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

Version 57.19 by Xiaoling on 2022/06/06 09:12

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3.2	1	(% style="text-align:center" %)
57.19	2	[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/1653266934636-343.png?width=385&height=385&rev=1.1\|\|alt="1653266934636-343.png" height="385" width="385"]]
1.1	3
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18.2	6	RS485-LN – RS485 to LoRaWAN Converter User Manual
1.1	7
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57.6	9
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3.2	11	Table of Contents:
1.1	12
57.19	13	* [[1.Introduction>>path:#H1.Introduction]]
	14	** [[1.1 What is RS485-LN RS485 to LoRaWAN Converter>>path:#H1.1A0WhatisRS485-LNRS485toLoRaWANConverter]]
	15	** [[1.2 Specifications>>path:#H1.2A0Specifications]]
	16	** [[1.3 Features>>path:#H1.3Features]]
	17	** [[1.4 Applications>>path:#H1.4A0Applications]]
	18	** [[1.5 Firmware Change log>>path:#H1.5A0FirmwareChangelog]]
	19	** [[1.6 Hardware Change log>>path:#H1.6HardwareChangelog]]
	20	* [[2. Power ON Device>>path:#H2.PowerONDevice]]
	21	* [[3. Operation Mode>>path:#H3.A0OperationMode]]
	22	** [[3.1 How it works?>>path:#H3.1Howitworks3F]]
	23	** [[3.2 Example to join LoRaWAN network>>path:#H3.2ExampletojoinLoRaWANnetwork]]
	24	** [[3.3 Configure Commands to read data>>path:#H3.3ConfigureCommandstoreaddata]]
	25	*** [[3.3.1 onfigure UART settings for RS485 or TTL communication>>path:#H3.3.1onfigureUARTsettingsforRS485orTTLcommunication]]
	26	*** [[3.3.2 Configure sensors>>path:#H3.3.2Configuresensors]]
	27	*** [[3.3.3 Configure read commands for each sampling>>path:#H3.3.3Configurereadcommandsforeachsampling]]
	28	*** [[3.3.4 Compose the uplink payload>>path:#H3.3.4Composetheuplinkpayload]]
	29	*** [[3.3.5 Uplink on demand>>path:#H3.3.5Uplinkondemand]]
	30	*** [[3.3.6 Uplink on Interrupt>>path:#H3.3.6UplinkonInterrupt]]
	31	** [[3.4 Uplink Payload>>path:#H3.4UplinkPayload]]
	32	** [[3.5 Configure RS485-BL via AT or Downlink>>path:#H3.5ConfigureRS485-BLviaATorDownlink]]
	33	*** [[3.5.1 Common Commands>>path:#H3.5.1CommonCommands]]
	34	*** [[3.5.2 Sensor related commands>>path:#H3.5.2Sensorrelatedcommands]]
	35	*** [[3.5.3 Sensor related commands>>path:#H3.5.3A0Sensorrelatedcommands]]
	36	**** [[RS485 Debug Command>>path:#HRS485DebugCommand]]
	37	**** [[Set Payload version>>path:#HSetPayloadversion]]
	38	**** [[Set RS485 Sampling Commands>>path:#HSetRS485SamplingCommands]]
	39	**** [[Fast command to handle MODBUS device>>path:#HFastcommandtohandleMODBUSdevice]]
	40	**** [[RS485 command timeout>>path:#HRS485commandtimeout]]
	41	**** [[Uplink payload mode>>path:#HUplinkpayloadmode]]
	42	**** [[Manually trigger an Uplink>>path:#HManuallytriggeranUplink]]
	43	**** [[Clear RS485 Command>>path:#HClearRS485Command]]
	44	**** [[Set Serial Communication Parameters>>path:#HSetSerialCommunicationParameters]]
	45	** [[3.6 Listening mode for RS485 network>>path:#H3.6A0ListeningmodeforRS485network]]
	46	** [[3.7 Buttons>>path:#H3.7Buttons]]
	47	** [[3.8 LEDs>>path:#H3.8LEDs]]
	48	* [[4. Case Study>>path:#H4.CaseStudy]]
	49	* [[5. Use AT Command>>path:#H5.UseATCommand]]
	50	** [[5.1 Access AT Command>>path:#H5.1AccessATCommand]]
	51	** [[5.2 Common AT Command Sequence>>path:#H5.2CommonATCommandSequence]]
	52	*** [[5.2.1 Multi-channel ABP mode (Use with SX1301/LG308)>>path:#H5.2.1Multi-channelABPmode28UsewithSX13012FLG30829]]
	53	*** [[5.5.2 Single-channel ABP mode (Use with LG01/LG02)>>path:#H5.5.2Single-channelABPmode28UsewithLG012FLG0229]]
	54	* [[6. FAQ>>path:#H6.FAQ]]
	55	** [[6.1 How to upgrade the image?>>path:#H6.1Howtoupgradetheimage3F]]
	56	** [[6.2 How to change the LoRa Frequency Bands/Region?>>path:#H6.2HowtochangetheLoRaFrequencyBands2FRegion3F]]
	57	** [[6.3 How many RS485-Slave can RS485-BL connects?>>path:#H6.3HowmanyRS485-SlavecanRS485-BLconnects3F]]
	58	** [[6.4 Compatible question to ChirpStack and TTI LoRaWAN server ?>>path:#H6.4CompatiblequestiontoChirpStackandTTILoRaWANserver3F]]
	59	* [[7. Trouble Shooting>>path:#H7.TroubleShooting]]
	60	** [[7.1 Downlink doesn’t work, how to solve it?>>path:#H7.1Downlinkdoesn2019twork2Chowtosolveit3F]]
	61	** [[7.2 Why I can’t join TTN V3 in US915 /AU915 bands?>>path:#H7.2WhyIcan2019tjoinTTNV3inUS9152FAU915bands3F]]
	62	* [[8. Order Info>>path:#H8.OrderInfo]]
	63	* [[9.Packing Info>>path:#H9.PackingInfo]]
	64	* [[10. FCC Caution for RS485LN-US915>>path:#H10.FCCCautionforRS485LN-US915]]
	65	* [[11. Support>>path:#H11.Support]]
1.1	66
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57.6	70
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3.2	73	= 1.Introduction =
1.1	74
19.2	75	== 1.1 What is RS485-LN RS485 to LoRaWAN Converter ==
1.1	76
3.2	77	(((
	78	(((
32.3	79	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.
