KUKA Robot codes
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KUKA Robot Controller

System · Basic

Alarm KRC0771

KUKA Robot KRC0771 - BLOCK CANNOT BE DELETED 2107

This alarm occurs when the system attempts to delete a KRL program object (module, function, or variable) that cannot be removed due to active dependencies or system restrictions. The object is likely still referenced by active program code or is a system-protected element that cannot be manually deleted.

KUKA RobotSystemBasic

KRC0771

KUKA Robot KRC0771 - BLOCK CANNOT BE DELETED 2107

BLOCK CANNOT BE DELETED 2107

This alarm occurs when the system attempts to delete a KRL program object (module, function, or variable) that cannot be removed due to active dependencies or system restrictions. The object is likely still referenced by active program code or is a system-protected element that cannot be manually deleted.

Common Causes

  • The object is currently being used or referenced by active running programs
  • The object is a system-protected or read-only file that cannot be deleted
  • Another program module or function has an active dependency on the target object
  • The object is locked by the KUKA system or another user session
  • Insufficient permissions or file system restrictions prevent deletion

Troubleshooting Steps

  1. 1Stop all running programs and clear the program call stack before attempting deletion
  2. 2Verify the object is not referenced by other active modules using the program search/dependency checker
  3. 3Check file permissions and ensure the object is not marked as read-only or system-protected
  4. 4Clear any breakpoints or debug sessions that may be holding references to the object
  5. 5Close all open editor windows and program instances that reference the target object
  6. 6If the object is system-protected, contact KUKA support or remove only user-created objects

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