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6 (% style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||height="15" role="presentation" title="Click and drag to move" width="15"]]
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11 **RS485-LN – RS485 to LoRaWAN Converter User Manual**
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15
16 **Table of Contents:**
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26
27 * [[1.Introduction>>doc:null||anchor="H1.Introduction"]]
28 ** [[1.1 What is RS485-LN RS485 to LoRaWAN Converter>>doc:null||anchor="H1.1A0WhatisRS485-LNRS485toLoRaWANConverter"]]
29 ** [[1.2 Specifications>>doc:null||anchor="H1.2A0Specifications"]]
30 ** [[1.3 Features>>doc:null||anchor="H1.3Features"]]
31 ** [[1.4 Applications>>doc:null||anchor="H1.4A0Applications"]]
32 ** [[1.5 Firmware Change log>>doc:null||anchor="H1.5A0FirmwareChangelog"]]
33 ** [[1.6 Hardware Change log>>doc:null||anchor="H1.6HardwareChangelog"]]
34 * [[2. Power ON Device>>doc:null||anchor="H2.PowerONDevice"]]
35 * [[3. Operation Mode>>doc:null||anchor="H3.A0OperationMode"]]
36 ** [[3.1 How it works?>>doc:null||anchor="H3.1Howitworks3F"]]
37 ** [[3.2 Example to join LoRaWAN network>>doc:null||anchor="H3.2ExampletojoinLoRaWANnetwork"]]
38 ** [[3.3 Configure Commands to read data>>doc:null||anchor="H3.3ConfigureCommandstoreaddata"]]
39 *** [[3.3.1 onfigure UART settings for RS485 or TTL communication>>doc:null||anchor="H3.3.1onfigureUARTsettingsforRS485orTTLcommunication"]]
40 *** [[3.3.2 Configure sensors>>doc:null||anchor="H3.3.2Configuresensors"]]
41 *** [[3.3.3 Configure read commands for each sampling>>doc:null||anchor="H3.3.3Configurereadcommandsforeachsampling"]]
42 *** [[3.3.4 Compose the uplink payload>>doc:null||anchor="H3.3.4Composetheuplinkpayload"]]
43 *** [[3.3.5 Uplink on demand>>doc:null||anchor="H3.3.5Uplinkondemand"]]
44 *** [[3.3.6 Uplink on Interrupt>>doc:null||anchor="H3.3.6UplinkonInterrupt"]]
45 ** [[3.4 Uplink Payload>>doc:null||anchor="H3.4UplinkPayload"]]
46 ** [[3.5 Configure RS485-BL via AT or Downlink>>doc:null||anchor="H3.5ConfigureRS485-BLviaATorDownlink"]]
47 *** [[3.5.1 Common Commands>>doc:null||anchor="H3.5.1CommonCommands"]]
48 *** [[3.5.2 Sensor related commands>>doc:null||anchor="H3.5.2Sensorrelatedcommands"]]
49 *** [[3.5.3 Sensor related commands>>doc:null||anchor="H3.5.3A0Sensorrelatedcommands"]]
50 **** [[RS485 Debug Command>>doc:null||anchor="HRS485DebugCommand"]]
51 **** [[Set Payload version>>doc:null||anchor="HSetPayloadversion"]]
52 **** [[Set RS485 Sampling Commands>>doc:null||anchor="HSetRS485SamplingCommands"]]
53 **** [[Fast command to handle MODBUS device>>doc:null||anchor="HFastcommandtohandleMODBUSdevice"]]
54 **** [[RS485 command timeout>>doc:null||anchor="HRS485commandtimeout"]]
55 **** [[Uplink payload mode>>doc:null||anchor="HUplinkpayloadmode"]]
56 **** [[Manually trigger an Uplink>>doc:null||anchor="HManuallytriggeranUplink"]]
57 **** [[Clear RS485 Command>>doc:null||anchor="HClearRS485Command"]]
58 **** [[Set Serial Communication Parameters>>doc:null||anchor="HSetSerialCommunicationParameters"]]
59 ** [[3.6 Listening mode for RS485 network>>doc:null||anchor="H3.6A0ListeningmodeforRS485network"]]
60 ** [[3.7 Buttons>>doc:null||anchor="H3.7Buttons"]]
61 ** [[3.8 LEDs>>doc:null||anchor="H3.8LEDs"]]
62 * [[4. Case Study>>doc:null||anchor="H4.CaseStudy"]]
63 * [[5. Use AT Command>>doc:null||anchor="H5.UseATCommand"]]
64 ** [[5.1 Access AT Command>>doc:null||anchor="H5.1AccessATCommand"]]
65 ** [[5.2 Common AT Command Sequence>>doc:null||anchor="H5.2CommonATCommandSequence"]]
66 *** [[5.2.1 Multi-channel ABP mode (Use with SX1301/LG308)>>doc:null||anchor="H5.2.1Multi-channelABPmode28UsewithSX13012FLG30829"]]
67 *** [[5.5.2 Single-channel ABP mode (Use with LG01/LG02)>>doc:null||anchor="H5.5.2Single-channelABPmode28UsewithLG012FLG0229"]]
68 * [[6. FAQ>>doc:null||anchor="H6.FAQ"]]
69 ** [[6.1 How to upgrade the image?>>doc:null||anchor="H6.1Howtoupgradetheimage3F"]]
70 ** [[6.2 How to change the LoRa Frequency Bands/Region?>>doc:null||anchor="H6.2HowtochangetheLoRaFrequencyBands2FRegion3F"]]
71 ** [[6.3 How many RS485-Slave can RS485-BL connects?>>doc:null||anchor="H6.3HowmanyRS485-SlavecanRS485-BLconnects3F"]]
72 ** [[6.4 Compatible question to ChirpStack and TTI LoRaWAN server ?>>doc:null||anchor="H6.4CompatiblequestiontoChirpStackandTTILoRaWANserver3F"]]
73 * [[7. Trouble Shooting>>doc:null||anchor="H7.TroubleShooting"]]
74 ** [[7.1 Downlink doesn’t work, how to solve it?>>doc:null||anchor="H7.1Downlinkdoesn2019twork2Chowtosolveit3F"]]
75 ** [[7.2 Why I can’t join TTN V3 in US915 /AU915 bands?>>doc:null||anchor="H7.2WhyIcan2019tjoinTTNV3inUS9152FAU915bands3F"]]
76 * [[8. Order Info>>doc:null||anchor="H8.OrderInfo"]]
77 * [[9.Packing Info>>doc:null||anchor="H9.PackingInfo"]]
78 * [[10. FCC Caution for RS485LN-US915>>doc:null||anchor="H10.FCCCautionforRS485LN-US915"]]
79 * [[11. Support>>doc:null||anchor="H11.Support"]]
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82 (% style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||height="15" role="presentation" title="Click and drag to move" width="15"]]
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90
91 = 1.Introduction =
92
93 == 1.1 What is RS485-LN RS485 to LoRaWAN Converter ==
94
95 (((
96 (((
97 The Dragino RS485-LN is a (% style="color:blue" %)**RS485 to LoRaWAN Converter**(%%). It converts the RS485 signal into LoRaWAN wireless signal which simplify the IoT installation and reduce the installation/maintaining cost.
