Last modified by Karry Zhuang on 2025/03/06 16:34
<
From version < 22.7 >
edited by Xiaoling
on 2022/05/23 09:20
To version < 20.2 >
edited by Xiaoling
on 2022/05/23 09:08
>
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... ... @@ -41,17 +41,17 @@
41 41  **Hardware System:**
42 42  
43 43  * STM32L072CZT6 MCU
44 -* SX1276/78 Wireless Chip 
44 +* SX1276/78 Wireless Chip
45 45  * Power Consumption (exclude RS485 device):
46 46  ** Idle: 32mA@12v
47 47  
48 -*
48 +*
49 49  ** 20dB Transmit: 65mA@12v
50 50  
51 51  **Interface for Model:**
52 52  
53 53  * RS485
54 -* Power Input 7~~ 24V DC. 
54 +* Power Input 7~~ 24V DC.
55 55  
56 56  **LoRa Spec:**
57 57  
... ... @@ -116,9 +116,7 @@
116 116  * Power Source VIN to RS485-LN VIN+
117 117  * Power Source GND to RS485-LN VIN-
118 118  
119 -(((
120 120  Once there is power, the RS485-LN will be on.
121 -)))
122 122  
123 123  [[image:1653268091319-405.png]]
124 124  )))
... ... @@ -128,7 +128,7 @@
128 128  == 3.1 How it works? ==
129 129  
130 130  (((
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.
129 +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.
132 132  )))
133 133  
134 134  == 3.2 Example to join LoRaWAN network ==
... ... @@ -135,32 +135,27 @@
135 135  
136 136  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. 
137 137  
138 -[[image:1653268155545-638.png||height="334" width="724"]]
136 +[[image:1652953414711-647.png||height="337" width="723"]]
139 139  
140 140  (((
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:
139 +The RS485-BL in this example connected to two RS485 devices for demonstration, user can connect to other RS485 devices via the same method.
140 +)))
142 142  
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 -
147 147  (((
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:
143 +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:
149 149  )))
150 150  
151 151  (((
152 -**Step 1**: Create a device in TTN V3 with the OTAA keys from RS485-LN.
147 +**Step 1**: Create a device in TTN V3 with the OTAA keys from RS485-BL.
153 153  )))
154 154  
155 155  (((
156 -Each RS485-LN is shipped with a sticker with unique device EUI:
151 +Each RS485-BL is shipped with a sticker with unique device EUI:
157 157  )))
158 -)))
159 159  
160 160  [[image:1652953462722-299.png]]
161 161  
162 162  (((
163 -(((
164 164  User can enter this key in their LoRaWAN Server portal. Below is TTN V3 screen shot:
165 165  )))
166 166  
... ... @@ -167,11 +167,13 @@
167 167  (((
168 168  Add APP EUI in the application.
169 169  )))
170 -)))
171 171  
164 +
165 +
166 +
172 172  [[image:image-20220519174512-1.png]]
173 173  
174 -[[image:image-20220519174512-2.png||height="323" width="720"]]
169 +[[image:image-20220519174512-2.png||height="328" width="731"]]
175 175  
176 176  [[image:image-20220519174512-3.png||height="556" width="724"]]
177 177  
... ... @@ -187,7 +187,7 @@
187 187  
188 188  
189 189  (((
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.
185 +**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.
191 191  )))
192 192  
193 193  [[image:1652953568895-172.png||height="232" width="724"]]
... ... @@ -195,19 +195,23 @@
195 195  == 3.3 Configure Commands to read data ==
196 196  
197 197  (((
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.
193 +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.
200 200  )))
201 201  
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 -
207 207  === 3.3.1 onfigure UART settings for RS485 or TTL communication ===
208 208  
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:
198 +RS485-BL can connect to either RS485 sensors or TTL sensor. User need to specify what type of sensor need to connect.
210 210  
200 +**~1. RS485-MODBUS mode:**
201 +
202 +AT+MOD=1 ~/~/ Support RS485-MODBUS type sensors. User can connect multiply RS485 , Modbus sensors to the A / B pins.
203 +
204 +**2. TTL mode:**
205 +
206 +AT+MOD=2 ~/~/ Support TTL Level sensors, User can connect one TTL Sensor to the TXD/RXD/GND pins.
207 +
208 +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.
209 +
211 211  (% border="1" style="background-color:#ffffcc; color:green; width:795px" %)
212 212  |(((
213 213  **AT Commands**
... ... @@ -232,7 +232,13 @@
232 232  |(((
233 233  AT+PARITY
234 234  )))|(% style="width:285px" %)(((
234 +(((
235 235  Set UART parity (for RS485 connection)
236 +)))
237 +
238 +(((
239 +Default Value is: no parity.
240 +)))
236 236  )))|(% style="width:347px" %)(((
237 237  (((
238 238  AT+PARITY=0
... ... @@ -250,7 +250,7 @@
250 250  )))
251 251  
252 252  (((
253 -
258 +Default Value is: 1bit.