3.2	80	)))
2.2	81
3.2	82	(((
32.3	83	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.
3.2	84	)))
2.2	85
3.2	86	(((
32.3	87	(% 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.
3.2	88	)))
2.2	89
3.2	90	(((
32.3	91	(% 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	92
32.3	93	(% 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]]
3.2	94	)))
	95	)))
2.2	96
57.19	97	[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/1653267211009-519.png?width=724&height=419&rev=1.1\|\|alt="1653267211009-519.png" height="419" width="724"]]
2.2	98
32.4	99
3.2	100	== 1.2 Specifications ==
2.2	101
32.6	102
2.2	103	Hardware System:
	104
	105	* STM32L072CZT6 MCU
22.4	106	* SX1276/78 Wireless Chip
2.2	107	* Power Consumption (exclude RS485 device):
19.3	108	** Idle: 32mA@12v
	109	** 20dB Transmit: 65mA@12v
2.2	110
	111	Interface for Model:
	112
19.3	113	* RS485
22.4	114	* Power Input 7~~ 24V DC.
2.2	115
	116	LoRa Spec:
	117
	118	* Frequency Range:
	119	** Band 1 (HF): 862 ~~ 1020 Mhz
	120	** Band 2 (LF): 410 ~~ 528 Mhz
	121	* 168 dB maximum link budget.
	122	* +20 dBm - 100 mW constant RF output vs.
19.3	123	* +14 dBm high efficiency PA.
2.2	124	* Programmable bit rate up to 300 kbps.
	125	* High sensitivity: down to -148 dBm.
	126	* Bullet-proof front end: IIP3 = -12.5 dBm.
	127	* Excellent blocking immunity.
19.3	128	* Low RX current of 10.3 mA, 200 nA register retention.
2.2	129	* Fully integrated synthesizer with a resolution of 61 Hz.
19.3	130	* FSK, GFSK, MSK, GMSK, LoRaTM and OOK modulation.
2.2	131	* Built-in bit synchronizer for clock recovery.
	132	* Preamble detection.
	133	* 127 dB Dynamic Range RSSI.
19.3	134	* Automatic RF Sense and CAD with ultra-fast AFC.
57.2	135	* Packet engine up to 256 bytes with CRC
2.2	136
3.3	137	== 1.3 Features ==
2.2	138
19.4	139	* LoRaWAN Class A & Class C protocol (default Class C)
2.2	140	* Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865/RU864
	141	* AT Commands to change parameters
19.4	142	* Remote configure parameters via LoRa Downlink
2.2	143	* Firmware upgradable via program port
	144	* Support multiply RS485 devices by flexible rules
	145	* Support Modbus protocol
19.4	146	* Support Interrupt uplink (Since hardware version v1.2)
2.2	147
3.3	148	== 1.4 Applications ==
2.2	149
	150	* Smart Buildings & Home Automation
	151	* Logistics and Supply Chain Management
	152	* Smart Metering
	153	* Smart Agriculture
	154	* Smart Cities
	155	* Smart Factory
	156
6.2	157	== 1.5 Firmware Change log ==
2.2	158
19.4	159	[[RS485-LN Image files – Download link and Change log>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/]]
2.2	160
32.10	161
4.2	162	== 1.6 Hardware Change log ==
2.2	163
4.2	164	(((
	165	(((
19.4	166	v1.2: Add External Interrupt Pin.
2.2	167
19.4	168	v1.0: Release
32.10	169
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4.2	171	)))
	172	)))
2.2	173
20.2	174	= 2. Power ON Device =
2.2	175
6.2	176	(((
20.2	177	The RS485-LN can be powered by 7 ~~ 24V DC power source. Connection as below
2.2	178
20.2	179	* Power Source VIN to RS485-LN VIN+
	180	* Power Source GND to RS485-LN VIN-
2.2	181
20.3	182	(((
20.2	183	Once there is power, the RS485-LN will be on.
20.3	184	)))
2.2	185
57.19	186	[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/1653268091319-405.png?rev=1.1\|\|alt="1653268091319-405.png"]]
32.11	187
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20.2	189	)))
2.2	190
6.2	191	= 3. Operation Mode =
2.2	192
6.2	193	== 3.1 How it works? ==
2.2	194
7.2	195	(((
21.2	196	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.
32.12	197
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7.2	199	)))
2.2	200
7.2	201	== 3.2 Example to join LoRaWAN network ==
2.2	202
6.2	203	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.
2.2	204
57.19	205	[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/1653268155545-638.png?width=724&height=334&rev=1.1\|\|alt="1653268155545-638.png" height="334" width="724"]]
2.2	206
32.13	207
15.3	208	(((
32.13	209	(((
22.2	210	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:
32.13	211	)))
2.2	212
32.13	213	(((
22.2	214	485A+ and 485B- of the sensor are connected to RS485A and RA485B of RS485-LN respectively.
