Wiki source code of RS485-LN – RS485 to LoRaWAN Converter

Version 57.27 by Xiaoling on 2022/06/06 09:21

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57.27	6	(% style="background-image:url(http://wiki1.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==\|\|height="15" role="presentation" title="Click and drag to move" width="15"]]
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18.2	11	RS485-LN – RS485 to LoRaWAN Converter User Manual
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3.2	16	Table of Contents:
1.1	17
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1.1	26
57.27	27	* [[1.Introduction>>doc:null\|\|anchor="H1.Introduction"]]
	28	** [[1.1 What is RS485-LN RS485 to LoRaWAN Converter>>doc:null\|\|anchor="H1.1A0WhatisRS485-LNRS485toLoRaWANConverter"]]
	29	** [[1.2 Specifications>>doc:null\|\|anchor="H1.2A0Specifications"]]
	30	** [[1.3 Features>>doc:null\|\|anchor="H1.3Features"]]
	31	** [[1.4 Applications>>doc:null\|\|anchor="H1.4A0Applications"]]
	32	** [[1.5 Firmware Change log>>doc:null\|\|anchor="H1.5A0FirmwareChangelog"]]
	33	** [[1.6 Hardware Change log>>doc:null\|\|anchor="H1.6HardwareChangelog"]]
	34	* [[2. Power ON Device>>doc:null\|\|anchor="H2.PowerONDevice"]]
	35	* [[3. Operation Mode>>doc:null\|\|anchor="H3.A0OperationMode"]]
	36	** [[3.1 How it works?>>doc:null\|\|anchor="H3.1Howitworks3F"]]
	37	** [[3.2 Example to join LoRaWAN network>>doc:null\|\|anchor="H3.2ExampletojoinLoRaWANnetwork"]]
	38	** [[3.3 Configure Commands to read data>>doc:null\|\|anchor="H3.3ConfigureCommandstoreaddata"]]
	39	*** [[3.3.1 onfigure UART settings for RS485 or TTL communication>>doc:null\|\|anchor="H3.3.1onfigureUARTsettingsforRS485orTTLcommunication"]]
	40	*** [[3.3.2 Configure sensors>>doc:null\|\|anchor="H3.3.2Configuresensors"]]
	41	*** [[3.3.3 Configure read commands for each sampling>>doc:null\|\|anchor="H3.3.3Configurereadcommandsforeachsampling"]]
	42	*** [[3.3.4 Compose the uplink payload>>doc:null\|\|anchor="H3.3.4Composetheuplinkpayload"]]
	43	*** [[3.3.5 Uplink on demand>>doc:null\|\|anchor="H3.3.5Uplinkondemand"]]
	44	*** [[3.3.6 Uplink on Interrupt>>doc:null\|\|anchor="H3.3.6UplinkonInterrupt"]]
	45	** [[3.4 Uplink Payload>>doc:null\|\|anchor="H3.4UplinkPayload"]]
	46	** [[3.5 Configure RS485-BL via AT or Downlink>>doc:null\|\|anchor="H3.5ConfigureRS485-BLviaATorDownlink"]]
	47	*** [[3.5.1 Common Commands>>doc:null\|\|anchor="H3.5.1CommonCommands"]]
	48	*** [[3.5.2 Sensor related commands>>doc:null\|\|anchor="H3.5.2Sensorrelatedcommands"]]
	49	*** [[3.5.3 Sensor related commands>>doc:null\|\|anchor="H3.5.3A0Sensorrelatedcommands"]]
	50	**** [[RS485 Debug Command>>doc:null\|\|anchor="HRS485DebugCommand"]]
	51	**** [[Set Payload version>>doc:null\|\|anchor="HSetPayloadversion"]]
	52	**** [[Set RS485 Sampling Commands>>doc:null\|\|anchor="HSetRS485SamplingCommands"]]
	53	**** [[Fast command to handle MODBUS device>>doc:null\|\|anchor="HFastcommandtohandleMODBUSdevice"]]
	54	**** [[RS485 command timeout>>doc:null\|\|anchor="HRS485commandtimeout"]]
	55	**** [[Uplink payload mode>>doc:null\|\|anchor="HUplinkpayloadmode"]]
	56	**** [[Manually trigger an Uplink>>doc:null\|\|anchor="HManuallytriggeranUplink"]]
	57	**** [[Clear RS485 Command>>doc:null\|\|anchor="HClearRS485Command"]]
	58	**** [[Set Serial Communication Parameters>>doc:null\|\|anchor="HSetSerialCommunicationParameters"]]
	59	** [[3.6 Listening mode for RS485 network>>doc:null\|\|anchor="H3.6A0ListeningmodeforRS485network"]]
	60	** [[3.7 Buttons>>doc:null\|\|anchor="H3.7Buttons"]]
	61	** [[3.8 LEDs>>doc:null\|\|anchor="H3.8LEDs"]]
	62	* [[4. Case Study>>doc:null\|\|anchor="H4.CaseStudy"]]
	63	* [[5. Use AT Command>>doc:null\|\|anchor="H5.UseATCommand"]]
	64	** [[5.1 Access AT Command>>doc:null\|\|anchor="H5.1AccessATCommand"]]
	65	** [[5.2 Common AT Command Sequence>>doc:null\|\|anchor="H5.2CommonATCommandSequence"]]
	66	*** [[5.2.1 Multi-channel ABP mode (Use with SX1301/LG308)>>doc:null\|\|anchor="H5.2.1Multi-channelABPmode28UsewithSX13012FLG30829"]]
	67	*** [[5.5.2 Single-channel ABP mode (Use with LG01/LG02)>>doc:null\|\|anchor="H5.5.2Single-channelABPmode28UsewithLG012FLG0229"]]
	68	* [[6. FAQ>>doc:null\|\|anchor="H6.FAQ"]]
	69	** [[6.1 How to upgrade the image?>>doc:null\|\|anchor="H6.1Howtoupgradetheimage3F"]]
	70	** [[6.2 How to change the LoRa Frequency Bands/Region?>>doc:null\|\|anchor="H6.2HowtochangetheLoRaFrequencyBands2FRegion3F"]]
	71	** [[6.3 How many RS485-Slave can RS485-BL connects?>>doc:null\|\|anchor="H6.3HowmanyRS485-SlavecanRS485-BLconnects3F"]]
