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76	76	* Automatic RF Sense and CAD with ultra-fast AFC.
77	77	* Packet engine up to 256 bytes with CRC.
78	78
	79	+
	80	+
79	79	== 1.3 Features ==
80	80
81	81	* LoRaWAN Class A & Class C protocol (default Class C)
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87	87	* Support Modbus protocol
88	88	* Support Interrupt uplink (Since hardware version v1.2)
89	89
	92	+
	93	+
90	90	== 1.4 Applications ==
91	91
92	92	* Smart Buildings & Home Automation
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96	96	* Smart Cities
97	97	* Smart Factory
98	98
	103	+
	104	+
99	99	== 1.5 Firmware Change log ==
100	100
101	101	[[RS485-LN Image files – Download link and Change log>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/]]
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283	283	)))
284	284	)))
285	285
	292	+
	293	+
286	286	=== 3.3.2 Configure sensors ===
287	287
288	288	(((
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301	301	mm: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
302	302	)))|(% style="width:256px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
303	303
	312	+
	313	+
304	304	=== 3.3.3 Configure read commands for each sampling ===
305	305
306	306	(((
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319	319
320	320	2. How to get wanted value the from RS485 sensors returns from by 1). There are total 15 AT Commands to handle the return, commands are **AT+DATACUT1**,**AT+DATACUT2**,…, **AT+DATACUTF** corresponding to the commands from 1). All commands are of same grammar.
321	321
322		-3. Some RS485 device might has longer delay on reply, so user can use AT+CMDDL to set the timeout for getting reply after the RS485 command is sent. For example **AT+CMDDL1=1000** to send the open time to 1000ms
	332	+3. Some RS485 device might has longer delay on reply, so user can use AT+CMDDL to set the timeout for getting reply after the RS485 command is sent. For example
323	323
	334	+**AT+CMDDL1=1000** to send the open time to 1000ms
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	336	+
325	325	After we got the valid value from each RS485 commands, we need to combine them together with the command **AT+DATAUP**.
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327	327
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352	352
353	353	* **a: length for the return of AT+COMMAND**
354	354	* **b:1: grab valid value by byte, max 6 bytes. 2: grab valid value by bytes section, max 3 sections.**
355		-* **c: define the position for valid value.  **
	367	+* **c: define the position for valid value. **
356	356	)))
357	357
	370	+
358	358	**Examples:**
359	359
360	360	* Grab bytes:
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378	378
379	379	(((
380	380	Through AT+COMMANDx and AT+DATACUTx we got valid value from each RS485 commands, Assume these valid value are RETURN1, RETURN2, .., to RETURNx. The next step is how to compose the LoRa Uplink Payload by these RETURNs. The command is **AT+DATAUP.**
381		-
382		-
383	383	)))
384	384
385	385	(((
386		-(% style="color:#037691" %)**Examples: AT+DATAUP=0**
387		-
388		-
	397	+(% style="color:#4f81bd" %)**Examples: AT+DATAUP=0**
389	389	)))
390	390
391	391	(((
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406	406
407	407	[[image:1653269759169-150.png||height="513" width="716"]]
408	408
	418	+(% style="color:#4f81bd" %)**Examples: AT+DATAUP=1**
409	409
410		-(% style="color:#037691" %)**Examples: AT+DATAUP=1**
411		-
412		-
413	413	Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**Multiply UPLINKs**.
414	414
415	415	Final Payload is