Changes for page RS485-LN – RS485 to LoRaWAN Converter User Manual

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Details

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1		-RS485-LN – RS485 to LoRaWAN Converter
	1	+RS485-LN – RS485 to LoRaWAN Converter User Manual

Content

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1		-(% style="text-align:center" %)
2		-[[image:1653266934636-343.png||height="385" width="385"]]
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5	5
6		-**RS485-LN – RS485 to LoRaWAN Converter User Manual**
7	7
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9	9	**Table of Contents:**
10	10
	17	+{{toc/}}
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15	15	= 1.Introduction =
16	16
	33	+
17	17	== 1.1 What is RS485-LN RS485 to LoRaWAN Converter ==
18	18
19	19	(((
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21	21	The Dragino RS485-LN is a (% style="color:blue" %)**RS485 to LoRaWAN Converter**(%%). It converts the RS485 signal into LoRaWAN wireless signal which simplify the IoT installation and reduce the installation/maintaining cost.
22	22	)))
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25	25	RS485-LN allows user to (% style="color:blue" %)**monitor / control RS485 devices**(%%) and reach extremely long ranges. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption. It targets professional wireless sensor network applications such as irrigation systems, smart metering, smart cities, smartphone detection, building automation, and so on.
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29	29	(% style="color:blue" %)**For data uplink**(%%), RS485-LN sends user-defined commands to RS485 devices and gets the return from the RS485 devices. RS485-LN will process these returns according to user-define rules to get the final payload and upload to LoRaWAN server.
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33	33	(% style="color:blue" %)**For data downlink**(%%), RS485-LN runs in LoRaWAN Class C. When there downlink commands from LoRaWAN server, RS485-LN will forward the commands from LoRaWAN server to RS485 devices.
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34	34
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35	35	(% style="color:blue" %)**Demo Dashboard for RS485-LN**(%%) connect to two energy meters: [[https:~~/~~/app.datacake.de/dashboard/d/58844a26-378d-4c5a-aaf5-b5b5b153447a>>url:https://app.datacake.de/dashboard/d/58844a26-378d-4c5a-aaf5-b5b5b153447a]]
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39		-[[image:1653267211009-519.png||height="419" width="724"]]
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	73	+
42	42	== 1.2 Specifications ==
43	43
44	44
45		-**Hardware System:**
	77	+(% style="color:#037691" %)**Hardware System:**
46	46
47	47	* STM32L072CZT6 MCU
48	48	* SX1276/78 Wireless Chip
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50	50	** Idle: 32mA@12v
51	51	** 20dB Transmit: 65mA@12v
52	52
53		-**Interface for Model:**
54	54
	86	+(% style="color:#037691" %)**Interface for Model:**
	87	+
55	55	* RS485
56	56	* Power Input 7~~ 24V DC.
57	57
58		-**LoRa Spec:**
59	59
	92	+(% style="color:#037691" %)**LoRa Spec:**
	93	+
60	60	* Frequency Range:
61	61	** Band 1 (HF): 862 ~~ 1020 Mhz
62	62	** Band 2 (LF): 410 ~~ 528 Mhz
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74	74	* Preamble detection.
75	75	* 127 dB Dynamic Range RSSI.
76	76	* Automatic RF Sense and CAD with ultra-fast AFC.
77		-* Packet engine up to 256 bytes with CRC.
	111	+* Packet engine up to 256 bytes with CRC
78	78
79	79
80	80
81	81	== 1.3 Features ==
82	82
	117	+
83	83	* LoRaWAN Class A & Class C protocol (default Class C)
84		-* Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865/RU864
	119	+* Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865/RU864/MA869
85	85	* AT Commands to change parameters
86	86	* Remote configure parameters via LoRa Downlink
87	87	* Firmware upgradable via program port
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93	93
94	94	== 1.4 Applications ==
95	95
	131	+
96	96	* Smart Buildings & Home Automation
97	97	* Logistics and Supply Chain Management
98	98	* Smart Metering
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104	104
105	105	== 1.5 Firmware Change log ==
106	106
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107	107	[[RS485-LN Image files – Download link and Change log>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/]]
108	108
109	109
	147	+
110	110	== 1.6 Hardware Change log ==
111	111
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112	112	(((
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114	114	v1.2: Add External Interrupt Pin.
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116	116	v1.0: Release
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121	121
122	122	= 2. Power ON Device =
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124	124	(((
125	125	The RS485-LN can be powered by 7 ~~ 24V DC power source. Connection as below
126	126
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131	131	Once there is power, the RS485-LN will be on.
132	132	)))
133	133
134		-[[image:1653268091319-405.png]]
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135	135	)))
136	136
137	137	= 3. Operation Mode =
138	138
	187	+
139	139	== 3.1 How it works? ==
140	140
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141	141	(((
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142	142	The RS485-LN 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 RS485-LN. It will auto join the network via OTAA.
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	199	+
145	145	== 3.2 Example to join LoRaWAN network ==
146	146
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147	147	Here shows an example for how to join the TTN V3 Network. Below is the network structure, we use [[LG308>>url:http://www.dragino.com/products/lora-lorawan-gateway/item/140-lg308.html]] as LoRaWAN gateway here.
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149		-[[image:1653268155545-638.png||height="334" width="724"]]
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151	151	(((
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152	152	The RS485-LN in this example connected to two RS485 devices for demonstration, user can connect to other RS485 devices via the same method. The connection is as below:
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154	154	485A+ and 485B- of the sensor are connected to RS485A and RA485B of RS485-LN respectively.
155	155
156		-[[image:1653268227651-549.png||height="592" width="720"]]
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158	158	(((
159		-The LG308 is already set to connect to [[TTN V3 network >>path:eu1.cloud.thethings.network/]]. So what we need to now is only configure the TTN V3:
	224	+The LG308 is already set to connect to [[TTN V3 network >>path:https://www.thethingsnetwork.org/]]. So what we need to now is only configure the TTN V3:
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	226	+
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163		-**Step 1**: Create a device in TTN V3 with the OTAA keys from RS485-LN.
	230	+(% style="color:blue" %)**Step 1**(%%): Create a device in TTN V3 with the OTAA keys from RS485-LN.
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171		-[[image:1652953462722-299.png]]
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173	173	(((
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175	175	User can enter this key in their LoRaWAN Server portal. Below is TTN V3 screen shot:
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178	178	(((
179		-Add APP EUI in the application.
	249	+**Add APP EUI in the application.**
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183		-[[image:image-20220519174512-1.png]]
	253	+(% aria-label="image-20220519174512-1.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220519174512-1.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
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185		-[[image:image-20220519174512-2.png||height="323" width="720"]]
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187		-[[image:image-20220519174512-3.png||height="556" width="724"]]
	257	+(% aria-label="image-20220519174512-3.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220519174512-3.png||data-widget="image" height="556" width="724"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
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189		-[[image:image-20220519174512-4.png]]
	259	+(% aria-label="image-20220519174512-4.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220519174512-4.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]]
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	263	+
191	191	You can also choose to create the device manually.
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193		-[[image:1652953542269-423.png||height="710" width="723"]]
	266	+(% aria-label="1652953542269-423.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1652953542269-423.png||data-widget="image" height="710" width="723"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
194	194
195		-Add APP KEY and DEV EUI
196	196
197		-[[image:1652953553383-907.png||height="514" width="724"]]
198	198
	270	+**Add APP KEY and DEV EUI**
199	199
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	273	+
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200	200	(((
201		-**Step 2**: Power on RS485-LN 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.
	277	+(% style="color:blue" %)**Step 2**(%%): Power on RS485-LN 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.
	278	+
	279	+
202	202	)))
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204		-[[image:1652953568895-172.png||height="232" width="724"]]
	282	+(% aria-label="1652953568895-172.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1652953568895-172.png||data-widget="image" height="232" width="724"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
205	205
	284	+
	285	+
206	206	== 3.3 Configure Commands to read data ==
207	207
	288	+
208	208	(((
209	209	(((
210		-There are plenty of RS485 devices in the market and each device has different command to read the valid data. To support these devices in flexible, RS485-LN supports flexible command set. User can use [[AT Commands>>path:#AT_COMMAND]] or LoRaWAN Downlink Command to configure what commands RS485-LN should send for each sampling and how to handle the return from RS485 devices.
	291	+(((
	292	+There are plenty of RS485 devices in the market and each device has different command to read the valid data. To support these devices in flexible, RS485-LN supports flexible command set. User can use [[AT Commands>>||anchor="H3.5ConfigureRS485-LNviaATorDownlink"]] or LoRaWAN Downlink Command to configure what commands RS485-LN should send for each sampling and how to handle the return from RS485 devices.
	293	+
	294	+
211	211	)))
	296	+)))
212	212
213	213	(((
214		-(% style="color:red" %)Note: below description and commands are for firmware version >v1.1, if you have firmware version v1.0. Please check the [[user manual v1.0>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/&file=RS485-LN_UserManual_v1.0.1.pdf]] or upgrade the firmware to v1.1
	299	+(((
	300	+(% style="color:red" %)**Note: below description and commands are for firmware version >v1.1, if you have firmware version v1.0. Please check the [[user manual v1.0>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/&file=RS485-LN_UserManual_v1.0.1.pdf]] or upgrade the firmware to v1.1**
215	215	)))
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217	217
218		-=== 3.3.1 onfigure UART settings for RS485 or TTL communication ===
	308	+=== 3.3.1 Configure UART settings for RS485 or TTL communication ===
219	219
	310	+
220	220	To use RS485-LN to read data from RS485 sensors, connect the RS485-LN A/B traces to the sensors. And user need to make sure RS485-LN use the match UART setting to access the sensors. The related commands for UART settings are:
221	221
222		-(% border="1" style="background-color:#ffffcc; color:green; width:795px" %)
223		-|(((
	313	+
	314	+(% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
	315	+|=(% style="width: 110px;" %)(((
224	224	**AT Commands**
225		-)))|(% style="width:285px" %)(((
	317	+)))|=(% style="width: 190px;" %)(((
226	226	**Description**
227		-)))|(% style="width:347px" %)(((
	319	+)))|=(% style="width: 190px;" %)(((
228	228	**Example**
229	229	)))
230		-|(((
	322	+|(% style="width:110px" %)(((
231	231	AT+BAUDR
232		-)))|(% style="width:285px" %)(((
	324	+)))|(% style="width:190px" %)(((
233	233	Set the baud rate (for RS485 connection). Default Value is: 9600.
234		-)))|(% style="width:347px" %)(((
	326	+)))|(% style="width:190px" %)(((
235	235	(((
236	236	AT+BAUDR=9600
237	237	)))
...	...	@@ -240,11 +240,11 @@
240	240	Options: (1200,2400,4800,14400,19200,115200)
241	241	)))
242	242	)))
243		-|(((
	335	+|(% style="width:110px" %)(((
244	244	AT+PARITY
245		-)))|(% style="width:285px" %)(((
	337	+)))|(% style="width:190px" %)(((
246	246	Set UART parity (for RS485 connection)
247		-)))|(% style="width:347px" %)(((
	339	+)))|(% style="width:190px" %)(((
248	248	(((
249	249	AT+PARITY=0
250	250	)))
...	...	@@ -253,9 +253,9 @@
253	253	Option: 0: no parity, 1: odd parity, 2: even parity
254	254	)))
255	255	)))
256		-|(((
	348	+|(% style="width:110px" %)(((
257	257	AT+STOPBIT
258		-)))|(% style="width:285px" %)(((
	350	+)))|(% style="width:190px" %)(((
259	259	(((
260	260	Set serial stopbit (for RS485 connection)
261	261	)))
...	...	@@ -263,7 +263,7 @@
263	263	(((
264	264
265	265	)))
266		-)))|(% style="width:347px" %)(((
	358	+)))|(% style="width:190px" %)(((
267	267	(((
268	268	AT+STOPBIT=0 for 1bit
269	269	)))
...	...	@@ -277,906 +277,1359 @@
277	277	)))
278	278	)))
279	279
	372	+
280	280	=== 3.3.2 Configure sensors ===
281	281
	375	+
282	282	(((
283	283	(((
284		-Some sensors might need to configure before normal operation. User can configure such sensor via PC and RS485 adapter or through RS485-LN AT Commands (% style="color:#4f81bd" %)**AT+CFGDEV**(%%). Each (% style="color:#4f81bd" %)**AT+CFGDEV **(%%)equals to send a RS485 command to sensors. This command will only run when user input it and won’t run during each sampling.