	72	** [[6.4 Compatible question to ChirpStack and TTI LoRaWAN server ?>>doc:null\|\|anchor="H6.4CompatiblequestiontoChirpStackandTTILoRaWANserver3F"]]
	73	* [[7. Trouble Shooting>>doc:null\|\|anchor="H7.TroubleShooting"]]
	74	** [[7.1 Downlink doesn’t work, how to solve it?>>doc:null\|\|anchor="H7.1Downlinkdoesn2019twork2Chowtosolveit3F"]]
	75	** [[7.2 Why I can’t join TTN V3 in US915 /AU915 bands?>>doc:null\|\|anchor="H7.2WhyIcan2019tjoinTTNV3inUS9152FAU915bands3F"]]
	76	* [[8. Order Info>>doc:null\|\|anchor="H8.OrderInfo"]]
	77	* [[9.Packing Info>>doc:null\|\|anchor="H9.PackingInfo"]]
	78	* [[10. FCC Caution for RS485LN-US915>>doc:null\|\|anchor="H10.FCCCautionforRS485LN-US915"]]
	79	* [[11. Support>>doc:null\|\|anchor="H11.Support"]]
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1.1	81
57.27	82	(% style="background-image:url(http://wiki1.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==\|\|height="15" role="presentation" title="Click and drag to move" width="15"]]
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3.2	91	= 1.Introduction =
1.1	92
19.2	93	== 1.1 What is RS485-LN RS485 to LoRaWAN Converter ==
1.1	94
3.2	95	(((
	96	(((
32.3	97	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.
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32.3	101	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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32.3	105	(% 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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32.3	109	(% 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.
32.2	110
32.3	111	(% 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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57.27	115	(% aria-label="1653267211009-519.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1653267211009-519.png\|\|data-widget="image" height="419" width="724"]](% style="background-image:url(http://wiki1.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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32.4	117
3.2	118	== 1.2 Specifications ==
2.2	119
32.6	120
2.2	121	Hardware System:
	122
	123	* STM32L072CZT6 MCU
22.4	124	* SX1276/78 Wireless Chip
2.2	125	* Power Consumption (exclude RS485 device):
19.3	126	** Idle: 32mA@12v
	127	** 20dB Transmit: 65mA@12v
2.2	128
	129	Interface for Model:
	130
19.3	131	* RS485
22.4	132	* Power Input 7~~ 24V DC.
2.2	133
	134	LoRa Spec:
	135
	136	* Frequency Range:
	137	** Band 1 (HF): 862 ~~ 1020 Mhz
	138	** Band 2 (LF): 410 ~~ 528 Mhz
	139	* 168 dB maximum link budget.
	140	* +20 dBm - 100 mW constant RF output vs.
19.3	141	* +14 dBm high efficiency PA.
2.2	142	* Programmable bit rate up to 300 kbps.
	143	* High sensitivity: down to -148 dBm.
	144	* Bullet-proof front end: IIP3 = -12.5 dBm.
	145	* Excellent blocking immunity.
19.3	146	* Low RX current of 10.3 mA, 200 nA register retention.
2.2	147	* Fully integrated synthesizer with a resolution of 61 Hz.
19.3	148	* FSK, GFSK, MSK, GMSK, LoRaTM and OOK modulation.
2.2	149	* Built-in bit synchronizer for clock recovery.
	150	* Preamble detection.
	151	* 127 dB Dynamic Range RSSI.
19.3	152	* Automatic RF Sense and CAD with ultra-fast AFC.
57.2	153	* Packet engine up to 256 bytes with CRC
2.2	154
3.3	155	== 1.3 Features ==
2.2	156
19.4	157	* LoRaWAN Class A & Class C protocol (default Class C)
2.2	158	* Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865/RU864
	159	* AT Commands to change parameters
19.4	160	* Remote configure parameters via LoRa Downlink
2.2	161	* Firmware upgradable via program port
	162	* Support multiply RS485 devices by flexible rules
	163	* Support Modbus protocol
19.4	164	* Support Interrupt uplink (Since hardware version v1.2)
2.2	165
3.3	166	== 1.4 Applications ==
2.2	167
	168	* Smart Buildings & Home Automation
	169	* Logistics and Supply Chain Management
	170	* Smart Metering
	171	* Smart Agriculture
	172	* Smart Cities
	173	* Smart Factory
	174
6.2	175	== 1.5 Firmware Change log ==
2.2	176
19.4	177	[[RS485-LN Image files – Download link and Change log>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/]]
2.2	178
32.10	179
4.2	180	== 1.6 Hardware Change log ==
2.2	181
4.2	182	(((
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19.4	184	v1.2: Add External Interrupt Pin.
2.2	185
19.4	186	v1.0: Release
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2.2	191
20.2	192	= 2. Power ON Device =
2.2	193
6.2	194	(((
20.2	195	The RS485-LN can be powered by 7 ~~ 24V DC power source. Connection as below
2.2	196
20.2	197	* Power Source VIN to RS485-LN VIN+
	198	* Power Source GND to RS485-LN VIN-
2.2	199
20.3	200	(((
20.2	201	Once there is power, the RS485-LN will be on.
