USR-DR504-E User Manual
Jinan USR IOT Technology Limited
Tech Support: h.usriot.com
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2.3.6.
Indicator Status
There are ten indicators light on the DR504, PWR, WORK, NET, LINKA, LINKB, TX, RX, First-level signal strength,
second-level signal and third- level signal. The status represented by the indicator are as follows:
Figure 8 Indicator status
Indicator name
Indicator function
Status
POWER
Power indicator
Always on after power work normally
WORK
System operation indicator.
Flashing after system running
NET
Network status indicator
Always on after registering the network
LINKA
Socket A connection indicator
Always on after socket A is connected
LINKB
Socket B connection indicator
Always on after the socket B connected
TX
Serial port send the data
Light when there is data from serial port
RX
Serial port receive the data
Light when there is data received by the serial
port
First-level signal
Indicate the first level signal
strength
Always on when the signal strength reach the
first level
Second-level
Indicate the second level signal
strength
Always on when the signal strength reach the
second level
Third- level signal Indicate the third level signal
strength
Always on when the signal strength reach the
third level
Form 2.3.6-1 Indicators
2.3.7. Restore to the factory default settings
After power on, press the Reload button for 3~15S and release it to restore the device parameters to factory
default parameters.
2.3.8.
Firmware Upgrade
2.3.8.1. Upgrade by serial port
In order to reduce the complexity of firmware upgrade for users, USR-DR504-E has specially set up the firmware
upgrade with 232 ports. The steps are as follows:
(1) Set baud rate to 115200, no check bit, data bit 8, stop bit 1, open serial port, click firmware upgrade, and select
the firmware to be upgraded.