32.13	215	)))
22.2	216
57.19	217	[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/1653268227651-549.png?width=720&height=592&rev=1.1\|\|alt="1653268227651-549.png" height="592" width="720"]]
22.2	218
15.3	219	(((
57.19	220	The LG308 is already set to connect to (% class="wikiinternallink" %)[[TTN V3 network >>url:https://www.thethingsnetwork.org/]](%%). So what we need to now is only configure the TTN V3:
15.3	221	)))
2.2	222
15.3	223	(((
22.2	224	Step 1: Create a device in TTN V3 with the OTAA keys from RS485-LN.
15.3	225	)))
2.2	226
15.3	227	(((
22.2	228	Each RS485-LN is shipped with a sticker with unique device EUI:
15.3	229	)))
22.2	230	)))
2.2	231
57.19	232	[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/1652953462722-299.png?rev=1.1\|\|alt="1652953462722-299.png"]]
2.2	233
15.3	234	(((
22.3	235	(((
2.2	236	User can enter this key in their LoRaWAN Server portal. Below is TTN V3 screen shot:
15.3	237	)))
2.2	238
15.3	239	(((
2.2	240	Add APP EUI in the application.
15.3	241	)))
22.3	242	)))
2.2	243
57.19	244	[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/image-20220519174512-1.png?rev=1.1\|\|alt="image-20220519174512-1.png"]]
2.2	245
57.19	246	[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/image-20220519174512-2.png?width=720&height=323&rev=1.1\|\|alt="image-20220519174512-2.png" height="323" width="720"]]
2.2	247
57.19	248	[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/image-20220519174512-3.png?width=724&height=556&rev=1.1\|\|alt="image-20220519174512-3.png" height="556" width="724"]]
2.2	249
57.19	250	[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/image-20220519174512-4.png?rev=1.1\|\|alt="image-20220519174512-4.png"]]
2.2	251
	252	You can also choose to create the device manually.
	253
57.19	254	[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/1652953542269-423.png?width=723&height=710&rev=1.1\|\|alt="1652953542269-423.png" height="710" width="723"]]
2.2	255
	256	Add APP KEY and DEV EUI
	257
57.19	258	[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/1652953553383-907.png?width=724&height=514&rev=1.1\|\|alt="1652953553383-907.png" height="514" width="724"]]
2.2	259
	260
15.2	261	(((
22.4	262	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	263	)))
2.2	264
57.19	265	[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/1652953568895-172.png?width=724&height=232&rev=1.1\|\|alt="1652953568895-172.png" height="232" width="724"]]
2.2	266
32.14	267
15.5	268	== 3.3 Configure Commands to read data ==
2.2	269
15.5	270	(((
22.4	271	(((
57.19	272	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:#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	273	)))
2.2	274
22.4	275	(((
	276	(% 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	277
	278
22.4	279	)))
	280	)))
	281
15.5	282	=== 3.3.1 onfigure UART settings for RS485 or TTL communication ===
2.2	283
22.6	284	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	285
32.16	286	(% border="1" style="background-color:#ffffcc; color:green; width:782px" %)
	287	\|(% style="width:128px" %)(((
15.5	288	AT Commands
32.16	289	)))\|(% style="width:305px" %)(((
15.5	290	Description
32.16	291	)))\|(% style="width:346px" %)(((
15.5	292	Example
	293	)))
32.16	294	\|(% style="width:128px" %)(((
15.5	295	AT+BAUDR
32.16	296	)))\|(% style="width:305px" %)(((
15.5	297	Set the baud rate (for RS485 connection). Default Value is: 9600.
32.16	298	)))\|(% style="width:346px" %)(((
15.5	299	(((
2.2	300	AT+BAUDR=9600
15.5	301	)))
2.2	302
15.5	303	(((
2.2	304	Options: (1200,2400,4800,14400,19200,115200)
	305	)))
15.5	306	)))
32.16	307	\|(% style="width:128px" %)(((
15.5	308	AT+PARITY
32.16	309	)))\|(% style="width:305px" %)(((
2.2	310	Set UART parity (for RS485 connection)
32.16	311	)))\|(% style="width:346px" %)(((
15.5	312	(((
2.2	313	AT+PARITY=0
15.5	314	)))
2.2	315
15.5	316	(((
2.2	317	Option: 0: no parity, 1: odd parity, 2: even parity
	318	)))
15.5	319	)))
32.16	320	\|(% style="width:128px" %)(((
15.5	321	AT+STOPBIT
32.16	322	)))\|(% style="width:305px" %)(((
15.5	323	(((
2.2	324	Set serial stopbit (for RS485 connection)
15.5	325	)))
2.2	326
15.5	327	(((
22.6	328
15.5	329	)))
32.16	330	)))\|(% style="width:346px" %)(((
15.5	331	(((
2.2	332	AT+STOPBIT=0 for 1bit
15.5	333	)))
2.2	334
15.5	335	(((
2.2	336	AT+STOPBIT=1 for 1.5 bit
15.5	337	)))
2.2	338
15.5	339	(((
2.2	340	AT+STOPBIT=2 for 2 bits
	341	)))
15.5	342	)))
2.2	343
57.14	344
15.6	345	=== 3.3.2 Configure sensors ===
2.2	346
15.6	347	(((
	348	(((
22.7	349	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	350	)))
22.7	351	)))
2.2	352
15.6	353	(% border="1" style="background-color:#ffffcc; color:green; width:806px" %)
	354	\|AT Commands\|(% style="width:418px" %)Description\|(% style="width:256px" %)Example
	355	\|AT+CFGDEV\|(% style="width:418px" %)(((
2.2	356	This command is used to configure the RS485/TTL devices; they won’t be used during sampling.