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57.27	204	(% aria-label="1653268091319-405.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1653268091319-405.png\|\|data-widget="image"]](% style="background-image:url(http://wiki1.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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6.2	209	= 3. Operation Mode =
2.2	210
6.2	211	== 3.1 How it works? ==
2.2	212
7.2	213	(((
21.2	214	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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2.2	218
7.2	219	== 3.2 Example to join LoRaWAN network ==
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6.2	221	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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57.27	223	(% aria-label="1653268155545-638.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1653268155545-638.png\|\|data-widget="image" height="334" width="724"]](% style="background-image:url(http://wiki1.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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15.3	226	(((
32.13	227	(((
22.2	228	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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32.13	231	(((
22.2	232	485A+ and 485B- of the sensor are connected to RS485A and RA485B of RS485-LN respectively.
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57.27	235	(% aria-label="1653268227651-549.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1653268227651-549.png\|\|data-widget="image" height="592" width="720"]](% style="background-image:url(http://wiki1.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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15.3	237	(((
57.20	238	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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15.3	241	(((
22.2	242	Step 1: Create a device in TTN V3 with the OTAA keys from RS485-LN.
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15.3	245	(((
22.2	246	Each RS485-LN is shipped with a sticker with unique device EUI:
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57.27	250	(% aria-label="1652953462722-299.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1652953462722-299.png\|\|data-widget="image"]](% style="background-image:url(http://wiki1.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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15.3	252	(((
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2.2	254	User can enter this key in their LoRaWAN Server portal. Below is TTN V3 screen shot:
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2.2	256
15.3	257	(((
2.2	258	Add APP EUI in the application.
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57.27	262	(% 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://wiki1.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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57.27	264	(% aria-label="image-20220519174512-2.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220519174512-2.png\|\|data-widget="image" height="323" width="720"]](% style="background-image:url(http://wiki1.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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57.27	266	(% 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://wiki1.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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57.27	268	(% 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://wiki1.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" %)
2.2	269
	270	You can also choose to create the device manually.
	271
57.27	272	(% 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://wiki1.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" %)
2.2	273
	274	Add APP KEY and DEV EUI
	275
57.27	276	(% aria-label="1652953553383-907.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1652953553383-907.png\|\|data-widget="image" height="514" width="724"]](% style="background-image:url(http://wiki1.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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15.2	279	(((
22.4	280	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.
15.2	281	)))
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57.27	283	(% 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://wiki1.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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32.14	285
15.5	286	== 3.3 Configure Commands to read data ==
2.2	287
15.5	288	(((
22.4	289	(((
57.20	290	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-BLviaATorDownlink"]] or LoRaWAN Downlink Command to configure what commands RS485-LN should send for each sampling and how to handle the return from RS485 devices.
15.5	291	)))
2.2	292
22.4	293	(((
	294	(% 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
32.15	295
	296
22.4	297	)))
	298	)))
	299
15.5	300	=== 3.3.1 onfigure UART settings for RS485 or TTL communication ===
2.2	301
22.6	302	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:
2.2	303
32.16	304	(% border="1" style="background-color:#ffffcc; color:green; width:782px" %)
	305	\|(% style="width:128px" %)(((
15.5	306	AT Commands
32.16	307	)))\|(% style="width:305px" %)(((
15.5	308	Description
32.16	309	)))\|(% style="width:346px" %)(((
15.5	310	Example
	311	)))
32.16	312	\|(% style="width:128px" %)(((
15.5	313	AT+BAUDR
32.16	314	)))\|(% style="width:305px" %)(((
15.5	315	Set the baud rate (for RS485 connection). Default Value is: 9600.
32.16	316	)))\|(% style="width:346px" %)(((
15.5	317	(((
2.2	318	AT+BAUDR=9600
15.5	319	)))
2.2	320
15.5	321	(((
2.2	322	Options: (1200,2400,4800,14400,19200,115200)
	323	)))
15.5	324	)))
32.16	325	\|(% style="width:128px" %)(((
15.5	326	AT+PARITY
32.16	327	)))\|(% style="width:305px" %)(((
2.2	328	Set UART parity (for RS485 connection)
32.16	329	)))\|(% style="width:346px" %)(((
15.5	330	(((
2.2	331	AT+PARITY=0
15.5	332	)))
2.2	333
15.5	334	(((
2.2	335	Option: 0: no parity, 1: odd parity, 2: even parity
	336	)))
15.5	337	)))
32.16	338	\|(% style="width:128px" %)(((
15.5	339	AT+STOPBIT
32.16	340	)))\|(% style="width:305px" %)(((
15.5	341	(((
2.2	342	Set serial stopbit (for RS485 connection)
15.5	343	)))
2.2	344
15.5	345	(((
22.6	346
15.5	347	)))
32.16	348	)))\|(% style="width:346px" %)(((
15.5	349	(((
2.2	350	AT+STOPBIT=0 for 1bit
15.5	351	)))
2.2	352
15.5	353	(((
2.2	354	AT+STOPBIT=1 for 1.5 bit
15.5	355	)))
2.2	356
15.5	357	(((
2.2	358	AT+STOPBIT=2 for 2 bits
	359	)))
15.5	360	)))
2.2	361
15.6	362	=== 3.3.2 Configure sensors ===
2.2	363
15.6	364	(((
	365	(((
22.7	366	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.
15.6	367	)))
22.7	368	)))
2.2	369
15.6	370	(% border="1" style="background-color:#ffffcc; color:green; width:806px" %)
	371	\|AT Commands\|(% style="width:418px" %)Description\|(% style="width:256px" %)Example
	372	\|AT+CFGDEV\|(% style="width:418px" %)(((
2.2	373	This command is used to configure the RS485/TTL devices; they won’t be used during sampling.
