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Version 60.10 by Xiaoling on 2022/06/14 11:19
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15 **Table of Contents:**
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25
26 * [[1.Introduction>>doc:null||anchor="H1.Introduction"]]
27 ** [[1.1 What is RS485-LN RS485 to LoRaWAN Converter>>doc:null||anchor="H1.1A0WhatisRS485-LNRS485toLoRaWANConverter"]]
28 ** [[1.2 Specifications>>doc:null||anchor="H1.2A0Specifications"]]
29 ** [[1.3 Features>>doc:null||anchor="H1.3Features"]]
30 ** [[1.4 Applications>>doc:null||anchor="H1.4A0Applications"]]
31 ** [[1.5 Firmware Change log>>doc:null||anchor="H1.5A0FirmwareChangelog"]]
32 ** [[1.6 Hardware Change log>>doc:null||anchor="H1.6HardwareChangelog"]]
33 * [[2. Power ON Device>>doc:null||anchor="H2.PowerONDevice"]]
34 * [[3. Operation Mode>>doc:null||anchor="H3.A0OperationMode"]]
35 ** [[3.1 How it works?>>doc:null||anchor="H3.1Howitworks3F"]]
36 ** [[3.2 Example to join LoRaWAN network>>doc:null||anchor="H3.2ExampletojoinLoRaWANnetwork"]]
37 ** [[3.3 Configure Commands to read data>>doc:null||anchor="H3.3ConfigureCommandstoreaddata"]]
38 *** [[3.3.1 onfigure UART settings for RS485 or TTL communication>>doc:null||anchor="H3.3.1onfigureUARTsettingsforRS485orTTLcommunication"]]
39 *** [[3.3.2 Configure sensors>>doc:null||anchor="H3.3.2Configuresensors"]]
40 *** [[3.3.3 Configure read commands for each sampling>>doc:null||anchor="H3.3.3Configurereadcommandsforeachsampling"]]
41 *** [[3.3.4 Compose the uplink payload>>doc:null||anchor="H3.3.4Composetheuplinkpayload"]]
42 *** [[3.3.5 Uplink on demand>>doc:null||anchor="H3.3.5Uplinkondemand"]]
43 *** [[3.3.6 Uplink on Interrupt>>doc:null||anchor="H3.3.6UplinkonInterrupt"]]
44 ** [[3.4 Uplink Payload>>doc:null||anchor="H3.4UplinkPayload"]]
45 ** [[3.5 Configure RS485-BL via AT or Downlink>>doc:null||anchor="H3.5ConfigureRS485-BLviaATorDownlink"]]
46 *** [[3.5.1 Common Commands>>doc:null||anchor="H3.5.1CommonCommands"]]
47 *** [[3.5.2 Sensor related commands>>doc:null||anchor="H3.5.2Sensorrelatedcommands"]]
48 *** [[3.5.3 Sensor related commands>>doc:null||anchor="H3.5.3A0Sensorrelatedcommands"]]
49 **** [[RS485 Debug Command>>doc:null||anchor="HRS485DebugCommand"]]
50 **** [[Set Payload version>>doc:null||anchor="HSetPayloadversion"]]
51 **** [[Set RS485 Sampling Commands>>doc:null||anchor="HSetRS485SamplingCommands"]]
52 **** [[Fast command to handle MODBUS device>>doc:null||anchor="HFastcommandtohandleMODBUSdevice"]]
53 **** [[RS485 command timeout>>doc:null||anchor="HRS485commandtimeout"]]
54 **** [[Uplink payload mode>>doc:null||anchor="HUplinkpayloadmode"]]
55 **** [[Manually trigger an Uplink>>doc:null||anchor="HManuallytriggeranUplink"]]
56 **** [[Clear RS485 Command>>doc:null||anchor="HClearRS485Command"]]
57 **** [[Set Serial Communication Parameters>>doc:null||anchor="HSetSerialCommunicationParameters"]]
58 ** [[3.6 Listening mode for RS485 network>>doc:null||anchor="H3.6A0ListeningmodeforRS485network"]]
59 ** [[3.7 Buttons>>doc:null||anchor="H3.7Buttons"]]
60 ** [[3.8 LEDs>>doc:null||anchor="H3.8LEDs"]]
61 * [[4. Case Study>>doc:null||anchor="H4.CaseStudy"]]
62 * [[5. Use AT Command>>doc:null||anchor="H5.UseATCommand"]]
63 ** [[5.1 Access AT Command>>doc:null||anchor="H5.1AccessATCommand"]]
64 ** [[5.2 Common AT Command Sequence>>doc:null||anchor="H5.2CommonATCommandSequence"]]
65 *** [[5.2.1 Multi-channel ABP mode (Use with SX1301/LG308)>>doc:null||anchor="H5.2.1Multi-channelABPmode28UsewithSX13012FLG30829"]]
66 *** [[5.5.2 Single-channel ABP mode (Use with LG01/LG02)>>doc:null||anchor="H5.5.2Single-channelABPmode28UsewithLG012FLG0229"]]
67 * [[6. FAQ>>doc:null||anchor="H6.FAQ"]]
68 ** [[6.1 How to upgrade the image?>>doc:null||anchor="H6.1Howtoupgradetheimage3F"]]
69 ** [[6.2 How to change the LoRa Frequency Bands/Region?>>doc:null||anchor="H6.2HowtochangetheLoRaFrequencyBands2FRegion3F"]]
70 ** [[6.3 How many RS485-Slave can RS485-BL connects?>>doc:null||anchor="H6.3HowmanyRS485-SlavecanRS485-BLconnects3F"]]
71 ** [[6.4 Compatible question to ChirpStack and TTI LoRaWAN server ?>>doc:null||anchor="H6.4CompatiblequestiontoChirpStackandTTILoRaWANserver3F"]]
72 * [[7. Trouble Shooting>>doc:null||anchor="H7.TroubleShooting"]]
73 ** [[7.1 Downlink doesn’t work, how to solve it?>>doc:null||anchor="H7.1Downlinkdoesn2019twork2Chowtosolveit3F"]]
74 ** [[7.2 Why I can’t join TTN V3 in US915 /AU915 bands?>>doc:null||anchor="H7.2WhyIcan2019tjoinTTNV3inUS9152FAU915bands3F"]]
75 * [[8. Order Info>>doc:null||anchor="H8.OrderInfo"]]
76 * [[9.Packing Info>>doc:null||anchor="H9.PackingInfo"]]
77 * [[10. FCC Caution for RS485LN-US915>>doc:null||anchor="H10.FCCCautionforRS485LN-US915"]]
78 * [[11. Support>>doc:null||anchor="H11.Support"]]
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81 (% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||height="15" role="presentation" title="Click and drag to move" width="15"]]
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89
90 = 1.Introduction =
91
92 == 1.1 What is RS485-LN RS485 to LoRaWAN Converter ==
93
94 (((
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98
99 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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105 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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111 (% 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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117 (% style="color:blue" %)**For data downlink**(%%), RS485-LN runs in LoRaWAN Class C. When there downlink commands from LoRaWAN server, RS485-LN will forward the commands from LoRaWAN server to RS485 devices.
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121 (% 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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128 (% 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://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
