Software timeout (internal)

What does F01023 mean?

An internal software timeout has occurred within the drive's control unit, indicating that a software task did not complete within its expected timeframe. This can be caused by transient software issues, corrupted firmware, or underlying hardware problems. An internal software timeout can lead to unpredictable drive behavior or complete system stoppage.

• Overloaded control unit CPU due to complex motion profiles or excessive communication tasks.
• Conflicting software tasks or high priority interrupts delaying critical background processes.
• Faulty internal memory access or cache corruption preventing timely task execution.
• Transient software bug or firmware anomaly requiring a system reset.
• Incompatible hardware components or modules causing unexpected delays in data processing.

Click steps to track your progress.

1. 1

   Perform a power cycle of the drive system by switching off and on the main power supply (L1, L2, L3) to reset the control unit.

2. 2

   Check the CPU load monitoring diagnostic in the engineering software (e.g., via STARTER or TIA Portal) to identify spikes.

3. 3

   Reduce the complexity of the current application program (e.g., motion profile points, PLC cycle time for communication) if the CPU load is consistently high.

4. 4

   Ensure the drive firmware is updated to the latest stable version for bug fixes and performance improvements (e.g., flash new firmware using SD card or SINAMICS DCC).

5. 5

   If the fault persists, back up drive parameters (e.g., P0000 to P9999) and perform a factory reset, then reload parameters.