	374
15.6	375	AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,
2.2	376
15.6	377	mm: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
	378	)))\|(% style="width:256px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
2.2	379
15.6	380	=== 3.3.3 Configure read commands for each sampling ===
2.2	381
15.6	382	(((
35.2	383	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.
2.2	384
	385	To save the LoRaWAN network bandwidth, we might need to read data from different sensors and combine their valid value into a short payload.
	386
	387	This section describes how to achieve above goals.
	388
35.2	389	During each sampling, the RS485-LN can support 15 commands to read sensors. And combine the return to one or several uplink payloads.
2.2	390
	391
35.2	392	Each RS485 commands include two parts:
2.2	393
35.2	394	~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.
2.2	395
35.2	396	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.
2.2	397
35.4	398	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
2.2	399
	400
	401	After we got the valid value from each RS485 commands, we need to combine them together with the command AT+DATAUP.
	402
	403
	404	Below are examples for the how above AT Commands works.
	405
	406
35.2	407	AT+COMMANDx : This command will be sent to RS485 devices during each sampling, Max command length is 14 bytes. The grammar is:
	408
	409	(% border="1" style="background-color:#4bacc6; color:white; width:499px" %)
	410	\|(% style="width:496px" %)(((
2.2	411	AT+COMMANDx=xx xx xx xx xx xx xx xx xx xx xx xx,m
	412
	413	xx xx xx xx xx xx xx xx xx xx xx xx: The RS485 command to be sent
	414
	415	m: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
	416	)))
	417
	418	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.
	419
35.2	420	In the RS485-LN, we should use this command AT+COMMAND1=01 03 0B B8 00 02,1 for the same.
2.2	421
	422
	423	AT+DATACUTx : This command defines how to handle the return from AT+COMMANDx, max return length is 45 bytes.
	424
35.2	425	(% border="1" style="background-color:#4bacc6; color:white; width:725px" %)
	426	\|(% style="width:722px" %)(((
2.2	427	AT+DATACUTx=a,b,c
	428
	429	* a: length for the return of AT+COMMAND
	430	* b:1: grab valid value by byte, max 6 bytes. 2: grab valid value by bytes section, max 3 sections.
35.5	431	* c: define the position for valid value.
2.2	432	)))
	433
35.2	434	Examples:
	435
2.2	436	* Grab bytes:
	437
57.27	438	(% 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://wiki1.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" %)
2.2	439
35.2	440
2.2	441	* Grab a section.
	442
57.27	443	(% 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://wiki1.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" %)
2.2	444
35.2	445
2.2	446	* Grab different sections.
	447
57.27	448	(% 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://wiki1.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" %)
35.3	449
	450
35.2	451	)))
2.2	452
29.2	453	=== 3.3.4 Compose the uplink payload ===
2.2	454
29.2	455	(((
2.2	456	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.
35.5	457
	458
29.2	459	)))
2.2	460
29.2	461	(((
35.5	462	(% style="color:#037691" %)Examples: AT+DATAUP=0
	463
	464
29.2	465	)))
2.2	466
29.2	467	(((
	468	Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)A SIGNLE UPLINK.
	469	)))
2.2	470
29.2	471	(((
2.2	472	Final Payload is
29.2	473	)))
2.2	474
29.2	475	(((
	476	(% style="color:#4f81bd" %)Battery Info+PAYVER + VALID Value from RETURN1 + Valid Value from RETURN2 + … + RETURNx
	477	)))
2.2	478
29.2	479	(((
2.2	480	Where PAYVER is defined by AT+PAYVER, below is an example screen shot.
29.2	481	)))
2.2	482
57.27	483	(% 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://wiki1.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" %)
2.2	484
35.5	485
35.6	486	(% style="color:#037691" %)Examples: AT+DATAUP=1
2.2	487
35.5	488
30.2	489	Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)Multiply UPLINKs.
2.2	490
	491	Final Payload is
	492
30.2	493	(% style="color:#4f81bd" %)Battery Info+PAYVER + PAYLOAD COUNT + PAYLOAD# + DATA
2.2	494
57.16	495
36.2	496	1. PAYVER: Defined by AT+PAYVER
	497	1. PAYLOAD COUNT: Total how many uplinks of this sampling.
	498	1. PAYLOAD#: Number of this uplink. (from 0,1,2,3…,to PAYLOAD COUNT)
	499	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
2.2	500
57.27	501	(% 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://wiki1.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" %)
2.2	502
	503
36.2	504	So totally there will be 3 uplinks for this sampling, each uplink include 8 bytes DATA
2.2	505
36.2	506	DATA1=RETURN1 Valid Value + the first two of Valid value of RETURN10= 20 20 0a 33 90 41 02 aa
2.2	507
36.2	508	DATA2=3^^rd^^ ~~ 10^^th^^ byte of Valid value of RETURN10= 05 81 0a 20 20 20 20 2d
2.2	509
36.2	510	DATA3=the rest of Valid value of RETURN10= 30
2.2	511
36.2	512
	513	(% 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:
	514
	515	~* For AU915/AS923 bands, if UplinkDwell time=0, max 51 bytes for each uplink.
	516
	517	* For AU915/AS923 bands, if UplinkDwell time=0, max 11 bytes for each uplink.
	518
	519	* For US915 band, max 11 bytes for each uplink.
	520
	521	~* For all other bands: max 51 bytes for each uplink.
	522
	523
2.2	524	Below are the uplink payloads:
	525
57.27	526	(% 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://wiki1.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" %)
2.2	527
	528
31.3	529	=== 3.3.5 Uplink on demand ===
2.2	530
37.4	531	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.
