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92	92	* Automatic RF Sense and CAD with ultra-fast AFC.
93	93	* Packet engine up to 256 bytes with CRC
94	94
95		-
96		-
97	97	== 1.3 Features ==
98	98
99	99	* LoRaWAN Class A & Class C protocol (default Class C)
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105	105	* Support Modbus protocol
106	106	* Support Interrupt uplink (Since hardware version v1.2)
107	107
108		-
109		-
110	110	== 1.4 Applications ==
111	111
112	112	* Smart Buildings & Home Automation
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116	116	* Smart Cities
117	117	* Smart Factory
118	118
119		-
120		-
121	121	== 1.5 Firmware Change log ==
122	122
123	123	[[RS485-LN Image files – Download link and Change log>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/]]
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316	316	)))
317	317
318	318
319		-
320	320	=== 3.3.2 Configure sensors ===
321	321
322	322	(((
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328	328	(% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
329	329	|=(% style="width: 110px;" %)**AT Commands**|=(% style="width: 190px;" %)**Description**|=(% style="width: 190px;" %)**Example**
330	330	|AT+CFGDEV|(% style="width:110px" %)(((
331		-(((
332	332	This command is used to configure the RS485/TTL devices; they won’t be used during sampling.
333		-)))
334	334
335		-(((
336	336	AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,
337		-)))
338	338
339		-(((
340	340	mm: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
341		-)))
342	342	)))|(% style="width:190px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
343	343
344	344
345		-
346	346	=== 3.3.3 Configure read commands for each sampling ===
347	347
348	348	(((
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1207	1207	|(% style="width:50px" %)**PRO**|(% style="width:350px" %)Use for upload image, see [[How to Update Image>>||anchor="H6.1Howtoupgradetheimage3F"]]
1208	1208
1209	1209
1210		-
1211	1211	== 3.8 LEDs ==
1212	1212
1213	1213
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1216	1216	|**PWR**|Always on if there is power
1217	1217	|**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.
1218	1218
	1204	+
1219	1219	= 4. Case Study =
1220	1220
1221	1221	User can check this URL for some case studies: [[APP RS485 COMMUNICATE WITH SENSORS>>doc:Main.Application Note \: Communicate with Different Sensors ----- RS485-LN RS485-BL.WebHome]]
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1267	1267	)))
1268	1268
1269	1269
1270		-(((
1271	1271	If device already joined network:
1272		-)))
1273	1273
1274	1274	(% class="box infomessage" %)
1275	1275	(((
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1308	1308
1309	1309	(% style="color:red" %)**Note:**
1310	1310
1311		-(((
1312	1312	(% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server.
1313	1313	2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
1314	1314	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?dir=LoRa_Gateway/&file=LoRaWAN%201.0.3%20Regional%20Parameters.xlsx]] to see what DR means.
1315	1315	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
1316		-)))
1317	1317
1318	1318	[[image:1654162478620-421.png]]
1319	1319
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1342	1342
1343	1343	[[image:1654162535040-878.png]]
1344	1344
1345		-(((
1346	1346	**Step1:** Download [[flash loader>>url:https://www.st.com/content/st_com/en/products/development-tools/software-development-tools/stm32-software-development-tools/stm32-programmers/flasher-stm32.html]].
1347		-)))
1348	1348
1349		-(((
1350	1350	**Step2**: Download the [[LT Image files>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]].
1351		-)))
1352	1352
1353		-(((
1354	1354	**Step3: **Open flashloader; choose the correct COM port to update.
1355		-)))
1356	1356
1357	1357	(((
1358	1358	(((
1359		-(((
1360	1360	(% style="color:blue" %) Hold down the PRO button and then momentarily press the RST reset button and the SYS led will change from OFF to ON, While SYS LED is RED ON, it means the RS485-LN is ready to be program.
1361	1361	)))
1362	1362	)))
1363		-)))
1364	1364
1365	1365
1366	1366	[[image:image-20220602175818-12.png]]