LightBurn Cannot Connect to Edge Fiber Laser

Symptoms

• Device not detected
• Job will not start
• LightBurn shows connection error

Possible Causes

• USB cable disconnected
• Drivers not installed
• Incorrect device profile

Diagnostics

Step 1 — Verify USB Cable
Reconnect the USB cable.

Step 2 — Restart LightBurn
Restart the software.

Step 3 — Verify Device Profile
Ensure the correct fiber device profile is selected.

Solution

Reconnect the device and reinstall drivers if necessary.

Conclusion

Most communication issues are resolved by reinstalling drivers or reconnecting the USB cable.

Communication issues between LightBurn and the laser are usually caused by driver or USB connection problems.