2.2	532
	533	Downlink control command:
	534
37.4	535	0x08 command: Poll an uplink with current command set in RS485-LN.
2.2	536
37.4	537	0xA8 command: Send a command to RS485-LN and uplink the output from sensors.
2.2	538
	539
	540
38.2	541	=== 3.3.6 Uplink on Interrupt ===
2.2	542
38.2	543	RS485-LN support external Interrupt uplink since hardware v1.2 release.
2.2	544
57.27	545	(% 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://wiki1.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" %)
2.2	546
38.2	547	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.
2.2	548
	549
38.4	550	== 3.4 Uplink Payload ==
2.2	551
38.4	552	(% border="1" style="background-color:#4bacc6; color:white; width:734px" %)
	553	\|Size(bytes)\|(% style="width:120px" %)2\|(% style="width:116px" %)1\|(% style="width:386px" %)Length depends on the return from the commands
	554	\|Value\|(% style="width:120px" %)(((
2.2	555	Battery(mV)
	556
	557	&
	558
	559	Interrupt _Flag
38.4	560	)))\|(% style="width:116px" %)(((
2.2	561	PAYLOAD_VER
	562
	563
38.4	564	)))\|(% style="width:386px" %)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.
2.2	565
	566	Below is the decoder for the first 3 bytes. The rest bytes are dynamic depends on different RS485 sensors.
	567
	568
38.4	569	== 3.5 Configure RS485-BL via AT or Downlink ==
2.2	570
38.4	571	User can configure RS485-LN via AT Commands or LoRaWAN Downlink Commands
2.2	572
38.4	573	There are two kinds of Commands:
2.2	574
57.20	575	* (% 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]]
2.2	576
38.4	577	* (% style="color:#4f81bd" %)Sensor Related Commands(%%): These commands are special designed for RS485-LN. User can see these commands below:
2.2	578
38.4	579	=== 3.5.1 Common Commands ===
2.2	580
57.20	581	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]]
2.2	582
	583
41.1	584	=== 3.5.2 Sensor related commands ===
2.2	585
41.1	586	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.
2.2	587
57.27	588	(% 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"]](% style="background-image:url(http://wiki1.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" %)
2.2	589
41.1	590	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)
2.2	591
	592
42.2	593	=== 3.5.3 Sensor related commands ===
2.2	594
	595
57.6	596
42.2	597	==== RS485 Debug Command ====
	598
	599	This command is used to configure the RS485 devices; they won’t be used during sampling.
	600
	601	* AT Command
	602
	603	(% class="box infomessage" %)
	604	(((
	605	AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
	606	)))
	607
	608	m: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
	609
	610	* Downlink Payload
	611
	612	Format: A8 MM NN XX XX XX XX YY
	613
	614	Where:
	615
	616	* MM: 1: add CRC-16/MODBUS ; 0: no CRC
	617	* NN: The length of RS485 command
	618	* XX XX XX XX: RS485 command total NN bytes
	619	* YY: How many bytes will be uplink from the return of this RS485 command,
	620	** if YY=0, RS485-LN will execute the downlink command without uplink;
	621	** if YY>0, RS485-LN will uplink total YY bytes from the output of this RS485 command; Fport=200
	622	** if YY=FF, RS485-LN will uplink RS485 output with the downlink command content; Fport=200.
	623
	624	Example 1 ~-~-> Configure without ask for uplink (YY=0)
	625
	626	To connect a Modbus Alarm with below commands.
	627
	628	* 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.
	629
	630	* 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.
	631
	632	So if user want to use downlink command to control to RS485 Alarm, he can use:
	633
	634	(% style="color:#4f81bd" %)A8 01 06 0A 05 00 04 00 01 00(%%): to activate the RS485 Alarm
	635
	636	(% style="color:#4f81bd" %)A8 01 06 0A 05 00 04 00 00 00(%%): to deactivate the RS485 Alarm
	637
	638	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.
	639
	640
	641	Example 2 ~-~-> Configure with requesting uplink and original downlink command (YY=FF)
	642
	643	User in IoT server send a downlink command: (% style="color:#4f81bd" %)A8 01 06 0A 08 00 04 00 01 YY
	644
	645
	646	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:
	647
	648	A8 (% style="color:#4f81bd" %)0A 08 00 04 00 (% style="color:red" %)01 06 (% style="color:green" %)0A 08 00 04 00 00
	649
57.27	650	(% aria-label="1654159460680-153.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1654159460680-153.png\|\|data-widget="image"]](% style="background:url(~"http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png~") rgba(220, 220, 220, 0.5); left:0px; top:-15px" %)[[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" %)
42.2	651
42.3	652
	653
	654	==== Set Payload version ====
	655
	656	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.
	657
	658	* AT Command:
	659
	660	(% class="box infomessage" %)
	661	(((
	662	AT+PAYVER: Set PAYVER field = 1
	663	)))
	664
	665	* Downlink Payload:
	666
	667	0xAE 01 ~-~-> Set PAYVER field = 0x01
	668
	669	0xAE 0F ~-~-> Set PAYVER field = 0x0F
	670
	671
	672
	673	==== Set RS485 Sampling Commands ====
	674
44.2	675	AT+COMMANDx or AT+DATACUTx
42.3	676
57.20	677	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"]].
42.3	678
	679
	680	* AT Command:
	681
	682	(% class="box infomessage" %)
	683	(((
	684	AT+COMMANDx: Configure RS485 read command to sensor.
	685	)))
	686
	687	(% class="box infomessage" %)
	688	(((
	689	AT+DATACUTx: Configure how to handle return from RS485 devices.
	690	)))
	691
	692
	693	* Downlink Payload:
	694
	695	0xAF downlink command can be used to set AT+COMMANDx or AT+DATACUTx.
