Last modified by Karry Zhuang on 2025/03/06 16:34
<
From version < 18.2 >
edited by Xiaoling
on 2022/05/23 08:49
To version < 29.1 >
edited by Xiaoling
on 2022/05/23 09:35
>
Change comment: Uploaded new attachment "1653269759169-150.png", version {1}

Summary

Details

Page properties
Content
... ... @@ -14,42 +14,28 @@
14 14  
15 15  = 1.Introduction =
16 16  
17 -== 1.1 What is RS485-BL RS485 to LoRaWAN Converter ==
17 +== 1.1 What is RS485-LN RS485 to LoRaWAN Converter ==
18 18  
19 19  (((
20 -
21 -)))
22 -
23 23  (((
24 -The Dragino RS485-BL is a **RS485 / UART to LoRaWAN Converter** for Internet of Things solutions. User can connect RS485 or UART sensor to RS485-BL converter, and configure RS485-BL to periodically read sensor data and upload via LoRaWAN network to IoT server.
21 +The Dragino RS485-LN is a RS485 to LoRaWAN Converter. It converts the RS485 signal into LoRaWAN wireless signal which simplify the IoT installation and reduce the installation/maintaining cost.
25 25  )))
26 26  
27 27  (((
28 -RS485-BL can interface to RS485 sensor, 3.3v/5v UART sensor or interrupt sensor. RS485-BL provides **a 3.3v output** and** a 5v output** to power external sensors. Both output voltages are controllable to minimize the total system power consumption.
25 +RS485-LN allows user to 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.
29 29  )))
30 30  
31 31  (((
32 -RS485-BL is IP67 **waterproof** and powered by **8500mAh Li-SOCI2 battery**, it is designed for long term use for several years.
29 +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.
33 33  )))
34 34  
35 35  (((
36 -RS485-BL runs standard **LoRaWAN 1.0.3 in Class A**. It can reach long transfer range and easy to integrate with LoRaWAN compatible gateway and IoT server.
33 +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.
37 37  )))
38 -
39 -(((
40 -For data uplink, RS485-BL sends user-defined commands to RS485 devices and gets the return from the RS485 devices. RS485-BL will process these returns data according to user-define rules to get the final payload and upload to LoRaWAN server.
41 41  )))
42 42  
43 -(((
44 -For data downlink, RS485-BL runs in LoRaWAN Class A. When there is downlink commands from LoRaWAN server, RS485-BL will forward the commands from LoRaWAN server to RS485 devices.
45 -)))
37 +[[image:1653267211009-519.png||height="419" width="724"]]
46 46  
47 -(((
48 -Each RS485-BL pre-load with a set of unique keys for LoRaWAN registration, register these keys to LoRaWAN server and it will auto connect after power on.
49 -)))
50 -
51 -[[image:1652953304999-717.png||height="424" width="733"]]
52 -
53 53  == 1.2 Specifications ==
54 54  
55 55  **Hardware System:**
... ... @@ -57,19 +57,15 @@
57 57  * STM32L072CZT6 MCU
58 58  * SX1276/78 Wireless Chip 
59 59  * Power Consumption (exclude RS485 device):
60 -** Idle: 6uA@3.3v
46 +** Idle: 32mA@12v
61 61  
62 -*
63 -** 20dB Transmit: 130mA@3.3v
48 +*
49 +** 20dB Transmit: 65mA@12v
64 64  
65 65  **Interface for Model:**
66 66  
67 -* 1 x RS485 Interface
68 -* 1 x TTL Serial , 3.3v or 5v.
69 -* 1 x I2C Interface, 3.3v or 5v.
70 -* 1 x one wire interface
71 -* 1 x Interrupt Interface
72 -* 1 x Controllable 5V output, max
53 +* RS485
54 +* Power Input 7~~ 24V DC. 