98 )))
99
100 (((
101 RS485-LN allows user to (% style="color:blue" %)**monitor / control RS485 devices**(%%) and reach extremely long ranges. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption. It targets professional wireless sensor network applications such as irrigation systems, smart metering, smart cities, smartphone detection, building automation, and so on.
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104 (((
105 (% style="color:blue" %)**For data uplink**(%%), RS485-LN sends user-defined commands to RS485 devices and gets the return from the RS485 devices. RS485-LN will process these returns according to user-define rules to get the final payload and upload to LoRaWAN server.
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107
108 (((
109 (% style="color:blue" %)**For data downlink**(%%), RS485-LN runs in LoRaWAN Class C. When there downlink commands from LoRaWAN server, RS485-LN will forward the commands from LoRaWAN server to RS485 devices.
110
111 (% style="color:blue" %)**Demo Dashboard for RS485-LN**(%%) connect to two energy meters: [[https:~~/~~/app.datacake.de/dashboard/d/58844a26-378d-4c5a-aaf5-b5b5b153447a>>url:https://app.datacake.de/dashboard/d/58844a26-378d-4c5a-aaf5-b5b5b153447a]]
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115 (% aria-label="1653267211009-519.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1653267211009-519.png||data-widget="image" height="419" width="724"]](% style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
116
117
118 == 1.2 Specifications ==
119
120
121 **Hardware System:**
122
123 * STM32L072CZT6 MCU
124 * SX1276/78 Wireless Chip 
125 * Power Consumption (exclude RS485 device):
126 ** Idle: 32mA@12v
127 ** 20dB Transmit: 65mA@12v
128
129 **Interface for Model:**
130
131 * RS485
132 * Power Input 7~~ 24V DC. 
133
134 **LoRa Spec:**
135
136 * Frequency Range:
137 ** Band 1 (HF): 862 ~~ 1020 Mhz
138 ** Band 2 (LF): 410 ~~ 528 Mhz
139 * 168 dB maximum link budget.
140 * +20 dBm - 100 mW constant RF output vs.
141 * +14 dBm high efficiency PA.
142 * Programmable bit rate up to 300 kbps.
143 * High sensitivity: down to -148 dBm.
144 * Bullet-proof front end: IIP3 = -12.5 dBm.
145 * Excellent blocking immunity.
146 * Low RX current of 10.3 mA, 200 nA register retention.
147 * Fully integrated synthesizer with a resolution of 61 Hz.
148 * FSK, GFSK, MSK, GMSK, LoRaTM and OOK modulation.
149 * Built-in bit synchronizer for clock recovery.
150 * Preamble detection.
151 * 127 dB Dynamic Range RSSI.
152 * Automatic RF Sense and CAD with ultra-fast AFC.
153 * Packet engine up to 256 bytes with CRC
154
155 == 1.3 Features ==
156
157 * LoRaWAN Class A & Class C protocol (default Class C)
158 * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865/RU864
159 * AT Commands to change parameters
160 * Remote configure parameters via LoRa Downlink
161 * Firmware upgradable via program port
162 * Support multiply RS485 devices by flexible rules
163 * Support Modbus protocol
164 * Support Interrupt uplink (Since hardware version v1.2)
165
166 == 1.4 Applications ==
167
168 * Smart Buildings & Home Automation
169 * Logistics and Supply Chain Management
170 * Smart Metering
171 * Smart Agriculture
172 * Smart Cities
173 * Smart Factory
174
175 == 1.5 Firmware Change log ==
176
177 [[RS485-LN Image files – Download link and Change log>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/]]
178
179
180 == 1.6 Hardware Change log ==
181
182 (((
183 (((
184 v1.2: Add External Interrupt Pin.
185
186 v1.0: Release
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188
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190 )))
191
192 = 2. Power ON Device =
193
194 (((
195 The RS485-LN can be powered by 7 ~~ 24V DC power source. Connection as below
196
197 * Power Source VIN to RS485-LN VIN+
198 * Power Source GND to RS485-LN VIN-
199
200 (((
201 Once there is power, the RS485-LN will be on.
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203
204 (% aria-label="1653268091319-405.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1653268091319-405.png||data-widget="image"]](% style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
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206
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208
209 = 3. Operation Mode =
210
211 == 3.1 How it works? ==
212
213 (((
214 The RS485-LN is configured as LoRaWAN OTAA Class C mode by default. It has OTAA keys to join network. To connect a local LoRaWAN network, user just need to input the OTAA keys in the network server and power on the RS485-LN. It will auto join the network via OTAA.
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216
217 )))
218
219 == 3.2 Example to join LoRaWAN network ==
220
221 Here shows an example for how to join the TTN V3 Network. Below is the network structure, we use [[LG308>>url:http://www.dragino.com/products/lora-lorawan-gateway/item/140-lg308.html]] as LoRaWAN gateway here. 
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223 (% aria-label="1653268155545-638.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1653268155545-638.png||data-widget="image" height="334" width="724"]](% style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
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225
226 (((
227 (((
228 The RS485-LN in this example connected to two RS485 devices for demonstration, user can connect to other RS485 devices via the same method. The connection is as below:
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230
231 (((
232 485A+ and 485B- of the sensor are connected to RS485A and RA485B of RS485-LN respectively.
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235 (% aria-label="1653268227651-549.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1653268227651-549.png||data-widget="image" height="592" width="720"]](% style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
236
237 (((
238 The LG308 is already set to connect to [[TTN V3 network >>path:https://www.thethingsnetwork.org/]]. So what we need to now is only configure the TTN V3:
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240
241 (((
242 **Step 1**: Create a device in TTN V3 with the OTAA keys from RS485-LN.