	696
	697	(% style="color:red" %)Note(%%): if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.
	698
	699	Format: AF MM NN LL XX XX XX XX YY
	700
	701	Where:
	702
	703	* MM: the ATCOMMAND or AT+DATACUT to be set. Value from 01 ~~ 0F,
	704	* NN: 0: no CRC; 1: add CRC-16/MODBUS ; 2: set the AT+DATACUT value.
	705	* LL: The length of AT+COMMAND or AT+DATACUT command
	706	* XX XX XX XX: AT+COMMAND or AT+DATACUT command
44.2	707	* YY: If YY=0, RS485-BL will execute the downlink command without uplink; if YY=1, RS485-LN will execute an uplink after got this command.
42.3	708
	709	Example:
	710
	711	(% 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
	712
	713	(% 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
	714
	715	(% 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
	716
	717
	718
	719	==== Fast command to handle MODBUS device ====
	720
	721	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]].
	722
	723	This command is valid since v1.3 firmware version
	724
44.2	725	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.
42.3	726
	727
	728	Example:
	729
44.2	730	* AT+MBFUN=1 and AT+DATACUT1/AT+DATACUT2 are not configure (0,0,0). So RS485-LN.
42.3	731	* 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.
	732	* 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.
	733
57.27	734	(% aria-label="image-20220602165351-6.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602165351-6.png\|\|data-widget="image"]](% style="background-image:url(http://wiki1.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" %)
42.3	735
57.27	736	(% aria-label="image-20220602165351-7.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602165351-7.png\|\|data-widget="image"]](% style="background-image:url(http://wiki1.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" %)
42.3	737
	738
	739
	740	==== RS485 command timeout ====
	741
44.3	742	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.
42.3	743
44.3	744	Default value: 0, range: 0 ~~ 65 seconds
42.3	745
	746	* AT Command:
	747
	748	(% class="box infomessage" %)
	749	(((
44.3	750	*AT+CMDDLaa=hex(bb cc)1000**
42.3	751	)))
	752
	753	Example:
	754
	755	AT+CMDDL1=1000 to send the open time to 1000ms
	756
	757
	758	* Downlink Payload:
	759
44.3	760	0x AA aa bb cc
42.3	761
44.3	762	Same as: AT+CMDDLaa=hex(bb cc)*1000
42.3	763
	764	Example:
	765
44.3	766	0xAA 01 00 01 ~-~-> Same as AT+CMDDL1=1000 ms
42.3	767
	768
	769
	770	==== Uplink payload mode ====
	771
	772	Define to use one uplink or multiple uplinks for the sampling.
	773
57.20	774	The use of this command please see: [[Compose Uplink payload>>\|\|anchor="H3.3.4Composetheuplinkpayload"]]
42.3	775
	776	* AT Command:
	777
	778	(% class="box infomessage" %)
	779	(((
	780	AT+DATAUP=0
	781	)))
	782
	783	(% class="box infomessage" %)
	784	(((
	785	AT+DATAUP=1
	786	)))
	787
	788
	789	* Downlink Payload:
	790
	791	0xAD 00 ~-~-> Same as AT+DATAUP=0
	792
	793	0xAD 01 ~-~-> Same as AT+DATAUP=1
	794
	795
	796
	797	==== Manually trigger an Uplink ====
	798
	799	Ask device to send an uplink immediately.
	800
45.2	801	* AT Command:
	802
57.25	803	No AT Command for this, user can press the [[ACT button>>\|\|anchor="H3.7Buttons"]] for 1 second for the same.
45.2	804
	805
42.3	806	* Downlink Payload:
	807
45.2	808	0x08 FF, RS485-LN will immediately send an uplink.
42.3	809
	810
	811
	812	==== Clear RS485 Command ====
	813
	814	The AT+COMMANDx and AT+DATACUTx settings are stored in special location, user can use below command to clear them.
	815
	816	* AT Command:
	817
45.2	818	AT+CMDEAR=mm,nn mm: start position of erase ,nn: stop position of erase
	819
	820	Etc. AT+CMDEAR=1,10 means erase AT+COMMAND1/AT+DATACUT1 to AT+COMMAND10/AT+DATACUT10
	821
47.2	822	Example screen shot after clear all RS485 commands.
45.2	823
	824
	825	The uplink screen shot is:
	826
57.27	827	(% aria-label="1654160691922-496.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1654160691922-496.png\|\|data-widget="image"]](% style="background:url(~"http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png~") rgba(220, 220, 220, 0.5); left:0px; top:-15px" %)[[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" %)
45.2	828
	829
45.3	830	* Downlink Payload:
45.2	831
45.3	832	0x09 aa bb same as AT+CMDEAR=aa,bb
45.2	833
	834
45.3	835
42.3	836	==== Set Serial Communication Parameters ====
	837
	838	Set the Rs485 serial communication parameters:
	839
	840	* AT Command:
	841
	842	Set Baud Rate:
	843
	844	(% class="box infomessage" %)
	845	(((
	846	AT+BAUDR=9600 ~/~/ Options: (1200,2400,4800,14400,19200,115200)
	847	)))
	848
	849	Set UART Parity
	850
	851	(% class="box infomessage" %)
	852	(((
	853	AT+PARITY=0 ~/~/ Option: 0: no parity, 1: odd parity, 2: even parity
	854	)))
	855
	856	Set STOPBIT
	857
	858	(% class="box infomessage" %)
	859	(((
	860	AT+STOPBIT=0 ~/~/ Option: 0 for 1bit; 1 for 1.5 bit ; 2 for 2 bits
	861	)))
	862
	863
	864	* Downlink Payload:
	865
	866	A7 01 aa bb: Same AT+BAUDR=hex(aa bb)*100
	867
	868	Example:
	869
	870	* A7 01 00 60 same as AT+BAUDR=9600
	871	* A7 01 04 80 same as AT+BAUDR=115200
	872
	873	A7 02 aa: Same as AT+PARITY=aa (aa value: 00 , 01 or 02)
	874
	875	A7 03 aa: Same as AT+STOPBIT=aa (aa value: 00 , 01 or 02)
	876
	877
47.2	878	== 3.6 Listening mode for RS485 network ==
42.3	879
47.2	880	This feature support since firmware v1.4
	881
	882	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.
