0006 hex

Temperature Fell Below Minimum

Beckhoff · EL6900 Operating Instructions

What does 0006 hex mean?

This diagnostic code (found within FA00:03 Temperature error) indicates that the internal temperature of the device has dropped below its minimum permissible operating limit. This can affect the functionality of the primary and secondary microcontrollers (μC1, μC2) and may lead to unreliable operation or terminal shutdown.

Additional Steps

Steps 1–2 are listed in Priority Fix.

  1. 3

    Ensure the EL6900 terminal is installed in an environment with adequate thermal insulation if operating in cold conditions.

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