	378	+Some sensors might need to configure before normal operation. User can configure such sensor via PC and RS485 adapter or through RS485-LN AT Commands (% style="color:#4f81bd" %)**AT+CFGDEV**(%%). Each (% style="color:#4f81bd" %)**AT+CFGDEV **(%%)equals to send a RS485 command to sensors. This command will only run when user input it and won't run during each sampling.
	379	+
	380	+
285	285	)))
286	286	)))
287	287
288		-(% border="1" style="background-color:#ffffcc; color:green; width:806px" %)
289		-|**AT Commands**|(% style="width:418px" %)**Description**|(% style="width:256px" %)**Example**
290		-|AT+CFGDEV|(% style="width:418px" %)(((
	384	+(% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
	385	+|=(% style="width: 110px;" %)**AT Commands**|=(% style="width: 190px;" %)**Description**|=(% style="width: 190px;" %)**Example**
	386	+|AT+CFGDEV|(% style="width:110px" %)(((
	387	+(((
291	291	This command is used to configure the RS485/TTL devices; they won’t be used during sampling.
	389	+)))
292	292
	391	+(((
293	293	AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,
	393	+)))
294	294
	395	+(((
295	295	mm: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
296		-)))|(% style="width:256px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
	397	+)))
	398	+)))|(% style="width:190px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
297	297
	400	+
298	298	=== 3.3.3 Configure read commands for each sampling ===
299	299
	403	+
300	300	(((
301		-RS485-BL is a battery powered device; it will sleep most of time. And wake up on each period and read RS485 / TTL sensor data and uplink.
	405	+During each sampling, we need confirm what commands we need to send to the RS485 sensors to read data. After the RS485 sensors send back the value, it normally include some bytes and we only need a few from them for a shorten payload.
	406	+
	407	+To save the LoRaWAN network bandwidth, we might need to read data from different sensors and combine their valid value into a short payload.
	408	+
	409	+This section describes how to achieve above goals.
	410	+
	411	+During each sampling, the RS485-LN can support 15 commands to read sensors. And combine the return to one or several uplink payloads.
	412	+
	413	+
	414	+(% style="color:#037691" %)**Each RS485 commands include two parts:**
	415	+
	416	+
	417	+~1. What commands RS485-LN will send to the RS485 sensors. There are total 15 commands from **AT+COMMAD1**, **ATCOMMAND2**,…, to **AT+COMMANDF**. All commands are of same grammar.
	418	+
	419	+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.
	420	+
	421	+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
	422	+
	423	+
	424	+After we got the valid value from each RS485 commands, we need to combine them together with the command **AT+DATAUP**.
	425	+
	426	+Below are examples for the how above AT Commands works.
	427	+
	428	+
	429	+(% style="color:#037691" %)**AT+COMMANDx **(%%)**: **This command will be sent to RS485 devices during each sampling, Max command length is 14 bytes. The grammar is:
	430	+
	431	+(% border="1" style="background-color:#4bacc6; color:white; width:499px" %)
	432	+|(% style="width:496px" %)(((
	433	+(% style="color:#037691" %)**AT+COMMANDx=xx xx xx xx xx xx xx xx xx xx xx xx,m**
	434	+
	435	+**xx xx xx xx xx xx xx xx xx xx xx xx: The RS485 command to be sent**
	436	+
	437	+**m: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command**
302	302	)))
303	303
304		-(((
305		-During each sampling, we need to confirm what commands we need to send to the sensors to read data. After the RS485/TTL sensors send back the value, it normally includes some bytes and we only need a few from them for a shorten payload.
	440	+For example, if we have a RS485 sensor. The command to get sensor value is: 01 03 0B B8 00 02 46 0A. Where 01 03 0B B8 00 02 is the Modbus command to read the register 0B B8 where stored the sensor value. The 46 0A is the CRC-16/MODBUS which calculate manually.
	441	+
	442	+In the RS485-LN, we should use this command AT+COMMAND1=01 03 0B B8 00 02,1 for the same.
	443	+
	444	+
	445	+(% style="color:#037691" %)**AT+DATACUTx **(%%)**: **This command defines how to handle the return from AT+COMMANDx, max return length is 100 bytes.
	446	+
	447	+(% border="1" style="background-color:#4bacc6; color:white; width:510px" %)
	448	+|(% style="width:510px" %)(((
	449	+**AT+DATACUTx=a,b,c**
	450	+
	451	+* **a: length for the return of AT+COMMAND**
	452	+* **b:1: grab valid value by byte, max 6 bytes. 2: grab valid value by bytes section, max 3 sections.**
	453	+* **c: define the position for valid value.  **
306	306	)))
307	307
	456	+**Examples:**
	457	+
	458	+
	459	+* (% style="color:#037691" %)**Grab bytes**
	460	+
	461	+(% aria-label="image-20220602153621-1.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602153621-1.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
	462	+
	463	+
	464	+
	465	+* (% style="color:#037691" %)**Grab a section**
	466	+
	467	+(% aria-label="image-20220602153621-2.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602153621-2.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
	468	+
	469	+
	470	+
	471	+* (% style="color:#037691" %)**Grab different sections**
	472	+
	473	+(% aria-label="image-20220602153621-3.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602153621-3.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
	474	+
	475	+
	476	+
	477	+)))
	478	+
	479	+=== 3.3.4 Compose the uplink payload ===
	480	+
	481	+
308	308	(((
309		-To save the LoRaWAN network bandwidth, we might need to read data from different sensors and combine their valid value into a short payload.
	483	+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.**
	484	+
	485	+
310	310	)))
311	311
312	312	(((
313		-This section describes how to achieve above goals.
	489	+(% style="color:#037691" %)**Examples: AT+DATAUP=0**
	490	+
	491	+
314	314	)))
315	315
316	316	(((
317		-During each sampling, the RS485-BL can support 15 commands to read sensors. And combine the return to one or several uplink payloads.
	495	+Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**A SIGNLE UPLINK**.
318	318	)))
319	319
320	320	(((
321		-**Command from RS485-BL to Sensor:**
	499	+Final Payload is (% style="color:#4f81bd" %)**Battery Info+PAYVER + VALID Value from RETURN1 + Valid Value from RETURN2 + … + RETURNx**
322	322	)))
323	323
324	324	(((
325		-RS485-BL can send out pre-set max 15 strings via **AT+COMMAD1**, **ATCOMMAND2**,…, to **AT+COMMANDF** . All commands are of same grammar.
	503	+Where PAYVER is defined by AT+PAYVER, below is an example screen shot.
	504	+
	505	+
326	326	)))
327	327
	508	+(% aria-label="1653269759169-150.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1653269759169-150.png||data-widget="image" height="513" width="716"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
	509	+
	510	+
	511	+(% style="color:#037691" %)**Examples: AT+DATAUP=1**
	512	+
	513	+
	514	+Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**Multiply UPLINKs**.
	515	+
	516	+Final Payload is (% style="color:#4f81bd" %)**Battery Info+PAYVER + PAYLOAD COUNT + PAYLOAD# + DATA**
	517	+
	518	+
	519	+1. PAYVER: Defined by AT+PAYVER
	520	+1. PAYLOAD COUNT: Total how many uplinks of this sampling.
	521	+1. PAYLOAD#: Number of this uplink. (from 0,1,2,3…,to PAYLOAD COUNT)
	522	+1. DATA: Valid value: max 8 bytes for each uplink so each uplink <= 11 bytes. For the last uplink, DATA will might less than 8 bytes
	523	+
	524	+(% aria-label="image-20220602155039-4.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602155039-4.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
	525	+
	526	+
	527	+So totally there will be 3 uplinks for this sampling, each uplink include 8 bytes DATA
	528	+
	529	+DATA1=RETURN1 Valid Value + the first two of Valid value of RETURN10= **20 20 0a 33 90 41 02 aa**
	530	+
	531	+DATA2=3^^rd^^ ~~ 10^^th^^ byte of Valid value of RETURN10= **05 81 0a 20 20 20 20 2d**
	532	+
	533	+DATA3=the rest of Valid value of RETURN10= **30**
	534	+
	535	+
	536	+(% style="color:red" %)**Notice: In firmware v1.3, the Max bytes has been changed according to the max bytes in different Frequency Bands for lowest SF. As below:**
	537	+
	538	+
	539	+ ~* For AU915/AS923 bands, if UplinkDwell time=0, max 51 bytes for each uplink.
	540	+
	541	+ * For AU915/AS923 bands, if UplinkDwell time=0, max 11 bytes for each uplink.
	542	+
	543	+ * For US915 band, max 11 bytes for each uplink.
	544	+
	545	+ ~* For all other bands: max 51 bytes for each uplink.
	546	+
	547	+(% style="color:red" %)*** When AT+DATAUP=1, the maximum number of segments is 15, and the maximum total number of bytes is 1500;**
	548	+
	549	+(% style="color:red" %)** When AT+DATAUP=1 and AT+ADR=0, the maximum number of bytes of each payload is determined by the DR value. (Since v1.4.0)**
	550	+
	551	+
	552	+(% style="color:#4f81bd" %)**If the data is empty, return to the display（Since v1.4.0）**
	553	+
	554	+1 )  When (% style="color:blue" %)**AT+MOD=1**(%%), if the data intercepted by** AT+DATACUT** or **AT+MBFUN** is empty, it will display **NULL**, and the payload will be filled with **n FFs**.
	555	+
	556	+
	557	+[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/test/WebHome/image-20220824114359-3.png?width=1106&height=297&rev=1.1||alt="image-20220824114359-3.png" height="297" width="1106"]]
	558	+
	559	+
	560	+
	561	+2 )  When (% style="color:blue" %)**AT+MOD=2**(%%), if the data intercepted by **AT+DATACUT** or **AT+MBFUN** is empty, it will display **NULL**, and the payload will be filled with **n 00s**.
	562	+
	563	+
	564	+[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/test/WebHome/image-20220824114330-2.png?rev=1.1||alt="image-20220824114330-2.png"]]
	565	+
	566	+
	567	+
	568	+Below are the uplink payloads:
	569	+
	570	+
	571	+(% aria-label="1654157178836-407.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1654157178836-407.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
	572	+
	573	+
	574	+
	575	+=== 3.3.5 Uplink on demand ===
	576	+
	577	+
	578	+Except uplink periodically, RS485-LN is able to uplink on demand. The server send downlink command to RS485-LN and RS485 will uplink data base on the command.
	579	+
	580	+(% style="color:blue" %)**Downlink control command:**
	581	+
	582	+(% style="color:#4472c4" %)** 0x08 command**(%%): Poll an uplink with current command set in RS485-LN.
	583	+
	584	+(% style="color:#4472c4" %)** 0xA8 command**(%%): Send a command to RS485-LN and uplink the output from sensors.
	585	+
	586	+
	587	+
	588	+=== 3.3.6 Uplink on Interrupt ===
	589	+
	590	+
	591	+RS485-LN support external Interrupt uplink since hardware v1.2 release.
	592	+
	593	+
	594	+(% aria-label="1654157342174-798.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1654157342174-798.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
	595	+
	596	+Connect the Interrupt pin to RS485-LN INT port and connect the GND pin to V- port. When there is a high voltage (Max 24v) on INT pin. Device will send an uplink packet.
	597	+
	598	+
	599	+
	600	+== 3.4 Uplink Payload ==
	601	+
	602	+
	603	+(% aria-label="image-20220606110929-1.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220606110929-1.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]]
	604	+
	605	+(% title="Click and drag to resize" %)​
	606	+
	607	+Below is the decoder for the first 3 bytes. The rest bytes are dynamic depends on different RS485 sensors.
	608	+
	609	+
	610	+
	611	+== 3.5 Configure RS485-LN via AT or Downlink ==
	612	+
	613	+
328	328	(((
329		-**Handle return from sensors to RS485-BL**:
	615	+User can configure RS485-LN via AT Commands or LoRaWAN Downlink Commands
330	330	)))
331	331
332	332	(((
333		-After RS485-BL send out a string to sensor, RS485-BL will wait for the return from RS485 or TTL sensor. And user can specify how to handle the return, by **AT+DATACUT or AT+SEARCH commands**
	619	+There are two kinds of Commands:
334	334	)))
335	335
336	336	* (((
337		-**AT+DATACUT**
	623	+(% style="color:#4f81bd" %)**Common Commands**(%%): They should be available for each sensor, such as: change uplink interval, reset device. For firmware v1.3, user can find what common commands it supports: [[AT Commands and Downlink Command>>doc:Main.End Device AT Commands and Downlink Command.WebHome]]
338	338	)))
339	339
	626	+* (((
	627	+(% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for RS485-LN.  User can see these commands below:
	628	+)))
	629	+
340	340	(((
341		-When the return value from sensor have fix length and we know which position the valid value we should get, we can use AT+DATACUT command.
