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Title
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1 -RS485-LN – RS485 to LoRaWAN Converter
1 +RS485-BL – Waterproof RS485 to LoRaWAN Converter
Content
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1 1  (% style="text-align:center" %)
2 -[[image:1653266934636-343.png||height="385" width="385"]]
2 +[[image:1652947681187-144.png||height="385" width="385"]]
3 3  
4 4  
5 5  
6 -**RS485-LN – RS485 to LoRaWAN Converter User Manual**
7 7  
7 +**RS485-BL – Waterproof RS485 to LoRaWAN Converter User Manual**
8 8  
9 +
9 9  **Table of Contents:**
10 10  
11 11  
... ... @@ -14,44 +14,62 @@
14 14  
15 15  = 1.Introduction =
16 16  
17 -== 1.1 What is RS485-LN RS485 to LoRaWAN Converter ==
18 +== 1.1 What is RS485-BL RS485 to LoRaWAN Converter ==
18 18  
19 19  (((
21 +
22 +)))
23 +
20 20  (((
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 +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.
22 22  )))
23 23  
24 24  (((
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 +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.
26 26  )))
27 27  
28 28  (((
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 +RS485-BL is IP67 **waterproof** and powered by **8500mAh Li-SOCI2 battery**, it is designed for long term use for several years.
30 30  )))
31 31  
32 32  (((
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 +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.
34 34  )))
39 +
40 +(((
41 +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.
35 35  )))
36 36  
37 -[[image:1653267211009-519.png||height="419" width="724"]]
44 +(((
45 +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.
46 +)))
38 38  
48 +(((
49 +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.
50 +)))
51 +
52 +[[image:1652953304999-717.png||height="424" width="733"]]
53 +
39 39  == 1.2 Specifications ==
40 40  
41 41  **Hardware System:**
42 42  
43 43  * STM32L072CZT6 MCU
44 -* SX1276/78 Wireless Chip
59 +* SX1276/78 Wireless Chip 
45 45  * Power Consumption (exclude RS485 device):
46 -** Idle: 32mA@12v
61 +** Idle: 6uA@3.3v
47 47  
48 -*
49 -** 20dB Transmit: 65mA@12v
63 +*
64 +** 20dB Transmit: 130mA@3.3v
50 50  
51 51  **Interface for Model:**
52 52  
53 -* RS485
54 -* Power Input 7~~ 24V DC.
68 +* 1 x RS485 Interface
69 +* 1 x TTL Serial , 3.3v or 5v.
70 +* 1 x I2C Interface, 3.3v or 5v.
71 +* 1 x one wire interface
72 +* 1 x Interrupt Interface
73 +* 1 x Controllable 5V output, max
55 55  
56 56  **LoRa Spec:**
57 57  
... ... @@ -60,30 +60,27 @@
60 60  ** Band 2 (LF): 410 ~~ 528 Mhz
61 61  * 168 dB maximum link budget.
62 62  * +20 dBm - 100 mW constant RF output vs.
63 -* +14 dBm high efficiency PA.
64 64  * Programmable bit rate up to 300 kbps.
65 65  * High sensitivity: down to -148 dBm.
66 66  * Bullet-proof front end: IIP3 = -12.5 dBm.
67 67  * Excellent blocking immunity.
68 -* Low RX current of 10.3 mA, 200 nA register retention.
69 69  * Fully integrated synthesizer with a resolution of 61 Hz.
70 -* FSK, GFSK, MSK, GMSK, LoRaTM and OOK modulation.
87 +* LoRa modulation.
71 71  * Built-in bit synchronizer for clock recovery.
72 72  * Preamble detection.
73 73  * 127 dB Dynamic Range RSSI.
74 -* Automatic RF Sense and CAD with ultra-fast AFC.
75 -* Packet engine up to 256 bytes with CRC.
91 +* Automatic RF Sense and CAD with ultra-fast AFC. ​​​
76 76  
77 77  == 1.3 Features ==
78 78  
79 -* LoRaWAN Class A & Class C protocol (default Class C)
95 +* LoRaWAN Class A & Class C protocol (default Class A)
80 80  * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865/RU864
81 81  * AT Commands to change parameters
82 -* Remote configure parameters via LoRa Downlink
98 +* Remote configure parameters via LoRaWAN Downlink
83 83  * Firmware upgradable via program port
84 84  * Support multiply RS485 devices by flexible rules
85 85  * Support Modbus protocol
86 -* Support Interrupt uplink (Since hardware version v1.2)
102 +* Support Interrupt uplink
87 87  
88 88  == 1.4 Applications ==
89 89  
... ... @@ -96,18 +96,36 @@
96 96  
97 97  == 1.5 Firmware Change log ==
98 98  
99 -[[RS485-LN Image files – Download link and Change log>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/]]
115 +[[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);"]]
100 100  
101 101  == 1.6 Hardware Change log ==
102 102  
103 103  (((
120 +v1.4
121 +)))
122 +
104 104  (((
105 -v1.2: Add External Interrupt Pin.