	883
57.27	884	(% 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:url(~"http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png~") rgba(220, 220, 220, 0.5); left:0px; top:-15px" %)[[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" %)
47.2	885
	886	To enable the listening mode, use can run the command AT+RXMODE.
	887
	888
	889	(% border="1" style="background-color:#ffffcc; width:500px" %)
	890	\|=(% style="width: 161px;" %)Command example:\|=(% style="width: 337px;" %)Function
	891	\|(% style="width:161px" %)AT+RXMODE=1,10 \|(% style="width:337px" %)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.
	892	\|(% style="width:161px" %)AT+RXMODE=2,500\|(% style="width:337px" %)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
	893	\|(% style="width:161px" %)AT+RXMODE=0,0\|(% style="width:337px" %)Disable listening mode. This is the default settings.
	894	\|(% style="width:161px" %) \|(% style="width:337px" %)A6 aa bb cc same as AT+RXMODE=aa,(bb<<8 ~\| cc)
	895
	896	Downlink Command:
	897
	898	0xA6 aa bb cc same as AT+RXMODE=aa,(bb<<8 \| cc)
	899
	900
	901	Example:
	902
	903	The RS485-LN is set to AT+RXMODE=2,1000
	904
	905	There is a two Modbus commands in the RS485 network as below:
	906
	907	The Modbus master send a command: (% style="background-color:#ffc000" %)01 03 00 00 00 02 c4 0b
	908
	909	And Modbus slave reply with: (% style="background-color:green" %)01 03 04 00 00 00 00 fa 33
	910
	911	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
	912
57.27	913	(% aria-label="image-20220602171200-9.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602171200-9.png\|\|data-widget="image"]](% style="background:url(~"http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png~") rgba(220, 220, 220, 0.5); left:0px; top:-15px" %)[[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" %)
47.2	914
	915
47.3	916	(% 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.
47.2	917
	918
47.3	919	== 3.7 Buttons ==
	920
	921
	922	(% border="1" style="background-color:#f7faff; width:500px" %)
	923	\|=Button\|=(% style="width: 1420px;" %)Feature
	924	\|ACT\|(% style="width:1420px" %)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
	925	\|RST\|(% style="width:1420px" %)Reboot RS485
57.20	926	\|PRO\|(% style="width:1420px" %)Use for upload image, see [[How to Update Image>>path:#upgrade_image]]
47.3	927
57.26	928
	929
47.3	930	== 3.8 LEDs ==
	931
	932	(% border="1" style="background-color:#f7faff; width:500px" %)
	933	\|=LEDs\|=Feature
	934	\|PWR\|Always on if there is power
	935	\|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.
	936
	937	= 4. Case Study =
	938
57.20	939	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]]
47.3	940
	941
	942	= 5. Use AT Command =
	943
	944	== 5.1 Access AT Command ==
	945
	946	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.
	947
57.27	948	(% 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://wiki1.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" %)
47.3	949
	950
	951	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-BL. The default password is 123456. Below is the output for reference:
	952
57.27	953	(% 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://wiki1.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" %)
47.3	954
	955
57.20	956	More detail AT Command manual can be found at [[AT Command Manual>>\|\|anchor="3.5ConfigureRS485-BLviaATorDownlink"]]
47.3	957
	958
	959	== 5.2 Common AT Command Sequence ==
	960
	961	=== 5.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
	962
	963	If device has not joined network yet:
	964
	965	(% class="box infomessage" %)
	966	(((
	967	AT+FDR
	968	)))
	969
	970	(% class="box infomessage" %)
	971	(((
	972	AT+NJM=0
	973	)))
	974
	975	(% class="box infomessage" %)
	976	(((
	977	ATZ
	978	)))
	979
	980
	981	If device already joined network:
	982
	983	(% class="box infomessage" %)
	984	(((
	985	AT+NJM=0
	986	)))
	987
	988	(% class="box infomessage" %)
	989	(((
	990	ATZ
	991	)))
	992
	993
	994	=== 5.5.2 Single-channel ABP mode (Use with LG01/LG02) ===
	995
	996
49.3	997	(% style="background-color:#dcdcdc" %)AT+FDR (%%) Reset Parameters to Factory Default, Keys Reserve
47.3	998
	999	(% style="background-color:#dcdcdc" %)AT+NJM=0 (%%)Set to ABP mode
	1000
	1001	(% style="background-color:#dcdcdc" %)AT+ADR=0 (%%)Set the Adaptive Data Rate Off
	1002
51.3	1003	(% style="background-color:#dcdcdc" %)AT+DR=5 (%%)Set Data Rate
47.3	1004
	1005	(% style="background-color:#dcdcdc" %)AT+TDC=60000 (%%) Set transmit interval to 60 seconds
	1006
	1007	(% style="background-color:#dcdcdc" %)AT+CHS=868400000(%%) Set transmit frequency to 868.4Mhz
	1008
	1009	(% style="background-color:#dcdcdc" %)AT+RX2FQ=868400000 (%%) Set RX2Frequency to 868.4Mhz (according to the result from server)
	1010
	1011	(% style="background-color:#dcdcdc" %)AT+RX2DR=5 (%%) Set RX2DR to match the downlink DR from server. see below
	1012
	1013	(% 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.