	631	+
342	342	)))
343	343
	634	+
	635	+
	636	+=== 3.5.1 Common Commands ===
	637	+
	638	+
	639	+They should be available for each of Dragino Sensors, such as: change uplink interval, reset device. For firmware v1.3, user can find what common commands it supports: [[End Device AT Commands and Downlink Command>>doc:Main.End Device AT Commands and Downlink Command.WebHome]]
	640	+
	641	+
	642	+
	643	+=== 3.5.2 Downlink Response(Since firmware v1.4) ===
	644	+
	645	+
	646	+Response feature is added to the server's downlink, a special package with a FPort of 200 will be uploaded immediately after receiving the data sent by the server.
	647	+
	648	+
	649	+(% aria-label="image-20220602163333-5.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602163333-5.png||data-widget="image" height="263" width="1160"]]
	650	+
	651	+(% title="Click and drag to resize" %)​
	652	+
	653	+The first byte of this package represents whether the configuration is successful, 00 represents failure, 01 represents success. Except for the first byte, the other is the previous downlink. (All commands except A8 type commands are applicable)
	654	+
	655	+
	656	+
	657	+=== 3.5.3 Sensor related commands ===
	658	+
	659	+
	660	+
	661	+
	662	+==== (% style="color:blue" %)**RS485 Debug Command**(%%) ====
	663	+
	664	+
	665	+(((
	666	+This command is used to configure the RS485 devices; they won't be used during sampling.
	667	+)))
	668	+
	669	+(((
	670	+* (% style="color:#037691" %)**AT Command**
	671	+
	672	+(((
	673	+(% style="color:#4472c4" %)** AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m**  (%%) m: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
	674	+)))
	675	+)))
	676	+
	677	+(((
	678	+
	679	+)))
	680	+
344	344	* (((
345		-**AT+SEARCH**
	682	+(% style="color:#037691" %)**Downlink Payload**
346	346	)))
347	347
348	348	(((
349		-When the return value from sensor is dynamic length and we are not sure which bytes the valid data is, instead, we know what value the valid value following. We can use AT+SEARCH to search the valid value in the return string.
	686	+Format: (% style="color:#4472c4" %)** A8 MM NN XX XX XX XX YY**
350	350	)))
351	351
352	352	(((
353		-**Define wait timeout:**
	690	+Where:
354	354	)))
355	355
	693	+* (((
	694	+MM: 1: add CRC-16/MODBUS ; 0: no CRC
	695	+)))
	696	+* (((
	697	+NN: The length of RS485 command
	698	+)))
	699	+* (((
	700	+XX XX XX XX: RS485 command total NN bytes
	701	+)))
	702	+* (((
356	356	(((
357		-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
	704	+YY: How many bytes will be uplink from the return of this RS485 command,
358	358	)))
359	359
	707	+* (((
	708	+if YY=0, RS485-LN will execute the downlink command without uplink;
	709	+)))
	710	+* (((
	711	+if YY>0, RS485-LN will uplink total YY bytes from the output of this RS485 command; Fport=200
	712	+)))
	713	+* (((
	714	+if YY=FF, RS485-LN will uplink RS485 output with the downlink command content; Fport=200.
	715	+)))
	716	+)))
	717	+
360	360	(((
361		-After we got the valid value from each RS485 commands, we need to combine them together with the command **AT+DATAUP**.
	719	+
	720	+
	721	+(% style="color:blue" %)**Example 1:**  (%%) ~-~-> Configure without ask for uplink (YY=0)
362	362	)))
363	363
364		-**Examples:**
	724	+(((
	725	+To connect a Modbus Alarm with below commands.
	726	+)))
365	365
366		-Below are examples for the how above AT Commands works.
	728	+* (((
	729	+The command to active alarm is: 0A 05 00 04 00 01 4C B0. Where 0A 05 00 04 00 01 is the Modbus command to read the register 00 40 where stored the DI status. The 4C B0 is the CRC-16/MODBUS which calculate manually.
	730	+)))
367	367
368		-**AT+COMMANDx : **This command will be sent to RS485/TTL devices during each sampling, Max command length is 14 bytes. The grammar is:
	732	+* (((
	733	+The command to deactivate alarm is: 0A 05 00 04 00 00 8D 70. Where 0A 05 00 04 00 00 is the Modbus command to read the register 00 40 where stored the DI status. The 8D 70 is the CRC-16/MODBUS which calculate manually.
	734	+)))
369	369
370		-(% border="1" class="table-bordered" %)
371		-|(((
372		-**AT+COMMANDx=xx xx xx xx xx xx xx xx xx xx xx xx,m**
	736	+(((
	737	+
373	373
374		-**xx xx xx xx xx xx xx xx xx xx xx xx: The RS485 command to be sent**
	739	+So if user want to use downlink command to control to RS485 Alarm, he can use:
	740	+)))
375	375
376		-**m: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command**
	742	+(((
	743	+(% style="color:#4f81bd" %)**A8 01 06 0A 05 00 04 00 01 00**(%%): to activate the RS485 Alarm
377	377	)))
378	378
379	379	(((
380		-For example, if we have a RS485 sensor. The command to get sensor value is: 01 03 0B B8 00 02 46 0A. Where 01 03 0B B8 00 02 is the Modbus command to read the register 0B B8 where stored the sensor value. The 46 0A is the CRC-16/MODBUS which calculate manually.
	747	+(% style="color:#4f81bd" %)**A8 01 06 0A 05 00 04 00 00 00**(%%): to deactivate the RS485 Alarm
381	381	)))
382	382
383	383	(((
384		-In the RS485-BL, we should use this command AT+COMMAND1=01 03 0B B8 00 02,1 for the same.
	751	+A8 is type code and 01 means add CRC-16/MODBUS at the end, the 3^^rd^^ byte is 06, means the next 6 bytes are the command to be sent to the RS485 network, the final byte 00 means this command don’t need to acquire output.
385	385	)))
386	386
387	387	(((
388		-**AT+SEARCHx**: This command defines how to handle the return from AT+COMMANDx.
	755	+
389	389	)))
390	390
391		-(% border="1" class="table-bordered" %)
392		-|(((
393		-**AT+SEARCHx=aa,xx xx xx xx xx**
	758	+(((
	759	+(% style="color:blue" %)**Example 2:**  (%%) ~-~-> Configure with requesting uplink and original downlink command (**YY=FF**)
	760	+)))
394	394
395		-* **aa: 1: prefix match mode; 2: prefix and suffix match mode**
396		-* **xx xx xx xx xx: match string. Max 5 bytes for prefix and 5 bytes for suffix**
	762	+(((
	763	+User in IoT server send a downlink command: (% style="color:#4f81bd" %)**A8 01 06 0A 08 00 04 00 01 YY**
	764	+)))
397	397
	766	+(((
398	398
399	399	)))
400	400
401		-**Examples:**
	770	+(((
	771	+(((
	772	+RS485-LN got this downlink command and send (% style="color:#4f81bd" %)**0A 08 00 04 00 01 **(%%)to Modbus network. One of the RS485 sensor in the network send back Modbus reply **0A 08 00 04 00 00**. RS485-LN get this reply and combine with the original downlink command and uplink. The uplink message is:  **A8** (% style="color:#4f81bd" %)**0A 08 00 04 00  **(% style="color:red" %)**01 06** ** **(% style="color:green" %)**0A 08 00 04 00 00**
	773	+)))
402	402
403		-~1. For a return string from AT+COMMAND1: 16 0c 1e 56 34 2e 30 58 5f 36 41 30 31 00 49
	775	+
	776	+)))
404	404
405		-If we set AT+SEARCH1=1,1E 56 34.      (max 5 bytes for prefix)
	778	+(((
	779	+ (% aria-label="1654159460680-153.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1654159460680-153.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
	780	+)))
406	406
407		-The valid data will be all bytes after 1E 56 34 , so it is (% style="background-color:yellow" %)** 2e 30 58 5f 36 41 30 31 00 49**
408	408
409		-[[image:1653269403619-508.png]]
410	410
411		-2. For a return string from AT+COMMAND1:  16 0c 1e 56 34 2e 30 58 5f 36 41 30 31 00 49
412	412
413		-If we set AT+SEARCH1=2, 1E 56 34+31 00 49
	785	+==== (% style="color:blue" %)**Set Payload version**(%%) ====
414	414
415		-Device will search the bytes between 1E 56 34 and 31 00 49. So it is (% style="background-color:yellow" %)** 2e 30 58 5f 36 41 30**
416	416
417		-[[image:1653269438444-278.png]]
	788	+(((
	789	+This is the first byte of the uplink payload. RS485-LN can connect to different sensors. User can set the PAYVER field to tell server how to decode the current payload.
	790	+)))
418	418
419		-**AT+DATACUTx : **This command defines how to handle the return from AT+COMMANDx, max return length is 45 bytes.
	792	+(((
	793	+* (% style="color:#037691" %)**AT Command:**
420	420
421		-|(((
422		-**AT+DATACUTx=a,b,c**
	795	+(% style="color:#4472c4" %)** AT+PAYVER:    ** (%%) Set PAYVER field = 1
423	423
424		-* **a: length for the return of AT+COMMAND**
425		-* **b:1: grab valid value by byte, max 6 bytes. 2: grab valid value by bytes section, max 3 sections.**
426		-* **c: define the position for valid value.  **
	797	+
427	427	)))
428	428
429		-Examples:
	800	+* (((
	801	+(% style="color:#037691" %)**Downlink Payload:**
	802	+)))
430	430
431		-* Grab bytes:
	804	+(((
	805	+(% style="color:#4472c4" %)** 0xAE 01** (%%) ~-~->  Set PAYVER field =  0x01
	806	+)))
432	432
433		-[[image:1653269551753-223.png||height="311" width="717"]]
	808	+(((
	809	+(% style="color:#4472c4" %)** 0xAE 0F**   (%%) ~-~->  Set PAYVER field =  0x0F
	810	+)))
434	434
435		-* Grab a section.
436	436
437		-[[image:1653269568276-930.png||height="325" width="718"]]
	813	+1 )  Add the interrupt flag at the highest bit of the Payver byte, that is, Byte7 of the first byte. (Since v1.4.0)
438	438
439		-* Grab different sections.
	815	+[[image:image-20220824145428-2.png||height="168" width="1300"]]
440	440
441		-[[image:1653269593172-426.png||height="303" width="725"]]
442	442
443		-(% style="color:red" %)**Note:**
	818	+2 )  if the data intercepted by AT+DATACUT or AT+MBFUN is empty, it will display NULL, and the payload will be filled with n FFs.
444	444
445		-AT+SEARCHx and AT+DATACUTx can be used together, if both commands are set, RS485-BL will first process AT+SEARCHx on the return string and get a temporary string, and then process AT+DATACUTx on this temporary string to get the final payload. In this case, AT+DATACUTx need to set to format AT+DATACUTx=0,xx,xx where the return bytes set to 0.
446	446
447		-Example:
	821	+[[image:image-20220824145428-3.png||height="308" width="1200"]]
448	448
449		-(% style="color:red" %)AT+COMMAND1=11 01 1E D0,0
450	450
451		-(% style="color:red" %)AT+SEARCH1=1,1E 56 34
452	452
453		-(% style="color:red" %)AT+DATACUT1=0,2,1~~5
454	454
455		-(% style="color:red" %)Return string from AT+COMMAND1: 16 0c 1e 56 34 2e 30 58 5f 36 41 30 31 00 49
	826	+==== (% style="color:blue" %)**Set RS485 Sampling Commands**(%%) ====
456	456
457		-(% style="color:red" %)String after SEARCH command: 2e 30 58 5f 36 41 30 31 00 49
458	458
459		-(% style="color:red" %)Valid payload after DataCUT command: 2e 30 58 5f 36
	829	+(((
	830	+AT+COMMANDx or AT+DATACUTx
	831	+)))
460	460
461		-[[image:1653269618463-608.png]]
	833	+(((
	834	+These three commands are used to configure how the RS485-LN polling data from Modbus device. Detail of usage please see : [[polling RS485 device>>||anchor="H3.3.3Configurereadcommandsforeachsampling"]].
	835	+)))
462	462
463		-=== 3.3.4 Compose the uplink payload ===
	837	+(((
	838	+
	839	+)))
464	464
	841	+* (((
	842	+(% style="color:#037691" %)**AT Command:**
	843	+)))
	844	+
	845	+(% style="color:#4472c4" %)** AT+COMMANDx:    ** (%%) Configure RS485 read command to sensor.
