Write to RAM disk unsuccessful

What does A01020 mean?

The system failed to write data to the internal RAM disk. This typically happens if the RAM disk is full or its size is not adequately configured for the data being written, such as the system logbook. Failure to write to the RAM disk can lead to incomplete logging of events or operational data, making troubleshooting difficult and potentially hiding critical issues.

• RAM disk overflow due to excessive logging (e.g., diagnostic traces, event history) without periodic clearing.
• Insufficient RAM disk size configured for the application (e.g., Parameter P8-12 for log size).
• Persistent system writes to the RAM disk (e.g., temporary files, configuration backups) exceeding its capacity.
• Corrupted RAM disk partition table or file system requiring reinitialization.

Click steps to track your progress.

1. 1

   Read the current RAM disk usage via diagnostic interface (e.g., drive trace viewer) to identify large files or log entries.

2. 2

   Adjust the RAM disk size parameter (e.g., P8-12) to a larger value, ensuring available control unit memory.

3. 3

   Clear historical logbook entries or diagnostic traces from the RAM disk through the HMI or engineering software (e.g., DriveMonitor).

4. 4

   Perform a firmware update or re-initialize the control unit's file system if corruption is suspected and usage is low (e.g., refer to firmware documentation for procedure).

5. 5

   Reduce the frequency or verbosity of diagnostic logging (e.g., decrease sampling rate of active traces) to minimize write operations.