Self-Diagnostic Error (Major/Moderate/Minor)

What does AL   mean?

This indicates a self-diagnostic error detected by the Motion CPU module, which can range from minor warnings to major faults impacting operation. The 4-digit code () provides specific details, along with a displayed file name and operating mode for continuous errors.

• Program errors or incorrect parameter settings
• External signal issues causing operational problems
• Momentary noise affecting system stability
• Hardware malfunction within the module
• Parameter or file error detected (e.g., specific file like 'motnet01.csv')

Click steps to track your progress.

1. 1

   Refer to 'MELSEC iQ-R Motion controller Programming Manual (Common)' for details on error codes and file names.

2. 2

   Use MT Developer2 to confirm the 4-digit error code, any displayed file name (e.g., 'motnet01.csv'), and the operating mode (STP, RUN, TES).

3. 3

   Address the specific parameter, file, or operational issue indicated by the detailed error information.