Last modified by Bei Jinggeng on 2025/01/16 11:36
<
From version < 58.19 >
edited by Xiaoling
on 2022/06/06 11:24
To version < 58.32 >
edited by Xiaoling
on 2022/06/06 11:47
>
Change comment: There is no comment for this version

Summary

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Content
... ... @@ -103,7 +103,6 @@
103 103  * Support Modbus protocol
104 104  * Support Interrupt uplink (Since hardware version v1.2)
105 105  
106 -
107 107  == 1.4 Applications ==
108 108  
109 109  * Smart Buildings & Home Automation
... ... @@ -113,7 +113,6 @@
113 113  * Smart Cities
114 114  * Smart Factory
115 115  
116 -
117 117  == 1.5 Firmware Change log ==
118 118  
119 119  [[RS485-LN Image files – Download link and Change log>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/]]
... ... @@ -307,8 +307,6 @@
307 307  )))
308 308  )))
309 309  
310 -
311 -
312 312  === 3.3.2 Configure sensors ===
313 313  
314 314  (((
... ... @@ -327,8 +327,6 @@
327 327  mm: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
328 328  )))|(% style="width:190px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
329 329  
330 -
331 -
332 332  === 3.3.3 Configure read commands for each sampling ===
333 333  
334 334  (((
... ... @@ -1087,61 +1087,120 @@
1087 1087  
1088 1088  == 3.6 Listening mode for RS485 network ==
1089 1089  
1084 +(((
1090 1090  This feature support since firmware v1.4
1086 +)))
1091 1091  
1088 +(((
1092 1092  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.
1090 +)))
1093 1093  
1094 1094  [[image:image-20220602171200-8.png||height="567" width="1007"]]
1095 1095  
1094 +(((
1096 1096  To enable the listening mode, use can run the command AT+RXMODE.
1096 +)))
1097 1097  
1098 +(((
1099 +
1100 +)))
1098 1098  
1099 -(% border="1" style="background-color:#ffffcc; width:500px" %)
1100 -|=(% style="width: 161px;" %)**Command example:**|=(% style="width: 337px;" %)**Function**
1101 -|(% 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.
1102 -|(% 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
1103 -|(% style="width:161px" %)AT+RXMODE=0,0|(% style="width:337px" %)Disable listening mode. This is the default settings.
1104 -|(% style="width:161px" %) |(% style="width:337px" %)A6 aa bb cc  same as AT+RXMODE=aa,(bb<<8 ~| cc)
1102 +(% border="1" cellspacing="10" style="background-color:#ffffcc; width:500px" %)
1103 +|=(% style="width: 161px;" %)(((
1104 +**Command example:**
1105 +)))|=(% style="width: 337px;" %)(((
1106 +**Function**
1107 +)))
1108 +|(% style="width:161px" %)(((
1109 +AT+RXMODE=1,10
1110 +)))|(% style="width:337px" %)(((
1111 +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.
1112 +)))
1113 +|(% style="width:161px" %)(((
1114 +AT+RXMODE=2,500
1115 +)))|(% style="width:337px" %)(((
1116 +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
1117 +)))
1118 +|(% style="width:161px" %)(((
1119 +AT+RXMODE=0,0
1120 +)))|(% style="width:337px" %)(((
1121 +Disable listening mode. This is the default settings.
1122 +)))
1123 +|(% style="width:161px" %)(((
1124 +
1125 +)))|(% style="width:337px" %)(((
1126 +A6 aa bb cc  same as AT+RXMODE=aa,(bb<<8 | cc)
1127 +)))
1105 1105  
1129 +(((
1106 1106  **Downlink Command:**
1131 +)))
1107 1107  
1133 +(((
1108 1108  **0xA6 aa bb cc ** same as AT+RXMODE=aa,(bb<<8 | cc)
1135 +)))
1109 1109  
1137 +(((
1138 +
1139 +)))
1110 1110  
1141 +(((
1111 1111  **Example**:
1143 +)))
1112 1112  
1145 +(((
1113 1113  The RS485-LN is set to AT+RXMODE=2,1000
1147 +)))
1114 1114  
1149 +(((
1115 1115  There is a two Modbus commands in the RS485 network as below:
1151 +)))
1116 1116  
1153 +(((