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244
245 (((
246 Each RS485-LN is shipped with a sticker with unique device EUI:
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250 (% aria-label="1652953462722-299.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1652953462722-299.png||data-widget="image"]](% style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
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252 (((
253 (((
254 User can enter this key in their LoRaWAN Server portal. Below is TTN V3 screen shot:
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256
257 (((
258 Add APP EUI in the application.
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262 (% aria-label="image-20220519174512-1.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220519174512-1.png||data-widget="image"]](% style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
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264 (% aria-label="image-20220519174512-2.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220519174512-2.png||data-widget="image" height="323" width="720"]](% style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
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266 (% aria-label="image-20220519174512-3.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220519174512-3.png||data-widget="image" height="556" width="724"]](% style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
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268 (% aria-label="image-20220519174512-4.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220519174512-4.png||data-widget="image"]](% style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
269
270 You can also choose to create the device manually.
271
272 (% aria-label="1652953542269-423.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1652953542269-423.png||data-widget="image" height="710" width="723"]](% style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
273
274 Add APP KEY and DEV EUI
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276 (% aria-label="1652953553383-907.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1652953553383-907.png||data-widget="image" height="514" width="724"]](% style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
277
278
279 (((
280 **Step 2**: Power on RS485-LN and it will auto join to the TTN V3 network. After join success, it will start to upload message to TTN V3 and user can see in the panel.
281 )))
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283 (% aria-label="1652953568895-172.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1652953568895-172.png||data-widget="image" height="232" width="724"]](% style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
284
285
286 == 3.3 Configure Commands to read data ==
287
288 (((
289 (((
290 There are plenty of RS485 devices in the market and each device has different command to read the valid data. To support these devices in flexible, RS485-LN supports flexible command set. User can use [[AT Commands>>||anchor="H3.5ConfigureRS485-BLviaATorDownlink"]] or LoRaWAN Downlink Command to configure what commands RS485-LN should send for each sampling and how to handle the return from RS485 devices.
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292
293 (((
294 (% style="color:red" %)Note: below description and commands are for firmware version >v1.1, if you have firmware version v1.0. Please check the [[user manual v1.0>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/&file=RS485-LN_UserManual_v1.0.1.pdf]] or upgrade the firmware to v1.1
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296
297 )))
298 )))
299
300 === 3.3.1 onfigure UART settings for RS485 or TTL communication ===
301
302 To use RS485-LN to read data from RS485 sensors, connect the RS485-LN A/B traces to the sensors. And user need to make sure RS485-LN use the match UART setting to access the sensors. The related commands for UART settings are:
303
304 (% border="1" style="background-color:#ffffcc; color:green; width:782px" %)
305 |(% style="width:128px" %)(((
306 **AT Commands**
307 )))|(% style="width:305px" %)(((
308 **Description**
309 )))|(% style="width:346px" %)(((
310 **Example**
311 )))
312 |(% style="width:128px" %)(((
313 AT+BAUDR
314 )))|(% style="width:305px" %)(((
315 Set the baud rate (for RS485 connection). Default Value is: 9600.
316 )))|(% style="width:346px" %)(((
317 (((
318 AT+BAUDR=9600
319 )))
320
321 (((
322 Options: (1200,2400,4800,14400,19200,115200)
323 )))
324 )))
325 |(% style="width:128px" %)(((
326 AT+PARITY
327 )))|(% style="width:305px" %)(((
328 Set UART parity (for RS485 connection)
329 )))|(% style="width:346px" %)(((
330 (((
331 AT+PARITY=0
332 )))
333
334 (((
335 Option: 0: no parity, 1: odd parity, 2: even parity
336 )))
337 )))
338 |(% style="width:128px" %)(((
339 AT+STOPBIT
340 )))|(% style="width:305px" %)(((
341 (((
342 Set serial stopbit (for RS485 connection)
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344
345 (((
346
347 )))
348 )))|(% style="width:346px" %)(((
349 (((
350 AT+STOPBIT=0 for 1bit
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352
353 (((
354 AT+STOPBIT=1 for 1.5 bit
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356
357 (((
358 AT+STOPBIT=2 for 2 bits
359 )))
360 )))
361
362 === 3.3.2 Configure sensors ===
363
364 (((
365 (((
366 Some sensors might need to configure before normal operation. User can configure such sensor via PC and RS485 adapter or through RS485-LN AT Commands (% style="color:#4f81bd" %)**AT+CFGDEV**(%%). Each (% style="color:#4f81bd" %)**AT+CFGDEV **(%%)equals to send a RS485 command to sensors. This command will only run when user input it and won’t run during each sampling.
367 )))
368 )))
369
370 (% border="1" style="background-color:#ffffcc; color:green; width:806px" %)
371 |**AT Commands**|(% style="width:418px" %)**Description**|(% style="width:256px" %)**Example**
372 |AT+CFGDEV|(% style="width:418px" %)(((
373 This command is used to configure the RS485/TTL devices; they won’t be used during sampling.
374
375 AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,
376
377 mm: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
378 )))|(% style="width:256px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
379
380 === 3.3.3 Configure read commands for each sampling ===
381
382 (((
383 During each sampling, we need confirm what commands we need to send to the RS485 sensors to read data. After the RS485 sensors send back the value, it normally include some bytes and we only need a few from them for a shorten payload.
384
385 To save the LoRaWAN network bandwidth, we might need to read data from different sensors and combine their valid value into a short payload.
386
387 This section describes how to achieve above goals.
388
389 During each sampling, the RS485-LN can support 15 commands to read sensors. And combine the return to one or several uplink payloads.
390
391
392 **Each RS485 commands include two parts:**
393
394 ~1. What commands RS485-LN will send to the RS485 sensors. There are total 15 commands from **AT+COMMAD1**, **ATCOMMAND2**,…, to **AT+COMMANDF**. All commands are of same grammar.
395
396 2. How to get wanted value the from RS485 sensors returns from by 1). There are total 15 AT Commands to handle the return, commands are **AT+DATACUT1**,**AT+DATACUT2**,…, **AT+DATACUTF** corresponding to the commands from 1). All commands are of same grammar.
397
398 3. Some RS485 device might has longer delay on reply, so user can use AT+CMDDL to set the timeout for getting reply after the RS485 command is sent. For example **AT+CMDDL1=1000** to send the open time to 1000ms
399
400
401 After we got the valid value from each RS485 commands, we need to combine them together with the command **AT+DATAUP**.
402
403
404 Below are examples for the how above AT Commands works.
405
406
407 **AT+COMMANDx : **This command will be sent to RS485 devices during each sampling, Max command length is 14 bytes. The grammar is:
408
409 (% border="1" style="background-color:#4bacc6; color:white; width:499px" %)
410 |(% style="width:496px" %)(((
411 **AT+COMMANDx=xx xx xx xx xx xx xx xx xx xx xx xx,m**
412
413 **xx xx xx xx xx xx xx xx xx xx xx xx: The RS485 command to be sent**
414
415 **m: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command**
416 )))
417
418 For example, if we have a RS485 sensor. The command to get sensor value is: 01 03 0B B8 00 02 46 0A. Where 01 03 0B B8 00 02 is the Modbus command to read the register 0B B8 where stored the sensor value. The 46 0A is the CRC-16/MODBUS which calculate manually.
