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284		-==== 3.3.2.1 Configure UART settings for RS485 communication ====
	284	+==== 3.3.2.1 Configure UART settings for RS485 or TTL communication ====
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287		-To use RS485-LN to read data from RS485 sensors, connect the RS485-LN A/B traces to the sensors. The related commands for UART settings are:
	287	+RS485-LN can connect to either RS485 sensors or TTL sensor. User need to specify what type of sensor need to connect.
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289		-(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
290		-|=(% style="width: 126px; background-color:#4F81BD;color:white" %)(((
	289	+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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	291	+(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:510px" %)
	292	+|=(% style="width: 126px; background-color:#D9E2F3;color:#0070C0" %)(((
291	291	**AT Commands**
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	294	+)))|=(% style="width: 187px; background-color:#D9E2F3;color:#0070C0" %)(((
293	293	**Description**
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	296	+)))|=(% style="width: 197px;background-color:#D9E2F3;color:#0070C0" %)(((
295	295	**Example**
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354	354	Some sensors might need to configure before normal operation. User can configure such sensor via PC and RS485 adapter or through RS485-LN AT Commands (% style="color:#4f81bd" %)**AT+CFGDEV**(%%). Each (% style="color:#4f81bd" %)**AT+CFGDEV **(%%)equals to send a RS485 command to sensors. This command will only run when user input it and won't run during each sampling.
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357		-(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
358		-|=(% style="width: 122px; background-color:#4F81BD;color:white" %)**AT Commands**|=(% style="width: 198px; background-color:#4F81BD;color:white" %)**Description**|=(% style="width: 190px;background-color:#4F81BD;color:white" %)**Example**
	359	+(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:510px" %)
	360	+|=(% style="width: 122px; background-color:#D9E2F3;color:#0070C0" %)**AT Commands**|=(% style="width: 198px; background-color:#D9E2F3;color:#0070C0" %)**Description**|=(% style="width: 190px;background-color:#D9E2F3;color:#0070C0" %)**Example**
359	359	|(% style="width:122px" %)AT+CFGDEV|(% style="width:196px" %)(((
360	360	(((
361	361	This command is used to configure the RS485/TTL devices; they won’t be used during sampling.
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1386	1386	To enable the listening mode, use can run the command (% style="color:#4472c4" %)** AT+RXMODE**.
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1390		-|=(% style="width: 156px; background-color:#4F81BD;color:white" %)(((
	1391	+(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:510px" %)
	1392	+|=(% style="width: 156px; background-color:#D9E2F3;color:#0070C0" %)(((
1391	1391	**Command example**
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	1394	+)))|=(% style="width: 355px; background-color:#D9E2F3;color:#0070C0" %)(((
1393	1393	**Function**
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1470	1470	(% border="1.5" cellspacing="4" style="background-color:#f2f2f2; width:430px" %)
1471		-|=(% style="width: 50px;background-color:#4F81BD;color:white" %)**Button**|=(% style="width: 380px;background-color:#4F81BD;color:white" %)**Feature**
	1473	+|=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)**Button**|=(% style="width: 380px;background-color:#D9E2F3;color:#0070C0" %)**Feature**
1472	1472	|(% 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**
1473	1473	|(% style="width:50px" %)RST|(% style="width:361px" %)Reboot RS485
1474	1474	|(% style="width:50px" %)PRO|(% style="width:361px" %)Use for upload image, see [[How to Update Image>>||anchor="H6.1Howtoupgradetheimage3F"]]
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1479	1479	(% border="1.5" cellspacing="4" style="background-color:#f2f2f2; width:430px" %)
1480		-|=(% style="width: 50px;background-color:#4F81BD;color:white" %)**LEDs**|=(% style="width: 380px;background-color:#4F81BD;color:white" %)**Feature**
	1482	+|=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)**LEDs**|=(% style="width: 380px;background-color:#D9E2F3;color:#0070C0" %)**Feature**
1481	1481	|PWR|Always on if there is power
1482	1482	|SYS|After device is powered on, the SYS will (% style="color:green" %)**fast blink in GREEN**(%%) for 5 times, means RS485-LN start to join LoRaWAN network. If join success, SYS will be (% style="color:green" %)**on GREEN for 5 seconds** (%%)**. **SYS will (% style="color:green" %)**blink Blue**(%%) on every upload and (% style="color:green" %)**blink Green**(%%) once receive a downlink message.
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