254 254  )))
255 255  )))|(% style="width:347px" %)(((
256 256  (((
... ... @@ -269,10 +269,12 @@
269 269  === 3.3.2 Configure sensors ===
270 270  
271 271  (((
277 +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**.
278 +)))
279 +
272 272  (((
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.
281 +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.
274 274  )))
275 -)))
276 276  
277 277  (% border="1" style="background-color:#ffffcc; color:green; width:806px" %)
278 278  |**AT Commands**|(% style="width:418px" %)**Description**|(% style="width:256px" %)**Example**
... ... @@ -452,7 +452,7 @@
452 452  
453 453  
454 454  1.
455 -11.
462 +11.
456 456  111. Compose the uplink payload
457 457  
458 458  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.**
... ... @@ -516,8 +516,8 @@
516 516  
517 517  
518 518  
519 -1.
520 -11.
526 +1.
527 +11.
521 521  111. Uplink on demand
522 522  
523 523  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.
... ... @@ -530,8 +530,8 @@
530 530  
531 531  
532 532  
533 -1.
534 -11.
540 +1.
541 +11.
535 535  111. Uplink on Interrupt
536 536  
537 537  Put the interrupt sensor between 3.3v_out and GPIO ext.[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image022.png]]
... ... @@ -545,7 +545,7 @@
545 545  AT+INTMOD=3  Interrupt trigger by rising edge.
546 546  
547 547  
548 -1.
555 +1.
549 549  11. Uplink Payload
550 550  
551 551  |**Size(bytes)**|**2**|**1**|**Length depends on the return from the commands**
... ... @@ -607,15 +607,15 @@
607 607  
608 608  * **Sensor Related Commands**: These commands are special designed for RS485-BL.  User can see these commands below:
609 609  
610 -1.
611 -11.
617 +1.
618 +11.
612 612  111. Common Commands:
613 613  
614 614  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]]
615 615  
616 616  
617 -1.
618 -11.
624 +1.
625 +11.
619 619  111. Sensor related commands:
620 620  
621 621  ==== Choose Device Type (RS485 or TTL) ====
... ... @@ -921,13 +921,13 @@
921 921  
922 922  
923 923  
924 -1.
931 +1.
925 925  11. Buttons
926 926  
927 927  |**Button**|**Feature**
928 928  |**RST**|Reboot RS485-BL
929 929  
930 -1.
937 +1.
931 931  11. +3V3 Output
932 932  
933 933  RS485-BL has a Controllable +3V3 output, user can use this output to power external sensor.
... ... @@ -945,7 +945,7 @@
945 945  By default, the AT+3V3T=0. This is a special case, means the +3V3 output is always on at any time
946 946  
947 947  
948 -1.
955 +1.
949 949  11. +5V Output
950 950  
951 951  RS485-BL has a Controllable +5V output, user can use this output to power external sensor.
... ... @@ -965,13 +965,13 @@
965 965  
966 966  
967 967  
968 -1.
975 +1.
969 969  11. LEDs
970 970  
971 971  |**LEDs**|**Feature**
972 972  |**LED1**|Blink when device transmit a packet.
973 973  
974 -1.
981 +1.
975 975  11. Switch Jumper
976 976  
977 977  |**Switch Jumper**|**Feature**
... ... @@ -1017,7 +1017,7 @@
1017 1017  
1018 1018  
1019 1019  
1020 -1.
1027 +1.
1021 1021  11. Common AT Command Sequence
1022 1022  111. Multi-channel ABP mode (Use with SX1301/LG308)
1023 1023  
... ... @@ -1036,8 +1036,8 @@
1036 1036  
1037 1037  ATZ
1038 1038  
1039 -1.
1040 -11.
1046 +1.
1047 +11.
1041 1041  111. Single-channel ABP mode (Use with LG01/LG02)
1042 1042  
1043 1043  AT+FDR   Reset Parameters to Factory Default, Keys Reserve
... ... @@ -1112,7 +1112,7 @@
1112 1112  [[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]]
1113 1113  
1114 1114  
1115 -1.
1122 +1.
1116 1116  11. How to change the LoRa Frequency Bands/Region?
1117 1117  
1118 1118  User can follow the introduction for [[how to upgrade image>>path:#upgrade_image]]. When download the images, choose the required image file for download.
... ... @@ -1119,7 +1119,7 @@
1119 1119  
1120 1120  
1121 1121  
1122 -1.
1129 +1.
1123 1123  11. How many RS485-Slave can RS485-BL connects?
1124 1124  
1125 1125  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]].
... ... @@ -1136,7 +1136,7 @@
1136 1136  
1137 1137  
1138 1138  
1139 -1.
1146 +1.
1140 1140  11. Why I can’t join TTN V3 in US915 /AU915 bands?
1141 1141  
1142 1142  It might about the channels mapping. Please see for detail.
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