Skip to Content
Last modified by Xiaoling on 2025/04/23 15:57
From version 33.3
edited by Xiaoling
on 2022/06/02 09:56
Change comment: There is no comment for this version
To version 33.9
edited by Xiaoling
on 2022/06/02 10:06
Change comment: There is no comment for this version

Summary

Details

Page properties
Content
... ... @@ -1093,79 +1093,75 @@
1093 1093  **07 02 aa bb**  Same as AT+3V3T=(aa bb)
1094 1094  
1095 1095  
1096 +== 3.6 Buttons ==
1096 1096  
1098 +(% border="1" style="background-color:#ffffcc; color:green; width:233px" %)
1099 +|=(% style="width: 89px;" %)**Button**|=(% style="width: 141px;" %)**Feature**
1100 +|(% style="width:89px" %)**RST**|(% style="width:141px" %)Reboot RS485-BL
1097 1097  
1098 -1.
1099 -11. Buttons
1102 +== 3.7 +3V3 Output ==
1100 1100  
1101 -|**Button**|**Feature**
1102 -|**RST**|Reboot RS485-BL
1103 -
1104 -1.
1105 -11. +3V3 Output
1106 -
1107 1107  RS485-BL has a Controllable +3V3 output, user can use this output to power external sensor.
1108 1108  
1109 1109  The +3V3 output will be valid for every sampling. RS485-BL will enable +3V3 output before all sampling and disable the +3V3 after all sampling. 
1110 1110  
1111 -
1112 1112  The +3V3 output time can be controlled by AT Command.
1113 1113  
1114 -**AT+3V3T=1000**
1115 1115  
1116 -Means set +3v3 valid time to have 1000ms. So, the real +3v3 output will actually have 1000ms + sampling time for other sensors.
1111 +(% style="color:#037691" %)**AT+3V3T=1000**
1117 1117  
1118 1118  
1114 +Means set +3v3 valid time to have 1000ms. So, the real +3v3 output will actually have 1000ms + sampling time for other sensors.
1115 +
1119 1119  By default, the AT+3V3T=0. This is a special case, means the +3V3 output is always on at any time
1120 1120  
1121 1121  
1122 -1.
1123 -11. +5V Output
1119 +== 3.8 +5V Output ==
1124 1124  
1125 1125  RS485-BL has a Controllable +5V output, user can use this output to power external sensor.
1126 1126  
1127 1127  The +5V output will be valid for every sampling. RS485-BL will enable +5V output before all sampling and disable the +5v after all sampling. 
1128 1128  
1129 -
1130 1130  The 5V output time can be controlled by AT Command.
1131 1131  
1132 -**AT+5VT=1000**
1133 1133  
1134 -Means set 5V valid time to have 1000ms. So, the real 5V output will actually have 1000ms + sampling time for other sensors.
1128 +(% style="color:#037691" %)**AT+5VT=1000**
1135 1135  
1136 1136  
1131 +Means set 5V valid time to have 1000ms. So, the real 5V output will actually have 1000ms + sampling time for other sensors.
1132 +
1137 1137  By default, the AT+5VT=0. If the external sensor which require 5v and require more time to get stable state, user can use this command to increase the power ON duration for this sensor.
1138 1138  
1139 1139  
1136 +== 3.9 LEDs ==
1140 1140  
1138 +(% border="1" style="background-color:#ffffcc; color:green; width:332px" %)
1139 +|=**LEDs**|=(% style="width: 274px;" %)**Feature**
1140 +|**LED1**|(% style="width:274px" %)Blink when device transmit a packet.
1141 1141  
1142 -1.
1143 -11. LEDs
1144 1144  
1145 -|**LEDs**|**Feature**
1146 -|**LED1**|Blink when device transmit a packet.
1143 +== 3.10 Switch Jumper ==
1147 1147  
1148 -1.
1149 -11. Switch Jumper
1150 -
1151 -|**Switch Jumper**|**Feature**
1152 -|**SW1**|(((
1145 +(% border="1" style="background-color:#ffffcc; color:green; width:515px" %)
1146 +|=(% style="width: 124px;" %)**Switch Jumper**|=(% style="width: 388px;" %)**Feature**
1147 +|(% style="width:124px" %)**SW1**|(% style="width:388px" %)(((
1153 1153  ISP position: Upgrade firmware via UART
1154 1154  
1155 1155  Flash position: Configure device, check running status.
1156 1156  )))
1157 -|**SW2**|(((
1152 +|(% style="width:124px" %)**SW2**|(% style="width:388px" %)(((
1158 1158  5V position: set to compatible with 5v I/O.
1159 1159  
1160 1160  3.3v position: set to compatible with 3.3v I/O.,
1161 1161  )))
1162 1162  
1163 -+3.3V: is always ON
1158 +**+3.3V**: is always ON
1164 1164  
1165 -+5V: Only open before every sampling. The time is by default, it is AT+5VT=0.  Max open time. 5000 ms.
1160 +**+5V**: Only open before every sampling. The time is by default, it is AT+5VT=0.  Max open time. 5000 ms.
1166 1166  
1167 -1. Case Study
1168 1168  
1163 += 4. Case Study =
1164 +
1169 1169  User can check this URL for some case studies.
1170 1170  
1171 1171  [[http:~~/~~/wiki.dragino.com/index.php?title=APP_RS485_COMMUNICATE_WITH_SENSORS>>url:http://wiki.dragino.com/index.php?title=APP_RS485_COMMUNICATE_WITH_SENSORS]]