	846	+
	847	+(% style="color:#4472c4" %)** AT+DATACUTx:        **(%%) Configure how to handle return from RS485 devices.
	848	+
	849	+
	850	+* (((
	851	+(% style="color:#037691" %)**Downlink Payload:**
	852	+)))
	853	+
465	465	(((
466		-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.**
	855	+(% style="color:#4472c4" %)** 0xAF**(%%) downlink command can be used to set AT+COMMANDx or AT+DATACUTx.
	856	+
	857	+
467	467	)))
468	468
469	469	(((
470		-(% style="color:#4f81bd" %)**Examples: AT+DATAUP=0**
	861	+(% style="color:red" %)**Note : if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.**
	862	+
	863	+
471	471	)))
472	472
473	473	(((
474		-Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**A SIGNLE UPLINK**.
	867	+Format: (% style="color:#4472c4" %)** AF MM NN LL XX XX XX XX YY**
475	475	)))
476	476
477	477	(((
478		-Final Payload is
	871	+Where:
479	479	)))
480	480
	874	+* (((
	875	+MM: the ATCOMMAND or AT+DATACUT to be set. Value from 01 ~~ 0F,
	876	+)))
	877	+* (((
	878	+NN:  0: no CRC; 1: add CRC-16/MODBUS ; 2: set the AT+DATACUT value.
	879	+)))
	880	+* (((
	881	+LL:  The length of AT+COMMAND or AT+DATACUT command
	882	+)))
	883	+* (((
	884	+XX XX XX XX: AT+COMMAND or AT+DATACUT command
	885	+)))
	886	+* (((
	887	+YY:  If YY=0, RS485-LN will execute the downlink command without uplink; if YY=1, RS485-LN will execute an uplink after got this command.
	888	+)))
	889	+
481	481	(((
482		-(% style="color:#4f81bd" %)**Battery Info+PAYVER + VALID Value from RETURN1 + Valid Value from RETURN2 + … + RETURNx**
	891	+
	892	+
	893	+**Example:**
483	483	)))
484	484
485	485	(((
486		-Where PAYVER is defined by AT+PAYVER, below is an example screen shot.
	897	+(% style="color:#037691" %)**AF 03 01 06 0A 05 00 04 00 01 00**(%%): Same as AT+COMMAND3=0A 05 00 04 00 01,1
487	487	)))
488	488
489		-[[image:1653269759169-150.png||height="513" width="716"]]
	900	+(((
	901	+(% style="color:#037691" %)**AF 03 02 06**(% style="color:orange" %)** 10 **(% style="color:red" %)**01 **(% style="color:green" %)**05 06 09 0A**(% style="color:#037691" %)** 00**(%%): Same as AT+DATACUT3=(% style="color:orange" %)**16**(%%),(% style="color:red" %)**1**(%%),(% style="color:green" %)**5+6+9+10**
	902	+)))
490	490
491		-(% style="color:#4f81bd" %)**Examples: AT+DATAUP=1**
	904	+(((
	905	+(% style="color:#037691" %)**AF 03 02 06 **(% style="color:orange" %)**0B**(% style="color:red" %)** 02 **(% style="color:green" %)**05 07 08 0A **(% style="color:#037691" %)**00**(%%): Same as AT+DATACUT3=(% style="color:orange" %)**11**(%%),(% style="color:red" %)**2**(%%),(% style="color:green" %)**5~~7+8~~10**
	906	+)))
492	492
493		-Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**Multiply UPLINKs**.
494	494
495		-Final Payload is
496	496
497		-(% style="color:#4f81bd" %)**Battery Info+PAYVER + PAYLOAD COUNT + PAYLOAD# + DATA**
498	498
499		-1. Battery Info (2 bytes): Battery voltage
500		-1. PAYVER (1 byte): Defined by AT+PAYVER
501		-1. PAYLOAD COUNT (1 byte): Total how many uplinks of this sampling.
502		-1. PAYLOAD# (1 byte): Number of this uplink. (from 0,1,2,3…,to PAYLOAD COUNT)
503		-1. DATA: Valid value: max 6 bytes(US915 version here, Notice*!) for each uplink so each uplink <= 11 bytes. For the last uplink, DATA will might less than 6 bytes
	911	+==== (% style="color:blue" %)**Fast command to handle MODBUS device**(%%) ====
504	504
505		-[[image:1653269916228-732.png||height="433" width="711"]]
506	506
	914	+(((
	915	+(% style="color:#4472c4" %)** AT+MBFUN**(%%) is valid since v1.3 firmware version. The command is for fast configure to read Modbus devices. It is only valid for the devices which follow the [[MODBUS-RTU protocol>>url:https://www.modbustools.com/modbus.html]].
	916	+)))
507	507
508		-So totally there will be 3 uplinks for this sampling, each uplink includes 6 bytes DATA
	918	+(((
	919	+This command is valid since v1.3 firmware version
	920	+)))
509	509
510		-DATA1=RETURN1 Valid Value = (% style="background-color:green; color:white" %)20 20 0a 33 90 41
	922	+(((
	923	+AT+MBFUN can auto read the Modbus function code: 01, 02, 03 or 04. AT+MBFUN has lower priority vs AT+DATACUT command. If AT+DATACUT command is configured, AT+MBFUN will be ignore.
	924	+)))
511	511
512		-DATA2=1^^st^^ ~~ 6^^th^^ byte of Valid value of RETURN10=(% style="background-color:green; color:white" %) 02 aa 05 81 0a 20
	926	+(((
	927	+
	928	+)))
513	513
514		-DATA3=7^^th^^ ~~ 11^^th^^ bytes of Valid value of RETURN10 = (% style="background-color:green; color:white" %)20 20 20 2d 30
	930	+(((
	931	+**Example:**
	932	+)))
515	515
516		-Below are the uplink payloads:
	934	+* (((
	935	+AT+MBFUN=1 and AT+DATACUT1/AT+DATACUT2  are not configure (0,0,0). So RS485-LN.
	936	+)))
	937	+* (((
	938	+AT+COMMAND1= 01 03 00 10 00 08,1  ~-~-> read slave address 01 , function code 03, start address 00 01, quantity of registers 00 08.
	939	+)))
	940	+* (((
	941	+AT+COMMAND2= 01 02 00 40 00 10,1  ~-~-> read slave address 01 , function code 02, start address 00 40, quantity of inputs 00 10.
517	517
518		-[[image:1653270130359-810.png]]
	943	+
	944	+)))
519	519
	946	+(% aria-label="image-20220602165351-6.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602165351-6.png||data-widget="image"]](% title="Click and drag to resize" %)​
520	520
521		-(% style="color:red" %)**Notice: the Max bytes is according to the max support bytes in different Frequency Bands for lowest SF. As below:**
	948	+(% aria-label="image-20220602165351-7.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602165351-7.png||data-widget="image"]](% title="Click and drag to resize" %)​
522	522
523		- ~* For AU915/AS923 bands, if UplinkDwell time=0, max 51 bytes for each uplink ( so 51 -5 = 46 max valid date)
524	524
525		- * For AU915/AS923 bands, if UplinkDwell time=1, max 11 bytes for each uplink ( so 11 -5 = 6 max valid date).
526	526
527		- * For US915 band, max 11 bytes for each uplink ( so 11 -5 = 6 max valid date).
528	528
529		- ~* For all other bands: max 51 bytes for each uplink  ( so 51 -5 = 46 max valid date).
	953	+==== (% style="color:blue" %)**RS485 command timeout**(%%) ====
530	530
531		-=== 3.3.5 Uplink on demand ===
532	532
533		-Except uplink periodically, RS485-BL is able to uplink on demand. The server sends downlink command to RS485-BL and RS485 will uplink data base on the command.
	956	+(((
	957	+Some Modbus device has slow action to send replies. This command is used to configure the RS485-LN to use longer time to wait for their action.
	958	+)))
534	534
535		-Downlink control command:
	960	+(((
	961	+Default value: 0, range:  0 ~~ 65 seconds
	962	+)))
536	536
537		-[[0x08 command>>path:#downlink_08]]: Poll an uplink with current command set in RS485-BL.
	964	+(((
	965	+* (% style="color:#037691" %)** AT Command:**
538	538
539		-[[0xA8 command>>path:#downlink_A8]]: Send a command to RS485-BL and uplink the output from sensors.
	967	+(% style="color:#4472c4" %)** AT+CMDDLaa=hex(bb cc)*1000**
	968	+)))
540	540
	970	+(((
	971	+
541	541
	973	+**Example:**
	974	+)))
542	542
543		-1.
544		-11.
545		-111. Uplink on Interrupt
	976	+(((
	977	+(% style="color:#4472c4" %)** AT+CMDDL1=1000** (%%)to send the open time to 1000ms
	978	+)))
546	546
547		-Put the interrupt sensor between 3.3v_out and GPIO ext.[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image022.png]]
	980	+(((
	981	+
	982	+)))
548	548
549		-AT+INTMOD=0  Disable Interrupt
	984	+* (((
	985	+(% style="color:#037691" %)** Downlink Payload:**
	986	+)))
550	550
551		-AT+INTMOD=1  Interrupt trigger by rising or falling edge.
	988	+(((
	989	+(% style="color:#4472c4" %)** 0x AA aa bb cc**(%%) Same as: AT+CMDDLaa=hex(bb cc)*1000
	990	+)))
552	552
553		-AT+INTMOD=2  Interrupt trigger by falling edge. ( Default Value)
	992	+(((
	993	+
554	554
555		-AT+INTMOD=3  Interrupt trigger by rising edge.
	995	+**Example:**
	996	+)))
556	556
	998	+(((
	999	+**0xAA 01 00 01**  ~-~-> Same as  **AT+CMDDL1=1000 ms**
	1000	+)))
557	557
558		-1.
559		-11. Uplink Payload
560	560
561		-|**Size(bytes)**|**2**|**1**|**Length depends on the return from the commands**
562		-|Value|(((
563		-Battery(mV)
564	564
565		-&
566	566
567		-Interrupt _Flag
568		-)))|(((
569		-PAYLOAD_VER
	1005	+==== (% style="color:blue" %)**Uplink payload mode**(%%) ====
570	570
	1007	+
	1008	+(((
	1009	+Define to use one uplink or multiple uplinks for the sampling.
	1010	+)))
	1011	+
	1012	+(((
	1013	+The use of this command please see: [[Compose Uplink payload>>||anchor="H3.3.4Composetheuplinkpayload"]]
	1014	+
571	571
572		-)))|If the valid payload is too long and exceed the maximum support payload length in server, server will show payload not provided in the LoRaWAN server.
	1016	+)))
573	573
574		-Below is the decoder for the first 3 bytes. The rest bytes are dynamic depends on different RS485 sensors.
	1018	+(((
	1019	+* (% style="color:#037691" %)** AT Command:**
575	575
	1021	+(% style="color:#4472c4" %)** AT+DATAUP=0**
576	576
577		-function Decoder(bytes, port) {
	1023	+(% style="color:#4472c4" %)** AT+DATAUP=1**
578	578
579		-~/~/Payload Formats of RS485-BL Deceive
	1025	+
	1026	+)))
580	580
581		-return {
	1028	+(% style="color:#4472c4" %)** 0xAD 01 00 00 14** (%%) **~-~->** Same as AT+DATAUP=1，20000  ~/~/  (00 00 14 is 20 seconds)
582	582
583		- ~/~/Battery,units:V
	1030	+Each uplink is sent to the server at 20-second intervals when segmented.
584	584
585		- BatV:((bytes[0]<<8 | bytes[1])&0x7fff)/1000,
586	586
587		- ~/~/GPIO_EXTI
	1033	+* (((
	1034	+(% style="color:#037691" %)** Downlink Payload:**
	1035	+)))
588	588
589		- EXTI_Trigger:(bytes[0] & 0x80)? "TRUE":"FALSE",
	1037	+(% style="color:#4472c4" %)** 0xAD 00** (%%) **~-~->** Same as AT+DATAUP=0
590	590
591		- ~/~/payload of version
	1039	+(% style="color:#4472c4" %)** 0xAD 01**  (%%) **~-~->** Same as AT+DATAUP=1  ~/~/Each uplink is sent to the server one after the other as it is segmented.