73 73  
74 74  **LoRa Spec:**
75 75  
... ... @@ -78,27 +78,30 @@
78 78  ** Band 2 (LF): 410 ~~ 528 Mhz
79 79  * 168 dB maximum link budget.
80 80  * +20 dBm - 100 mW constant RF output vs.
63 +* +14 dBm high efficiency PA.
81 81  * Programmable bit rate up to 300 kbps.
82 82  * High sensitivity: down to -148 dBm.
83 83  * Bullet-proof front end: IIP3 = -12.5 dBm.
84 84  * Excellent blocking immunity.
68 +* Low RX current of 10.3 mA, 200 nA register retention.
85 85  * Fully integrated synthesizer with a resolution of 61 Hz.
86 -* LoRa modulation.
70 +* FSK, GFSK, MSK, GMSK, LoRaTM and OOK modulation.
87 87  * Built-in bit synchronizer for clock recovery.
88 88  * Preamble detection.
89 89  * 127 dB Dynamic Range RSSI.
90 -* Automatic RF Sense and CAD with ultra-fast AFC. ​​​
74 +* Automatic RF Sense and CAD with ultra-fast AFC.
75 +* Packet engine up to 256 bytes with CRC.
91 91  
92 92  == 1.3 Features ==
93 93  
94 -* LoRaWAN Class A & Class C protocol (default Class A)
79 +* LoRaWAN Class A & Class C protocol (default Class C)
95 95  * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865/RU864
96 96  * AT Commands to change parameters
97 -* Remote configure parameters via LoRaWAN Downlink
82 +* Remote configure parameters via LoRa Downlink
98 98  * Firmware upgradable via program port
99 99  * Support multiply RS485 devices by flexible rules
100 100  * Support Modbus protocol
101 -* Support Interrupt uplink
86 +* Support Interrupt uplink (Since hardware version v1.2)
102 102  
103 103  == 1.4 Applications ==
104 104  
... ... @@ -111,53 +111,39 @@
111 111  
112 112  == 1.5 Firmware Change log ==
113 113  
114 -[[RS485-BL Image files – Download link and Change log>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/RS485-BL/Firmware/||style="background-color: rgb(255, 255, 255);"]]
99 +[[RS485-LN Image files – Download link and Change log>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/]]
115 115  
116 116  == 1.6 Hardware Change log ==
117 117  
118 118  (((
119 -v1.4
120 -)))
121 -
122 122  (((
123 -~1. Change Power IC to TPS22916
124 -)))
105 +v1.2: Add External Interrupt Pin.
125 125  
126 -
127 -(((
128 -v1.3
107 +v1.0: Release
129 129  )))
130 -
131 -(((
132 -~1. Change JP3 from KF350-8P to KF350-11P, Add one extra interface for I2C and one extra interface for one-wire
133 133  )))
134 134  
111 += 2. Power ON Device =
135 135  
136 136  (((
137 -v1.2
138 -)))
114 +The RS485-LN can be powered by 7 ~~ 24V DC power source. Connection as below
139 139  
116 +* Power Source VIN to RS485-LN VIN+
117 +* Power Source GND to RS485-LN VIN-
118 +
140 140  (((
141 -Release version ​​​​​
120 +Once there is power, the RS485-LN will be on.
142 142  )))
143 143  
144 -= 2. Pin mapping and Power ON Device =
145 -
146 -(((
147 -The RS485-BL is powered on by 8500mAh battery. To save battery life, RS485-BL is shipped with power off. User can put the jumper to power on RS485-BL.
123 +[[image:1653268091319-405.png]]
148 148  )))
149 149  
150 -[[image:1652953055962-143.png||height="387" width="728"]]
151 -
152 -
153 -The Left TXD and RXD are TTL interface for external sensor. TTL level is controlled by 3.3/5v Jumper.
154 -
155 155  = 3. Operation Mode =
156 156  
157 157  == 3.1 How it works? ==
158 158  
159 159  (((
160 -The RS485-BL is configured as LoRaWAN OTAA Class A 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-BL. It will auto join the network via OTAA.
