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<
From version < 21.1 >
edited by Xiaoling
on 2022/05/23 09:09
To version < 15.5 >
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Title
... ... @@ -1,1 +1,1 @@
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  
... ... @@ -96,33 +96,47 @@
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  
111 -= 2. Power ON Device =
112 112  
113 113  (((
114 -The RS485-LN can be powered by 7 ~~ 24V DC power source. Connection as below
138 +v1.2
139 +)))
115 115  
116 -* Power Source VIN to RS485-LN VIN+
117 -* Power Source GND to RS485-LN VIN-
118 -
119 119  (((
120 -Once there is power, the RS485-LN will be on.
142 +Release version ​​​​​
121 121  )))
122 122  
123 -[[image:1653268091319-405.png]]
145 += 2. Pin mapping and Power ON Device =
146 +
147 +(((
148 +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.
124 124  )))
125 125  
151 +[[image:1652953055962-143.png||height="387" width="728"]]
152 +
153 +
154 +The Left TXD and RXD are TTL interface for external sensor. TTL level is controlled by 3.3/5v Jumper.
155 +
126 126  = 3. Operation Mode =
127 127  
128 128  == 3.1 How it works? ==
... ... @@ -273,101 +273,87 @@
273 273  )))
274 274  )))
275 275  
276 -=== 3.3.2 Configure sensors ===
277 277  
278 -(((
279 -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**.
280 -)))
281 281  
282 -(((
283 -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.
284 -)))
285 285  
286 -(% border="1" style="background-color:#ffffcc; color:green; width:806px" %)
287 -|**AT Commands**|(% style="width:418px" %)**Description**|(% style="width:256px" %)**Example**
288 -|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|(((
289 289  This command is used to configure the RS485/TTL devices; they won’t be used during sampling.
290 290  
291 -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
292 292  
293 -mm: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
294 -)))|(% 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
295 295  
296 296  Detail of AT+CFGDEV command see [[AT+CFGDEV detail>>path:#AT_CFGDEV]].
297 297  
298 -=== 3.3.3 Configure read commands for each sampling ===
299 299  
300 -(((
330 +
331 +
332 +
333 +1.
334 +11.
335 +111. Configure read commands for each sampling
336 +
301 301  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.
302 -)))
303 303  
304 -(((
339 +
305 305  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.
306 -)))
307 307  
308 -(((
342 +
309 309  To save the LoRaWAN network bandwidth, we might need to read data from different sensors and combine their valid value into a short payload.
310 -)))
311 311  
312 -(((
345 +
313 313  This section describes how to achieve above goals.
314 -)))
315 315  
316 -(((
348 +
317 317  During each sampling, the RS485-BL can support 15 commands to read sensors. And combine the return to one or several uplink payloads.
318 -)))
319 319  
320 -(((
351 +
321 321  **Command from RS485-BL to Sensor:**
322 -)))
323 323  
324 -(((
325 325  RS485-BL can send out pre-set max 15 strings via **AT+COMMAD1**, **ATCOMMAND2**,…, to **AT+COMMANDF** . All commands are of same grammar.
326 -)))
327 327  
328 -(((
356 +
329 329  **Handle return from sensors to RS485-BL**:
330 -)))
331 331  
332 -(((
333 333  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**
334 -)))
335 335  
336 -* (((
337 -**AT+DATACUT**
338 -)))
339 339  
340 -(((
362 +* **AT+DATACUT**
363 +
341 341  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.
342 -)))
343 343  
344 -* (((
345 -**AT+SEARCH**
346 -)))
347 347  
348 -(((
367 +* **AT+SEARCH**
368 +
349 349  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.
350 -)))
351 351  
352 -(((
371 +
353 353  **Define wait timeout:**
354 -)))
355 355  
356 -(((
357 357  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
358 -)))
359 359  
360 -(((
376 +
361 361  After we got the valid value from each RS485 commands, we need to combine them together with the command **AT+DATAUP**.
362 -)))
363 363  
379 +
364 364  **Examples:**
365 365  
366 366  Below are examples for the how above AT Commands works.
367 367  
384 +
368 368  **AT+COMMANDx : **This command will be sent to RS485/TTL devices during each sampling, Max command length is 14 bytes. The grammar is:
369 369  
370 -(% border="1" class="table-bordered" %)
371 371  |(((
372 372  **AT+COMMANDx=xx xx xx xx xx xx xx xx xx xx xx xx,m**
373 373  
... ... @@ -380,9 +380,9 @@
380 380  
381 381  In the RS485-BL, we should use this command AT+COMMAND1=01 03 0B B8 00 02,1 for the same.
382 382  
399 +
383 383  **AT+SEARCHx**: This command defines how to handle the return from AT+COMMANDx.