592	592
593		- Pay_ver:bytes[2],
594	594
595		- };
	1042	+* (((
	1043	+(% style="color:#037691" %)** AT Command:**
	1044	+)))
596	596
597		- }
	1046	+(% style="color:#4472c4" %)** AT+DATAUP=1,Timeout**
598	598
599	599
	1049	+* (((
	1050	+(% style="color:#037691" %)** Downlink Payload:**
	1051	+)))
600	600
	1053	+(% style="color:#4472c4" %)** 0xAD 01 00 00 14** (%%) **~-~->** Same as AT+DATAUP=1，20000  ~/~/  (00 00 14 is 20 seconds)
601	601
	1055	+Each uplink is sent to the server at 20-second intervals when segmented.
602	602
603	603
604	604
605		-TTN V3 uplink screen shot.
606	606
607		-[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image023.png]]
	1060	+==== (% style="color:blue" %)**Manually trigger an Uplink**(%%) ====
608	608
609		-1.
610		-11. Configure RS485-BL via AT or Downlink
611	611
612		-User can configure RS485-BL via [[AT Commands >>path:#_​Using_the_AT]]or LoRaWAN Downlink Commands
	1063	+(((
	1064	+Ask device to send an uplink immediately.
	1065	+)))
613	613
614		-There are two kinds of Commands:
	1067	+* (((
	1068	+(% style="color:#037691" %)** AT Command:**
	1069	+)))
615	615
616		-* **Common Commands**: They should be available for each sensor, such as: change uplink interval, reset device. For firmware v1.3, user can find what common commands it supports: http:~/~/wiki.dragino.com/index.php?title=End_Device_AT_Commands_and_Downlink_Commands
	1071	+(((
	1072	+No AT Command for this, user can press the [[ACT button>>||anchor="H3.7Buttons"]] for 1 second for the same.
	1073	+)))
617	617
618		-* **Sensor Related Commands**: These commands are special designed for RS485-BL.  User can see these commands below:
	1075	+(((
	1076	+
	1077	+)))
619	619
620		-1.
621		-11.
622		-111. Common Commands:
	1079	+* (((
	1080	+(% style="color:#037691" %)** Downlink Payload:**
	1081	+)))
623	623
624		-They should be available for each of Dragino Sensors, such as: change uplink interval, reset device. For firmware v1.3, user can find what common commands it supports: [[http:~~/~~/wiki.dragino.com/index.php?title=End_Device_AT_Commands_and_Downlink_Commands>>url:http://wiki.dragino.com/index.php?title=End_Device_AT_Commands_and_Downlink_Commands]]
	1083	+(((
	1084	+(% style="color:#4472c4" %)** 0x08 FF**(%%), RS485-LN will immediately send an uplink.
	1085	+)))
625	625
626	626
627		-1.
628		-11.
629		-111. Sensor related commands:
630	630
631		-==== Choose Device Type (RS485 or TTL) ====
632	632
633		-RS485-BL can connect to either RS485 sensors or TTL sensor. User need to specify what type of sensor need to connect.
	1090	+==== (% style="color:blue" %)**Clear RS485 Command**(%%) ====
634	634
635		-* AT Command
636	636
637		-**AT+MOD=1** ~/~/ Set to support RS485-MODBUS type sensors. User can connect multiply RS485 , Modbus sensors to the A / B pins.
	1093	+(((
	1094	+The AT+COMMANDx and AT+DATACUTx settings are stored in special location, user can use below command to clear them.
638	638
639		-**AT+MOD=2** ~/~/ Set to support TTL Level sensors, User can connect one TTL Sensor to the TXD/RXD/GND pins.
	1096	+
	1097	+)))
640	640
	1099	+* (((
	1100	+(% style="color:#037691" %)** AT Command:**
	1101	+)))
641	641
642		-* Downlink Payload
	1103	+(((
	1104	+(% style="color:#4472c4" %)** AT+CMDEAR=mm,nn** (%%) mm: start position of erase ,nn: stop position of erase
	1105	+)))
643	643
644		-**0A aa**     à same as AT+MOD=aa
	1107	+(((
	1108	+
645	645
	1110	+Etc. AT+CMDEAR=1,10 means erase AT+COMMAND1/AT+DATACUT1 to AT+COMMAND10/AT+DATACUT10
	1111	+)))
646	646
	1113	+(((
	1114	+Example screen shot after clear all RS485 commands.
	1115	+)))
647	647
648		-==== [[RS485 Debug Command>>path:#downlink_A8]] (AT+CFGDEV) ====
	1117	+(((
	1118	+
	1119	+)))
649	649
650		-This command is used to configure the RS485 or TTL sensors; they won’t be used during sampling.
	1121	+(((
	1122	+The uplink screen shot is:
	1123	+)))
651	651
652		-* AT Command
	1125	+(% aria-label="1654160691922-496.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1654160691922-496.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
653	653
654		-AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
655	655
656		-m: 0: no CRC; 1: add CRC-16/MODBUS in the end of this command.
	1128	+* (((
	1129	+(% style="color:#037691" %)** Downlink Payload:**
	1130	+)))
657	657
	1132	+(((
	1133	+(% style="color:#4472c4" %)** 0x09 aa bb** (%%) same as AT+CMDEAR=aa,bb
	1134	+)))
658	658
659	659
660		-* Downlink Payload
661	661
662		-Format: A8 MM NN XX XX XX XX YY
663	663
664		-Where:
	1139	+==== (% style="color:blue" %)**Set Serial Communication Parameters**(%%) ====
665	665
666		-* MM: 1: add CRC-16/MODBUS ; 0: no CRC
667		-* NN: The length of RS485 command
668		-* XX XX XX XX: RS485 command total NN bytes
669		-* YY: How many bytes will be uplink from the return of this RS485 command, if YY=0, RS485-BL will execute the downlink command without uplink; if YY>0, RS485-BL will uplink total YY bytes from the output of this RS485 command
670	670
671		-**Example 1:**
	1142	+(((
	1143	+Set the Rs485 serial communication parameters:
672	672
673		-To connect a Modbus Alarm with below commands.
	1145	+
	1146	+)))
674	674
675		-* The command to active alarm is: 0A 05 00 04 00 01 4C B0. Where 0A 05 00 04 00 01 is the Modbus command to read the register 00 40 where stored the DI status. The 4C B0 is the CRC-16/MODBUS which calculate manually.
	1148	+* (((
	1149	+(% style="color:#037691" %)** AT Command:**
676	676
677		-* The command to deactivate alarm is: 0A 05 00 04 00 00 8D 70. Where 0A 05 00 04 00 00 is the Modbus command to read the register 00 40 where stored the DI status. The 8D 70 is the CRC-16/MODBUS which calculate manually.
678	678
679		-So if user want to use downlink command to control to RS485 Alarm, he can use:
	1152	+
	1153	+)))
680	680
681		-**A8 01 06 0A 05 00 04 00 01 00**: to activate the RS485 Alarm
	1155	+(((
	1156	+* Set Baud Rate
	1157	+)))
682	682
683		-**A8 01 06 0A 05 00 04 00 00 00**: to deactivate the RS485 Alarm
	1159	+(% style="color:#4472c4" %)** AT+BAUDR=9600** (%%) ~/~/  Options: (200~~115200)  When using low baud rate or receiving multiple bytes, you need to use AT+CMDDL to increase the receive timeout (the default receive timeout is 400ms), otherwise data will be lost
684	684
685		-A8 is type code and 01 means add CRC-16/MODBUS at the end, the 3^^rd^^ byte is 06, means the next 6 bytes are the command to be sent to the RS485 network, the final byte 00 means this command don’t need to acquire output.
686	686
	1162	+(((
	1163	+* Set UART Parity
	1164	+)))
687	687
688		-**Example 2:**
	1166	+(% style="color:#4472c4" %)** AT+PARITY=0** (%%) ~/~/  Option: 0: no parity, 1: odd parity, 2: even parity
689	689
690		-Check TTL Sensor return:
691	691
692		-[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image024.png]]
	1169	+(((
	1170	+* Set STOPBIT
	1171	+)))
693	693
	1173	+(% style="color:#4472c4" %)** AT+STOPBIT=0** (%%) ~/~/  Option: 0 for 1bit; 1 for 1.5 bit ; 2 for 2 bits
694	694
695	695
696	696
697		-==== Set Payload version ====
	1177	+* (((
	1178	+(% style="color:#037691" %)** Downlink Payload:**
	1179	+)))
698	698
699		-This is the first byte of the uplink payload. RS485-BL can connect to different sensors. User can set the PAYVER field to tell server how to decode the current payload.
	1181	+(((
	1182	+(% style="color:#4472c4" %)** A7 01 aa bb**:   (%%) Same  AT+BAUDR=hex(aa bb)*100
	1183	+)))
700	700
701		-* AT Command:
	1185	+(((
	1186	+
702	702
703		-AT+PAYVER: Set PAYVER field = 1
	1188	+**Example:**
	1189	+)))
704	704
	1191	+* (((
	1192	+A7 01 00 60  same as AT+BAUDR=9600
	1193	+)))
	1194	+* (((
	1195	+A7 01 04 80  same as AT+BAUDR=115200
	1196	+)))
705	705
706		-* Downlink Payload:
	1198	+(((
	1199	+* A7 02 aa:  Same as  AT+PARITY=aa  (aa value: 00 , 01 or 02)
	1200	+)))
707	707
708		-0xAE 01   à Set PAYVER field =  0x01
	1202	+(((
	1203	+* A7 03 aa:  Same as  AT+STOPBIT=aa  (aa value: 00 , 01 or 02)
	1204	+)))
709	709
710		-0xAE 0F   à Set PAYVER field =  0x0F
711	711
712	712
713		-==== Set RS485 Sampling Commands ====
714	714
715		-AT+COMMANDx, AT+DATACUTx and AT+SEARCHx
716	716
717		-These three commands are used to configure how the RS485-BL polling data from Modbus device. Detail of usage please see : [[polling RS485 device>>path:#polling_485]].
	1210	+==== (% style="color:blue" %)**Encrypted payload**(%%) ====
718	718
	1212	+(((
	1213	+
	1214	+)))
719	719
720		-* AT Command:
	1216	+* (((
	1217	+(% style="color:#037691" %)** AT Command:**
	1218	+)))
721	721
722		-AT+COMMANDx: Configure RS485 read command to sensor.
	1220	+(% style="color:#4472c4" %)** AT+DECRYPT=1  ** (%%) ~/~/ The payload is uploaded without encryption
723	723
724		-AT+DATACUTx: Configure how to handle return from RS485 devices.
	1222	+(% style="color:#4472c4" %)** AT+DECRYPT=0  ** (%%) ~/~/ Encrypt when uploading payload (default)
725	725
726		-AT+SEARCHx: Configure search command
727	727
728	728
729		-* Downlink Payload:
730	730
731		-0xAF downlink command can be used to set AT+COMMANDx or AT+DATACUTx.
	1227	+==== (% style="color:blue" %)**Get sensor value**(%%) ====
732	732
733		-Note: if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.
734	734
735		-Format: AF MM NN LL XX XX XX XX YY
	1230	+* (((
	1231	+(% style="color:#037691" %)** AT Command:**
	1232	+)))
736	736
737		-Where:
	1234	+(% style="color:#4472c4" %)** AT+GETSENSORVALUE=0  **(%%) ~/~/ The serial port gets the reading of the current sensor
738	738
739		-* MM: the ATCOMMAND or AT+DATACUT to be set. Value from 01 ~~ 0F,
740		-* NN: 0: no CRC; 1: add CRC-16/MODBUS ; 2: set the AT+DATACUT value.
741		-* LL: The length of AT+COMMAND or AT+DATACUT command
742		-* XX XX XX XX: AT+COMMAND or AT+DATACUT command
743		-* YY: If YY=0, RS485-BL will execute the downlink command without uplink; if YY=1, RS485-BL will execute an uplink after got this command.
	1236	+(% style="color:#4472c4" %)** AT+GETSENSORVALUE=1  **(%%) ~/~/ The serial port gets the current sensor reading and uploads it.
