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168	168	[[image:1652953414711-647.png||height="337" width="723"]]
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170		-
	170	+(((
171	171	The RS485-BL in this example connected to two RS485 devices for demonstration, user can connect to other RS485 devices via the same method.
	172	+)))
172	172
173		-
	174	+(((
174	174	The LG308 is already set to connect to [[TTN V3 network >>url:https://www.thethingsnetwork.org/]]. So what we need to now is only configure the TTN V3:
	176	+)))
175	175
	178	+(((
176	176	**Step 1**: Create a device in TTN V3 with the OTAA keys from RS485-BL.
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177	177
	182	+(((
178	178	Each RS485-BL is shipped with a sticker with unique device EUI:
	184	+)))
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	186	+[[image:1652953462722-299.png]]
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182		-
183		-
184		-
	188	+(((
185	185	User can enter this key in their LoRaWAN Server portal. Below is TTN V3 screen shot:
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186	186
	192	+(((
187	187	Add APP EUI in the application.
	194	+)))
188	188
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	199	+[[image:image-20220519174512-1.png]]
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	201	+[[image:image-20220519174512-2.png||height="328" width="731"]]
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	203	+[[image:image-20220519174512-3.png||height="556" width="724"]]
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	205	+[[image:image-20220519174512-4.png]]
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212		-
213	213	You can also choose to create the device manually.
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215		-|(((
216		-
217		-)))
	209	+[[image:1652953542269-423.png||height="710" width="723"]]
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221		-
222	222	Add APP KEY and DEV EUI
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	213	+[[image:1652953553383-907.png||height="514" width="724"]]
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	216	+(((
227	227	**Step 2**: Power on RS485-BL and it will auto join to the TTN V3 network. After join success, it will start to upload message to TTN V3 and user can see in the panel.
	218	+)))
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	220	+[[image:1652953568895-172.png||height="232" width="724"]]
230	230
	222	+== 3.3 Configure Commands to read data ==
231	231
232		-
233		-
234		-1.
235		-11. Configure Commands to read data
236		-
	224	+(((
237	237	There are plenty of RS485 and TTL level devices in the market and each device has different command to read the valid data. To support these devices in flexible, RS485-BL supports flexible command set. User can use [[AT Commands or LoRaWAN Downlink>>path:#AT_COMMAND]] Command to configure how RS485-BL should read the sensor and how to handle the return from RS485 or TTL sensors.
	226	+)))
238	238
	228	+=== 3.3.1 onfigure UART settings for RS485 or TTL communication ===
239	239
240		-1.
241		-11.
242		-111. Configure UART settings for RS485 or TTL communication
243		-
244	244	RS485-BL can connect to either RS485 sensors or TTL sensor. User need to specify what type of sensor need to connect.
245	245
246		-1. RS485-MODBUS mode:
	232	+**~1. RS485-MODBUS mode:**
247	247
248	248	AT+MOD=1 ~/~/ Support RS485-MODBUS type sensors. User can connect multiply RS485 , Modbus sensors to the A / B pins.
249	249
	236	+**2. TTL mode:**
250	250
251		-1. TTL mode:
252		-
253	253	AT+MOD=2 ~/~/ Support TTL Level sensors, User can connect one TTL Sensor to the TXD/RXD/GND pins.
254	254
255		-
256	256	RS485-BL default UART settings is **9600, no parity, stop bit 1**. If the sensor has a different settings, user can change the RS485-BL setting to match.
257	257
258		-
259		-|**AT Commands**|**Description**|**Example**
260		-|AT+BAUDR|Set the baud rate (for RS485 connection). Default Value is: 9600.|(((
	242	+(% border="1" style="background-color:#ffffcc; color:green; width:795px" %)
	243	+|(((
	244	+**AT Commands**
	245	+)))|(% style="width:285px" %)(((
	246	+**Description**
	247	+)))|(% style="width:347px" %)(((
	248	+**Example**
	249	+)))
	250	+|(((
	251	+AT+BAUDR
	252	+)))|(% style="width:285px" %)(((
	253	+Set the baud rate (for RS485 connection). Default Value is: 9600.
	254	+)))|(% style="width:347px" %)(((
	255	+(((
261	261	AT+BAUDR=9600
	257	+)))
262	262
	259	+(((
263	263	Options: (1200,2400,4800,14400,19200,115200)
264	264	)))
265		-|AT+PARITY|(((
	262	+)))
	263	+|(((
	264	+AT+PARITY
	265	+)))|(% style="width:285px" %)(((
	266	+(((
266	266	Set UART parity (for RS485 connection)
	268	+)))
267	267
	270	+(((
268	268	Default Value is: no parity.
269		-)))|(((
	272	+)))
	273	+)))|(% style="width:347px" %)(((
	274	+(((
270	270	AT+PARITY=0
	276	+)))
271	271
	278	+(((
272	272	Option: 0: no parity, 1: odd parity, 2: even parity
273	273	)))
274		-|AT+STOPBIT|(((
	281	+)))
	282	+|(((
	283	+AT+STOPBIT
	284	+)))|(% style="width:285px" %)(((
	285	+(((
275	275	Set serial stopbit (for RS485 connection)
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276	276
	289	+(((
277	277	Default Value is: 1bit.
278		-)))|(((
	291	+)))
	292	+)))|(% style="width:347px" %)(((
	293	+(((
279	279	AT+STOPBIT=0 for 1bit
	295	+)))
280	280
	297	+(((
281	281	AT+STOPBIT=1 for 1.5 bit
	299	+)))
282	282
	301	+(((
283	283	AT+STOPBIT=2 for 2 bits
284	284	)))
	304	+)))
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1652953568895-172.png

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