	357
15.6	358	AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,
2.2	359
15.6	360	mm: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
	361	)))\|(% style="width:256px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
2.2	362
57.15	363
15.6	364	=== 3.3.3 Configure read commands for each sampling ===
2.2	365
15.6	366	(((
35.2	367	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	368
	369	To save the LoRaWAN network bandwidth, we might need to read data from different sensors and combine their valid value into a short payload.
	370
	371	This section describes how to achieve above goals.
	372
35.2	373	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	374
	375
35.2	376	Each RS485 commands include two parts:
2.2	377
35.2	378	~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	379
35.2	380	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	381
35.4	382	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	383
	384
	385	After we got the valid value from each RS485 commands, we need to combine them together with the command AT+DATAUP.
	386
	387
	388	Below are examples for the how above AT Commands works.
	389
	390
35.2	391	AT+COMMANDx : This command will be sent to RS485 devices during each sampling, Max command length is 14 bytes. The grammar is:
	392
	393	(% border="1" style="background-color:#4bacc6; color:white; width:499px" %)
	394	\|(% style="width:496px" %)(((
2.2	395	AT+COMMANDx=xx xx xx xx xx xx xx xx xx xx xx xx,m
	396
	397	xx xx xx xx xx xx xx xx xx xx xx xx: The RS485 command to be sent
	398
	399	m: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
	400	)))
	401
	402	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.
	403
35.2	404	In the RS485-LN, we should use this command AT+COMMAND1=01 03 0B B8 00 02,1 for the same.
2.2	405
	406
	407	AT+DATACUTx : This command defines how to handle the return from AT+COMMANDx, max return length is 45 bytes.
	408
35.2	409	(% border="1" style="background-color:#4bacc6; color:white; width:725px" %)
	410	\|(% style="width:722px" %)(((
2.2	411	AT+DATACUTx=a,b,c
	412
	413	* a: length for the return of AT+COMMAND
	414	* b:1: grab valid value by byte, max 6 bytes. 2: grab valid value by bytes section, max 3 sections.
35.5	415	* c: define the position for valid value.
2.2	416	)))
	417
35.2	418	Examples:
	419
2.2	420	* Grab bytes:
	421
57.19	422	[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/image-20220602153621-1.png?rev=1.1\|\|alt="image-20220602153621-1.png"]]
2.2	423
35.2	424
2.2	425	* Grab a section.
	426
57.19	427	[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/image-20220602153621-2.png?rev=1.1\|\|alt="image-20220602153621-2.png"]]
2.2	428
35.2	429
2.2	430	* Grab different sections.
	431
57.19	432	[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/image-20220602153621-3.png?rev=1.1\|\|alt="image-20220602153621-3.png"]]
35.3	433
	434
35.2	435	)))
2.2	436
29.2	437	=== 3.3.4 Compose the uplink payload ===
2.2	438
29.2	439	(((
2.2	440	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	441
	442
29.2	443	)))
2.2	444
29.2	445	(((
35.5	446	(% style="color:#037691" %)Examples: AT+DATAUP=0
	447
	448
29.2	449	)))
2.2	450
29.2	451	(((
	452	Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)A SIGNLE UPLINK.
	453	)))
2.2	454
29.2	455	(((
2.2	456	Final Payload is
29.2	457	)))
2.2	458
29.2	459	(((
	460	(% style="color:#4f81bd" %)Battery Info+PAYVER + VALID Value from RETURN1 + Valid Value from RETURN2 + … + RETURNx
	461	)))
2.2	462
29.2	463	(((
2.2	464	Where PAYVER is defined by AT+PAYVER, below is an example screen shot.
29.2	465	)))
2.2	466
57.19	467	[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/1653269759169-150.png?width=716&height=513&rev=1.1\|\|alt="1653269759169-150.png" height="513" width="716"]]
2.2	468
35.5	469
35.6	470	(% style="color:#037691" %)Examples: AT+DATAUP=1
2.2	471
35.5	472
30.2	473	Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)Multiply UPLINKs.
2.2	474
	475	Final Payload is
	476
30.2	477	(% style="color:#4f81bd" %)Battery Info+PAYVER + PAYLOAD COUNT + PAYLOAD# + DATA
2.2	478
57.16	479
36.2	480	1. PAYVER: Defined by AT+PAYVER
	481	1. PAYLOAD COUNT: Total how many uplinks of this sampling.
	482	1. PAYLOAD#: Number of this uplink. (from 0,1,2,3…,to PAYLOAD COUNT)
	483	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	484
57.19	485	[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/image-20220602155039-4.png?rev=1.1\|\|alt="image-20220602155039-4.png"]]
2.2	486
	487
36.2	488	So totally there will be 3 uplinks for this sampling, each uplink include 8 bytes DATA
2.2	489
36.2	490	DATA1=RETURN1 Valid Value + the first two of Valid value of RETURN10= 20 20 0a 33 90 41 02 aa
2.2	491
36.2	492	DATA2=3^^rd^^ ~~ 10^^th^^ byte of Valid value of RETURN10= 05 81 0a 20 20 20 20 2d
2.2	493
36.2	494	DATA3=the rest of Valid value of RETURN10= 30
2.2	495
36.2	496
	497	(% 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:
	498
	499	~* For AU915/AS923 bands, if UplinkDwell time=0, max 51 bytes for each uplink.
	500
	501	* For AU915/AS923 bands, if UplinkDwell time=0, max 11 bytes for each uplink.
	502
	503	* For US915 band, max 11 bytes for each uplink.
	504
	505	~* For all other bands: max 51 bytes for each uplink.
	506
	507
2.2	508	Below are the uplink payloads:
	509
57.19	510	[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/1654157178836-407.png?rev=1.1\|\|alt="1654157178836-407.png"]]
2.2	511
	512
31.3	513	=== 3.3.5 Uplink on demand ===
2.2	514
37.4	515	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	516
	517	Downlink control command:
	518
37.4	519	0x08 command: Poll an uplink with current command set in RS485-LN.