744	744
745		-Example:
746	746
747		-**AF 03 01 06 0A 05 00 04 00 01 00**: Same as AT+COMMAND3=0A 05 00 04 00 01,1
748	748
749		-**AF 03 02 06 10 01 05 06 09 0A 00**: Same as AT+DATACUT3=**16**,**1**,**5+6+9+10**
750	750
751		-**AF 03 02 06 0B 02 05 07 08 0A 00**: Same as AT+DATACUT3=**11**,**2**,**5~~7+8~~10**
	1241	+==== (% style="color:blue" %)**Resets the downlink packet count**(%%) ====
752	752
753	753
754		-0xAB downlink command can be used for set AT+SEARCHx
	1244	+* (((
	1245	+(% style="color:#037691" %)** AT Command:**
	1246	+)))
755	755
756		-Example: **AB aa 01 03 xx xx xx** (03 here means there are total 3 bytes after 03) So
	1248	+(% style="color:#4472c4" %)** AT+DISFCNTCHECK=0  **(%%) ~/~/  When the downlink packet count sent by the server is less than the node downlink packet count or exceeds 16384, the node will no longer receive downlink packets (default)
757	757
758		-* AB aa 01 03 xx xx xx  same as AT+SEARCHaa=1,xx xx xx
759		-* AB aa 02 03 xx xx xx 02 yy yy(03 means there are 3 bytes after 03, they are xx xx xx;02 means there are 2 bytes after 02, they are yy yy) so the commands
	1250	+(% style="color:#4472c4" %)** AT+DISFCNTCHECK=1  **(%%) ~/~/  When the downlink packet count sent by the server is less than the node downlink packet count or exceeds 16384, the node resets the downlink packet count and keeps it consistent with the server downlink packet count.
760	760
761		-**AB aa 02 03 xx xx xx 02 yy yy**  same as **AT+SEARCHaa=2,xx xx xx+yy yy**
762	762
763	763
764		-==== Fast command to handle MODBUS device ====
765	765
766		-AT+MBFUN is valid since v1.3 firmware version. The command is for fast configure to read Modbus devices. It is only valid for the devices which follow the [[MODBUS-RTU protocol>>url:https://www.modbustools.com/modbus.html]].
	1255	+==== (% style="color:blue" %)**When the limit bytes are exceeded, upload in batches**(%%) ====
767	767
768		-This command is valid since v1.3 firmware version
769	769
	1258	+* (((
	1259	+(% style="color:#037691" %)** AT Command:**
	1260	+)))
770	770
771		-AT+MBFUN has only two value:
	1262	+ (% style="color:#4472c4" %)** AT+DISMACANS=0**  (%%) ~/~/  When the MACANS of the reply server plus the payload exceeds the maximum number of bytes of 11 bytes (DR0 of US915, DR2 of AS923, DR2 of AU195), the node will send a packet with a payload of 00 and a port of 4. (default)
772	772
773		-* AT+MBFUN=1: Enable Modbus reading. And get response base on the MODBUS return
	1264	+ (% style="color:#4472c4" %)** AT+DISMACANS=1**   (%%) ~/~/  When the MACANS of the reply server plus the payload exceeds the maximum number of bytes of the DR, the node will ignore the MACANS and not reply, and only upload the payload part.
774	774
775		-AT+MBFUN=1, device can auto read the Modbus function code: 01, 02, 03 or 04. AT+MBFUN has lower priority vs AT+DATACUT command. If AT+DATACUT command is configured, AT+MBFUN will be ignore.
776	776
777		-* AT+MBFUN=0: Disable Modbus fast reading.
	1267	+* (((
	1268	+(% style="color:#037691" %)** Downlink Payload:**
	1269	+)))
778	778
779		-Example:
	1271	+(% style="color:#4472c4" %)** 0x21 00 01 ** (%%) ~/~/ Set  the DISMACANS=1
780	780
781		-* AT+MBFUN=1 and AT+DATACUT1/AT+DATACUT2 are not configure (0,0,0).
782		-* AT+COMMAND1= 01 03 00 10 00 08,1 ~-~-> read slave address 01 , function code 03, start address 00 01, quantity of registers 00 08.
783		-* AT+COMMAND2= 01 02 00 40 00 10,1 ~-~-> read slave address 01 , function code 02, start address 00 40, quantity of inputs 00 10.
784	784
785		-[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image025.png]]
786	786
787	787
788		-[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image026.png]]
	1276	+==== (% style="color:blue" %)** Copy downlink to uplink **(%%) ====
789	789
790	790
791		-* Downlink Commands:
	1279	+* (((
	1280	+(% style="color:#037691" %)** AT Command:**
	1281	+)))
792	792
793		-A9 aa -à Same as AT+MBFUN=aa
	1283	+(% style="color:#4472c4" %)** AT+RPL=5**  (%%) ~/~/ After receiving the package from the server, it will immediately upload the content of the package to the server, the port number is 100.
794	794
795	795
796		-==== RS485 command timeout ====
	1286	+Example：**aa xx xx xx xx**         ~/~/ aa indicates whether the configuration has changed, 00 is yes, 01 is no; xx xx xx xx are the bytes sent.
797	797
798		-Some Modbus device has slow action to send replies. This command is used to configure the RS485-BL to use longer time to wait for their action.
799	799
800		-Default value: 0, range:  0 ~~ 5 seconds
	1289	+[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220823173747-6.png?width=1124&height=165&rev=1.1||alt="image-20220823173747-6.png"]]
801	801
802	802
803		-* AT Command:
804	804
805		-AT+CMDDLaa=hex(bb cc)
	1293	+For example, sending 11 22 33 44 55 66 77 will return invalid configuration 00 11 22 33 44 55 66 77.
806	806
807		-Example:
808	808
809		-**AT+CMDDL1=1000** to send the open time to 1000ms
	1296	+[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220823173833-7.png?width=1124&height=149&rev=1.1||alt="image-20220823173833-7.png"]]
810	810
811	811
812		-* Downlink Payload:
	1299	+For example, if 01 00 02 58 is issued, a valid configuration of 01 01 00 02 58 will be returned.
813	813
814		-0x AA aa bb cc
815	815
816		-Same as: AT+CMDDLaa=hex(bb cc)
817	817
818		- Example:
819	819
820		- 0xAA 01 03 E8  à Same as **AT+CMDDL1=1000 ms**
	1304	+==== (% style="color:blue" %)**Query version number and frequency band 、TDC**(%%) ====
821	821
822	822
823		-==== [[Uplink>>path:#downlink_A8]] payload mode ====
	1307	+(((
	1308	+* (% style="color:#037691" %)**Downlink Payload:**
824	824
825		-Define to use one uplink or multiple uplinks for the sampling.
	1310	+(% style="color:#4472c4" %)** 26 01  ** (%%) ~/~/  Downlink 26 01 can query device upload frequency, frequency band, software version number, TDC time.
	1311	+)))
826	826
827		-The use of this command please see: [[Compose Uplink payload>>path:#DataUP]]
828	828
829		-* AT Command:
	1314	+Example：
830	830
831		-AT+DATAUP=0
832	832
833		-AT+DATAUP=1
	1317	+[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220823173929-8.png?width=1205&height=76&rev=1.1||alt="image-20220823173929-8.png"]]
834	834
835	835
836		-* Downlink Payload:
837	837
838		-0xAD 00   à Same as AT+DATAUP=0
839	839
840		-0xAD 01   à Same as AT+DATAUP=1
	1322	+==== (% style="color:blue" %)** Monitor RS485 communication of other devices**(%%) ====
841	841
842	842
843		-==== Manually trigger an Uplink ====
	1325	+* (((
	1326	+(% style="color:#037691" %)** AT Command:**
	1327	+)))
844	844
845		-Ask device to send an uplink immediately.
	1329	+(% style="color:#4472c4" %)**AT+RXMODE=1,10**    (%%) ~/~/ When the RS485-LN receives more than 10 bytes from the RS485, it immediately sends the uplink of the received data.
846	846
847		-* Downlink Payload:
	1331	+(% style="color:#4472c4" %)**AT+RXMODE=2,500    ** (%%) ~/~/  RS485-LN uploads data as uplink from the first byte received by RS485 to the data received within 500ms after that.
848	848
849		-0x08 FF, RS485-BL will immediately send an uplink.
	1333	+(% style="color:#4472c4" %)**AT+RXMODE=0,0  ** (%%) ~/~/  Disable this mode (default)
850	850
851	851
852		-==== Clear RS485 Command ====
	1336	+* (((
	1337	+(% style="color:#037691" %)**Downlink Payload:**
	1338	+)))
853	853
854		-The AT+COMMANDx and AT+DATACUTx settings are stored in special location, user can use below command to clear them.
	1340	+(% style="color:#4472c4" %)** A6 aa bb bb               ** (%%) ~/~/same as AT+RXMODE=aa,bb
855	855
	1342	+[[image:image-20220824144240-1.png]]
856	856
857		-* AT Command:
858	858
859		-**AT+CMDEAR=mm,nn**   mm: start position of erase ,nn: stop position of erase
860	860
861		-Etc. AT+CMDEAR=1,10 means erase AT+COMMAND1/AT+DATACUT1 to AT+COMMAND10/AT+DATACUT10
	1346	+== 3.6 Listening mode for RS485 network ==
862	862
863		-Example screen shot after clear all RS485 commands.
864	864
	1349	+(((
	1350	+This feature support since firmware v1.4
	1351	+)))
865	865
	1353	+(((
	1354	+RS485-LN supports listening mode, it can listen the RS485 network packets and send them via LoRaWAN uplink. Below is the structure. The blue arrow shows the RS485 network packets to RS485-LN.
866	866
867		-The uplink screen shot is:
	1356	+
	1357	+)))
868	868
869		-[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image023.png]]
	1359	+(% aria-label="image-20220602171200-8.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602171200-8.png||data-widget="image" height="567" width="1007"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]]
870	870
	1361	+(% title="Click and drag to resize" %)​
871	871
872		-* Downlink Payload:
	1363	+(((
	1364	+To enable the listening mode, use can run the command (% style="color:#4472c4" %)** AT+RXMODE**.
	1365	+)))
873	873
874		-0x09 aa bb same as AT+CMDEAR=aa,bb
	1367	+(((
	1368	+
	1369	+)))
875	875
	1371	+(% border="1" cellspacing="10" style="background-color:#ffffcc; width:500px" %)
	1372	+|=(% style="width: 100px;" %)(((
	1373	+**Command example**
	1374	+)))|=(% style="width: 400px;" %)(((
	1375	+**Function**
	1376	+)))
	1377	+|(% style="width:100px" %)(((
	1378	+AT+RXMODE=1,10
	1379	+)))|(% style="width:400px" %)(((
	1380	+Enable listening mode 1, if RS485-LN has received more than 10 RS485 commands from the network. RS485-LN will send these commands via LoRaWAN uplinks.
	1381	+)))
	1382	+|(% style="width:100px" %)(((
	1383	+AT+RXMODE=2,500
	1384	+)))|(% style="width:400px" %)(((
	1385	+Enable listening mode 2, RS485-LN will capture and send a 500ms content once from the first detect of character. Max value is 65535 ms
	1386	+)))
	1387	+|(% style="width:100px" %)(((
	1388	+AT+RXMODE=0,0
	1389	+)))|(% style="width:400px" %)(((
	1390	+Disable listening mode. This is the default settings.
