# FPU (133)

The floating point unit has been reported an error.

The cause of the error can be detailed by the Sub-ID:

### 0 - Inexact excpetion

The result of a floating point calculation is not exact.

### 1 - Overflow

The floating point unit has overflowed.

### 2 - Underflow

The result of a calculation to be displayed is too small.

### 3 - Invalid Operation

An invalid operation has been sent to the floating point unit.

### 4 - Divide by Zero

The divisor is Zero

### 5 - Input denormal

The initial value of an invoice is not a number.

## Fehleraktion

Ein Not-Aus wird durchgeführt.

## Troubleshooting

The error can be acknowledged by a restart of the device.

The error indicates a problem in the firmware of the converter.

Please contact the development department.