124 +~1. Change Power IC to TPS22916
125 +)))
106 106  
107 -v1.0: Release
127 +
128 +(((
129 +v1.3
108 108  )))
131 +
132 +(((
133 +~1. Change JP3 from KF350-8P to KF350-11P, Add one extra interface for I2C and one extra interface for one-wire
109 109  )))
110 110  
136 +
137 +(((
138 +v1.2
139 +)))
140 +
141 +(((
142 +Release version ​​​​​
143 +)))
144 +
111 111  = 2. Pin mapping and Power ON Device =
112 112  
113 113  (((
... ... @@ -269,101 +269,87 @@
269 269  )))
270 270  )))
271 271  
272 -=== 3.3.2 Configure sensors ===
273 273  
274 -(((
275 -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**.
276 -)))
277 277  
278 -(((
279 -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.
280 -)))
281 281  
282 -(% border="1" style="background-color:#ffffcc; color:green; width:806px" %)
283 -|**AT Commands**|(% style="width:418px" %)**Description**|(% style="width:256px" %)**Example**
284 -|AT+CFGDEV|(% style="width:418px" %)(((
309 +1.
310 +11.
311 +111. Configure sensors
312 +
313 +Some sensors might need to configure before normal operation. User can configure such sensor via PC or through RS485-BL AT Commands AT+CFGDEV.
314 +
315 +
316 +When user issue an AT+CFGDEV command, Each 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.
317 +
318 +|**AT Commands**|**Description**|**Example**
319 +|AT+CFGDEV|(((
285 285  This command is used to configure the RS485/TTL devices; they won’t be used during sampling.
286 286  
287 -AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,
322 +AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
288 288  
289 -mm: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
290 -)))|(% style="width:256px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
324 +m: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
325 +)))|AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
291 291  
292 292  Detail of AT+CFGDEV command see [[AT+CFGDEV detail>>path:#AT_CFGDEV]].
293 293  
294 -=== 3.3.3 Configure read commands for each sampling ===
295 295  
296 -(((
330 +
331 +
332 +
333 +1.
334 +11.
335 +111. Configure read commands for each sampling
336 +
297 297  RS485-BL is a battery powered device; it will sleep most of time. And wake up on each period and read RS485 / TTL sensor data and uplink.
298 -)))
299 299  
300 -(((
339 +
301 301  During each sampling, we need to confirm what commands we need to send to the sensors to read data. After the RS485/TTL sensors send back the value, it normally includes some bytes and we only need a few from them for a shorten payload.
302 -)))
303 303  
304 -(((
342 +
305 305  To save the LoRaWAN network bandwidth, we might need to read data from different sensors and combine their valid value into a short payload.
306 -)))
307 307  
308 -(((
345 +
309 309  This section describes how to achieve above goals.
310 -)))
311 311  
312 -(((
348 +
313 313  During each sampling, the RS485-BL can support 15 commands to read sensors. And combine the return to one or several uplink payloads.
314 -)))
315 315  
316 -(((
351 +
317 317  **Command from RS485-BL to Sensor:**
318 -)))
319 319  
320 -(((
321 321  RS485-BL can send out pre-set max 15 strings via **AT+COMMAD1**, **ATCOMMAND2**,…, to **AT+COMMANDF** . All commands are of same grammar.
322 -)))
323 323  
324 -(((
356 +
325 325  **Handle return from sensors to RS485-BL**:
326 -)))
327 327  
328 -(((
329 329  After RS485-BL send out a string to sensor, RS485-BL will wait for the return from RS485 or TTL sensor. And user can specify how to handle the return, by **AT+DATACUT or AT+SEARCH commands**
330 -)))
331 331  
332 -* (((
333 -**AT+DATACUT**
334 -)))
335 335  
336 -(((
362 +* **AT+DATACUT**
363 +
337 337  When the return value from sensor have fix length and we know which position the valid value we should get, we can use AT+DATACUT command.
338 -)))
339 339  
340 -* (((
341 -**AT+SEARCH**
342 -)))
343 343  
344 -(((
367 +* **AT+SEARCH**
368 +
345 345  When the return value from sensor is dynamic length and we are not sure which bytes the valid data is, instead, we know what value the valid value following. We can use AT+SEARCH to search the valid value in the return string.
346 -)))
347 347  
348 -(((
371 +
349 349  **Define wait timeout:**
350 -)))
351 351  
352 -(((
353 353  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
354 -)))
355 355  
356 -(((
376 +
357 357  After we got the valid value from each RS485 commands, we need to combine them together with the command **AT+DATAUP**.
358 -)))
359 359  
379 +
360 360  **Examples:**
361 361  
362 362  Below are examples for the how above AT Commands works.
363 363  
384 +
364 364  **AT+COMMANDx : **This command will be sent to RS485/TTL devices during each sampling, Max command length is 14 bytes. The grammar is:
365 365  
366 -(% border="1" class="table-bordered" %)
367 367  |(((
368 368  **AT+COMMANDx=xx xx xx xx xx xx xx xx xx xx xx xx,m**
369 369  
... ... @@ -376,9 +376,9 @@
376 376  
377 377  In the RS485-BL, we should use this command AT+COMMAND1=01 03 0B B8 00 02,1 for the same.