131 +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.
161 161  )))
162 162  
163 163  == 3.2 Example to join LoRaWAN network ==
... ... @@ -164,27 +164,32 @@
164 164  
165 165  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. 
166 166  
167 -[[image:1652953414711-647.png||height="337" width="723"]]
138 +[[image:1653268155545-638.png||height="334" width="724"]]
168 168  
169 169  (((
170 -The RS485-BL in this example connected to two RS485 devices for demonstration, user can connect to other RS485 devices via the same method.
171 -)))
141 +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:
172 172  
143 +485A+ and 485B- of the sensor are connected to RS485A and RA485B of RS485-LN respectively.
144 +
145 +[[image:1653268227651-549.png||height="592" width="720"]]
146 +
173 173  (((
174 -The LG308 is already set to connect to [[TTN V3 network >>url:https://www.thethingsnetwork.org/]]. So what we need to now is only configure the TTN V3:
148 +The LG308 is already set to connect to [[TTN V3 network >>path:eu1.cloud.thethings.network/]]. So what we need to now is only configure the TTN V3:
175 175  )))
176 176  
177 177  (((
178 -**Step 1**: Create a device in TTN V3 with the OTAA keys from RS485-BL.
152 +**Step 1**: Create a device in TTN V3 with the OTAA keys from RS485-LN.
179 179  )))
180 180  
181 181  (((
182 -Each RS485-BL is shipped with a sticker with unique device EUI:
156 +Each RS485-LN is shipped with a sticker with unique device EUI:
183 183  )))
158 +)))
184 184  
185 185  [[image:1652953462722-299.png]]
186 186  
187 187  (((
163 +(((
188 188  User can enter this key in their LoRaWAN Server portal. Below is TTN V3 screen shot:
189 189  )))
190 190  
... ... @@ -191,13 +191,11 @@
191 191  (((
192 192  Add APP EUI in the application.
193 193  )))
170 +)))
194 194  
195 -
196 -
197 -
198 198  [[image:image-20220519174512-1.png]]
199 199  
200 -[[image:image-20220519174512-2.png||height="328" width="731"]]
174 +[[image:image-20220519174512-2.png||height="323" width="720"]]
201 201  
202 202  [[image:image-20220519174512-3.png||height="556" width="724"]]
203 203  
... ... @@ -213,7 +213,7 @@
213 213  
214 214  
215 215  (((
216 -**Step 2**: Power on RS485-BL 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.
190 +**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.
217 217  )))
218 218  
219 219  [[image:1652953568895-172.png||height="232" width="724"]]
... ... @@ -221,23 +221,19 @@
221 221  == 3.3 Configure Commands to read data ==
222 222  
223 223  (((
224 -There are plenty of RS485 and TTL level devices in the market and each device has different command to read the valid data. To support these devices in flexible, RS485-BL supports flexible command set. User can use [[AT Commands or LoRaWAN Downlink>>path:#AT_COMMAND]] Command to configure how RS485-BL should read the sensor and how to handle the return from RS485 or TTL sensors.
198 +(((
199 +There are plenty of RS485 devices in the market and each device has different command to read the valid data. To support these devices in flexible, RS485-LN supports flexible command set. User can use [[AT Commands>>path:#AT_COMMAND]] or LoRaWAN Downlink Command to configure what commands RS485-LN should send for each sampling and how to handle the return from RS485 devices.
225 225  )))
226 226  
202 +(((
203 +(% 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
204 +)))
205 +)))
206 +
227 227  === 3.3.1 onfigure UART settings for RS485 or TTL communication ===
228 228  
229 -RS485-BL can connect to either RS485 sensors or TTL sensor. User need to specify what type of sensor need to connect.
