Description**
317	317	)))|=(% style="width: 190px;" %)(((
318	318	**Example**
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380	380	)))
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383		-(% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
384		-|=(% style="width: 110px;" %)**AT Commands**|=(% style="width: 190px;" %)**Description**|=(% style="width: 190px;" %)**Example**
	371	+(% border="1" cellspacing="5" style="background-color:#ffffcc; color:green; width:510px" %)
	372	+|=(% style="width: 110px;" %)**AT Commands**|=(% style="width: 210px;" %)**Description**|=(% style="width: 190px;" %)**Example**
385	385	|AT+CFGDEV|(% style="width:110px" %)(((
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387	387	This command is used to configure the RS485/TTL devices; they won’t be used during sampling.
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431	431	(% border="1" style="background-color:#4bacc6; color:white; width:499px" %)
432	432	|(% style="width:496px" %)(((
433		-(% style="color:#037691" %)**AT+COMMANDx=xx xx xx xx xx xx xx xx xx xx xx xx,m**
	421	+**AT+COMMANDx=xx xx xx xx xx xx xx xx xx xx xx xx,m**
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435	435	**xx xx xx xx xx xx xx xx xx xx xx xx: The RS485 command to be sent**
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516	516	Final Payload is (% style="color:#4f81bd" %)**PAYVER + PAYLOAD COUNT + PAYLOAD# + DATA**
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519		-1. PAYVER: Defined by AT+PAYVER
520		-1. PAYLOAD COUNT: Total how many uplinks of this sampling.
521		-1. PAYLOAD#: Number of this uplink. (from 0,1,2,3…,to PAYLOAD COUNT)
522		-1. DATA: Valid value: max 8 bytes for each uplink so each uplink <= 11 bytes. For the last uplink, DATA will might less than 8 bytes
	507	+~1. PAYVER: Defined by AT+PAYVER
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	509	+2. PAYLOAD COUNT: Total how many uplinks of this sampling.
	510	+
	511	+3. PAYLOAD#: Number of this uplink. (from 0,1,2,3…,to PAYLOAD COUNT)
	512	+
	513	+4. DATA: Valid value: max 8 bytes for each uplink so each uplink <= 11 bytes. For the last uplink, DATA will might less than 8 bytes
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524	524	(% aria-label="image-20220602155039-4.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602155039-4.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
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586	586	== 3.4 Uplink Payload ==
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589		-(% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:520px" %)
590		-|(% style="width:90px" %)(((
	581	+(% border="1" cellspacing="5" style="background-color:#ffffcc; color:green; width:500px" %)
	582	+|=(% scope="row" style="width: 60px;" %)(((
591	591	Size(bytes)
592		-)))|(% style="width:114px" %)1|(% style="width:353px" %)(((
	584	+)))|(% style="width:80px" %)1|(% style="width:360px" %)(((
593	593	Length depends on the return from the commands
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595		-|(% style="width:90px" %)(((
	587	+|=(% style="width: 90px;" %)(((
596	596	Value
597	597	)))|(% style="width:114px" %)(((
598	598	PAYLOAD_VER
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1204	1204	)))
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1207	1207	==== (% style="color:blue" %)**Configure Databit (Since Version 1.4.0)**(%%) ====
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1210	1210	(% style="color:#037691" %)** AT Command:**
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1213		-**~ AT+DATABIT=7  **~/~/ Set the data bits to 7
	1207	+**~ AT+DATABIT=7    **~/~/ Set the data bits to 7
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1215		-**~ AT+DATABIT=8  **~/~/ Set the data bits to 8
	1209	+**~ AT+DATABIT=8    **~/~/ Set the data bits to 8
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1218	1218	(% style="color:#037691" %)**Downlink Payload:**
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1471	1471	(% border="1.5" cellspacing="4" style="background-color:#ffffcc; width:430px" %)
1472		-|=(% style="width: 50px;" %)**Button**|=(% style="width: 361px;" %)**Feature**
	1466	+|=(% style="width: 50px;" %)**Button**|=(% style="width: 380px;" %)**Feature**
1473	1473	|(% style="width:50px" %)**ACT**|(% style="width:361px" %)If RS485 joined in network, press this button for more than 1 second, RS485 will upload a packet, and the SYS LED will give a (% style="color:blue" %)**Blue blink**
1474	1474	|(% style="width:50px" %)**RST**|(% style="width:361px" %)Reboot RS485
1475	1475	|(% style="width:50px" %)**PRO**|(% style="width:361px" %)Use for upload image, see [[How to Update Image>>||anchor="H6.1Howtoupgradetheimage3F"]]