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130
131 == 1.2 Specifications ==
132
133
134 **Hardware System:**
135
136 * STM32L072CZT6 MCU
137 * SX1276/78 Wireless Chip 
138 * Power Consumption (exclude RS485 device):
139 ** Idle: 32mA@12v
140 ** 20dB Transmit: 65mA@12v
141
142
143 **Interface for Model:**
144
145 * RS485
146 * Power Input 7~~ 24V DC. 
147
148
149 **LoRa Spec:**
150
151 * Frequency Range:
152 ** Band 1 (HF): 862 ~~ 1020 Mhz
153 ** Band 2 (LF): 410 ~~ 528 Mhz
154 * 168 dB maximum link budget.
155 * +20 dBm - 100 mW constant RF output vs.
156 * +14 dBm high efficiency PA.
157 * Programmable bit rate up to 300 kbps.
158 * High sensitivity: down to -148 dBm.
159 * Bullet-proof front end: IIP3 = -12.5 dBm.
160 * Excellent blocking immunity.
161 * Low RX current of 10.3 mA, 200 nA register retention.
162 * Fully integrated synthesizer with a resolution of 61 Hz.
163 * FSK, GFSK, MSK, GMSK, LoRaTM and OOK modulation.
164 * Built-in bit synchronizer for clock recovery.
165 * Preamble detection.
166 * 127 dB Dynamic Range RSSI.
167 * Automatic RF Sense and CAD with ultra-fast AFC.
168 * Packet engine up to 256 bytes with CRC
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170
171
172 == 1.3 Features ==
173
174 * LoRaWAN Class A & Class C protocol (default Class C)
175 * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865/RU864
176 * AT Commands to change parameters
177 * Remote configure parameters via LoRa Downlink
178 * Firmware upgradable via program port
179 * Support multiply RS485 devices by flexible rules
180 * Support Modbus protocol
181 * Support Interrupt uplink (Since hardware version v1.2)
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183
184
185 == 1.4 Applications ==
186
187 * Smart Buildings & Home Automation
188 * Logistics and Supply Chain Management
189 * Smart Metering
190 * Smart Agriculture
191 * Smart Cities
192 * Smart Factory
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194
195
196 == 1.5 Firmware Change log ==
197
198 [[RS485-LN Image files – Download link and Change log>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/]]
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200
201 == 1.6 Hardware Change log ==
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206 v1.2: Add External Interrupt Pin.
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210 v1.0: Release
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216
217 = 2. Power ON Device =
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220 The RS485-LN can be powered by 7 ~~ 24V DC power source. Connection as below
221
222 * Power Source VIN to RS485-LN VIN+
223 * Power Source GND to RS485-LN VIN-
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226 Once there is power, the RS485-LN will be on.
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229 (% 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://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
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234 = 3. Operation Mode =
235
236 == 3.1 How it works? ==
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240 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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245
246 == 3.2 Example to join LoRaWAN network ==
247
248 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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250 (% 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://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
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255 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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259 485A+ and 485B- of the sensor are connected to RS485A and RA485B of RS485-LN respectively.
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262 (% 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://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
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266 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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270 (% style="color:blue" %)**Step 1**(%%): Create a device in TTN V3 with the OTAA keys from RS485-LN.
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274 Each RS485-LN is shipped with a sticker with unique device EUI:
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278 (% 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://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
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283 User can enter this key in their LoRaWAN Server portal. Below is TTN V3 screen shot:
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287 **Add APP EUI in the application.**
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291 (% aria-label="image-20220519174512-1.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220519174512-1.png||data-widget="image"]](% style="background:url(~"http://wiki.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" %)​
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293 (% 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:url(~"http://wiki.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" %)​
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295 (% 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:url(~"http://wiki.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" %)​
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297 (% aria-label="image-20220519174512-4.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220519174512-4.png||data-widget="image"]](% style="background:url(~"http://wiki.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" %)​
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299 You can also choose to create the device manually.