209 +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:
230 230  
231 -**~1. RS485-MODBUS mode:**
232 -
233 -AT+MOD=1 ~/~/ Support RS485-MODBUS type sensors. User can connect multiply RS485 , Modbus sensors to the A / B pins.
234 -
235 -**2. TTL mode:**
236 -
237 -AT+MOD=2 ~/~/ Support TTL Level sensors, User can connect one TTL Sensor to the TXD/RXD/GND pins.
238 -
239 -RS485-BL default UART settings is **9600, no parity, stop bit 1**. If the sensor has a different settings, user can change the RS485-BL setting to match.
240 -
241 241  (% border="1" style="background-color:#ffffcc; color:green; width:795px" %)
242 242  |(((
243 243  **AT Commands**
... ... @@ -262,13 +262,7 @@
262 262  |(((
263 263  AT+PARITY
264 264  )))|(% style="width:285px" %)(((
265 -(((
266 266  Set UART parity (for RS485 connection)
267 -)))
268 -
269 -(((
270 -Default Value is: no parity.
271 -)))
272 272  )))|(% style="width:347px" %)(((
273 273  (((
274 274  AT+PARITY=0
... ... @@ -286,7 +286,7 @@
286 286  )))
287 287  
288 288  (((
289 -Default Value is: 1bit.
253 +
290 290  )))
291 291  )))|(% style="width:347px" %)(((
292 292  (((
... ... @@ -305,12 +305,10 @@
305 305  === 3.3.2 Configure sensors ===
306 306  
307 307  (((
308 -Some sensors might need to configure before normal operation. User can configure such sensor via PC or through RS485-BL AT Commands (% style="color:#4f81bd" %)**AT+CFGDEV**.
309 -)))
310 -
311 311  (((
312 -When user issue an (% style="color:#4f81bd" %)**AT+CFGDEV**(%%) command, Each (% style="color:#4f81bd" %)**AT+CFGDEV**(%%) equals to send a command to the RS485 or TTL sensors. This command will only run when user input it and won’t run during each sampling.
273 +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.
313 313  )))
275 +)))
314 314  
315 315  (% border="1" style="background-color:#ffffcc; color:green; width:806px" %)
316 316  |**AT Commands**|(% style="width:418px" %)**Description**|(% style="width:256px" %)**Example**
... ... @@ -322,8 +322,6 @@
322 322  mm: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
323 323  )))|(% style="width:256px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
324 324  
325 -Detail of AT+CFGDEV command see [[AT+CFGDEV detail>>path:#AT_CFGDEV]].
326 -
327 327  === 3.3.3 Configure read commands for each sampling ===
328 328  
329 329  (((
... ... @@ -490,7 +490,7 @@
490 490  
491 491  
492 492  1.
493 -11.
453 +11.
494 494  111. Compose the uplink payload
495 495  
496 496  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.**
... ... @@ -554,8 +554,8 @@
554 554  
555 555  
556 556  
557 -1.
558 -11.
517 +1.
518 +11.
559 559  111. Uplink on demand
560 560  
561 561  Except uplink periodically, RS485-BL is able to uplink on demand. The server sends downlink command to RS485-BL and RS485 will uplink data base on the command.
... ... @@ -568,8 +568,8 @@
568 568  
569 569  
570 570  
571 -1.
572 -11.
531 +1.
532 +11.
573 573  111. Uplink on Interrupt
574 574  
575 575  Put the interrupt sensor between 3.3v_out and GPIO ext.[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image022.png]]
... ... @@ -583,7 +583,7 @@
583 583  AT+INTMOD=3  Interrupt trigger by rising edge.
584 584  
585 585  
586 -1.
546 +1.
587 587  11. Uplink Payload
588 588  
589 589  |**Size(bytes)**|**2**|**1**|**Length depends on the return from the commands**
... ... @@ -645,15 +645,15 @@
645 645  
646 646  * **Sensor Related Commands**: These commands are special designed for RS485-BL.  User can see these commands below:
647 647  
648 -1.