419
420 In the RS485-LN, we should use this command AT+COMMAND1=01 03 0B B8 00 02,1 for the same.
421
422
423 **AT+DATACUTx : **This command defines how to handle the return from AT+COMMANDx, max return length is 45 bytes.
424
425 (% border="1" style="background-color:#4bacc6; color:white; width:725px" %)
426 |(% style="width:722px" %)(((
427 **AT+DATACUTx=a,b,c**
428
429 * **a: length for the return of AT+COMMAND**
430 * **b:1: grab valid value by byte, max 6 bytes. 2: grab valid value by bytes section, max 3 sections.**
431 * **c: define the position for valid value.  **
432 )))
433
434 **Examples:**
435
436 * Grab bytes:
437
438 (% aria-label="image-20220602153621-1.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602153621-1.png||data-widget="image"]](% style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
439
440
441 * Grab a section.
442
443 (% aria-label="image-20220602153621-2.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602153621-2.png||data-widget="image"]](% style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
444
445
446 * Grab different sections.
447
448 (% aria-label="image-20220602153621-3.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602153621-3.png||data-widget="image"]](% style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
449
450
451 )))
452
453 === 3.3.4 Compose the uplink payload ===
454
455 (((
456 Through AT+COMMANDx and AT+DATACUTx we got valid value from each RS485 commands, Assume these valid value are RETURN1, RETURN2, .., to RETURNx. The next step is how to compose the LoRa Uplink Payload by these RETURNs. The command is **AT+DATAUP.**
457
458
459 )))
460
461 (((
462 (% style="color:#037691" %)**Examples: AT+DATAUP=0**
463
464
465 )))
466
467 (((
468 Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**A SIGNLE UPLINK**.
469 )))
470
471 (((
472 Final Payload is
473 )))
474
475 (((
476 (% style="color:#4f81bd" %)**Battery Info+PAYVER + VALID Value from RETURN1 + Valid Value from RETURN2 + … + RETURNx**
477 )))
478
479 (((
480 Where PAYVER is defined by AT+PAYVER, below is an example screen shot.
481 )))
482
483 (% aria-label="1653269759169-150.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1653269759169-150.png||data-widget="image" height="513" width="716"]](% style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
484
485
486 (% style="color:#037691" %)**Examples: AT+DATAUP=1**
487
488
489 Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**Multiply UPLINKs**.
490
491 Final Payload is
492
493 (% style="color:#4f81bd" %)**Battery Info+PAYVER + PAYLOAD COUNT + PAYLOAD# + DATA**
494
495
496 1. PAYVER: Defined by AT+PAYVER
497 1. PAYLOAD COUNT: Total how many uplinks of this sampling.
498 1. PAYLOAD#: Number of this uplink. (from 0,1,2,3…,to PAYLOAD COUNT)
499 1. DATA: Valid value: max 8 bytes for each uplink so each uplink <= 11 bytes. For the last uplink, DATA will might less than 8 bytes
500
501 (% aria-label="image-20220602155039-4.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602155039-4.png||data-widget="image"]](% style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
502
503
504 So totally there will be 3 uplinks for this sampling, each uplink include 8 bytes DATA
505
506 DATA1=RETURN1 Valid Value + the first two of Valid value of RETURN10= **20 20 0a 33 90 41 02 aa**
507
508 DATA2=3^^rd^^ ~~ 10^^th^^ byte of Valid value of RETURN10= **05 81 0a 20 20 20 20 2d**
509
510 DATA3=the rest of Valid value of RETURN10= **30**
511
512
513 (% style="color:red" %)Notice: In firmware v1.3, the Max bytes has been changed according to the max bytes in different Frequency Bands for lowest SF. As below:
514
515 ~* For AU915/AS923 bands, if UplinkDwell time=0, max 51 bytes for each uplink.
516
517 * For AU915/AS923 bands, if UplinkDwell time=0, max 11 bytes for each uplink.
518
519 * For US915 band, max 11 bytes for each uplink.
520
521 ~* For all other bands: max 51 bytes for each uplink.
522
523
524 Below are the uplink payloads:
525
526 (% aria-label="1654157178836-407.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1654157178836-407.png||data-widget="image"]](% style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
527
528
529 === 3.3.5 Uplink on demand ===
530
531 Except uplink periodically, RS485-LN is able to uplink on demand. The server send downlink command to RS485-LN and RS485 will uplink data base on the command.
532
533 Downlink control command:
534
535 **0x08 command**: Poll an uplink with current command set in RS485-LN.
536
537 **0xA8 command**: Send a command to RS485-LN and uplink the output from sensors.
538
539
540
541 === 3.3.6 Uplink on Interrupt ===
542
543 RS485-LN support external Interrupt uplink since hardware v1.2 release.
544
545 (% aria-label="1654157342174-798.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1654157342174-798.png||data-widget="image"]](% style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
546
547 Connect the Interrupt pin to RS485-LN INT port and connect the GND pin to V- port. When there is a high voltage (Max 24v) on INT pin. Device will send an uplink packet.
548
549
550 == 3.4 Uplink Payload ==
551
552 (% border="1" style="background-color:#4bacc6; color:white; width:734px" %)
553 |**Size(bytes)**|(% style="width:120px" %)**2**|(% style="width:116px" %)**1**|(% style="width:386px" %)**Length depends on the return from the commands**
554 |Value|(% style="width:120px" %)(((
555 Battery(mV)
556
557 &
558
559 Interrupt _Flag
560 )))|(% style="width:116px" %)(((
561 PAYLOAD_VER
562
563
564 )))|(% style="width:386px" %)If the valid payload is too long and exceed the maximum support payload length in server, server will show payload not provided in the LoRaWAN server.
565
566 Below is the decoder for the first 3 bytes. The rest bytes are dynamic depends on different RS485 sensors.
567
568
569 == 3.5 Configure RS485-BL via AT or Downlink ==
570
571 User can configure RS485-LN via AT Commands or LoRaWAN Downlink Commands
572
573 There are two kinds of Commands:
574
575 * (% style="color:#4f81bd" %)**Common Commands**(%%): They should be available for each sensor, such as: change uplink interval, reset device. For firmware v1.3, user can find what common commands it supports: [[AT Commands and Downlink Command>>doc:Main.End Device AT Commands and Downlink Command.WebHome]]
576
577 * (% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for RS485-LN.  User can see these commands below:
578
579 === 3.5.1 Common Commands ===
580
581 They should be available for each of Dragino Sensors, such as: change uplink interval, reset device. For firmware v1.3, user can find what common commands it supports: [[End Device AT Commands and Downlink Command>>doc:Main.End Device AT Commands and Downlink Command.WebHome]]
582
583
584 === 3.5.2 Sensor related commands ===
585
586 Response feature is added to the server's downlink, a special package with a FPort of 200 will be uploaded immediately after receiving the data sent by the server.