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301 (% 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:url(~"http://wiki.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" %)​
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304
305 **Add APP KEY and DEV EUI**
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307 (% 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:url(~"http://wiki.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" %)​
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310 (((
311 (% style="color:blue" %)**Step 2**(%%): Power on RS485-LN and it will auto join to the TTN V3 network. After join success, it will start to upload message to TTN V3 and user can see in the panel.
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314 (% 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:url(~"http://wiki.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" %)​
315
316
317 == 3.3 Configure Commands to read data ==
318
319 (((
320 (((
321 (((
322 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.
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327 (((
328 (% 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
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334
335 === 3.3.1 onfigure UART settings for RS485 or TTL communication ===
336
337 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:
338
339 (% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
340 |=(% style="width: 110px;" %)(((
341 **AT Commands**
342 )))|=(% style="width: 190px;" %)(((
343 **Description**
344 )))|=(% style="width: 190px;" %)(((
345 **Example**
346 )))
347 |(% style="width:110px" %)(((
348 AT+BAUDR
349 )))|(% style="width:190px" %)(((
350 Set the baud rate (for RS485 connection). Default Value is: 9600.
351 )))|(% style="width:190px" %)(((
352 (((
353 AT+BAUDR=9600
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355
356 (((
357 Options: (1200,2400,4800,14400,19200,115200)
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359 )))
360 |(% style="width:110px" %)(((
361 AT+PARITY
362 )))|(% style="width:190px" %)(((
363 Set UART parity (for RS485 connection)
364 )))|(% style="width:190px" %)(((
365 (((
366 AT+PARITY=0
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369 (((
370 Option: 0: no parity, 1: odd parity, 2: even parity
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373 |(% style="width:110px" %)(((
374 AT+STOPBIT
375 )))|(% style="width:190px" %)(((
376 (((
377 Set serial stopbit (for RS485 connection)
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379
380 (((
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382 )))
383 )))|(% style="width:190px" %)(((
384 (((
385 AT+STOPBIT=0 for 1bit
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388 (((
389 AT+STOPBIT=1 for 1.5 bit
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392 (((
393 AT+STOPBIT=2 for 2 bits
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397
398
399
400 === 3.3.2 Configure sensors ===
401
402 (((
403 (((
404 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.
405 )))
406 )))
407
408 (% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
409 |=(% style="width: 110px;" %)**AT Commands**|=(% style="width: 190px;" %)**Description**|=(% style="width: 190px;" %)**Example**
410 |AT+CFGDEV|(% style="width:110px" %)(((
411 (((
412 This command is used to configure the RS485/TTL devices; they won’t be used during sampling.
413 )))
414
415 (((
416 AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,
417 )))
418
419 (((
420 mm: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
421 )))
422 )))|(% style="width:190px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
423
424
425
426
427 === 3.3.3 Configure read commands for each sampling ===
428
429 (((
430 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.
431
432 To save the LoRaWAN network bandwidth, we might need to read data from different sensors and combine their valid value into a short payload.
433
434 This section describes how to achieve above goals.
435
436 During each sampling, the RS485-LN can support 15 commands to read sensors. And combine the return to one or several uplink payloads.
437
438
439 **Each RS485 commands include two parts:**
440
441 ~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.
442
443 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.
444
445 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
446
447
448 After we got the valid value from each RS485 commands, we need to combine them together with the command **AT+DATAUP**.
449
450
451 Below are examples for the how above AT Commands works.
452
453
454 **AT+COMMANDx : **This command will be sent to RS485 devices during each sampling, Max command length is 14 bytes. The grammar is:
455
456 (% border="1" style="background-color:#4bacc6; color:white; width:499px" %)
457 |(% style="width:496px" %)(((
458 **AT+COMMANDx=xx xx xx xx xx xx xx xx xx xx xx xx,m**
459
460 **xx xx xx xx xx xx xx xx xx xx xx xx: The RS485 command to be sent**
461
462 **m: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command**
463 )))
464
465 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.
466
467 In the RS485-LN, we should use this command AT+COMMAND1=01 03 0B B8 00 02,1 for the same.
468
469
470 **AT+DATACUTx : **This command defines how to handle the return from AT+COMMANDx, max return length is 45 bytes.
471
472 (% border="1" style="background-color:#4bacc6; color:white; width:510px" %)
473 |(% style="width:510px" %)(((
474 **AT+DATACUTx=a,b,c**
475
476 * **a: length for the return of AT+COMMAND**
477 * **b:1: grab valid value by byte, max 6 bytes. 2: grab valid value by bytes section, max 3 sections.**
478 * **c: define the position for valid value.  **
479 )))
480
481 **Examples:**
482
483 * Grab bytes:
484
485 (% aria-label="image-20220602153621-1.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602153621-1.png||data-widget="image"]](% style="background:url(~"http://wiki.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" %)​
486
487
488 * Grab a section.
489
490 (% aria-label="image-20220602153621-2.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602153621-2.png||data-widget="image"]](% style="background:url(~"http://wiki.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" %)​
491
492
493 * Grab different sections.
494
495 (% aria-label="image-20220602153621-3.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602153621-3.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
496
497
498
499 )))
500
501 === 3.3.4 Compose the uplink payload ===
502
503 (((
504 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.**
505
506
507 )))
508
509 (((
510 (% style="color:#037691" %)**Examples: AT+DATAUP=0**
511
512
513 )))
514
515 (((
516 Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**A SIGNLE UPLINK**.