649 -11.
608 +1.
609 +11.
650 650  111. Common Commands:
651 651  
652 652  They should be available for each of Dragino Sensors, such as: change uplink interval, reset device. For firmware v1.3, user can find what common commands it supports: [[http:~~/~~/wiki.dragino.com/index.php?title=End_Device_AT_Commands_and_Downlink_Commands>>url:http://wiki.dragino.com/index.php?title=End_Device_AT_Commands_and_Downlink_Commands]]
653 653  
654 654  
655 -1.
656 -11.
615 +1.
616 +11.
657 657  111. Sensor related commands:
658 658  
659 659  ==== Choose Device Type (RS485 or TTL) ====
... ... @@ -959,13 +959,13 @@
959 959  
960 960  
961 961  
962 -1.
922 +1.
963 963  11. Buttons
964 964  
965 965  |**Button**|**Feature**
966 966  |**RST**|Reboot RS485-BL
967 967  
968 -1.
928 +1.
969 969  11. +3V3 Output
970 970  
971 971  RS485-BL has a Controllable +3V3 output, user can use this output to power external sensor.
... ... @@ -983,7 +983,7 @@
983 983  By default, the AT+3V3T=0. This is a special case, means the +3V3 output is always on at any time
984 984  
985 985  
986 -1.
946 +1.
987 987  11. +5V Output
988 988  
989 989  RS485-BL has a Controllable +5V output, user can use this output to power external sensor.
... ... @@ -1003,13 +1003,13 @@
1003 1003  
1004 1004  
1005 1005  
1006 -1.
966 +1.
1007 1007  11. LEDs
1008 1008  
1009 1009  |**LEDs**|**Feature**
1010 1010  |**LED1**|Blink when device transmit a packet.
1011 1011  
1012 -1.
972 +1.
1013 1013  11. Switch Jumper
1014 1014  
1015 1015  |**Switch Jumper**|**Feature**
... ... @@ -1055,7 +1055,7 @@
1055 1055  
1056 1056  
1057 1057  
1058 -1.
1018 +1.
1059 1059  11. Common AT Command Sequence
1060 1060  111. Multi-channel ABP mode (Use with SX1301/LG308)
1061 1061  
... ... @@ -1074,8 +1074,8 @@
1074 1074  
1075 1075  ATZ
1076 1076  
1077 -1.
1078 -11.
1037 +1.
1038 +11.
1079 1079  111. Single-channel ABP mode (Use with LG01/LG02)
1080 1080  
1081 1081  AT+FDR   Reset Parameters to Factory Default, Keys Reserve
... ... @@ -1150,7 +1150,7 @@
1150 1150  [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image035.png]] [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image036.png]]
1151 1151  
1152 1152  
1153 -1.
1113 +1.
1154 1154  11. How to change the LoRa Frequency Bands/Region?
1155 1155  
1156 1156  User can follow the introduction for [[how to upgrade image>>path:#upgrade_image]]. When download the images, choose the required image file for download.
... ... @@ -1157,7 +1157,7 @@
1157 1157  
1158 1158  
1159 1159  
1160 -1.
1120 +1.
1161 1161  11. How many RS485-Slave can RS485-BL connects?
1162 1162  
1163 1163  The RS485-BL can support max 32 RS485 devices. Each uplink command of RS485-BL can support max 16 different RS485 command. So RS485-BL can support max 16 RS485 devices pre-program in the device for uplink. For other devices no pre-program, user can use the [[downlink message (type code 0xA8) to poll their info>>path:#downlink_A8]].
... ... @@ -1174,7 +1174,7 @@
1174 1174  
1175 1175  
1176 1176  
1177 -1.
1137 +1.
1178 1178  11. Why I can’t join TTN V3 in US915 /AU915 bands?
1179 1179  
1180 1180  It might about the channels mapping. Please see for detail.
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