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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
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1205	1205	|(% style="width:50px" %)**RST**|(% style="width:350px" %)Reboot RS485
1206	1206	|(% style="width:50px" %)**PRO**|(% style="width:350px" %)Use for upload image, see [[How to Update Image>>||anchor="H6.1Howtoupgradetheimage3F"]]
1207	1207
	1195	+
1208	1208	== 3.8 LEDs ==
1209	1209
1210	1210
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1213	1213	|**PWR**|Always on if there is power
1214	1214	|**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.
1215	1215
	1204	+
1216	1216	= 4. Case Study =
1217	1217
1218	1218	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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1264	1264	)))
1265	1265
1266	1266
1267		-(((
1268	1268	If device already joined network:
1269		-)))
1270	1270
1271	1271	(% class="box infomessage" %)
1272	1272	(((
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1305	1305
1306	1306	(% style="color:red" %)**Note:**
1307	1307
1308		-(((
1309	1309	(% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server.
1310	1310	2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
1311	1311	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.
1312	1312	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
1313		-)))
1314	1314
1315	1315	[[image:1654162478620-421.png]]
1316	1316
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1339	1339
1340	1340	[[image:1654162535040-878.png]]
1341	1341
1342		-(((
1343	1343	**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]].
1344		-)))
1345	1345
1346		-(((
1347	1347	**Step2**: Download the [[LT Image files>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]].
1348		-)))
1349	1349
1350		-(((
1351	1351	**Step3: **Open flashloader; choose the correct COM port to update.
1352		-)))
1353	1353
1354	1354	(((
1355	1355	(((
1356		-(((
1357	1357	(% 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.
1358	1358	)))
1359	1359	)))
1360		-)))
1361	1361
1362	1362
1363	1363	[[image:image-20220602175818-12.png]]