517 )))
518
519 (((
520 Final Payload is
521 )))
522
523 (((
524 (% style="color:#4f81bd" %)**Battery Info+PAYVER + VALID Value from RETURN1 + Valid Value from RETURN2 + … + RETURNx**
525 )))
526
527 (((
528 Where PAYVER is defined by AT+PAYVER, below is an example screen shot.
529 )))
530
531 (% 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:url(~"http://wiki.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" %)​
532
533
534 (% style="color:#037691" %)**Examples: AT+DATAUP=1**
535
536
537 Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**Multiply UPLINKs**.
538
539 Final Payload is
540
541 (% style="color:#4f81bd" %)**Battery Info+PAYVER + PAYLOAD COUNT + PAYLOAD# + DATA**
542
543
544 1. PAYVER: Defined by AT+PAYVER
545 1. PAYLOAD COUNT: Total how many uplinks of this sampling.
546 1. PAYLOAD#: Number of this uplink. (from 0,1,2,3…,to PAYLOAD COUNT)
547 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
548
549 (% aria-label="image-20220602155039-4.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602155039-4.png||data-widget="image"]](% style="background:url(~"http://wiki.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" %)​
550
551
552 So totally there will be 3 uplinks for this sampling, each uplink include 8 bytes DATA
553
554 DATA1=RETURN1 Valid Value + the first two of Valid value of RETURN10= **20 20 0a 33 90 41 02 aa**
555
556 DATA2=3^^rd^^ ~~ 10^^th^^ byte of Valid value of RETURN10= **05 81 0a 20 20 20 20 2d**
557
558 DATA3=the rest of Valid value of RETURN10= **30**
559
560
561 (% 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:
562
563 ~* For AU915/AS923 bands, if UplinkDwell time=0, max 51 bytes for each uplink.
564
565 * For AU915/AS923 bands, if UplinkDwell time=0, max 11 bytes for each uplink.
566
567 * For US915 band, max 11 bytes for each uplink.
568
569 ~* For all other bands: max 51 bytes for each uplink.
570
571
572 Below are the uplink payloads:
573
574 (% aria-label="1654157178836-407.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1654157178836-407.png||data-widget="image"]](% style="background:url(~"http://wiki.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" %)​
575
576
577 === 3.3.5 Uplink on demand ===
578
579 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.
580
581 Downlink control command:
582
583 **0x08 command**: Poll an uplink with current command set in RS485-LN.
584
585 **0xA8 command**: Send a command to RS485-LN and uplink the output from sensors.
586
587
588
589 === 3.3.6 Uplink on Interrupt ===
590
591 RS485-LN support external Interrupt uplink since hardware v1.2 release.
592
593 (% aria-label="1654157342174-798.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1654157342174-798.png||data-widget="image"]](% style="background:url(~"http://wiki.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" %)​
594
595 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.
596
597
598 == 3.4 Uplink Payload ==
599
600
601 (% aria-label="image-20220606110929-1.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220606110929-1.png||data-widget="image"]](% style="background:url(~"http://wiki.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" %)​
602
603 Below is the decoder for the first 3 bytes. The rest bytes are dynamic depends on different RS485 sensors.
604
605
606 == 3.5 Configure RS485-LN via AT or Downlink ==
607
608 (((
609 User can configure RS485-LN via AT Commands or LoRaWAN Downlink Commands
610 )))
611
612 (((
613 There are two kinds of Commands:
614 )))
615
616 * (((
617 (% 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]]
618 )))
619
620 * (((
621 (% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for RS485-LN.  User can see these commands below:
622 )))
623
624 (((
625
626 )))
627
628
629 === 3.5.1 Common Commands ===
630
631 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]]
632
633
634 === 3.5.2 Sensor related commands ===
635
636 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.
637
638 (% 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:url(~"http://wiki.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" %)​
639
640 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)
641
642
643 === 3.5.3 Sensor related commands ===
644
645
646
647
648 ==== **RS485 Debug Command** ====
649
650 (((
651 This command is used to configure the RS485 devices; they won’t be used during sampling.
652 )))
653
654 * (((
655 **AT Command**
656 )))
657
658 (% class="box infomessage" %)
659 (((
660 (((
661 **AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m**
662 )))
663 )))
664
665 (((
666 m: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
667 )))
668
669 * (((
670 **Downlink Payload**
671 )))
672
673 (((
674 Format: A8 MM NN XX XX XX XX YY
675 )))
676
677 (((
678 Where:
679 )))
680
681 * (((
682 MM: 1: add CRC-16/MODBUS ; 0: no CRC
683 )))
684 * (((
685 NN: The length of RS485 command
686 )))
687 * (((
688 XX XX XX XX: RS485 command total NN bytes
689 )))
690 * (((
691 (((
692 YY: How many bytes will be uplink from the return of this RS485 command,
693 )))
694
695 * (((
696 if YY=0, RS485-LN will execute the downlink command without uplink;
697 )))
698 * (((
699 if YY>0, RS485-LN will uplink total YY bytes from the output of this RS485 command; Fport=200
700 )))
701 * (((
702 if YY=FF, RS485-LN will uplink RS485 output with the downlink command content; Fport=200.
703 )))
704 )))
705
706 (((
707 **Example 1** ~-~-> Configure without ask for uplink (YY=0)
708 )))
709
710 (((
711 To connect a Modbus Alarm with below commands.
712 )))
713
714 * (((
715 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.
