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14
Problem
Unable to obtain L2
data through TTL
UART method
Unable to obtain L2
data through ENET
UDP method
Unable to confirm
the IP parameter
information of the L2
After being forced by
an external force,
the L2 stops rotating
Solution
Troubleshooting
After - sales Warranty Information
If problems occur during use, please check the following table for solutions. If the problem still
cannot be solved, please contact Unitree or an authorized dealer of Unitree.
Visit https://www.unitree.com/terms to learn more about the warranty information of Unitree 4D
Lidar - L2.
·Confirm that all wires are correctly connected.
·Confirm that the adapter is suitable. The power supply require-
ment of the L2 is 12V, 1A.
·Confirm that the radar data output is selected as TTL UART
output.
After confirming the above, if the serial port connected to the L2
still cannot be detected, try restarting the L2 and Unilidar 2 soft-
ware.
·Confirm that all wires are correctly connected.
·Confirm that the adapter is suitable. The power supply require-
ment of the L2 is 12V, 1A.
·Confirm that the L2 and the target server's IP configurations are
correct and do not conflict.
·Check the network configuration and confirm that the network is
smooth.
·Confirm that the port for receiving data on the target server is
not occupied or isolated, and the default is udp6201.
·Confirm that the radar data output is ENET UDP output.
·Connect the L2 by serial port, modify the IP parameter information
through an upper computer or SDK, and save and restart.
·Confirm that all wires are correctly connected.
·Confirm that the adapter is suitable. The power supply requirement
of the L2 is 12V, 1A. If the problem still exists, try restarting the L2 and
Unilidar 2 software.
·Usually, when the external force is released, the L2 will automati-
cally resume rotation.
·Try restarting the L2.
Can detect the serial
port connected to the
L2, but cannot open
the serial port / or
cannot start sampling
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