384 384  
385 -(% border="1" class="table-bordered" %)
386 386  |(((
387 387  **AT+SEARCHx=aa,xx xx xx xx xx**
388 388  
... ... @@ -400,7 +400,7 @@
400 400  
401 401  The valid data will be all bytes after 1E 56 34 , so it is 2e 30 58 5f 36 41 30 31 00 49
402 402  
403 -[[image:1652954654347-831.png]]
419 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image013.png]]
404 404  
405 405  
406 406  1. For a return string from AT+COMMAND1:  16 0c 1e 56 34 2e 30 58 5f 36 41 30 31 00 49
... ... @@ -461,7 +461,7 @@
461 461  
462 462  
463 463  1.
464 -11.
480 +11.
465 465  111. Compose the uplink payload
466 466  
467 467  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.**
... ... @@ -525,8 +525,8 @@
525 525  
526 526  
527 527  
528 -1.
529 -11.
544 +1.
545 +11.
530 530  111. Uplink on demand
531 531  
532 532  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.
... ... @@ -539,8 +539,8 @@
539 539  
540 540  
541 541  
542 -1.
543 -11.
558 +1.
559 +11.
544 544  111. Uplink on Interrupt
545 545  
546 546  Put the interrupt sensor between 3.3v_out and GPIO ext.[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image022.png]]
... ... @@ -554,7 +554,7 @@
554 554  AT+INTMOD=3  Interrupt trigger by rising edge.
555 555  
556 556  
557 -1.
573 +1.
558 558  11. Uplink Payload
559 559  
560 560  |**Size(bytes)**|**2**|**1**|**Length depends on the return from the commands**
... ... @@ -616,15 +616,15 @@
616 616  
617 617  * **Sensor Related Commands**: These commands are special designed for RS485-BL.  User can see these commands below:
618 618  
619 -1.
620 -11.
635 +1.
636 +11.
621 621  111. Common Commands:
622 622  
623 623  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]]
624 624  
625 625  
626 -1.
627 -11.
642 +1.
643 +11.
628 628  111. Sensor related commands:
629 629  
630 630  ==== Choose Device Type (RS485 or TTL) ====
... ... @@ -930,13 +930,13 @@
930 930  
931 931  
932 932  
933 -1.
949 +1.
934 934  11. Buttons
935 935  
936 936  |**Button**|**Feature**
937 937  |**RST**|Reboot RS485-BL
938 938  
939 -1.
955 +1.
940 940  11. +3V3 Output
941 941  
942 942  RS485-BL has a Controllable +3V3 output, user can use this output to power external sensor.
... ... @@ -954,7 +954,7 @@
954 954  By default, the AT+3V3T=0. This is a special case, means the +3V3 output is always on at any time
955 955  
956 956  
957 -1.
973 +1.
958 958  11. +5V Output
959 959  
960 960  RS485-BL has a Controllable +5V output, user can use this output to power external sensor.
... ... @@ -974,13 +974,13 @@
974 974  
975 975  
976 976  
977 -1.
993 +1.
978 978  11. LEDs
979 979  
980 980  |**LEDs**|**Feature**
981 981  |**LED1**|Blink when device transmit a packet.
982 982  
983 -1.
999 +1.
984 984  11. Switch Jumper
985 985  
986 986  |**Switch Jumper**|**Feature**
... ... @@ -1026,7 +1026,7 @@
1026 1026  
1027 1027  
1028 1028  
1029 -1.
1045 +1.
1030 1030  11. Common AT Command Sequence
1031 1031  111. Multi-channel ABP mode (Use with SX1301/LG308)
1032 1032  
... ... @@ -1045,8 +1045,8 @@
1045 1045  
1046 1046  ATZ
1047 1047  
1048 -1.
1049 -11.
1064 +1.
1065 +11.
1050 1050  111. Single-channel ABP mode (Use with LG01/LG02)
1051 1051  
1052 1052  AT+FDR   Reset Parameters to Factory Default, Keys Reserve
... ... @@ -1121,7 +1121,7 @@
1121 1121  [[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]]
1122 1122  
1123 1123  
1124 -1.
1140 +1.
1125 1125  11. How to change the LoRa Frequency Bands/Region?
1126 1126  
1127 1127  User can follow the introduction for [[how to upgrade image>>path:#upgrade_image]]. When download the images, choose the required image file for download.
... ... @@ -1128,7 +1128,7 @@
1128 1128  
1129 1129  
1130 1130  
1131 -1.
1147 +1.
1132 1132  11. How many RS485-Slave can RS485-BL connects?
1133 1133  
1134 1134  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]].
... ... @@ -1145,7 +1145,7 @@
1145 1145  
1146 1146  
1147 1147  
1148 -1.
1164 +1.
1149 1149  11. Why I can’t join TTN V3 in US915 /AU915 bands?
1150 1150  
1151 1151  It might about the channels mapping. Please see for detail.
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