716 )))
717
718 * (((
719 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.
720 )))
721
722 (((
723 So if user want to use downlink command to control to RS485 Alarm, he can use:
724 )))
725
726 (((
727 (% style="color:#4f81bd" %)**A8 01 06 0A 05 00 04 00 01 00**(%%): to activate the RS485 Alarm
728 )))
729
730 (((
731 (% style="color:#4f81bd" %)**A8 01 06 0A 05 00 04 00 00 00**(%%): to deactivate the RS485 Alarm
732 )))
733
734 (((
735 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.
736 )))
737
738 (((
739
740 )))
741
742 (((
743 **Example 2** ~-~-> Configure with requesting uplink and original downlink command (**YY=FF**)
744 )))
745
746 (((
747 User in IoT server send a downlink command: (% style="color:#4f81bd" %)**A8 01 06 0A 08 00 04 00 01 YY**
748 )))
749
750 (((
751
752 )))
753
754 (((
755 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:
756 )))
757
758 (((
759 **A8** (% style="color:#4f81bd" %)**0A 08 00 04 00  **(% style="color:red" %)**01 06** ** **(% style="color:green" %)**0A 08 00 04 00 00**
760 )))
761
762 (((
763 (% aria-label="1654159460680-153.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1654159460680-153.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
764 )))
765
766
767
768
769 ==== **Set Payload version** ====
770
771 (((
772 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.
773 )))
774
775 * (((
776 **AT Command:**
777 )))
778
779 (% class="box infomessage" %)
780 (((
781 (((
782 **AT+PAYVER: Set PAYVER field = 1**
783 )))
784 )))
785
786 * (((
787 **Downlink Payload:**
788 )))
789
790 (((
791 **0xAE 01**  ~-~-> Set PAYVER field =  0x01
792 )))
793
794 (((
795 **0xAE 0F**   ~-~-> Set PAYVER field =  0x0F
796 )))
797
798
799
800
801 ==== **Set RS485 Sampling Commands** ====
802
803 (((
804 AT+COMMANDx or AT+DATACUTx
805 )))
806
807 (((
808 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"]].
809 )))
810
811 (((
812
813 )))
814
815 * (((
816 **AT Command:**
817 )))
818
819 (% class="box infomessage" %)
820 (((
821 (((
822 **AT+COMMANDx: Configure RS485 read command to sensor.**
823 )))
824 )))
825
826 (% class="box infomessage" %)
827 (((
828 (((
829 **AT+DATACUTx: Configure how to handle return from RS485 devices.**
830 )))
831 )))
832
833 (((
834
835 )))
836
837 * (((
838 **Downlink Payload:**
839 )))
840
841 (((
842 **0xAF** downlink command can be used to set AT+COMMANDx or AT+DATACUTx.
843 )))
844
845 (((
846 (% style="color:red" %)**Note**(%%): if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.
847 )))
848
849 (((
850 Format: AF MM NN LL XX XX XX XX YY
851 )))
852
853 (((
854 Where:
855 )))
856
857 * (((
858 MM: the ATCOMMAND or AT+DATACUT to be set. Value from 01 ~~ 0F,
859 )))
860 * (((
861 NN:  0: no CRC; 1: add CRC-16/MODBUS ; 2: set the AT+DATACUT value.
862 )))
863 * (((
864 LL:  The length of AT+COMMAND or AT+DATACUT command
865 )))
866 * (((
867 XX XX XX XX: AT+COMMAND or AT+DATACUT command
868 )))
869 * (((
870 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.
871 )))
872
873 (((
874 **Example:**
875 )))
876
877 (((
878 (% 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
879 )))
880
881 (((
882 (% 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**
883 )))
884
885 (((
886 (% 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**
887 )))
888
889
890
891
892 ==== **Fast command to handle MODBUS device** ====
893
894 (((
895 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]].
896 )))
897
898 (((
899 This command is valid since v1.3 firmware version
900 )))
901
902 (((
903 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.
904 )))
905
906 (((
907
908 )))
909
910 (((
911 **Example:**
912 )))
913
914 * (((
915 AT+MBFUN=1 and AT+DATACUT1/AT+DATACUT2 are not configure (0,0,0). So RS485-LN.
916 )))
917 * (((
918 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.
919 )))
920 * (((
921 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.
922 )))
923
924 (% 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://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
925
926 (% 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://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
927
928
929
930
931 ==== **RS485 command timeout** ====
932
933 (((
934 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.
935 )))
936
937 (((
938 Default value: 0, range:  0 ~~ 65 seconds
939 )))
940
941 * (((
942 **AT Command:**
943 )))
944
945 (% class="box infomessage" %)
946 (((
947 (((
948 **AT+CMDDLaa=hex(bb cc)*1000**
949 )))
950 )))
951
952 (((
953 **Example:**
954 )))
955
956 (((
957 **AT+CMDDL1=1000** to send the open time to 1000ms
958 )))
959
960 (((
961
962 )))
963
964 * (((
965 **Downlink Payload:**
966 )))
967
968 (((
969 **0x AA aa bb cc**
970 )))
971
972 (((
973 Same as: AT+CMDDLaa=hex(bb cc)*1000
974 )))
975
976 (((
977 **Example:**
978 )))
979
980 (((
981 0xAA 01 00 01  ~-~-> Same as **AT+CMDDL1=1000 ms**
982 )))
