F07B, Firmware download: Firmware index for the option unit can't be read

The firmware index of the option unit can't be read by the bootloader.

Diagnostic Code (Hex.)

Diagnostic Code (Dez.)

F07B

61563

Class

Type

Error

Bootloader error

Standard Reaction

Reset

The power stage is already switched off

A reset is not possible. A fatal hard- or software error occured and the transition PreOp->SafeOp is blocked.

Possible Causes

Solutions

There is an internal hardware or software error.

Disconnect the servo drive from the mains (including the 24 V power supply) and start a new attempt. If this error occurs repeatedly, please call the Beckhoff branch office that is responsible for you.

The option unit is defective.

Replace the option unit as necessary.