	1391	+)))
	1392	+|(% style="width:100px" %)(((
	1393	+
	1394	+)))|(% style="width:400px" %)(((
	1395	+A6 aa bb cc  same as AT+RXMODE=aa,(bb<<8 | cc)
	1396	+)))
876	876
877		-==== Set Serial Communication Parameters ====
	1398	+(((
	1399	+
878	878
879		-Set the Rs485 serial communication parameters:
	1401	+(% style="color:#037691" %)**Downlink Command:**
	1402	+)))
880	880
881		-* AT Command:
	1404	+(((
	1405	+(% style="color:#4472c4" %)** 0xA6 aa bb cc **(%%) same as AT+RXMODE=aa,(bb<<8 | cc)
	1406	+)))
882	882
883		-Set Baud Rate:
	1408	+(((
	1409	+
	1410	+)))
884	884
885		-AT+BAUDR=9600    ~/~/ Options: (1200,2400,4800,14400,19200,115200)
	1412	+(((
	1413	+**Example**:
	1414	+)))
886	886
	1416	+(((
	1417	+The RS485-LN is set to AT+RXMODE=2,1000
	1418	+)))
887	887
888		-Set UART parity
	1420	+(((
	1421	+There is a two Modbus commands in the RS485 network as below:
	1422	+)))
889	889
890		-AT+PARITY=0    ~/~/ Option: 0: no parity, 1: odd parity, 2: even parity
	1424	+(((
	1425	+The Modbus master send a command: (% style="background-color:#ffc000" %)01 03 00 00 00 02 c4 0b
	1426	+)))
891	891
	1428	+(((
	1429	+And Modbus slave reply with: (% style="background-color:green" %)01 03 04 00 00 00 00 fa 33
	1430	+)))
892	892
893		-Set STOPBIT
	1432	+(((
	1433	+RS485-LN will capture both and send the uplink: (% style="background-color:#ffc000" %)01 03 00 00 00 02 c4 0b  (% style="background-color:green" %)01 03 04 00 00 00 00 fa 33
	1434	+)))
894	894
895		-AT+STOPBIT=0    ~/~/ Option: 0 for 1bit; 1 for 1.5 bit ; 2 for 2 bits
	1436	+(((
	1437	+(% aria-label="image-20220602171200-9.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602171200-9.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
	1438	+)))
896	896
	1440	+(((
	1441	+
	1442	+)))
897	897
898		-* Downlink Payload:
	1444	+(((
	1445	+(((
	1446	+(% style="color:red" %)**Notice: Listening mode can work with the default polling mode of RS485-LN. When RS485-LN is in to send the RS485 commands (from AT+COMMANDx), the listening mode will be interrupt for a while.**
	1447	+)))
	1448	+)))
899	899
900		-A7 01 aa bb: Same  AT+BAUDR=hex(aa bb)*100
901	901
902		-Example:
903	903
904		-* A7 01 00 60   same as AT+BAUDR=9600
905		-* A7 01 04 80  same as AT+BAUDR=115200
	1452	+== 3.7 Buttons ==
906	906
907		-A7 02 aa: Same as  AT+PARITY=aa  (aa value: 00 , 01 or 02)
908	908
909		-A7 03 aa: Same as  AT+STOPBIT=aa  (aa value: 00 , 01 or 02)
	1455	+(% border="1" cellspacing="10" style="background-color:#f7faff; width:430px" %)
	1456	+|=(% style="width: 50px;" %)**Button**|=(% style="width: 361px;" %)**Feature**
	1457	+|(% style="width:50px" %)**ACT**|(% style="width:361px" %)If RS485 joined in network, press this button for more than 1 second, RS485 will upload a packet, and the SYS LED will give a (% style="color:blue" %)**Blue blink**
	1458	+|(% style="width:50px" %)**RST**|(% style="width:361px" %)Reboot RS485
	1459	+|(% style="width:50px" %)**PRO**|(% style="width:361px" %)Use for upload image, see [[How to Update Image>>||anchor="H6.1Howtoupgradetheimage3F"]]
910	910
911	911
912		-==== Control output power duration ====
913	913
914		-User can set the output power duration before each sampling.
	1463	+== 3.8 LEDs ==
915	915
916		-* AT Command:
917	917
918		-Example:
	1466	+(% border="1" cellspacing="10" style="background-color:#f7faff; width:430px" %)
	1467	+|=(% style="width: 50px;" %)**LEDs**|=(% style="width: 380px;" %)**Feature**
	1468	+|**PWR**|Always on if there is power
	1469	+|**SYS**|After device is powered on, the SYS will (% style="color:green" %)**fast blink in GREEN**(%%) for 5 times, means RS485-LN start to join LoRaWAN network. If join success, SYS will be (% style="color:green" %)**on GREEN for 5 seconds** (%%)**. **SYS will (% style="color:green" %)**blink Blue**(%%) on every upload and (% style="color:green" %)**blink Green**(%%) once receive a downlink message.
919	919
920		-AT+3V3T=1000 ~/~/ 3V3 output power will open 1s before each sampling.
921	921
922		-AT+5VT=1000 ~/~/ +5V output power will open 1s before each sampling.
923	923
	1473	+= 4. Case Study =
924	924
925		-* LoRaWAN Downlink Command:
926	926
927		-07 01 aa bb  Same as AT+5VT=(aa bb)
	1476	+User can check this URL for some case studies: [[APP RS485 COMMUNICATE WITH SENSORS>>doc:Main.Application Note \: Communicate with Different Sensors ----- RS485-LN RS485-BL.WebHome]]
928	928
929		-07 02 aa bb  Same as AT+3V3T=(aa bb)
930	930
931	931
	1480	+= 5. Use AT Command =
932	932
933	933
934		-1.
935		-11. Buttons
	1483	+== 5.1 Access AT Command ==
936	936
937		-|**Button**|**Feature**
938		-|**RST**|Reboot RS485-BL
939	939
940		-1.
941		-11. +3V3 Output
	1486	+(((
	1487	+RS485-LN supports AT Command set. User can use a USB to TTL adapter plus the 3.5mm Program Cable to connect to RS485-LN to use AT command, as below.
942	942
943		-RS485-BL has a Controllable +3V3 output, user can use this output to power external sensor.
	1489	+
	1490	+)))
944	944
945		-The +3V3 output will be valid for every sampling. RS485-BL will enable +3V3 output before all sampling and disable the +3V3 after all sampling.
	1492	+(% aria-label="1654162355560-817.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1654162355560-817.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
946	946
947	947
948		-The +3V3 output time can be controlled by AT Command.
949	949
950		-**AT+3V3T=1000**
	1496	+(((
	1497	+In PC, User needs to set (% style="color:blue" %)**serial tool**(%%)(such as [[putty>>url:https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]], SecureCRT) baud rate to (% style="color:green" %)**9600**(%%) to access to access serial console of RS485-LN. The default password is 123456. Below is the output for reference:
951	951
952		-Means set +3v3 valid time to have 1000ms. So, the real +3v3 output will actually have 1000ms + sampling time for other sensors.
	1499	+
	1500	+)))
953	953
	1502	+(% aria-label="1654162368066-342.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1654162368066-342.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
954	954
955		-By default, the AT+3V3T=0. This is a special case, means the +3V3 output is always on at any time
956	956
	1505	+(((
	1506	+More detail AT Command manual can be found at [[AT Command Manual>>https://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/]]
	1507	+)))
957	957
958		-1.
959		-11. +5V Output
960	960
961		-RS485-BL has a Controllable +5V output, user can use this output to power external sensor.
962	962
963		-The +5V output will be valid for every sampling. RS485-BL will enable +5V output before all sampling and disable the +5v after all sampling.
	1511	+== 5.2 Common AT Command Sequence ==
964	964
965	965
966		-The 5V output time can be controlled by AT Command.
	1514	+=== 5.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
967	967
968		-**AT+5VT=1000**
969	969
970		-Means set 5V valid time to have 1000ms. So, the real 5V output will actually have 1000ms + sampling time for other sensors.
	1517	+If device has not joined network yet:
971	971
	1519	+* (% style="color:#037691" %)**AT+FDR**
	1520	+* (% style="color:#037691" %)**AT+NJM=0**
	1521	+* (% style="color:#037691" %)**ATZ**
972	972
973		-By default, the AT+5VT=0. If the external sensor which require 5v and require more time to get stable state, user can use this command to increase the power ON duration for this sensor.
	1523	+(((
	1524	+
974	974
	1526	+If device already joined network:
975	975
	1528	+* (% style="color:#037691" %)**AT+NJM=0**
	1529	+* (% style="color:#037691" %)**ATZ**
976	976
	1531	+
	1532	+)))
977	977
978		-1.
979		-11. LEDs
980	980
981		-|**LEDs**|**Feature**
982		-|**LED1**|Blink when device transmit a packet.
983	983
984		-1.
985		-11. Switch Jumper
	1536	+=== 5.5.2 Single-channel ABP mode (Use with LG01/LG02) ===
986	986
987		-|**Switch Jumper**|**Feature**
988		-|**SW1**|(((
989		-ISP position: Upgrade firmware via UART
990	990
991		-Flash position: Configure device, check running status.
992		-)))
993		-|**SW2**|(((
994		-5V position: set to compatible with 5v I/O.
	1539	+(% style="background-color:#dcdcdc" %)**AT+FDR** (%%) Reset Parameters to Factory Default, Keys Reserve
995	995
996		-3.3v position: set to compatible with 3.3v I/O.,
997		-)))
	1541	+(% style="background-color:#dcdcdc" %)**AT+NJM=0 **(%%) Set to ABP mode
998	998
999		-+3.3V: is always ON
	1543	+(% style="background-color:#dcdcdc" %)**AT+ADR=0** (%%) Set the Adaptive Data Rate Off
1000	1000
1001		-+5V: Only open before every sampling. The time is by default, it is AT+5VT=0.  Max open time. 5000 ms.
	1545	+(% style="background-color:#dcdcdc" %)**AT+DR=5**   (%%) Set Data Rate
1002	1002
1003		-1. Case Study
	1547	+(% style="background-color:#dcdcdc" %)**AT+TDC=60000** (%%) Set transmit interval to 60 seconds
1004	1004
1005		-User can check this URL for some case studies.
	1549	+(% style="background-color:#dcdcdc" %)**AT+CHS=868400000**(%%)  Set transmit frequency to 868.4Mhz
1006	1006
1007		-[[http:~~/~~/wiki.dragino.com/index.php?title=APP_RS485_COMMUNICATE_WITH_SENSORS>>url:http://wiki.dragino.com/index.php?title=APP_RS485_COMMUNICATE_WITH_SENSORS]]
	1551	+(% style="background-color:#dcdcdc" %)**AT+RX2FQ=868400000** (%%) Set RX2Frequency to 868.4Mhz (according to the result from server)
1008	1008
	1553	+(% style="background-color:#dcdcdc" %)**AT+RX2DR=5**  (%%) Set RX2DR to match the downlink DR from server. see below
1009	1009
	1555	+(% style="background-color:#dcdcdc" %)**AT+DADDR=26** (%%) 01 1A F1 Set Device Address to 26 01 1A F1, this ID can be found in the LoRa Server portal.
1010	1010
	1557	+(% style="background-color:#dcdcdc" %)**ATZ**       (%%) Reset MCU
1011	1011
1012		-1. Use AT Command
1013		-11. Access AT Command
1014	1014
1015		-RS485-BL supports AT Command set. User can use a USB to TTL adapter plus the 3.5mm Program Cable to connect to RS485-BL to use AT command, as below.
	1560	+(% style="color:red" %)**Note:**
1016	1016
1017		-[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image027.png]]
	1562	+(((
	1563	+(% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server.
	1564	+2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
	1565	+3. Make sure SF / bandwidth setting in LG01/LG02 match the settings of AT+DR. refer [[this link>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_Gateway/&file=LoRaWAN%201.0.3%20Regional%20Parameters.xlsx]] to see what DR means.
	1566	+4. The command AT+RX2FQ and AT+RX2DR is to let downlink work. to set the correct parameters, user can check the actually downlink parameters to be used. As below. Which shows the RX2FQ should use 868400000 and RX2DR should be 5
1018	1018
	1568	+
	1569	+)))
1019	1019
1020		-In PC, User needs to set **serial tool**(such as [[putty>>url:https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]], SecureCRT) baud rate to **9600** to access to access serial console of RS485-BL. The default password is 123456. Below is the output for reference:
	1571	+(% aria-label="1654162478620-421.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1654162478620-421.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
1021	1021
1022		-[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image028.png]]
1023	1023
1024	1024
	1575	+= 6. FAQ =
1025	1025
1026		-More detail AT Command manual can be found at [[AT Command Manual>>path:#AT_COMMAND]]
1027	1027
	1578	+== 6.1 How to upgrade the image? ==
1028	1028
1029	1029
1030		-1.
1031		-11. Common AT Command Sequence
1032		-111. Multi-channel ABP mode (Use with SX1301/LG308)
	1581	+(((
	1582	+The RS485-LN LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to RS485-LN to:
	1583	+)))
1033	1033
1034		-If device has not joined network yet:
	1585	+* (((
	1586	+Support new features
	1587	+)))
	1588	+* (((
	1589	+For bug fix
	1590	+)))
	1591	+* (((
	1592	+Change LoRaWAN bands.
	1593	+)))
1035	1035
1036		-AT+FDR
	1595	+(((
	1596	+Below shows the hardware connection for how to upload an image to RS485-LN:
	1597	+)))
1037	1037
1038		-AT+NJM=0
	1599	+(% aria-label="1654162535040-878.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1654162535040-878.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]]
1039	1039
1040		-ATZ
	1601	+(% title="Click and drag to resize" %)​
1041	1041
	1603	+(((
	1604	+(% style="color:blue" %)**Step1**(%%)**:** Download [[flash loader>>url:https://www.st.com/content/st_com/en/products/development-tools/software-development-tools/stm32-software-development-tools/stm32-programmers/flasher-stm32.html]].
1042	1042
1043		-If device already joined network:
	1606	+
	1607	+)))
1044	1044
1045		-AT+NJM=0
	1609	+(((
	1610	+(% style="color:blue" %)**Step2**(%%)**:** Download the [[LT Image files>>url:https://www.dropbox.com/sh/g99v0fxcltn9r1y/AACP33wo_ZQLsxW2MJ70oUoba/RS485-LN/Firmware?dl=0&subfolder_nav_tracking=1]].