983
984
985
986
987 ==== **Uplink payload mode** ====
988
989 (((
990 Define to use one uplink or multiple uplinks for the sampling.
991 )))
992
993 (((
994 The use of this command please see: [[Compose Uplink payload>>||anchor="H3.3.4Composetheuplinkpayload"]]
995 )))
996
997 * (((
998 **AT Command:**
999 )))
1000
1001 (% class="box infomessage" %)
1002 (((
1003 (((
1004 **AT+DATAUP=0**
1005 )))
1006 )))
1007
1008 (% class="box infomessage" %)
1009 (((
1010 (((
1011 **AT+DATAUP=1**
1012 )))
1013 )))
1014
1015 (((
1016
1017 )))
1018
1019 * (((
1020 **Downlink Payload:**
1021 )))
1022
1023 (((
1024 **0xAD 00**  **~-~->** Same as AT+DATAUP=0
1025 )))
1026
1027 (((
1028 **0xAD 01**  **~-~->** Same as AT+DATAUP=1
1029 )))
1030
1031
1032
1033
1034 ==== **Manually trigger an Uplink** ====
1035
1036 (((
1037 Ask device to send an uplink immediately.
1038 )))
1039
1040 * (((
1041 **AT Command:**
1042 )))
1043
1044 (((
1045 No AT Command for this, user can press the [[ACT button>>||anchor="H3.7Buttons"]] for 1 second for the same.
1046 )))
1047
1048 (((
1049
1050 )))
1051
1052 * (((
1053 **Downlink Payload:**
1054 )))
1055
1056 (((
1057 **0x08 FF**, RS485-LN will immediately send an uplink.
1058 )))
1059
1060
1061
1062
1063 ==== **Clear RS485 Command** ====
1064
1065 (((
1066 The AT+COMMANDx and AT+DATACUTx settings are stored in special location, user can use below command to clear them.
1067 )))
1068
1069 * (((
1070 **AT Command:**
1071 )))
1072
1073 (((
1074 **AT+CMDEAR=mm,nn**   mm: start position of erase ,nn: stop position of erase
1075 )))
1076
1077 (((
1078 Etc. AT+CMDEAR=1,10 means erase AT+COMMAND1/AT+DATACUT1 to AT+COMMAND10/AT+DATACUT10
1079 )))
1080
1081 (((
1082 Example screen shot after clear all RS485 commands. 
1083 )))
1084
1085 (((
1086
1087 )))
1088
1089 (((
1090 The uplink screen shot is:
1091 )))
1092
1093 (% aria-label="1654160691922-496.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1654160691922-496.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
1094
1095
1096 * (((
1097 **Downlink Payload:**
1098 )))
1099
1100 (((
1101 **0x09 aa bb** same as AT+CMDEAR=aa,bb
1102 )))
1103
1104
1105
1106
1107 ==== **Set Serial Communication Parameters** ====
1108
1109 (((
1110 Set the Rs485 serial communication parameters:
1111 )))
1112
1113 * (((
1114 **AT Command:**
1115 )))
1116
1117 (((
1118 Set Baud Rate:
1119 )))
1120
1121 (% class="box infomessage" %)
1122 (((
1123 (((
1124 **AT+BAUDR=9600**    ~/~/ Options: (1200,2400,4800,14400,19200,115200)
1125 )))
1126 )))
1127
1128 (((
1129 Set UART Parity
1130 )))
1131
1132 (% class="box infomessage" %)
1133 (((
1134 (((
1135 **AT+PARITY=0**    ~/~/ Option: 0: no parity, 1: odd parity, 2: even parity
1136 )))
1137 )))
1138
1139 (((
1140 Set STOPBIT
1141 )))
1142
1143 (% class="box infomessage" %)
1144 (((
1145 (((
1146 **AT+STOPBIT=0**    ~/~/ Option: 0 for 1bit; 1 for 1.5 bit ; 2 for 2 bits
1147 )))
1148 )))
1149
1150 (((
1151
1152 )))
1153
1154 * (((
1155 **Downlink Payload:**
1156 )))
1157
1158 (((
1159 **A7 01 aa bb**: Same  AT+BAUDR=hex(aa bb)*100
1160 )))
1161
1162 (((
1163 **Example:**
1164 )))
1165
1166 * (((
1167 A7 01 00 60   same as AT+BAUDR=9600
1168 )))
1169 * (((
1170 A7 01 04 80  same as AT+BAUDR=115200
1171 )))
1172
1173 (((
1174 A7 02 aa: Same as  AT+PARITY=aa  (aa value: 00 , 01 or 02)
1175 )))
1176
1177 (((
1178 A7 03 aa: Same as  AT+STOPBIT=aa  (aa value: 00 , 01 or 02)
1179 )))
1180
1181
1182
1183
1184 == 3.6 Listening mode for RS485 network ==
1185
1186 (((
1187 This feature support since firmware v1.4
1188 )))
1189
1190 (((
1191 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.
1192 )))
1193
1194 (% aria-label="image-20220602171200-8.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602171200-8.png||data-widget="image" height="567" width="1007"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
1195
1196 (((
1197 To enable the listening mode, use can run the command AT+RXMODE.
1198 )))
1199
1200 (((
1201
1202 )))
1203
1204 (% border="1" cellspacing="10" style="background-color:#ffffcc; width:500px" %)
1205 |=(% style="width: 100px;" %)(((
1206 **Command example**
1207 )))|=(% style="width: 400px;" %)(((
1208 **Function**
1209 )))
1210 |(% style="width:100px" %)(((
1211 AT+RXMODE=1,10
1212 )))|(% style="width:400px" %)(((
1213 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.