2.2	520
37.4	521	0xA8 command: Send a command to RS485-LN and uplink the output from sensors.
2.2	522
	523
	524
38.2	525	=== 3.3.6 Uplink on Interrupt ===
2.2	526
38.2	527	RS485-LN support external Interrupt uplink since hardware v1.2 release.
2.2	528
57.19	529	[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/1654157342174-798.png?rev=1.1\|\|alt="1654157342174-798.png"]]
2.2	530
38.2	531	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	532
	533
38.4	534	== 3.4 Uplink Payload ==
2.2	535
38.4	536	(% border="1" style="background-color:#4bacc6; color:white; width:734px" %)
	537	\|Size(bytes)\|(% style="width:120px" %)2\|(% style="width:116px" %)1\|(% style="width:386px" %)Length depends on the return from the commands
	538	\|Value\|(% style="width:120px" %)(((
2.2	539	Battery(mV)
	540
	541	&
	542
	543	Interrupt _Flag
38.4	544	)))\|(% style="width:116px" %)(((
2.2	545	PAYLOAD_VER
	546
	547
38.4	548	)))\|(% 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	549
	550	Below is the decoder for the first 3 bytes. The rest bytes are dynamic depends on different RS485 sensors.
	551
	552
38.4	553	== 3.5 Configure RS485-BL via AT or Downlink ==
2.2	554
38.4	555	User can configure RS485-LN via AT Commands or LoRaWAN Downlink Commands
2.2	556
38.4	557	There are two kinds of Commands:
2.2	558
57.19	559	* (% 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>>path:/xwiki/bin/view/Main/End%20Device%20AT%20Commands%20and%20Downlink%20Command/]]
2.2	560
38.4	561	* (% style="color:#4f81bd" %)Sensor Related Commands(%%): These commands are special designed for RS485-LN. User can see these commands below:
2.2	562
57.17	563
38.4	564	=== 3.5.1 Common Commands ===
2.2	565
57.19	566	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>>path:/xwiki/bin/view/Main/End%20Device%20AT%20Commands%20and%20Downlink%20Command/]]
2.2	567
	568
41.1	569	=== 3.5.2 Sensor related commands ===
2.2	570
41.1	571	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	572
57.19	573	[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/image-20220602163333-5.png?width=1160&height=263&rev=1.1\|\|alt="image-20220602163333-5.png" height="263" width="1160"]]
2.2	574
41.1	575	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	576
	577
42.2	578	=== 3.5.3 Sensor related commands ===
2.2	579
	580
57.6	581
42.2	582	==== RS485 Debug Command ====
	583
	584	This command is used to configure the RS485 devices; they won’t be used during sampling.
	585
	586	* AT Command
	587
	588	(% class="box infomessage" %)
	589	(((
	590	AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
	591	)))
	592
	593	m: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
	594
	595	* Downlink Payload
	596
	597	Format: A8 MM NN XX XX XX XX YY
	598
	599	Where:
	600
	601	* MM: 1: add CRC-16/MODBUS ; 0: no CRC
	602	* NN: The length of RS485 command
	603	* XX XX XX XX: RS485 command total NN bytes
	604	* YY: How many bytes will be uplink from the return of this RS485 command,
	605	** if YY=0, RS485-LN will execute the downlink command without uplink;
	606	** if YY>0, RS485-LN will uplink total YY bytes from the output of this RS485 command; Fport=200
	607	** if YY=FF, RS485-LN will uplink RS485 output with the downlink command content; Fport=200.
	608
	609	Example 1 ~-~-> Configure without ask for uplink (YY=0)
	610
	611	To connect a Modbus Alarm with below commands.
	612
	613	* 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.
	614
	615	* 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.
	616
	617	So if user want to use downlink command to control to RS485 Alarm, he can use:
	618
	619	(% style="color:#4f81bd" %)A8 01 06 0A 05 00 04 00 01 00(%%): to activate the RS485 Alarm
	620
	621	(% style="color:#4f81bd" %)A8 01 06 0A 05 00 04 00 00 00(%%): to deactivate the RS485 Alarm
	622
	623	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.
	624
	625
	626	Example 2 ~-~-> Configure with requesting uplink and original downlink command (YY=FF)
	627
	628	User in IoT server send a downlink command: (% style="color:#4f81bd" %)A8 01 06 0A 08 00 04 00 01 YY
	629
	630
	631	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:
	632
	633	A8 (% style="color:#4f81bd" %)0A 08 00 04 00 (% style="color:red" %)01 06 (% style="color:green" %)0A 08 00 04 00 00
	634
57.19	635	[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/1654159460680-153.png?rev=1.1\|\|alt="1654159460680-153.png"]]
42.2	636
42.3	637
	638
	639	==== Set Payload version ====
	640
	641	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.
	642
	643	* AT Command:
	644
	645	(% class="box infomessage" %)
	646	(((
	647	AT+PAYVER: Set PAYVER field = 1
	648	)))
	649
	650	* Downlink Payload:
	651
	652	0xAE 01 ~-~-> Set PAYVER field = 0x01
	653
	654	0xAE 0F ~-~-> Set PAYVER field = 0x0F
	655
	656
	657
	658	==== Set RS485 Sampling Commands ====
	659
44.2	660	AT+COMMANDx or AT+DATACUTx
42.3	661
57.19	662	These three commands are used to configure how the RS485-LN polling data from Modbus device. Detail of usage please see : [[polling RS485 device>>path:#H3.3.3Configurereadcommandsforeachsampling]].