587
588 (% aria-label="image-20220602163333-5.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602163333-5.png||data-widget="image" height="263" width="1160"]](% style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
589
590 The first byte of this package represents whether the configuration is successful, 00 represents failure, 01 represents success. Except for the first byte, the other is the previous downlink. (All commands except A8 type commands are applicable)
591
592
593 === 3.5.3 Sensor related commands ===
594
595
596
597 ==== **RS485 Debug Command** ====
598
599 This command is used to configure the RS485 devices; they won’t be used during sampling.
600
601 * **AT Command**
602
603 (% class="box infomessage" %)
604 (((
605 **AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m**
606 )))
607
608 m: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
609
610 * **Downlink Payload**
611
612 Format: A8 MM NN XX XX XX XX YY
613
614 Where:
615
616 * MM: 1: add CRC-16/MODBUS ; 0: no CRC
617 * NN: The length of RS485 command
618 * XX XX XX XX: RS485 command total NN bytes
619 * YY: How many bytes will be uplink from the return of this RS485 command,
620 ** if YY=0, RS485-LN will execute the downlink command without uplink;
621 ** if YY>0, RS485-LN will uplink total YY bytes from the output of this RS485 command; Fport=200
622 ** if YY=FF, RS485-LN will uplink RS485 output with the downlink command content; Fport=200.
623
624 **Example 1** ~-~-> Configure without ask for uplink (YY=0)
625
626 To connect a Modbus Alarm with below commands.
627
628 * The command to active alarm is: 0A 05 00 04 00 01 4C B0. Where 0A 05 00 04 00 01 is the Modbus command to read the register 00 40 where stored the DI status. The 4C B0 is the CRC-16/MODBUS which calculate manually.
629
630 * The command to deactivate alarm is: 0A 05 00 04 00 00 8D 70. Where 0A 05 00 04 00 00 is the Modbus command to read the register 00 40 where stored the DI status. The 8D 70 is the CRC-16/MODBUS which calculate manually.
631
632 So if user want to use downlink command to control to RS485 Alarm, he can use:
633
634 (% style="color:#4f81bd" %)**A8 01 06 0A 05 00 04 00 01 00**(%%): to activate the RS485 Alarm
635
636 (% style="color:#4f81bd" %)**A8 01 06 0A 05 00 04 00 00 00**(%%): to deactivate the RS485 Alarm
637
638 A8 is type code and 01 means add CRC-16/MODBUS at the end, the 3^^rd^^ byte is 06, means the next 6 bytes are the command to be sent to the RS485 network, the final byte 00 means this command don’t need to acquire output.
639
640
641 **Example 2** ~-~-> Configure with requesting uplink and original downlink command (**YY=FF**)
642
643 User in IoT server send a downlink command: (% style="color:#4f81bd" %)**A8 01 06 0A 08 00 04 00 01 YY**
644
645
646 RS485-LN got this downlink command and send (% style="color:#4f81bd" %)**0A 08 00 04 00 01 **(%%)to Modbus network. One of the RS485 sensor in the network send back Modbus reply **0A 08 00 04 00 00**. RS485-LN get this reply and combine with the original downlink command and uplink. The uplink message is:
647
648 **A8** (% style="color:#4f81bd" %)**0A 08 00 04 00  **(% style="color:red" %)**01 06** ** **(% style="color:green" %)**0A 08 00 04 00 00**
649
650 (% aria-label="1654159460680-153.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1654159460680-153.png||data-widget="image"]](% style="background:url(~"http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png~") rgba(220, 220, 220, 0.5); left:0px; top:-15px" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
651
652
653
654 ==== **Set Payload version** ====
655
656 This is the first byte of the uplink payload. RS485-BL can connect to different sensors. User can set the PAYVER field to tell server how to decode the current payload.
657
658 * **AT Command:**
659
660 (% class="box infomessage" %)
661 (((
662 **AT+PAYVER: Set PAYVER field = 1**
663 )))
664
665 * **Downlink Payload:**
666
667 **0xAE 01**  ~-~-> Set PAYVER field =  0x01
668
669 **0xAE 0F**   ~-~-> Set PAYVER field =  0x0F
670
671
672
673 ==== **Set RS485 Sampling Commands** ====
674
675 AT+COMMANDx or AT+DATACUTx
676
677 These three commands are used to configure how the RS485-LN polling data from Modbus device. Detail of usage please see : [[polling RS485 device>>||anchor="H3.3.3Configurereadcommandsforeachsampling"]].
678
679
680 * **AT Command:**
681
682 (% class="box infomessage" %)
683 (((
684 **AT+COMMANDx: Configure RS485 read command to sensor.**
685 )))
686
687 (% class="box infomessage" %)
688 (((
689 **AT+DATACUTx: Configure how to handle return from RS485 devices.**
690 )))
691
692
693 * **Downlink Payload:**
694
695 **0xAF** downlink command can be used to set AT+COMMANDx or AT+DATACUTx.
696
697 (% style="color:red" %)**Note**(%%): if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.
698
699 Format: AF MM NN LL XX XX XX XX YY
700
701 Where:
702
703 * MM: the ATCOMMAND or AT+DATACUT to be set. Value from 01 ~~ 0F,
704 * NN:  0: no CRC; 1: add CRC-16/MODBUS ; 2: set the AT+DATACUT value.
705 * LL:  The length of AT+COMMAND or AT+DATACUT command
706 * XX XX XX XX: AT+COMMAND or AT+DATACUT command
707 * YY:  If YY=0, RS485-BL will execute the downlink command without uplink; if YY=1, RS485-LN will execute an uplink after got this command.