	1014
	1015	(% style="background-color:#dcdcdc" %)ATZ (%%) Reset MCU
	1016
	1017
	1018	(% style="color:red" %)Note:
	1019
	1020	(% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server.
	1021	2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
	1022	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.
	1023	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
	1024
57.27	1025	(% 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://wiki1.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" %)
47.3	1026
	1027
	1028	= 6. FAQ =
	1029
	1030	== 6.1 How to upgrade the image? ==
	1031
51.2	1032	The RS485-LN LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to RS485-LN to:
47.3	1033
	1034	* Support new features
	1035	* For bug fix
	1036	* Change LoRaWAN bands.
	1037
51.2	1038	Below shows the hardware connection for how to upload an image to RS485-LN:
47.3	1039
57.27	1040	(% 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://wiki1.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" %)
47.3	1041
	1042	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]].
	1043
	1044	Step2: Download the [[LT Image files>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]].
	1045
	1046	Step3: Open flashloader; choose the correct COM port to update.
	1047
52.2	1048	(% 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.
51.3	1049
47.3	1050
57.27	1051	(% 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://wiki1.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" %)
47.3	1052
	1053
57.27	1054	(% 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://wiki1.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" %)
47.3	1055
	1056
57.27	1057	(% 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://wiki1.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" %)
56.2	1058
56.4	1059
52.2	1060	Notice: In case user has lost the program cable. User can hand made one from a 3.5mm cable. The pin mapping is:
47.3	1061
57.27	1062	(% 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://wiki1.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" %)
52.2	1063
	1064
47.3	1065	== 6.2 How to change the LoRa Frequency Bands/Region? ==
	1066
57.20	1067	User can follow the introduction for [[how to upgrade image>>\|\|anchor="H6.1Howtoupgradetheimage3F"]]. When download the images, choose the required image file for download.
47.3	1068
	1069
	1070	== 6.3 How many RS485-Slave can RS485-BL connects? ==
	1071
57.20	1072	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>>\|\|anchor="H3.3.3Configurereadcommandsforeachsampling"]].
47.3	1073
	1074
51.4	1075	== 6.4 Compatible question to ChirpStack and TTI LoRaWAN server ? ==
47.3	1076
51.4	1077	When user need to use with ChirpStack or TTI. Please set AT+RPL=4.
	1078
57.20	1079	Detail info check this link: [[Set Packet Receiving Response Level>>doc:Main.End Device AT Commands and Downlink Command.WebHome\|\|anchor="H7.23SetPacketReceivingResponseLevel"]]
51.4	1080
	1081
47.3	1082	= 7. Trouble Shooting =
	1083
	1084	== 7.1 Downlink doesn’t work, how to solve it? ==
	1085
57.20	1086	Please see this link for debug: [[LoRaWAN Communication Debug>>doc:Main.LoRaWAN Communication Debug.WebHome]]
47.3	1087
	1088
	1089	== 7.2 Why I can’t join TTN V3 in US915 /AU915 bands? ==
	1090
57.20	1091	It might about the channels mapping. Please see for detail: [[Notice of Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome\|\|anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
47.3	1092
	1093
	1094	= 8. Order Info =
	1095
51.8	1096	(% style="color:blue" %)Part Number: RS485-LN-XXX
47.3	1097
	1098	(% style="color:blue" %)XXX:
	1099
	1100	* (% style="color:blue" %)EU433(%%): frequency bands EU433
	1101	* (% style="color:blue" %)EU868(%%): frequency bands EU868
	1102	* (% style="color:blue" %)KR920(%%): frequency bands KR920
	1103	* (% style="color:blue" %)CN470(%%): frequency bands CN470
	1104	* (% style="color:blue" %)AS923(%%): frequency bands AS923
	1105	* (% style="color:blue" %)AU915(%%): frequency bands AU915
	1106	* (% style="color:blue" %)US915(%%): frequency bands US915
	1107	* (% style="color:blue" %)IN865(%%): frequency bands IN865
	1108	* (% style="color:blue" %)RU864(%%): frequency bands RU864
	1109	* (% style="color:blue" %)KZ865(%%): frequency bands KZ865
	1110
51.8	1111	= 9.Packing Info =
	1112
	1113
	1114	Package Includes:
	1115
	1116	* RS485-LN x 1
	1117	* Stick Antenna for LoRa RF part x 1
	1118	* Program cable x 1
	1119
	1120	Dimension and weight:
	1121
	1122	* Device Size: 13.5 x 7 x 3 cm
	1123	* Device Weight: 105g
	1124	* Package Size / pcs : 14.5 x 8 x 5 cm
	1125	* Weight / pcs : 170g
	1126
	1127	= 10. FCC Caution for RS485LN-US915 =
	1128
	1129	Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
	1130
	1131	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.
	1132
	1133
	1134	IMPORTANT NOTE:
	1135
	1136	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:
	1137
	1138	—Reorient or relocate the receiving antenna.
	1139
	1140	—Increase the separation between the equipment and receiver.
	1141
	1142	—Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
	1143
	1144	—Consult the dealer or an experienced radio/TV technician for help.
	1145
	1146
	1147	FCC Radiation Exposure Statement:
	1148
	1149	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.
	1150
	1151
	1152	= 11. Support =
	1153
	1154	* 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.
	1155	* 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]].

Wiki source code of RS485-LN – RS485 to LoRaWAN Converter

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