1046	1046
1047		-ATZ
	1612	+
	1613	+)))
1048	1048
1049		-1.
1050		-11.
1051		-111. Single-channel ABP mode (Use with LG01/LG02)
	1615	+(((
	1616	+(% style="color:blue" %)**Step3**(%%)**: **Open flashloader; choose the correct COM port to update.
1052	1052
1053		-AT+FDR   Reset Parameters to Factory Default, Keys Reserve
	1618	+
	1619	+)))
1054	1054
1055		-AT+NJM=0 Set to ABP mode
	1621	+(((
	1622	+(((
	1623	+(((
	1624	+(% style="color:blue" %) Hold down the PRO button and then momentarily press the RST reset button and the SYS led will change from OFF to ON, While SYS LED is RED ON, it means the RS485-LN is ready to be program.
	1625	+)))
	1626	+)))
	1627	+)))
1056	1056
1057		-AT+ADR=0 Set the Adaptive Data Rate Off
1058	1058
1059		-AT+DR=5  Set Data Rate
	1630	+(% aria-label="image-20220602175818-12.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602175818-12.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
1060	1060
1061		-AT+TDC=60000  Set transmit interval to 60 seconds
1062	1062
1063		-AT+CHS=868400000 Set transmit frequency to 868.4Mhz
	1633	+(% aria-label="image-20220602175848-13.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602175848-13.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
1064	1064
1065		-AT+RX2FQ=868400000 Set RX2Frequency to 868.4Mhz (according to the result from server)
1066	1066
1067		-AT+RX2DR=5  Set RX2DR to match the downlink DR from server. see below
	1636	+(% aria-label="image-20220602175912-14.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602175912-14.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
1068	1068
1069		-AT+DADDR=26 01 1A F1 Set Device Address to 26 01 1A F1, this ID can be found in the LoRa Server portal.
1070	1070
1071		-ATZ          Reset MCU
	1639	+(% style="color:red" %)**Notice**: **In case user has lost the program cable. User can hand made one from a 3.5mm cable. The pin mapping is:**
1072	1072
1073		-**Note:**
	1641	+(% aria-label="image-20220602175638-10.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602175638-10.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
1074	1074
1075		-1. Make sure the device is set to ABP mode in the IoT Server.
1076		-1. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
1077		-1. Make sure SF / bandwidth setting in LG01/LG02 match the settings of AT+DR. refer [[this link>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_Gateway/&file=LoRaWAN%201.0.3%20Regional%20Parameters.xlsx]] to see what DR means.
1078		-1. The command AT+RX2FQ and AT+RX2DR is to let downlink work. to set the correct parameters, user can check the actually downlink parameters to be used. As below. Which shows the RX2FQ should use 868400000 and RX2DR should be 5
1079	1079
1080		-[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image029.png]]
1081	1081
	1645	+== 6.2 How to change the LoRa Frequency Bands/Region? ==
1082	1082
1083		-1. FAQ
1084		-11. How to upgrade the image?
1085	1085
1086		-The RS485-BL LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to RS485-BL to:
	1648	+User can follow the introduction for [[how to upgrade image>>||anchor="H6.1Howtoupgradetheimage3F"]]. When download the images, choose the required image file for download.
1087	1087
1088		-* Support new features
1089		-* For bug fix
1090		-* Change LoRaWAN bands.
1091	1091
1092		-Below shows the hardware connection for how to upload an image to RS485-BL:
1093	1093
1094		-[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image030.png]]
	1652	+== 6.3 How many RS485-Slave can RS485-LN connects? ==
1095	1095
1096		-**Step1:** Download [[flash loader>>url:https://www.st.com/content/st_com/en/products/development-tools/software-development-tools/stm32-software-development-tools/stm32-programmers/flasher-stm32.html]].
1097	1097
1098		-**Step2**: Download the [[LT Image files>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]].
	1655	+The RS485-LN can support max 32 RS485 devices. Each uplink command of RS485-LN can support max 16 different RS485 command. So RS485-LN can support max 16 RS485 devices pre-program in the device for uplink. For other devices no pre-program, user can use the [[downlink message (type code 0xA8) to poll their info>>||anchor="H3.3.3Configurereadcommandsforeachsampling"]].
1099	1099
1100		-**Step3: **Open flashloader; choose the correct COM port to update.
1101	1101
1102	1102
1103		-|(((
1104		-HOLD PRO then press the RST button, SYS will be ON, then click next
1105		-)))
	1659	+== 6.4 Compatible question to ChirpStack and TTI LoRaWAN server ? ==
1106	1106
1107		-|(((
1108		-Board detected
1109		-)))
1110	1110
1111		-|(((
1112		-
1113		-)))
	1662	+When user need to use with ChirpStack or TTI. Please set AT+RPL=4.
1114	1114
1115		-[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image031.png]] [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image032.png]]
	1664	+Detail info check this link: [[Set Packet Receiving Response Level>>doc:Main.End Device AT Commands and Downlink Command.WebHome||anchor="H7.23SetPacketReceivingResponseLevel"]]
1116	1116
1117	1117
1118	1118
1119		-[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image033.png]] [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image034.png]]
	1668	+== 6.5 Can i use point to point communication for RS485-LN? ==
1120	1120
1121	1121
1122		-[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image035.png]] [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image036.png]]
	1671	+Yes, please refer [[Point to Point Communication for RS485-LN>>Point to Point Communication for RS485-LN]].
1123	1123
1124	1124
1125		-1.
1126		-11. How to change the LoRa Frequency Bands/Region?
1127	1127
1128		-User can follow the introduction for [[how to upgrade image>>path:#upgrade_image]]. When download the images, choose the required image file for download.
	1675	+== 6.6 How to Use RS485-LN  to connect to RS232 devices? ==
1129	1129
1130	1130
	1678	+[[Use RS485-BL or RS485-LN to connect to RS232 devices. - DRAGINO>>url:http://8.211.40.43:8080/xwiki/bin/view/Main/RS485%20to%20RS232/]]
1131	1131
1132		-1.
1133		-11. How many RS485-Slave can RS485-BL connects?
1134	1134
1135		-The RS485-BL can support max 32 RS485 devices. Each uplink command of RS485-BL can support max 16 different RS485 command. So RS485-BL can support max 16 RS485 devices pre-program in the device for uplink. For other devices no pre-program, user can use the [[downlink message (type code 0xA8) to poll their info>>path:#downlink_A8]].
1136	1136
	1682	+= 7. Trouble Shooting =
1137	1137
1138	1138
	1685	+== 7.1 Downlink doesn't work, how to solve it? ==
1139	1139
1140		-1. Trouble Shooting
1141		-11. Downlink doesn’t work, how to solve it?
1142	1142
1143		-Please see this link for debug:
	1688	+Please see this link for debug: [[LoRaWAN Communication Debug>>doc:Main.LoRaWAN Communication Debug.WebHome]]
1144	1144
1145		-[[http:~~/~~/wiki.dragino.com/index.php?title=Main_Page#LoRaWAN_Communication_Debug>>url:http://wiki.dragino.com/index.php?title=Main_Page#LoRaWAN_Communication_Debug]]
1146	1146
1147	1147
	1692	+== 7.2 Why I can't join TTN V3 in US915 /AU915 bands? ==
1148	1148
1149		-1.
1150		-11. Why I can’t join TTN V3 in US915 /AU915 bands?
1151	1151
1152		-It might about the channels mapping. Please see for detail.
	1695	+It might about the channels mapping. Please see for detail: [[Notice of Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
1153	1153
1154		-[[http:~~/~~/wiki.dragino.com/index.php?title=LoRaWAN_Communication_Debug#Notice_of_US915.2FCN470.2FAU915_Frequency_band>>url:http://wiki.dragino.com/index.php?title=LoRaWAN_Communication_Debug#Notice_of_US915.2FCN470.2FAU915_Frequency_band]]
1155	1155
1156	1156
	1699	+= 8. Order Info =
1157	1157
1158		-1. Order Info
1159	1159
1160		-**Part Number: RS485-BL-XXX**
	1702	+(% style="color:blue" %)**Part Number: RS485-LN-XXX**
1161	1161
1162		-**XXX:**
	1704	+(% style="color:blue" %)**XXX:**
1163	1163
1164		-* **EU433**: frequency bands EU433
1165		-* **EU868**: frequency bands EU868
1166		-* **KR920**: frequency bands KR920
1167		-* **CN470**: frequency bands CN470
1168		-* **AS923**: frequency bands AS923
1169		-* **AU915**: frequency bands AU915
1170		-* **US915**: frequency bands US915
1171		-* **IN865**: frequency bands IN865
1172		-* **RU864**: frequency bands RU864
1173		-* **KZ865: **frequency bands KZ865
	1706	+* (% style="color:red" %)**EU433**(%%):  frequency bands EU433
	1707	+* (% style="color:red" %)**EU868**(%%):  frequency bands EU868
	1708	+* (% style="color:red" %)**KR920**(%%):  frequency bands KR920
	1709	+* (% style="color:red" %)**CN470**(%%):  frequency bands CN470
	1710	+* (% style="color:red" %)**AS923**(%%):  frequency bands AS923
	1711	+* (% style="color:red" %)**AU915**(%%):  frequency bands AU915
	1712	+* (% style="color:red" %)**US915**(%%):  frequency bands US915
	1713	+* (% style="color:red" %)**IN865**(%%):  frequency bands IN865
	1714	+* (% style="color:red" %)**RU864**(%%):  frequency bands RU864
	1715	+* (% style="color:red" %)**KZ865**(%%):  frequency bands KZ865
1174	1174
1175		-1. Packing Info
1176	1176
	1718	+
	1719	+= 9.Packing Info =
	1720	+
	1721	+
1177	1177	**Package Includes**:
1178	1178
1179		-* RS485-BL x 1
	1724	+* RS485-LN x 1
1180	1180	* Stick Antenna for LoRa RF part x 1
1181	1181	* Program cable x 1
1182	1182
...	...	@@ -1187,9 +1187,70 @@
1187	1187	* Package Size / pcs : 14.5 x 8 x 5 cm
1188	1188	* Weight / pcs : 170g
1189	1189
1190		-1. Support
1191	1191
1192		-* Support is provided Monday to Friday, from 09:00 to 18:00 GMT+8. Due to different timezones we cannot offer live support. However, your questions will be answered as soon as possible in the before-mentioned schedule.
1193		-* Provide as much information as possible regarding your enquiry (product models, accurately describe your problem and steps to replicate it etc) and send a mail to
1194	1194
1195		-[[support@dragino.com>>url:file:///D:/市场资料/说明书/LoRa/LT系列/support@dragino.com]]
	1737	+= 10. FCC Caution for RS485LN-US915 =
	1738	+
	1739	+
	1740	+(((
	1741	+Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
	1742	+)))
	1743	+
	1744	+(((
	1745	+This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
	1746	+)))
	1747	+
	1748	+(((
	1749	+
	1750	+)))
	1751	+
	1752	+(((
	1753	+(% style="color:red" %)**IMPORTANT NOTE:**
	1754	+)))
	1755	+
	1756	+(((
	1757	+(% style="color:red" %)**Note: **(%%)This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
	1758	+)))
	1759	+
	1760	+(((
	1761	+—Reorient or relocate the receiving antenna.
	1762	+)))
	1763	+
	1764	+(((
	1765	+—Increase the separation between the equipment and receiver.
	1766	+)))
	1767	+
	1768	+(((
	1769	+—Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
	1770	+)))
	1771	+
	1772	+(((
	1773	+—Consult the dealer or an experienced radio/TV technician for help.
	1774	+)))
	1775	+
	1776	+(((
	1777	+
	1778	+)))
	1779	+
	1780	+(((
	1781	+(% style="color:red" %)**FCC Radiation Exposure Statement:**
	1782	+)))
	1783	+
	1784	+(((
	1785	+This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment.This equipment should be installed and operated with minimum distance 20cm between the radiator& your body.
	1786	+)))
	1787	+
	1788	+
	1789	+
	1790	+= 11. Support =
	1791	+
	1792	+
	1793	+* (((
	1794	+Support is provided Monday to Friday, from 09:00 to 18:00 GMT+8. Due to different timezones we cannot offer live support. However, your questions will be answered as soon as possible in the before-mentioned schedule.
	1795	+)))
	1796	+* (((
	1797	+Provide as much information as possible regarding your enquiry (product models, accurately describe your problem and steps to replicate it etc) and send a mail to [[support@dragino.com>>url:file:///D:/市场资料/说明书/LoRa/LT系列/support@dragino.com]].
	1798	+
	1799	+
	1800	+
	1801	+)))

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