1214 )))
1215 |(% style="width:100px" %)(((
1216 AT+RXMODE=2,500
1217 )))|(% style="width:400px" %)(((
1218 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
1219 )))
1220 |(% style="width:100px" %)(((
1221 AT+RXMODE=0,0
1222 )))|(% style="width:400px" %)(((
1223 Disable listening mode. This is the default settings.
1224 )))
1225 |(% style="width:100px" %)(((
1226
1227 )))|(% style="width:400px" %)(((
1228 A6 aa bb cc  same as AT+RXMODE=aa,(bb<<8 | cc)
1229 )))
1230
1231 (((
1232 **Downlink Command:**
1233 )))
1234
1235 (((
1236 **0xA6 aa bb cc ** same as AT+RXMODE=aa,(bb<<8 | cc)
1237 )))
1238
1239 (((
1240
1241 )))
1242
1243 (((
1244 **Example**:
1245 )))
1246
1247 (((
1248 The RS485-LN is set to AT+RXMODE=2,1000
1249 )))
1250
1251 (((
1252 There is a two Modbus commands in the RS485 network as below:
1253 )))
1254
1255 (((
1256 The Modbus master send a command: (% style="background-color:#ffc000" %)01 03 00 00 00 02 c4 0b
1257 )))
1258
1259 (((
1260 And Modbus slave reply with: (% style="background-color:green" %)01 03 04 00 00 00 00 fa 33
1261 )))
1262
1263 (((
1264 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
1265 )))
1266
1267 (((
1268 (% aria-label="image-20220602171200-9.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602171200-9.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
1269 )))
1270
1271 (((
1272
1273 )))
1274
1275 (((
1276 (((
1277 (% 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.
1278 )))
1279 )))
1280
1281
1282 == 3.7 Buttons ==
1283
1284
1285 (% border="1" cellspacing="10" style="background-color:#f7faff; width:430px" %)
1286 |=(% style="width: 50px;" %)**Button**|=(% style="width: 361px;" %)**Feature**
1287 |(% style="width:50px" %)**ACT**|(% style="width:361px" %)If RS485 joined in network, press this button for more than 1 second, RS485 will upload a packet, and the SYS LED will give a (% style="color:blue" %)**Blue blink**
1288 |(% style="width:50px" %)**RST**|(% style="width:361px" %)Reboot RS485
1289 |(% style="width:50px" %)**PRO**|(% style="width:361px" %)Use for upload image, see [[How to Update Image>>||anchor="H6.1Howtoupgradetheimage3F"]]
1290
1291 == 3.8 LEDs ==
1292
1293
1294 (% border="1" cellspacing="10" style="background-color:#f7faff; width:430px" %)
1295 |=(% style="width: 50px;" %)**LEDs**|=(% style="width: 380px;" %)**Feature**
1296 |**PWR**|Always on if there is power
1297 |**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.
1298
1299 = 4. Case Study =
1300
1301 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]]
1302
1303
1304 = 5. Use AT Command =
1305
1306 == 5.1 Access AT Command ==
1307
1308 (((
1309 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.
1310 )))
1311
1312 (% aria-label="1654162355560-817.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1654162355560-817.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
1313
1314
1315 (((
1316 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:
1317 )))
1318
1319 (% aria-label="1654162368066-342.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1654162368066-342.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
1320
1321
1322 (((
1323 More detail AT Command manual can be found at [[AT Command Manual>>https://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/]]
1324 )))
1325
1326
1327
1328 == 5.2 Common AT Command Sequence ==
1329
1330 === 5.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
1331
1332 If device has not joined network yet:
1333
1334 (% class="box infomessage" %)
1335 (((
1336 **AT+FDR**
1337 )))
1338
1339 (% class="box infomessage" %)
1340 (((
1341 **AT+NJM=0**
1342 )))
1343
1344 (% class="box infomessage" %)
1345 (((
1346 **ATZ**
1347 )))
1348
1349
1350 (((
1351 If device already joined network:
1352 )))
1353
1354 (% class="box infomessage" %)
1355 (((
1356 **AT+NJM=0**
1357 )))
1358
1359 (% class="box infomessage" %)
1360 (((
1361 **ATZ**
1362 )))
1363
1364
1365 === 5.5.2 Single-channel ABP mode (Use with LG01/LG02) ===
1366
1367
1368 (% style="background-color:#dcdcdc" %)**AT+FDR** (%%) Reset Parameters to Factory Default, Keys Reserve
1369
1370 (% style="background-color:#dcdcdc" %)**AT+NJM=0 **(%%)Set to ABP mode
1371
1372 (% style="background-color:#dcdcdc" %)**AT+ADR=0** (%%)Set the Adaptive Data Rate Off
1373
1374 (% style="background-color:#dcdcdc" %)**AT+DR=5**   (%%)Set Data Rate
1375
1376 (% style="background-color:#dcdcdc" %)**AT+TDC=60000** (%%) Set transmit interval to 60 seconds
1377
1378 (% style="background-color:#dcdcdc" %)**AT+CHS=868400000**(%%) Set transmit frequency to 868.4Mhz
1379
1380 (% style="background-color:#dcdcdc" %)**AT+RX2FQ=868400000** (%%) Set RX2Frequency to 868.4Mhz (according to the result from server)
1381
1382 (% style="background-color:#dcdcdc" %)**AT+RX2DR=5**  (%%) Set RX2DR to match the downlink DR from server. see below
1383
1384 (% 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.
