Persistent, continuous flashing

K-bus EMC Problems

Beckhoff · CX2100-0914 Embedded PC

What does Persistent, continuous flashing mean?

The K-bus ERR LED flashes continuously, indicating electromagnetic compatibility (EMC) issues within the system. This condition can be caused by undervoltage or overvoltage peaks in the power supply, disrupting stable K-bus operation.

Additional Steps

Steps 1–2 are listed in Priority Fix.

  1. 3

    Perform a restart of the power supply unit by switching it off and then on again to clear the K-bus error state.

Source: Beckhoff CX2100-0914 Embedded PC
Open Manual (Page 80)