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164	164	[[image:image-20221021110745-6.png]] ​
165	165
166	166
167		-=== 2.2.3 Connect USB – TTL to NDS03A and configure it ===
	167	+=== 2.2.2 Connect USB – TTL to NMDS200 and configure it ===
168	168
169	169
170		-User need to configure NDS03A via serial port to set the (% style="color:red" %)**Server Address** / **Uplink Topic**(%%) to define where and how-to uplink packets. NDS03A support AT Commands, user can use a USB to TTL adapter to connect to NDS03A and use AT Commands to configure it, as below.
	170	+User need to configure NMDS200 via serial port to set the (% style="color:red" %)**Server Address** / **Uplink Topic**(%%) to define where and how-to uplink packets. NMDS200 support AT Commands, user can use a USB to TTL adapter to connect to NMDS200 and use AT Commands to configure it, as below.
171	171
172	172	(% style="color:blue" %)**Connection:**
173	173
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190	190
191	191	* Flow Control: (% style="color:red" %)**None**
192	192
193		-Make sure the switch is in FLASH position, then power on NDS03A by connecting the (% style="color:orange" %)**Yellow Jumper**(%%).
	193	+Make sure the switch is in FLASH position, then power on NMDS200 by connecting the (% style="color:orange" %)**Yellow Jumper**(%%).
194	194
195	195	​[[image:image-20221021110817-7.png]]
196	196
197		-NDS03A will output system info once powered on as below, we can enter the **password: 12345678** to access AT Command input.
	197	+NMDS200 will output system info once powered on as below, we can enter the **password: 12345678** to access AT Command input.
198	198
199	199
200	200	(% style="color:red" %)**Note: the valid AT Commands can be found at:  **(%%)[[**https:~~/~~/www.dropbox.com/sh/351dwor6joz8nwh/AADn1BQaAAxLF_QMyU8NkW47a?dl=0**>>url:https://www.dropbox.com/sh/351dwor6joz8nwh/AADn1BQaAAxLF_QMyU8NkW47a?dl=0]]
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201	201
202	202
203	203
204		-=== 2.2.4 Use CoAP protocol to uplink data ===
	204	+=== 2.2.3 Use CoAP protocol to uplink data ===
205	205
206	206
207	207	(% style="color:red" %)**Note: if you don't have a CoAP server, you can refer this link to set up a CoAP server: **(%%)[[**http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/Set%20up%20CoAP%20Server/**>>url:http://wiki.dragino.com/xwiki/bin/view/Main/Set%20up%20CoAP%20Server/]]
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220	220	[[image:image-20221021110948-8.png]]
221	221
222	222
223		-After configuring the server address and (% style="color:green" %)**reset NDS03A**(%%) (via AT+ATZ ), NDS03A will start to uplink sensor values to the CoAP server.
	223	+After configuring the server address and (% style="color:green" %)**reset NMDS200**(%%) (via AT+ATZ ), NMDS200 will start to uplink sensor values to the CoAP server.
224	224
225		-[[image:image-20221118103547-9.png||height="605" width="837"]] ​
	225	+[[image:1670405841875-916.png]] ​
226	226
227	227
228		-=== 2.2.5 Use UDP protocol to uplink data(Default protocol) ===
	228	+=== 2.2.4 Use UDP protocol to uplink data(Default protocol) ===
229	229
230	230
231	231	(% style="color:blue" %)**AT Commands:**
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243	243
244	244	​
245	245
246		-=== 2.2.6 Use MQTT protocol to uplink data ===
	246	+=== 2.2.5 Use MQTT protocol to uplink data ===
247	247
248	248
249	249	(% style="color:blue" %)**AT Commands:**
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265	265	​ [[image:image-20221118103445-7.png]]
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267	267
268		-[[image:image-20221118103453-8.png||height="608" width="841"]]
	268	+[[image:1670405928926-116.png]]
269	269
270	270	​
271	271
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272	272	MQTT protocol has a much higher power consumption compare with UDP / CoAP protocol. Please check the power analyze document and adjust the uplink period to a suitable interval.
273	273
274	274
275		-=== 2.2.7 Use TCP protocol to uplink data ===
	275	+=== 2.2.6 Use TCP protocol to uplink data ===
276	276
277	277
278	278	(% style="color:blue" %)**AT Commands:**
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281	281
282	282	* (% style="color:#037691" %)**AT+SERVADDR=120.24.4.116,5600   ** (%%) ~/~/  Set TCP server address and port
283	283
284		-​ [[image:image-20221021111125-14.png]]
	284	+​ [[image:1670406036256-101.png||height="676" width="713"]]
285	285
	286	+
286	286	[[image:image-20221021111131-15.png]]
287	287
288	288	​
289	289
290		-=== 2.2.8 Change Update Interval ===
	291	+=== 2.2.7 Change Update Interval ===
291	291
292	292
293	293	User can use below command to change the (% style="color:blue" %)**uplink interval**.
294	294
295		-* (% style="color:#037691" %)**AT+TDC=14400      ** (%%) ~/~/ Set Update Interval to 14400s (4 hours)
	296	+* (% style="color:#037691" %)**AT+TDC=7200      ** (%%) ~/~/ Set Update Interval to 7200s (4 hours)
296	296
297	297	(% style="color:red" %)**NOTE:**
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