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Joseph BatesAug 14, 2025
Why is I/O LED flashing red on BeiJer I/O Systems?
- JJennifer LopezAug 14, 2025
The I/O LED might flash red on BeiJer I/O Systems due to a failure in configuration baud rate, initialization I/O, or the NA series noticing an unidentified expansion module ID. You should check the communication cable with the Master and the power for the master. Also, use an expansion slot of up to 63 and ensure the total I/O size is not excessive. Finally, check the status of the expansion module.

