12338

Close file failed

Fanuc · R-30iA R-30iB Controller

What does 12338 mean?

A general failure occurred during a file close operation. This IO_STATUS error indicates an underlying issue that prevented a file associated with the file_id from being properly closed and its system resources released. The program will abort if the file_id is invalid.

Common Causes

  • The file system encountered an error while attempting to finalize file operations or flush buffered data.
  • The file was already closed or in an invalid state when the close operation was attempted.
  • The file_id used does not correspond to a valid opened file handle.

Repair Steps

  1. 1

    Verify the file_id corresponds to an actually opened file prior to attempting to close it.

  2. 2

    Check system logs for other underlying file system errors that might be preventing successful file closure.

  3. 3

    Use the KAREL command READ file_id(cr) to clear any existing IO_STATUS error condition.

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Verified technical data. Last updated: March 2026
Source: Fanuc R-30iA R-30iB Controller