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199	199
200	200	== 3.1 How it works? ==
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202		-(((
203	203	The LT is configured as LoRaWAN OTAA Class C mode by default. It has OTAA keys to join network. To connect a local LoRaWAN network, user just need to input the OTAA keys in the network server and power on the LT. It will auto join the network via OTAA. For LT-22222-L, the LED will show the Join status: After power on **TX LED** will fast blink 5 times, LT-22222-L will enter working mode and start to JOIN LoRaWAN network. **TX LED** will be on for 5 seconds after joined in network. When there is message from server, the **RX LED** will be on for 1 second.
204		-)))
205	205
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207	207	In case user can’t set the OTAA keys in the network server and has to use the existing keys from server. User can [[use AT Command>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/#H4.UseATCommand]] to set the keys in the devices.
208		-)))
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210		-(((
211	211	3.2 Example to join LoRaWAN network
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213	213
214		-(((
215	215	This chapter shows an example for how to join the TTN LoRaWAN Network. Below is the network structure, we use our LG308 as LoRaWAN gateway here.
216		-)))
217	217
218	218	[[image:image-20220523172350-1.png||height="266" width="864"]]
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314	314	**For LT-22222-L**: this mode the **DI1 and DI2** are used as counting pins.
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316		-(((
317	317	Total : 11 bytes payload
318		-)))
319	319
320	320	[[image:image-20220523180452-3.png]]
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329	329	* FIRST: Indicate this is the first packet after join network.
330	330	* DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
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332		-(((
333	333	(% style="color:red" %)Note: DO3 bit is not valid for LT-22222-L.
334		-)))
335	335
336		-(((
337	337	**To use counting mode, please run:**
338		-)))
339	339
340	340	(% class="box infomessage" %)
341	341	(((
342		-(((
343	343	**AT+MOD=2**
344	344	)))
345		-)))
346	346
347	347	(% class="box infomessage" %)
348	348	(((
349		-(((
350	350	**ATZ**
351	351	)))
352		-)))
353	353
354		-(((
355	355	(% style="color:#4f81bd" %)**AT Commands for counting:**
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357	357
358		-(((
359	359	**For LT22222-L:**
360		-)))
361	361
362	362	(% class="box infomessage" %)
363	363	(((
364		-(((
365	365	**AT+TRIG1=0,100 (set DI1 port to trigger on low level, valid signal is 100ms) **
366	366	)))
367		-)))
368	368
369	369	(% class="box infomessage" %)
370	370	(((
371		-(((
372	372	**AT+TRIG1=1,100(set DI1 port to trigger on high level, valid signal is 100ms ) **
373	373	)))
374		-)))
375	375
376	376	(% class="box infomessage" %)
377	377	(((
378		-(((
379	379	**AT+TRIG2=0,100 (set DI2 port to trigger on low level, valid signal is 100ms) **
380	380	)))
381		-)))
382	382
383	383	(% class="box infomessage" %)
384	384	(((
385		-(((
386	386	**AT+TRIG2=1,100 (set DI2 port to trigger on high level, valid signal is 100ms ) **
387	387	)))
388		-)))
389	389
390	390	(% class="box infomessage" %)
391	391	(((
392		-(((
393	393	**AT+SETCNT=1,60   (Set COUNT1 value to 60)**
394	394	)))
395		-)))
396	396
397	397	(% class="box infomessage" %)
398	398	(((
399		-(((
400	400	**AT+SETCNT=2,60   (Set COUNT2 value to 60)**
401	401	)))
402		-)))
403	403
404	404	=== 3.3.3 AT+MOD~=3, Single DI Counting + 2 x ACI ===
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