42.3	663
	664
	665	* AT Command:
	666
	667	(% class="box infomessage" %)
	668	(((
	669	AT+COMMANDx: Configure RS485 read command to sensor.
	670	)))
	671
	672	(% class="box infomessage" %)
	673	(((
	674	AT+DATACUTx: Configure how to handle return from RS485 devices.
	675	)))
	676
	677
	678	* Downlink Payload:
	679
	680	0xAF downlink command can be used to set AT+COMMANDx or AT+DATACUTx.
	681
	682	(% style="color:red" %)Note(%%): if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.
	683
	684	Format: AF MM NN LL XX XX XX XX YY
	685
	686	Where:
	687
	688	* MM: the ATCOMMAND or AT+DATACUT to be set. Value from 01 ~~ 0F,
	689	* NN: 0: no CRC; 1: add CRC-16/MODBUS ; 2: set the AT+DATACUT value.
	690	* LL: The length of AT+COMMAND or AT+DATACUT command
	691	* XX XX XX XX: AT+COMMAND or AT+DATACUT command
44.2	692	* 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	693
	694	Example:
	695
	696	(% 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
	697
	698	(% 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
	699
	700	(% 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
	701
	702
	703
	704	==== Fast command to handle MODBUS device ====
	705
	706	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]].
	707
	708	This command is valid since v1.3 firmware version
	709
44.2	710	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	711
	712
	713	Example:
	714
44.2	715	* AT+MBFUN=1 and AT+DATACUT1/AT+DATACUT2 are not configure (0,0,0). So RS485-LN.
42.3	716	* 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.
	717	* 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.
	718
57.19	719	[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/image-20220602165351-6.png?rev=1.1\|\|alt="image-20220602165351-6.png"]]
42.3	720
57.19	721	[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/image-20220602165351-7.png?rev=1.1\|\|alt="image-20220602165351-7.png"]]
42.3	722
	723
	724
	725	==== RS485 command timeout ====
	726
44.3	727	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	728
44.3	729	Default value: 0, range: 0 ~~ 65 seconds
42.3	730
	731	* AT Command:
	732
	733	(% class="box infomessage" %)
	734	(((
44.3	735	*AT+CMDDLaa=hex(bb cc)1000**
42.3	736	)))
	737
	738	Example:
	739
	740	AT+CMDDL1=1000 to send the open time to 1000ms
	741
	742
	743	* Downlink Payload:
	744
44.3	745	0x AA aa bb cc
42.3	746
44.3	747	Same as: AT+CMDDLaa=hex(bb cc)*1000
42.3	748
	749	Example:
	750
44.3	751	0xAA 01 00 01 ~-~-> Same as AT+CMDDL1=1000 ms
42.3	752
	753
	754
	755	==== Uplink payload mode ====
	756
	757	Define to use one uplink or multiple uplinks for the sampling.
	758
57.19	759	The use of this command please see: [[Compose Uplink payload>>path:#H3.3.4Composetheuplinkpayload]]
42.3	760
	761	* AT Command:
	762
	763	(% class="box infomessage" %)
	764	(((
	765	AT+DATAUP=0
	766	)))
	767
	768	(% class="box infomessage" %)
	769	(((
	770	AT+DATAUP=1
	771	)))
	772
	773
	774	* Downlink Payload:
	775
	776	0xAD 00 ~-~-> Same as AT+DATAUP=0
	777
	778	0xAD 01 ~-~-> Same as AT+DATAUP=1
	779
	780
	781
	782	==== Manually trigger an Uplink ====
	783
	784	Ask device to send an uplink immediately.
	785
45.2	786	* AT Command:
	787
57.19	788	No AT Command for this, user can press the (% class="wikiinternallink" %)[[ACT button>>path:#Button]](%%) for 1 second for the same.
45.2	789
	790
42.3	791	* Downlink Payload:
	792
45.2	793	0x08 FF, RS485-LN will immediately send an uplink.
42.3	794
	795
	796
	797	==== Clear RS485 Command ====
	798
	799	The AT+COMMANDx and AT+DATACUTx settings are stored in special location, user can use below command to clear them.
	800
	801	* AT Command:
	802
45.2	803	AT+CMDEAR=mm,nn mm: start position of erase ,nn: stop position of erase
	804
	805	Etc. AT+CMDEAR=1,10 means erase AT+COMMAND1/AT+DATACUT1 to AT+COMMAND10/AT+DATACUT10
	806
47.2	807	Example screen shot after clear all RS485 commands.
45.2	808
	809
	810	The uplink screen shot is:
	811
57.19	812	[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/1654160691922-496.png?rev=1.1\|\|alt="1654160691922-496.png"]][[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image001.png\|\|alt="file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image001.png"]]
45.2	813
	814
45.3	815	* Downlink Payload:
45.2	816
45.3	817	0x09 aa bb same as AT+CMDEAR=aa,bb
45.2	818
	819
45.3	820
42.3	821	==== Set Serial Communication Parameters ====
	822
	823	Set the Rs485 serial communication parameters:
	824
	825	* AT Command:
	826
	827	Set Baud Rate:
	828
	829	(% class="box infomessage" %)
	830	(((
	831	AT+BAUDR=9600 ~/~/ Options: (1200,2400,4800,14400,19200,115200)
	832	)))
	833
	834	Set UART Parity
	835
	836	(% class="box infomessage" %)
	837	(((
	838	AT+PARITY=0 ~/~/ Option: 0: no parity, 1: odd parity, 2: even parity
	839	)))
	840
	841	Set STOPBIT
	842
	843	(% class="box infomessage" %)
	844	(((
	845	AT+STOPBIT=0 ~/~/ Option: 0 for 1bit; 1 for 1.5 bit ; 2 for 2 bits
	846	)))
	847
	848
	849	* Downlink Payload:
	850
	851	A7 01 aa bb: Same AT+BAUDR=hex(aa bb)*100
	852
	853	Example:
	854
	855	* A7 01 00 60 same as AT+BAUDR=9600
	856	* A7 01 04 80 same as AT+BAUDR=115200
	857
	858	A7 02 aa: Same as AT+PARITY=aa (aa value: 00 , 01 or 02)
	859
	860	A7 03 aa: Same as AT+STOPBIT=aa (aa value: 00 , 01 or 02)
	861
	862
47.2	863	== 3.6 Listening mode for RS485 network ==
42.3	864
47.2	865	This feature support since firmware v1.4
	866
	867	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.
