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ErrorLib — Industrial Fault Code Library

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12335

Cannot open pre_defined file

Fanuc · R-30iA R-30iB Controller

What does 12335 mean?

An attempt to open a pre-defined KAREL file (such as CRT/KB, teach pendant, or vision windows) failed. This IO_STATUS error indicates an issue with accessing these standard system I/O channels. This could be due to resource contention or system misconfiguration.

Common Causes

  • The specified pre-defined file or I/O channel is currently unavailable or misconfigured within the system environment.
  • System resources required to open the pre-defined file (e.g., memory, handles) are insufficient.
  • Another program or process is currently holding an exclusive lock on the pre-defined file.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Verify the status and configuration of the specific pre-defined file (e.g., CRT/KB, teach pendant) in the system settings.

  2. 2

    Ensure no other KAREL programs are attempting to concurrently open the same exclusive pre-defined I/O channel.

  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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