708
709 **Example:**
710
711 (% style="color:#037691" %)**AF 03 01 06 0A 05 00 04 00 01 00**(%%): Same as AT+COMMAND3=0A 05 00 04 00 01,1
712
713 (% style="color:#037691" %)**AF 03 02 06**(% style="color:orange" %)** 10 **(% style="color:red" %)**01 **(% style="color:green" %)**05 06 09 0A**(% style="color:#037691" %)** 00**(%%): Same as AT+DATACUT3=(% style="color:orange" %)**16**(%%),(% style="color:red" %)**1**(%%),(% style="color:green" %)**5+6+9+10**
714
715 (% style="color:#037691" %)**AF 03 02 06 **(% style="color:orange" %)**0B**(% style="color:red" %)** 02 **(% style="color:green" %)**05 07 08 0A **(% style="color:#037691" %)**00**(%%): Same as AT+DATACUT3=(% style="color:orange" %)**11**(%%),(% style="color:red" %)**2**(%%),(% style="color:green" %)**5~~7+8~~10**
716
717
718
719 ==== **Fast command to handle MODBUS device** ====
720
721 AT+MBFUN is valid since v1.3 firmware version. The command is for fast configure to read Modbus devices. It is only valid for the devices which follow the [[MODBUS-RTU protocol>>url:https://www.modbustools.com/modbus.html]].
722
723 This command is valid since v1.3 firmware version
724
725 AT+MBFUN can auto read the Modbus function code: 01, 02, 03 or 04. AT+MBFUN has lower priority vs AT+DATACUT command. If AT+DATACUT command is configured, AT+MBFUN will be ignore.
726
727
728 **Example:**
729
730 * AT+MBFUN=1 and AT+DATACUT1/AT+DATACUT2 are not configure (0,0,0). So RS485-LN.
731 * AT+COMMAND1= 01 03 00 10 00 08,1 ~-~-> read slave address 01 , function code 03, start address 00 01, quantity of registers 00 08.
732 * AT+COMMAND2= 01 02 00 40 00 10,1 ~-~-> read slave address 01 , function code 02, start address 00 40, quantity of inputs 00 10.
733
734 (% aria-label="image-20220602165351-6.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602165351-6.png||data-widget="image"]](% style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
735
736 (% aria-label="image-20220602165351-7.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602165351-7.png||data-widget="image"]](% style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
737
738
739
740 ==== **RS485 command timeout** ====
741
742 Some Modbus device has slow action to send replies. This command is used to configure the RS485-LN to use longer time to wait for their action.
743
744 Default value: 0, range:  0 ~~ 65 seconds
745
746 * **AT Command:**
747
748 (% class="box infomessage" %)
749 (((
750 **AT+CMDDLaa=hex(bb cc)*1000**
751 )))
752
753 **Example:**
754
755 **AT+CMDDL1=1000** to send the open time to 1000ms
756
757
758 * **Downlink Payload:**
759
760 **0x AA aa bb cc**
761
762 Same as: AT+CMDDLaa=hex(bb cc)*1000
763
764 **Example:**
765
766 0xAA 01 00 01  ~-~-> Same as **AT+CMDDL1=1000 ms**
767
768
769
770 ==== **Uplink payload mode** ====
771
772 Define to use one uplink or multiple uplinks for the sampling.
773
774 The use of this command please see: [[Compose Uplink payload>>||anchor="H3.3.4Composetheuplinkpayload"]]
775
776 * **AT Command:**
777
778 (% class="box infomessage" %)
779 (((
780 **AT+DATAUP=0**
781 )))
782
783 (% class="box infomessage" %)
784 (((
785 **AT+DATAUP=1**
786 )))
787
788
789 * **Downlink Payload:**
790
791 **0xAD 00**  **~-~->** Same as AT+DATAUP=0
792
793 **0xAD 01**  **~-~->** Same as AT+DATAUP=1
794
795
796
797 ==== **Manually trigger an Uplink** ====
798
799 Ask device to send an uplink immediately.
800
801 * **AT Command:**
802
803 No AT Command for this, user can press the [[ACT button>>||anchor="H3.7Buttons"]] for 1 second for the same.
804
805
806 * **Downlink Payload:**
807
808 **0x08 FF**, RS485-LN will immediately send an uplink.
809
810
811
812 ==== **Clear RS485 Command** ====
813
814 The AT+COMMANDx and AT+DATACUTx settings are stored in special location, user can use below command to clear them.
815
816 * **AT Command:**
817
818 **AT+CMDEAR=mm,nn**   mm: start position of erase ,nn: stop position of erase
819
820 Etc. AT+CMDEAR=1,10 means erase AT+COMMAND1/AT+DATACUT1 to AT+COMMAND10/AT+DATACUT10
821
822 Example screen shot after clear all RS485 commands. 
823
824
825 The uplink screen shot is:
826
827 (% aria-label="1654160691922-496.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1654160691922-496.png||data-widget="image"]](% style="background:url(~"http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png~") rgba(220, 220, 220, 0.5); left:0px; top:-15px" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
828
829
830 * **Downlink Payload:**
831
832 **0x09 aa bb** same as AT+CMDEAR=aa,bb
833
834
835
836 ==== **Set Serial Communication Parameters** ====
837
838 Set the Rs485 serial communication parameters:
839
840 * **AT Command:**
841
842 Set Baud Rate:
843
844 (% class="box infomessage" %)
845 (((
846 **AT+BAUDR=9600**    ~/~/ Options: (1200,2400,4800,14400,19200,115200)
847 )))
848
849 Set UART Parity
850
851 (% class="box infomessage" %)
852 (((
853 **AT+PARITY=0**    ~/~/ Option: 0: no parity, 1: odd parity, 2: even parity
854 )))
855
856 Set STOPBIT
857
858 (% class="box infomessage" %)
859 (((
860 **AT+STOPBIT=0**    ~/~/ Option: 0 for 1bit; 1 for 1.5 bit ; 2 for 2 bits
861 )))
862
863
864 * **Downlink Payload:**
865
866 **A7 01 aa bb**: Same  AT+BAUDR=hex(aa bb)*100
867
868 **Example:**
869
870 * A7 01 00 60   same as AT+BAUDR=9600
871 * A7 01 04 80  same as AT+BAUDR=115200
872
873 A7 02 aa: Same as  AT+PARITY=aa  (aa value: 00 , 01 or 02)
874
875 A7 03 aa: Same as  AT+STOPBIT=aa  (aa value: 00 , 01 or 02)
876
877
878 == 3.6 Listening mode for RS485 network ==
879
880 This feature support since firmware v1.4
881
882 RS485-LN supports listening mode, it can listen the RS485 network packets and send them via LoRaWAN uplink. Below is the structure. The blue arrow shows the RS485 network packets to RS485-LN.