	868
57.19	869	[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/image-20220602171200-8.png?width=1007&height=567&rev=1.1\|\|alt="image-20220602171200-8.png" height="567" width="1007"]]
47.2	870
	871	To enable the listening mode, use can run the command AT+RXMODE.
	872
	873
	874	(% border="1" style="background-color:#ffffcc; width:500px" %)
	875	\|=(% style="width: 161px;" %)Command example:\|=(% style="width: 337px;" %)Function
	876	\|(% 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.
	877	\|(% 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
	878	\|(% style="width:161px" %)AT+RXMODE=0,0\|(% style="width:337px" %)Disable listening mode. This is the default settings.
	879	\|(% style="width:161px" %) \|(% style="width:337px" %)A6 aa bb cc same as AT+RXMODE=aa,(bb<<8 ~\| cc)
	880
	881	Downlink Command:
	882
	883	0xA6 aa bb cc same as AT+RXMODE=aa,(bb<<8 \| cc)
	884
	885
	886	Example:
	887
	888	The RS485-LN is set to AT+RXMODE=2,1000
	889
	890	There is a two Modbus commands in the RS485 network as below:
	891
	892	The Modbus master send a command: (% style="background-color:#ffc000" %)01 03 00 00 00 02 c4 0b
	893
	894	And Modbus slave reply with: (% style="background-color:green" %)01 03 04 00 00 00 00 fa 33
	895
	896	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
	897
57.19	898	[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/image-20220602171200-9.png?rev=1.1\|\|alt="image-20220602171200-9.png"]]
47.2	899
	900
47.3	901	(% 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	902
	903
47.3	904	== 3.7 Buttons ==
	905
	906
	907	(% border="1" style="background-color:#f7faff; width:500px" %)
	908	\|=Button\|=(% style="width: 1420px;" %)Feature
	909	\|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
	910	\|RST\|(% style="width:1420px" %)Reboot RS485
57.19	911	\|PRO\|(% style="width:1420px" %)Use for upload image, see (% class="wikiinternallink" %)[[How to Update Image>>path:#upgrade_image]]
47.3	912
	913	== 3.8 LEDs ==
	914
	915	(% border="1" style="background-color:#f7faff; width:500px" %)
	916	\|=LEDs\|=Feature
	917	\|PWR\|Always on if there is power
	918	\|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
	920	= 4. Case Study =
	921
57.19	922	User can check this URL for some case studies: [[APP RS485 COMMUNICATE WITH SENSORS>>path:/xwiki/bin/view/Main/Application%20Note%20%3A%20Communicate%20with%20Different%20Sensors%20-----%20RS485-LN%20%20RS485-BL/]]
47.3	923
	924
	925	= 5. Use AT Command =
	926
	927	== 5.1 Access AT Command ==
	928
	929	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.
	930
57.19	931	[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/1654162355560-817.png?rev=1.1\|\|alt="1654162355560-817.png"]]
47.3	932
	933
	934	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:
	935
57.19	936	[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/1654162368066-342.png?rev=1.1\|\|alt="1654162368066-342.png"]]
47.3	937
	938
57.19	939	More detail AT Command manual can be found at [[AT Command Manual>>path:#3.5ConfigureRS485-BLviaATorDownlink]]
47.3	940
	941
	942	== 5.2 Common AT Command Sequence ==
	943
	944	=== 5.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
	945
	946	If device has not joined network yet:
	947
	948	(% class="box infomessage" %)
	949	(((
	950	AT+FDR
	951	)))
	952
	953	(% class="box infomessage" %)
	954	(((
	955	AT+NJM=0
	956	)))
	957
	958	(% class="box infomessage" %)
	959	(((
	960	ATZ
	961	)))
	962
	963
	964	If device already joined network:
	965
	966	(% class="box infomessage" %)
	967	(((
	968	AT+NJM=0
	969	)))
	970
	971	(% class="box infomessage" %)
	972	(((
	973	ATZ
	974	)))
	975
	976
	977	=== 5.5.2 Single-channel ABP mode (Use with LG01/LG02) ===
	978
	979
49.3	980	(% style="background-color:#dcdcdc" %)AT+FDR (%%) Reset Parameters to Factory Default, Keys Reserve
47.3	981
	982	(% style="background-color:#dcdcdc" %)AT+NJM=0 (%%)Set to ABP mode
	983
	984	(% style="background-color:#dcdcdc" %)AT+ADR=0 (%%)Set the Adaptive Data Rate Off
	985
51.3	986	(% style="background-color:#dcdcdc" %)AT+DR=5 (%%)Set Data Rate
47.3	987
	988	(% style="background-color:#dcdcdc" %)AT+TDC=60000 (%%) Set transmit interval to 60 seconds
	989
	990	(% style="background-color:#dcdcdc" %)AT+CHS=868400000(%%) Set transmit frequency to 868.4Mhz
	991
	992	(% style="background-color:#dcdcdc" %)AT+RX2FQ=868400000 (%%) Set RX2Frequency to 868.4Mhz (according to the result from server)
	993
	994	(% style="background-color:#dcdcdc" %)AT+RX2DR=5 (%%) Set RX2DR to match the downlink DR from server. see below
	995
	996	(% 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.
