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168	168	[[image:1652953414711-647.png||height="337" width="723"]]
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170		-(((
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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		-)))
173	173
174		-(((
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175	175	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		-)))
177	177
178		-(((
179	179	**Step 1**: Create a device in TTN V3 with the OTAA keys from RS485-BL.
180		-)))
181	181
182		-(((
183	183	Each RS485-BL is shipped with a sticker with unique device EUI:
184		-)))
185	185
186		-[[image:1652953462722-299.png]]
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187	187
188		-(((
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189	189	User can enter this key in their LoRaWAN Server portal. Below is TTN V3 screen shot:
190		-)))
191	191
192		-(((
193	193	Add APP EUI in the application.
194		-)))
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201		-[[image:image-20220519174512-2.png||height="328" width="731"]]
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205		-[[image:image-20220519174512-4.png]]
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207	207	You can also choose to create the device manually.
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209		-[[image:1652953542269-423.png||height="710" width="723"]]
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	217	+)))
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	220	+[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image010.png]]
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211	211	Add APP KEY and DEV EUI
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213		-[[image:1652953553383-907.png||height="514" width="724"]]
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216		-(((
217	217	**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"]]
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221	221
222		-== 3.3 Configure Commands to read data ==
223	223
224		-(((
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	234	+1.
	235	+11. Configure Commands to read data
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225	225	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		-)))
227	227
228		-=== 3.3.1 onfigure UART settings for RS485 or TTL communication ===
229	229
	240	+1.
	241	+11.
	242	+111. Configure UART settings for RS485 or TTL communication
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230	230	RS485-BL can connect to either RS485 sensors or TTL sensor. User need to specify what type of sensor need to connect.
231	231
232		-**~1. RS485-MODBUS mode:**
	246	+1. RS485-MODBUS mode:
233	233
234	234	AT+MOD=1 ~/~/ Support RS485-MODBUS type sensors. User can connect multiply RS485 , Modbus sensors to the A / B pins.
235	235
236		-**2. TTL mode:**
237	237
	251	+1. TTL mode:
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238	238	AT+MOD=2 ~/~/ Support TTL Level sensors, User can connect one TTL Sensor to the TXD/RXD/GND pins.
239	239
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240	240	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.
241	241
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		-(((
	258	+
	259	+|**AT Commands**|**Description**|**Example**
	260	+|AT+BAUDR|Set the baud rate (for RS485 connection). Default Value is: 9600.|(((
256	256	AT+BAUDR=9600
257		-)))
258	258
259		-(((
260	260	Options: (1200,2400,4800,14400,19200,115200)
261	261	)))
262		-)))
263		-|(((
264		-AT+PARITY
265		-)))|(% style="width:285px" %)(((
266		-(((
	265	+|AT+PARITY|(((
267	267	Set UART parity (for RS485 connection)
268		-)))
269	269
270		-(((
271	271	Default Value is: no parity.
272		-)))
273		-)))|(% style="width:347px" %)(((
274		-(((
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275	275	AT+PARITY=0
276		-)))
277	277
278		-(((
279	279	Option: 0: no parity, 1: odd parity, 2: even parity
280	280	)))
281		-)))
282		-|(((
283		-AT+STOPBIT
284		-)))|(% style="width:285px" %)(((
285		-(((
	274	+|AT+STOPBIT|(((
286	286	Set serial stopbit (for RS485 connection)
287		-)))
288	288
289		-(((
290	290	Default Value is: 1bit.
291		-)))
292		-)))|(% style="width:347px" %)(((
293		-(((
	278	+)))|(((
294	294	AT+STOPBIT=0 for 1bit
295		-)))
296	296
297		-(((
298	298	AT+STOPBIT=1 for 1.5 bit
299		-)))
300	300
301		-(((
302	302	AT+STOPBIT=2 for 2 bits
303	303	)))
304		-)))
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