0005 hex

Maximum Temperature Exceeded

Beckhoff · EL6900 Operating Instructions

What does 0005 hex mean?

This diagnostic code (found within FA00:03 Temperature error) indicates that the internal temperature of the device has exceeded its maximum permissible operating limit. This condition can affect the primary and secondary microcontrollers (μC1, μC2) and may lead to component degradation or terminal shutdown.

Additional Steps

Steps 1–2 are listed in Priority Fix.

  1. 3

    Ensure proper airflow around the EL6900 terminal by checking for obstructions in the cabinet or around the device.

Source: Beckhoff EL6900 Operating Instructions
Open Manual (Page 55)