Summary

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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	+
95	95	== 1.3 Features ==
96	96
97	97	* LoRaWAN Class A & Class C protocol (default Class C)
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103	103	* Support Modbus protocol
104	104	* Support Interrupt uplink (Since hardware version v1.2)
105	105
	108	+
	109	+
106	106	== 1.4 Applications ==
107	107
108	108	* Smart Buildings & Home Automation
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112	112	* Smart Cities
113	113	* Smart Factory
114	114
	119	+
	120	+
115	115	== 1.5 Firmware Change log ==
116	116
117	117	[[RS485-LN Image files – Download link and Change log>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/]]
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309	309	)))
310	310	)))
311	311
	318	+
	319	+
312	312	=== 3.3.2 Configure sensors ===
313	313
314	314	(((
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320	320	(% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
321	321	|=(% style="width: 110px;" %)**AT Commands**|=(% style="width: 190px;" %)**Description**|=(% style="width: 190px;" %)**Example**
322	322	|AT+CFGDEV|(% style="width:110px" %)(((
	331	+(((
323	323	This command is used to configure the RS485/TTL devices; they won’t be used during sampling.
	333	+)))
324	324
	335	+(((
325	325	AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,
	337	+)))
326	326
	339	+(((
327	327	mm: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
	341	+)))
328	328	)))|(% style="width:190px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
329	329
	344	+
	345	+
330	330	=== 3.3.3 Configure read commands for each sampling ===
331	331
332	332	(((
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1104	1104	)))
1105	1105
1106	1106	(% border="1" cellspacing="10" style="background-color:#ffffcc; width:500px" %)
1107		-|=(% style="width: 161px;" %)(((
1108		-**Command example:**
1109		-)))|=(% style="width: 337px;" %)(((
	1123	+|=(% style="width: 100px;" %)(((
	1124	+**Command example**
	1125	+)))|=(% style="width: 400px;" %)(((
1110	1110	**Function**
1111	1111	)))
1112		-|(% style="width:161px" %)(((
	1128	+|(% style="width:100px" %)(((
1113	1113	AT+RXMODE=1,10
1114		-)))|(% style="width:337px" %)(((
	1130	+)))|(% style="width:400px" %)(((
1115	1115	Enable listening mode 1, if RS485-LN has received more than 10 RS485 commands from the network. RS485-LN will send these commands via LoRaWAN uplinks.
1116	1116	)))
1117		-|(% style="width:161px" %)(((
	1133	+|(% style="width:100px" %)(((
1118	1118	AT+RXMODE=2,500
1119		-)))|(% style="width:337px" %)(((
	1135	+)))|(% style="width:400px" %)(((
1120	1120	Enable listening mode 2, RS485-LN will capture and send a 500ms content once from the first detect of character. Max value is 65535 ms
1121	1121	)))
1122		-|(% style="width:161px" %)(((
	1138	+|(% style="width:100px" %)(((
1123	1123	AT+RXMODE=0,0
1124		-)))|(% style="width:337px" %)(((
	1140	+)))|(% style="width:400px" %)(((
1125	1125	Disable listening mode. This is the default settings.
1126	1126	)))
1127		-|(% style="width:161px" %)(((
	1143	+|(% style="width:100px" %)(((
1128	1128
1129		-)))|(% style="width:337px" %)(((
	1145	+)))|(% style="width:400px" %)(((
1130	1130	A6 aa bb cc  same as AT+RXMODE=aa,(bb<<8 | cc)
1131	1131	)))
1132	1132
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1175	1175	)))
1176	1176
1177	1177	(((
	1194	+(((
1178	1178	(% 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.
1179	1179	)))
	1197	+)))
1180	1180
1181	1181
1182	1182	== 3.7 Buttons ==
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1196	1196	|**PWR**|Always on if there is power
1197	1197	|**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.
1198	1198
1199		-
1200	1200	= 4. Case Study =
1201	1201
1202	1202	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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1248	1248	)))
1249	1249
1250	1250
	1268	+(((
1251	1251	If device already joined network:
	1270	+)))
1252	1252
1253	1253	(% class="box infomessage" %)
1254	1254	(((
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1287	1287
1288	1288	(% style="color:red" %)**Note:**
1289	1289
	1309	+(((
1290	1290	(% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server.
1291	1291	2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
1292	1292	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.
1293	1293	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
	1314	+)))
1294	1294
1295	1295	[[image:1654162478620-421.png]]
1296	1296
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1319	1319
1320	1320	[[image:1654162535040-878.png]]
1321	1321
	1343	+(((
1322	1322	**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]].
	1345	+)))
1323	1323
	1347	+(((
1324	1324	**Step2**: Download the [[LT Image files>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]].
	1349	+)))
1325	1325
	1351	+(((
1326	1326	**Step3: **Open flashloader; choose the correct COM port to update.
	1353	+)))
1327	1327
1328	1328	(((
1329	1329	(((
	1357	+(((
1330	1330	(% 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.
1331	1331	)))
1332	1332	)))
	1361	+)))
1333	1333
1334	1334
1335	1335	[[image:image-20220602175818-12.png]]