378 378  
399 +
379 379  **AT+SEARCHx**: This command defines how to handle the return from AT+COMMANDx.
380 380  
381 -(% border="1" class="table-bordered" %)
382 382  |(((
383 383  **AT+SEARCHx=aa,xx xx xx xx xx**
384 384  
... ... @@ -396,7 +396,7 @@
396 396  
397 397  The valid data will be all bytes after 1E 56 34 , so it is 2e 30 58 5f 36 41 30 31 00 49
398 398  
399 -[[image:1652954654347-831.png]]
419 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image013.png]]
400 400  
401 401  
402 402  1. For a return string from AT+COMMAND1:  16 0c 1e 56 34 2e 30 58 5f 36 41 30 31 00 49
... ... @@ -457,7 +457,7 @@
457 457  
458 458  
459 459  1.
460 -11.
480 +11.
461 461  111. Compose the uplink payload
462 462  
463 463  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.**
... ... @@ -521,8 +521,8 @@
521 521  
522 522  
523 523  
524 -1.
525 -11.
544 +1.
545 +11.
526 526  111. Uplink on demand
527 527  
528 528  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.
... ... @@ -535,8 +535,8 @@
535 535  
536 536  
537 537  
538 -1.
539 -11.
558 +1.
559 +11.
540 540  111. Uplink on Interrupt
541 541  
542 542  Put the interrupt sensor between 3.3v_out and GPIO ext.[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image022.png]]
... ... @@ -550,7 +550,7 @@
550 550  AT+INTMOD=3  Interrupt trigger by rising edge.
551 551  
552 552  
553 -1.
573 +1.
554 554  11. Uplink Payload
555 555  
556 556  |**Size(bytes)**|**2**|**1**|**Length depends on the return from the commands**
... ... @@ -612,15 +612,15 @@
612 612  
613 613  * **Sensor Related Commands**: These commands are special designed for RS485-BL.  User can see these commands below:
614 614  
615 -1.
616 -11.
635 +1.
636 +11.
617 617  111. Common Commands:
618 618  
619 619  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]]
620 620  
621 621  
622 -1.
623 -11.
642 +1.
643 +11.
624 624  111. Sensor related commands:
625 625  
626 626  ==== Choose Device Type (RS485 or TTL) ====
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926 926  
927 927  
928 928  
929 -1.
949 +1.
930 930  11. Buttons
931 931  
932 932  |**Button**|**Feature**
933 933  |**RST**|Reboot RS485-BL
934 934  
935 -1.
955 +1.
936 936  11. +3V3 Output
937 937  
938 938  RS485-BL has a Controllable +3V3 output, user can use this output to power external sensor.
... ... @@ -950,7 +950,7 @@
950 950  By default, the AT+3V3T=0. This is a special case, means the +3V3 output is always on at any time
951 951  
952 952  
953 -1.
973 +1.
954 954  11. +5V Output
955 955  
956 956  RS485-BL has a Controllable +5V output, user can use this output to power external sensor.
... ... @@ -970,13 +970,13 @@
970 970  
971 971  
972 972  
973 -1.
993 +1.
974 974  11. LEDs
975 975  
976 976  |**LEDs**|**Feature**
977 977  |**LED1**|Blink when device transmit a packet.
978 978  
979 -1.
999 +1.
980 980  11. Switch Jumper
981 981  
982 982  |**Switch Jumper**|**Feature**
... ... @@ -1022,7 +1022,7 @@
1022 1022  
1023 1023  
1024 1024  
1025 -1.
1045 +1.
1026 1026  11. Common AT Command Sequence
1027 1027  111. Multi-channel ABP mode (Use with SX1301/LG308)
1028 1028  
... ... @@ -1041,8 +1041,8 @@
1041 1041  
1042 1042  ATZ
1043 1043  
1044 -1.
1045 -11.
1064 +1.
1065 +11.
1046 1046  111. Single-channel ABP mode (Use with LG01/LG02)
1047 1047  
1048 1048  AT+FDR   Reset Parameters to Factory Default, Keys Reserve
... ... @@ -1117,7 +1117,7 @@
1117 1117  [[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]]
1118 1118  
1119 1119  
1120 -1.
1140 +1.
1121 1121  11. How to change the LoRa Frequency Bands/Region?
1122 1122  
1123 1123  User can follow the introduction for [[how to upgrade image>>path:#upgrade_image]]. When download the images, choose the required image file for download.
... ... @@ -1124,7 +1124,7 @@
1124 1124  
1125 1125  
1126 1126  
1127 -1.
1147 +1.
1128 1128  11. How many RS485-Slave can RS485-BL connects?
1129 1129  
1130 1130  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]].
... ... @@ -1141,7 +1141,7 @@
1141 1141  
1142 1142  
1143 1143  
1144 -1.
1164 +1.
1145 1145  11. Why I can’t join TTN V3 in US915 /AU915 bands?
1146 1146  
1147 1147  It might about the channels mapping. Please see for detail.
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