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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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311	311	)))
312	312	)))
313	313
	312	+
314	314	=== 3.3.2 Configure sensors ===
315	315
316	316	(((
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322	322	(% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
323	323	|=(% style="width: 110px;" %)**AT Commands**|=(% style="width: 190px;" %)**Description**|=(% style="width: 190px;" %)**Example**
324	324	|AT+CFGDEV|(% style="width:110px" %)(((
325		-(((
326	326	This command is used to configure the RS485/TTL devices; they won’t be used during sampling.
327		-)))
328	328
329		-(((
330	330	AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,
331		-)))
332	332
333		-(((
334	334	mm: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
335		-)))
336	336	)))|(% style="width:190px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
337	337
	331	+
338	338	=== 3.3.3 Configure read commands for each sampling ===
339	339
340	340	(((
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1183	1183	)))
1184	1184
1185	1185	(((
1186		-(((
1187	1187	(% style="color:red" %)Notice: Listening mode can work with the default polling mode of RS485-LN. When RS485-LN is in to send the RS485 commands (from AT+COMMANDx), the listening mode will be interrupt for a while.
1188	1188	)))
1189		-)))
1190	1190
1191	1191
1192	1192	== 3.7 Buttons ==
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1198	1198	|(% style="width:50px" %)**RST**|(% style="width:350px" %)Reboot RS485
1199	1199	|(% style="width:50px" %)**PRO**|(% style="width:350px" %)Use for upload image, see [[How to Update Image>>||anchor="H6.1Howtoupgradetheimage3F"]]
1200	1200
	1193	+
1201	1201	== 3.8 LEDs ==
1202	1202
1203	1203
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1206	1206	|**PWR**|Always on if there is power
1207	1207	|**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.
1208	1208
	1202	+
1209	1209	= 4. Case Study =
1210	1210
1211	1211	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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1257	1257	)))
1258	1258
1259	1259
1260		-(((
1261	1261	If device already joined network:
1262		-)))
1263	1263
1264	1264	(% class="box infomessage" %)
1265	1265	(((
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1298	1298
1299	1299	(% style="color:red" %)**Note:**
1300	1300
1301		-(((
1302	1302	(% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server.
1303	1303	2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
1304	1304	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.
1305	1305	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
1306		-)))
1307	1307
1308	1308	[[image:1654162478620-421.png]]
1309	1309
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1332	1332
1333	1333	[[image:1654162535040-878.png]]
1334	1334
1335		-(((
1336	1336	**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]].
1337		-)))
1338	1338
1339		-(((
1340	1340	**Step2**: Download the [[LT Image files>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]].
1341		-)))
1342	1342
1343		-(((
1344	1344	**Step3: **Open flashloader; choose the correct COM port to update.
1345		-)))
1346	1346
1347	1347	(((
1348	1348	(((
1349		-(((
1350	1350	(% 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.
1351	1351	)))
1352	1352	)))
1353		-)))
1354	1354
1355	1355
1356	1356	[[image:image-20220602175818-12.png]]