1117 1117  The Modbus master send a command: (% style="background-color:#ffc000" %)01 03 00 00 00 02 c4 0b
1155 +)))
1118 1118  
1157 +(((
1119 1119  And Modbus slave reply with: (% style="background-color:green" %)01 03 04 00 00 00 00 fa 33
1159 +)))
1120 1120  
1161 +(((
1121 1121  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
1163 +)))
1122 1122  
1165 +(((
1123 1123  [[image:image-20220602171200-9.png]]
1167 +)))
1124 1124  
1169 +(((
1170 +
1171 +)))
1125 1125  
1173 +(((
1126 1126  (% 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.
1175 +)))
1127 1127  
1128 1128  
1129 1129  == 3.7 Buttons ==
1130 1130  
1131 1131  
1132 -(% border="1" style="background-color:#f7faff; width:500px" %)
1133 -|=**Button**|=(% style="width: 1420px;" %)**Feature**
1134 -|**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**
1135 -|**RST**|(% style="width:1420px" %)Reboot RS485
1136 -|**PRO**|(% style="width:1420px" %)Use for upload image, see [[How to Update Image>>||anchor="H6.1Howtoupgradetheimage3F"]]
1181 +(% border="1" cellspacing="10" style="background-color:#f7faff; width:430px" %)
1182 +|=(% style="width: 30px;" %)**Button**|=(% style="width: 355px;" %)**Feature**
1183 +|=(% style="width: 30px;" %)**ACT**|(% style="width:355px" %)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**
1184 +|=(% style="width: 30px;" %)**RST**|(% style="width:355px" %)Reboot RS485
1185 +|=(% style="width: 30px;" %)**PRO**|(% style="width:355px" %)Use for upload image, see [[How to Update Image>>||anchor="H6.1Howtoupgradetheimage3F"]]
1137 1137  
1187 +
1188 +
1138 1138  == 3.8 LEDs ==
1139 1139  
1140 -(% border="1" style="background-color:#f7faff; width:500px" %)
1141 -|=**LEDs**|=**Feature**
1142 -|**PWR**|Always on if there is power
1143 -|**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.
1191 +(% border="1" cellspacing="10" style="background-color:#f7faff; width:430px" %)
1192 +|=(% style="width: 30px;" %)**LEDs**|=(% style="width: 400px;" %)**Feature**
1193 +|(% style="width:30px" %)**PWR**|=(% style="width: 400px;" %)Always on if there is power
1194 +|(% style="width:30px" %)**SYS**|=(% style="width: 400px;" %)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.
1144 1144  
1196 +
1197 +
1145 1145  = 4. Case Study =
1146 1146  
1147 1147  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]]
... ... @@ -1151,19 +1151,26 @@
1151 1151  
1152 1152  == 5.1 Access AT Command ==
1153 1153  
1207 +(((
1154 1154  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.
1209 +)))
1155 1155  
1156 1156  [[image:1654162355560-817.png]]
1157 1157  
1158 1158  
1214 +(((
1159 1159  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:
1216 +)))
1160 1160  
1161 1161  [[image:1654162368066-342.png]]
1162 1162  
1163 1163  
1221 +(((
1164 1164  More detail AT Command manual can be found at [[AT Command Manual>>https://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/]]
1223 +)))
1165 1165  
1166 1166  
1226 +
1167 1167  == 5.2 Common AT Command Sequence ==
1168 1168  
1169 1169  === 5.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
... ... @@ -1318,7 +1318,6 @@
1318 1318  * (% style="color:blue" %)**RU864**(%%): frequency bands RU864
1319 1319  * (% style="color:blue" %)**KZ865**(%%): frequency bands KZ865
1320 1320  
1321 -
1322 1322  = 9.Packing Info =
1323 1323  
1324 1324  
... ... @@ -1335,7 +1335,6 @@
1335 1335  * Package Size / pcs : 14.5 x 8 x 5 cm
1336 1336  * Weight / pcs : 170g
1337 1337  
1338 -
1339 1339  = 10. FCC Caution for RS485LN-US915 =
1340 1340  
1341 1341  (((

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