1385
1386 (% style="background-color:#dcdcdc" %)**ATZ**       (%%) Reset MCU
1387
1388
1389 (% style="color:red" %)**Note:**
1390
1391 (((
1392 (% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server.
1393 2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
1394 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.
1395 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
1396 )))
1397
1398 (% aria-label="1654162478620-421.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1654162478620-421.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
1399
1400
1401 = 6. FAQ =
1402
1403 == 6.1 How to upgrade the image? ==
1404
1405 (((
1406 The RS485-LN LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to RS485-LN to:
1407 )))
1408
1409 * (((
1410 Support new features
1411 )))
1412 * (((
1413 For bug fix
1414 )))
1415 * (((
1416 Change LoRaWAN bands.
1417 )))
1418
1419 (((
1420 Below shows the hardware connection for how to upload an image to RS485-LN:
1421 )))
1422
1423 (% aria-label="1654162535040-878.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1654162535040-878.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
1424
1425 (((
1426 **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]].
1427 )))
1428
1429 (((
1430 **Step2**: Download the [[LT Image files>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]].
1431 )))
1432
1433 (((
1434 **Step3: **Open flashloader; choose the correct COM port to update.
1435 )))
1436
1437 (((
1438 (((
1439 (((
1440 (% 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.
1441 )))
1442 )))
1443 )))
1444
1445
1446 (% aria-label="image-20220602175818-12.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602175818-12.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
1447
1448
1449 (% aria-label="image-20220602175848-13.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602175848-13.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
1450
1451
1452 (% aria-label="image-20220602175912-14.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602175912-14.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
1453
1454
1455 **Notice**: In case user has lost the program cable. User can hand made one from a 3.5mm cable. The pin mapping is:
1456
1457 (% aria-label="image-20220602175638-10.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602175638-10.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
1458
1459
1460 == 6.2 How to change the LoRa Frequency Bands/Region? ==
1461
1462 User can follow the introduction for [[how to upgrade image>>||anchor="H6.1Howtoupgradetheimage3F"]]. When download the images, choose the required image file for download.
1463
1464
1465 == 6.3 How many RS485-Slave can RS485-BL connects? ==
1466
1467 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"]].
1468
1469
1470 == 6.4 Compatible question to ChirpStack and TTI LoRaWAN server ? ==
1471
1472 When user need to use with ChirpStack or TTI. Please set AT+RPL=4.
1473
1474 Detail info check this link: [[Set Packet Receiving Response Level>>doc:Main.End Device AT Commands and Downlink Command.WebHome||anchor="H7.23SetPacketReceivingResponseLevel"]]
1475
1476
1477 = 7. Trouble Shooting =
1478
1479 == 7.1 Downlink doesn’t work, how to solve it? ==
1480
1481 Please see this link for debug: [[LoRaWAN Communication Debug>>doc:Main.LoRaWAN Communication Debug.WebHome]]
1482
1483
1484 == 7.2 Why I can’t join TTN V3 in US915 /AU915 bands? ==
1485
1486 It might about the channels mapping. Please see for detail: [[Notice of Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
1487
1488
1489 = 8. Order Info =
1490
1491 (% style="color:blue" %)**Part Number: RS485-LN-XXX**
1492
1493 (% style="color:blue" %)**XXX:**
1494
1495 * (% style="color:blue" %)**EU433**(%%): frequency bands EU433
1496 * (% style="color:blue" %)**EU868**(%%): frequency bands EU868
1497 * (% style="color:blue" %)**KR920**(%%): frequency bands KR920
1498 * (% style="color:blue" %)**CN470**(%%): frequency bands CN470
1499 * (% style="color:blue" %)**AS923**(%%): frequency bands AS923
1500 * (% style="color:blue" %)**AU915**(%%): frequency bands AU915
1501 * (% style="color:blue" %)**US915**(%%): frequency bands US915
1502 * (% style="color:blue" %)**IN865**(%%): frequency bands IN865
1503 * (% style="color:blue" %)**RU864**(%%): frequency bands RU864
1504 * (% style="color:blue" %)**KZ865**(%%): frequency bands KZ865
1505
1506 = 9.Packing Info =
1507
1508
1509 **Package Includes**:
1510
1511 * RS485-LN x 1
1512 * Stick Antenna for LoRa RF part x 1
1513 * Program cable x 1
1514
1515 **Dimension and weight**:
1516
1517 * Device Size: 13.5 x 7 x 3 cm
1518 * Device Weight: 105g
1519 * Package Size / pcs : 14.5 x 8 x 5 cm
1520 * Weight / pcs : 170g
1521
1522 = 10. FCC Caution for RS485LN-US915 =
1523
1524 (((
1525 Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
1526 )))
1527
1528 (((
1529 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.
1530 )))
1531
1532 (((
1533
1534 )))
1535
1536 (((
1537 **IMPORTANT NOTE:**
1538 )))
1539
1540 (((
1541 **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:
1542 )))
1543
1544 (((
1545 —Reorient or relocate the receiving antenna.
1546 )))
1547
1548 (((
1549 —Increase the separation between the equipment and receiver.
1550 )))
1551
1552 (((
1553 —Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
1554 )))
1555
1556 (((
1557 —Consult the dealer or an experienced radio/TV technician for help.
1558 )))
1559
1560 (((
1561
1562 )))
1563
1564 (((
1565 **FCC Radiation Exposure Statement:**
1566 )))
1567
1568 (((
1569 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.
1570 )))
1571
1572
1573 = 11. Support =
1574
1575 * (((
1576 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.
1577 )))
1578 * (((
1579 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]].
1580 )))