883
884 (% aria-label="image-20220602171200-8.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602171200-8.png||data-widget="image" height="567" width="1007"]](% style="background:url(~"http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png~") rgba(220, 220, 220, 0.5); left:0px; top:-15px" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
885
886 To enable the listening mode, use can run the command AT+RXMODE.
887
888
889 (% border="1" style="background-color:#ffffcc; width:500px" %)
890 |=(% style="width: 161px;" %)**Command example:**|=(% style="width: 337px;" %)**Function**
891 |(% style="width:161px" %)AT+RXMODE=1,10 |(% style="width:337px" %)Enable listening mode 1, if RS485-LN has received more than 10 RS485 commands from the network. RS485-LN will send these commands via LoRaWAN uplinks.
892 |(% style="width:161px" %)AT+RXMODE=2,500|(% style="width:337px" %)Enable listening mode 2, RS485-LN will capture and send a 500ms content once from the first detect of character. Max value is 65535 ms
893 |(% style="width:161px" %)AT+RXMODE=0,0|(% style="width:337px" %)Disable listening mode. This is the default settings.
894 |(% style="width:161px" %) |(% style="width:337px" %)A6 aa bb cc  same as AT+RXMODE=aa,(bb<<8 ~| cc)
895
896 **Downlink Command:**
897
898 **0xA6 aa bb cc ** same as AT+RXMODE=aa,(bb<<8 | cc)
899
900
901 **Example**:
902
903 The RS485-LN is set to AT+RXMODE=2,1000
904
905 There is a two Modbus commands in the RS485 network as below:
906
907 The Modbus master send a command: (% style="background-color:#ffc000" %)01 03 00 00 00 02 c4 0b
908
909 And Modbus slave reply with: (% style="background-color:green" %)01 03 04 00 00 00 00 fa 33
910
911 RS485-LN will capture both and send the uplink: (% style="background-color:#ffc000" %)01 03 00 00 00 02 c4 0b  (% style="background-color:green" %)01 03 04 00 00 00 00 fa 33
912
913 (% aria-label="image-20220602171200-9.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602171200-9.png||data-widget="image"]](% style="background:url(~"http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png~") rgba(220, 220, 220, 0.5); left:0px; top:-15px" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
914
915
916 (% style="color:red" %)Notice: Listening mode can work with the default polling mode of RS485-LN. When RS485-LN is in to send the RS485 commands (from AT+COMMANDx), the listening mode will be interrupt for a while.
917
918
919 == 3.7 Buttons ==
920
921
922 (% border="1" style="background-color:#f7faff; width:500px" %)
923 |=**Button**|=(% style="width: 1420px;" %)**Feature**
924 |**ACT**|(% style="width:1420px" %)If RS485 joined in network, press this button for more than 1 second, RS485 will upload a packet, and the SYS LED will give a (% style="color:blue" %)**Blue blink**
925 |**RST**|(% style="width:1420px" %)Reboot RS485
926 |**PRO**|(% style="width:1420px" %)Use for upload image, see [[How to Update Image>>path:#upgrade_image]]
927
928
929
930 == 3.8 LEDs ==
931
932 (% border="1" style="background-color:#f7faff; width:500px" %)
933 |=**LEDs**|=**Feature**
934 |**PWR**|Always on if there is power
935 |**SYS**|After device is powered on, the SYS will (% style="color:green" %)**fast blink in GREEN** (%%)for 5 times, means RS485-LN start to join LoRaWAN network. If join success, SYS will be (% style="color:green" %)**on GREEN for 5 seconds**(%%)**. **SYS will (% style="color:green" %)**blink Blue**(%%) on every upload and (% style="color:green" %)**blink Green**(%%) once receive a downlink message.
936
937 = 4. Case Study =
938
939 User can check this URL for some case studies: [[APP RS485 COMMUNICATE WITH SENSORS>>doc:Main.Application Note \: Communicate with Different Sensors ----- RS485-LN RS485-BL.WebHome]]
940
941
942 = 5. Use AT Command =
943
944 == 5.1 Access AT Command ==
945
946 RS485-BL supports AT Command set. User can use a USB to TTL adapter plus the 3.5mm Program Cable to connect to RS485-BL to use AT command, as below.
947
948 (% aria-label="1654162355560-817.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1654162355560-817.png||data-widget="image"]](% style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
949
950
951 In PC, User needs to set (% style="color:blue" %)**serial tool**(%%)(such as [[putty>>url:https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]], SecureCRT) baud rate to (% style="color:green" %)**9600**(%%) to access to access serial console of RS485-BL. The default password is 123456. Below is the output for reference:
952
953 (% aria-label="1654162368066-342.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1654162368066-342.png||data-widget="image"]](% style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
954
955
956 More detail AT Command manual can be found at [[AT Command Manual>>||anchor="3.5ConfigureRS485-BLviaATorDownlink"]]
957
958
959 == 5.2 Common AT Command Sequence ==
960
961 === 5.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
962
963 If device has not joined network yet:
964
965 (% class="box infomessage" %)
966 (((
967 **AT+FDR**
968 )))
969
970 (% class="box infomessage" %)
971 (((
972 **AT+NJM=0**
973 )))
974
975 (% class="box infomessage" %)
976 (((
977 **ATZ**
978 )))
979
980
981 If device already joined network:
982
983 (% class="box infomessage" %)
984 (((
985 **AT+NJM=0**
986 )))
987
988 (% class="box infomessage" %)
989 (((
990 **ATZ**
991 )))
992
993
994 === 5.5.2 Single-channel ABP mode (Use with LG01/LG02) ===
995
996
997 (% style="background-color:#dcdcdc" %)**AT+FDR** (%%) Reset Parameters to Factory Default, Keys Reserve
998
999 (% style="background-color:#dcdcdc" %)**AT+NJM=0 **(%%)Set to ABP mode
1000
1001 (% style="background-color:#dcdcdc" %)**AT+ADR=0** (%%)Set the Adaptive Data Rate Off
1002
1003 (% style="background-color:#dcdcdc" %)**AT+DR=5**   (%%)Set Data Rate
1004
1005 (% style="background-color:#dcdcdc" %)**AT+TDC=60000** (%%) Set transmit interval to 60 seconds
1006
1007 (% style="background-color:#dcdcdc" %)**AT+CHS=868400000**(%%) Set transmit frequency to 868.4Mhz
1008
1009 (% style="background-color:#dcdcdc" %)**AT+RX2FQ=868400000** (%%) Set RX2Frequency to 868.4Mhz (according to the result from server)
1010
1011 (% style="background-color:#dcdcdc" %)**AT+RX2DR=5**  (%%) Set RX2DR to match the downlink DR from server. see below
1012
1013 (% style="background-color:#dcdcdc" %)**AT+DADDR=26** (%%) 01 1A F1 Set Device Address to 26 01 1A F1, this ID can be found in the LoRa Server portal.