	997
	998	(% style="background-color:#dcdcdc" %)ATZ (%%) Reset MCU
	999
	1000
	1001	(% style="color:red" %)Note:
	1002
	1003	(% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server.
	1004	2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
	1005	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.
	1006	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
	1007
57.19	1008	[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/1654162478620-421.png?rev=1.1\|\|alt="1654162478620-421.png"]]
47.3	1009
	1010
	1011	= 6. FAQ =
	1012
	1013	== 6.1 How to upgrade the image? ==
	1014
51.2	1015	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	1016
	1017	* Support new features
	1018	* For bug fix
	1019	* Change LoRaWAN bands.
	1020
51.2	1021	Below shows the hardware connection for how to upload an image to RS485-LN:
47.3	1022
57.19	1023	[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/1654162535040-878.png?rev=1.1\|\|alt="1654162535040-878.png"]]
47.3	1024
	1025	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]].
	1026
	1027	Step2: Download the [[LT Image files>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]].
	1028
	1029	Step3: Open flashloader; choose the correct COM port to update.
	1030
52.2	1031	(% 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	1032
47.3	1033
57.19	1034	[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/image-20220602175818-12.png?rev=1.1\|\|alt="image-20220602175818-12.png"]]
47.3	1035
	1036
57.19	1037	[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/image-20220602175848-13.png?rev=1.1\|\|alt="image-20220602175848-13.png"]]
47.3	1038
	1039
57.19	1040	[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/image-20220602175912-14.png?rev=1.1\|\|alt="image-20220602175912-14.png"]]
56.2	1041
56.4	1042
52.2	1043	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	1044
57.19	1045	[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/image-20220602175638-10.png?rev=1.1\|\|alt="image-20220602175638-10.png"]]
52.2	1046
	1047
47.3	1048	== 6.2 How to change the LoRa Frequency Bands/Region? ==
	1049
57.19	1050	User can follow the introduction for [[how to upgrade image>>path:#H6.1Howtoupgradetheimage3F]]. When download the images, choose the required image file for download.
47.3	1051
	1052
	1053	== 6.3 How many RS485-Slave can RS485-BL connects? ==
	1054
57.19	1055	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:#H3.3.3Configurereadcommandsforeachsampling]].
47.3	1056
	1057
51.4	1058	== 6.4 Compatible question to ChirpStack and TTI LoRaWAN server ? ==
47.3	1059
51.4	1060	When user need to use with ChirpStack or TTI. Please set AT+RPL=4.
	1061
57.19	1062	Detail info check this link: [[Set Packet Receiving Response Level>>path:/xwiki/bin/view/Main/End%20Device%20AT%20Commands%20and%20Downlink%20Command/#H7.23SetPacketReceivingResponseLevel]]
51.4	1063
	1064
47.3	1065	= 7. Trouble Shooting =
	1066
	1067	== 7.1 Downlink doesn’t work, how to solve it? ==
	1068
57.19	1069	Please see this link for debug: [[LoRaWAN Communication Debug>>path:/xwiki/bin/view/Main/LoRaWAN%20Communication%20Debug/]]
47.3	1070
	1071
	1072	== 7.2 Why I can’t join TTN V3 in US915 /AU915 bands? ==
	1073
57.19	1074	It might about the channels mapping. Please see for detail: [[Notice of Frequency band>>path:/xwiki/bin/view/Main/LoRaWAN%20Communication%20Debug/#H2.NoticeofUS9152FCN4702FAU915Frequencyband]]
47.3	1075
	1076
	1077	= 8. Order Info =
	1078
51.8	1079	(% style="color:blue" %)Part Number: RS485-LN-XXX
47.3	1080
	1081	(% style="color:blue" %)XXX:
	1082
	1083	* (% style="color:blue" %)EU433(%%): frequency bands EU433
	1084	* (% style="color:blue" %)EU868(%%): frequency bands EU868
	1085	* (% style="color:blue" %)KR920(%%): frequency bands KR920
	1086	* (% style="color:blue" %)CN470(%%): frequency bands CN470
	1087	* (% style="color:blue" %)AS923(%%): frequency bands AS923
	1088	* (% style="color:blue" %)AU915(%%): frequency bands AU915
	1089	* (% style="color:blue" %)US915(%%): frequency bands US915
	1090	* (% style="color:blue" %)IN865(%%): frequency bands IN865
	1091	* (% style="color:blue" %)RU864(%%): frequency bands RU864
	1092	* (% style="color:blue" %)KZ865(%%): frequency bands KZ865
	1093
51.8	1094	= 9.Packing Info =
	1095
	1096
	1097	Package Includes:
	1098
	1099	* RS485-LN x 1
	1100	* Stick Antenna for LoRa RF part x 1
	1101	* Program cable x 1
	1102
	1103	Dimension and weight:
	1104
	1105	* Device Size: 13.5 x 7 x 3 cm
	1106	* Device Weight: 105g
	1107	* Package Size / pcs : 14.5 x 8 x 5 cm
	1108	* Weight / pcs : 170g
	1109
	1110	= 10. FCC Caution for RS485LN-US915 =
	1111
	1112	Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
	1113
	1114	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.
	1115
	1116
	1117	IMPORTANT NOTE:
	1118
	1119	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:
	1120
	1121	—Reorient or relocate the receiving antenna.
	1122
	1123	—Increase the separation between the equipment and receiver.
	1124
	1125	—Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
	1126
	1127	—Consult the dealer or an experienced radio/TV technician for help.
	1128
	1129
	1130	FCC Radiation Exposure Statement:
	1131
	1132	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.
	1133
	1134
	1135	= 11. Support =
	1136
	1137	* 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.
	1138	* 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]].

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