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ErrorLib — Industrial Fault Code Library

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12336

Cannot close pre_defined file

Fanuc · R-30iA R-30iB Controller

What does 12336 mean?

An attempt to close a pre-defined KAREL file (such as CRT/KB, teach pendant, or vision windows) failed. This IO_STATUS error indicates an issue preventing the proper release of these standard system I/O channels. This could leave the resource in an indeterminate state.

Common Causes

  • The specified pre-defined file is locked by another process or is in an invalid state, preventing its closure.
  • System resources are preventing the proper closing of the file, such as a hung I/O operation.
  • The pre-defined file was not properly opened in the first place, leading to an attempt to close an invalid handle.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Verify the status of the specific pre-defined file (e.g., CRT/KB, teach pendant) to ensure it's in a closable state.

  2. 2

    Check for any outstanding I/O operations on the pre-defined file that might be preventing its closure.

  3. 3

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

Browse all codes in this manual (31)
Verified technical data. Last updated: April 2026

Related Faults

12328File is not opened12329Cannot write the variable12330Write file failed
Source: Fanuc R-30iA R-30iB Controller
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