1014
1015 (% style="background-color:#dcdcdc" %)**ATZ**       (%%) Reset MCU
1016
1017
1018 (% style="color:red" %)**Note:**
1019
1020 (% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server.
1021 2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
1022 3. Make sure SF / bandwidth setting in LG01/LG02 match the settings of AT+DR. refer [[this link>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_Gateway/&file=LoRaWAN%201.0.3%20Regional%20Parameters.xlsx]] to see what DR means.
1023 4. The command AT+RX2FQ and AT+RX2DR is to let downlink work. to set the correct parameters, user can check the actually downlink parameters to be used. As below. Which shows the RX2FQ should use 868400000 and RX2DR should be 5
1024
1025 (% aria-label="1654162478620-421.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1654162478620-421.png||data-widget="image"]](% style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
1026
1027
1028 = 6. FAQ =
1029
1030 == 6.1 How to upgrade the image? ==
1031
1032 The RS485-LN LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to RS485-LN to:
1033
1034 * Support new features
1035 * For bug fix
1036 * Change LoRaWAN bands.
1037
1038 Below shows the hardware connection for how to upload an image to RS485-LN:
1039
1040 (% aria-label="1654162535040-878.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1654162535040-878.png||data-widget="image"]](% style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
1041
1042 **Step1:** Download [[flash loader>>url:https://www.st.com/content/st_com/en/products/development-tools/software-development-tools/stm32-software-development-tools/stm32-programmers/flasher-stm32.html]].
1043
1044 **Step2**: Download the [[LT Image files>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]].
1045
1046 **Step3: **Open flashloader; choose the correct COM port to update.
1047
1048 (% style="color:blue" %) Hold down the PRO button and then momentarily press the RST reset button and the SYS led will change from OFF to ON, While SYS LED is RED ON, it means the RS485-LN is ready to be program.
1049
1050
1051 (% aria-label="image-20220602175818-12.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602175818-12.png||data-widget="image"]](% style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
1052
1053
1054 (% aria-label="image-20220602175848-13.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602175848-13.png||data-widget="image"]](% style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
1055
1056
1057 (% aria-label="image-20220602175912-14.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602175912-14.png||data-widget="image"]](% style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
1058
1059
1060 **Notice**: In case user has lost the program cable. User can hand made one from a 3.5mm cable. The pin mapping is:
1061
1062 (% aria-label="image-20220602175638-10.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602175638-10.png||data-widget="image"]](% style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
1063
1064
1065 == 6.2 How to change the LoRa Frequency Bands/Region? ==
1066
1067 User can follow the introduction for [[how to upgrade image>>||anchor="H6.1Howtoupgradetheimage3F"]]. When download the images, choose the required image file for download.
1068
1069
1070 == 6.3 How many RS485-Slave can RS485-BL connects? ==
1071
1072 The RS485-BL can support max 32 RS485 devices. Each uplink command of RS485-BL can support max 16 different RS485 command. So RS485-BL can support max 16 RS485 devices pre-program in the device for uplink. For other devices no pre-program, user can use the [[downlink message (type code 0xA8) to poll their info>>||anchor="H3.3.3Configurereadcommandsforeachsampling"]].
1073
1074
1075 == 6.4 Compatible question to ChirpStack and TTI LoRaWAN server ? ==
1076
1077 When user need to use with ChirpStack or TTI. Please set AT+RPL=4.
1078
1079 Detail info check this link: [[Set Packet Receiving Response Level>>doc:Main.End Device AT Commands and Downlink Command.WebHome||anchor="H7.23SetPacketReceivingResponseLevel"]]
1080
1081
1082 = 7. Trouble Shooting =
1083
1084 == 7.1 Downlink doesn’t work, how to solve it? ==
1085
1086 Please see this link for debug: [[LoRaWAN Communication Debug>>doc:Main.LoRaWAN Communication Debug.WebHome]]
1087
1088
1089 == 7.2 Why I can’t join TTN V3 in US915 /AU915 bands? ==
1090
1091 It might about the channels mapping. Please see for detail: [[Notice of Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
1092
1093
1094 = 8. Order Info =
1095
1096 (% style="color:blue" %)**Part Number: RS485-LN-XXX**
1097
1098 (% style="color:blue" %)**XXX:**
1099
1100 * (% style="color:blue" %)**EU433**(%%): frequency bands EU433
1101 * (% style="color:blue" %)**EU868**(%%): frequency bands EU868
1102 * (% style="color:blue" %)**KR920**(%%): frequency bands KR920
1103 * (% style="color:blue" %)**CN470**(%%): frequency bands CN470
1104 * (% style="color:blue" %)**AS923**(%%): frequency bands AS923
1105 * (% style="color:blue" %)**AU915**(%%): frequency bands AU915
1106 * (% style="color:blue" %)**US915**(%%): frequency bands US915
1107 * (% style="color:blue" %)**IN865**(%%): frequency bands IN865
1108 * (% style="color:blue" %)**RU864**(%%): frequency bands RU864
1109 * (% style="color:blue" %)**KZ865**(%%): frequency bands KZ865
1110
1111 = 9.Packing Info =
1112
1113
1114 **Package Includes**:
1115
1116 * RS485-LN x 1
1117 * Stick Antenna for LoRa RF part x 1
1118 * Program cable x 1
1119
1120 **Dimension and weight**:
1121
1122 * Device Size: 13.5 x 7 x 3 cm
1123 * Device Weight: 105g
1124 * Package Size / pcs : 14.5 x 8 x 5 cm
1125 * Weight / pcs : 170g
1126
1127 = 10. FCC Caution for RS485LN-US915 =
1128
1129 Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
1130
1131 This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
1132
1133
1134 **IMPORTANT NOTE:**
1135
1136 **Note: **This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
1137
1138 —Reorient or relocate the receiving antenna.
1139
1140 —Increase the separation between the equipment and receiver.
1141
1142 —Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
1143
1144 —Consult the dealer or an experienced radio/TV technician for help.
1145
1146
1147 **FCC Radiation Exposure Statement:**
1148
1149 This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment.This equipment should be installed and operated with minimum distance 20cm between the radiator& your body.
1150
1151
1152 = 11. Support =
1153
1154 * Support is provided Monday to Friday, from 09:00 to 18:00 GMT+8. Due to different timezones we cannot offer live support. However, your questions will be answered as soon as possible in the before-mentioned schedule.
1155 * Provide as much information as possible regarding your enquiry (product models, accurately describe your problem and steps to replicate it etc) and send a mail to [[support@dragino.com>>url:file:///D:/市场资料/说明书/LoRa/LT系列/support@dragino.com]].