KUKA Robot codes
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KUKA Robot Controller

System · Basic

Alarm KRC1025

KUKA Robot KRC1025 - <object name> LINK LIST CANNOT BE EXTENDED 2710

This alarm indicates that the KRL program object (module, function, or variable) specified in the alarm message cannot extend its link list during runtime execution. The link list is an internal data structure used by KUKA to manage object references and dependencies; when it becomes full or fragmented, new links cannot be added.

KUKA RobotSystemBasic

KRC1025

KUKA Robot KRC1025 - <object name> LINK LIST CANNOT BE EXTENDED 2710

<object name> LINK LIST CANNOT BE EXTENDED 2710

This alarm indicates that the KRL program object (module, function, or variable) specified in the alarm message cannot extend its link list during runtime execution. The link list is an internal data structure used by KUKA to manage object references and dependencies; when it becomes full or fragmented, new links cannot be added.

Common Causes

  • Insufficient memory allocated for the KRL program or workspace
  • Excessive creation of dynamic objects or instances without proper deallocation
  • Circular or overly complex object dependencies in the program structure
  • Memory fragmentation from repeated object creation and deletion cycles
  • Program exceeds the maximum allowed complexity or nesting depth for link list management

Troubleshooting Steps

  1. 1Review the KRL program code to identify which object is referenced in the alarm message
  2. 2Check available system memory and consider increasing the memory allocation for the KRL workspace in the robot controller configuration
  3. 3Audit the program for unnecessary object instantiation and ensure proper cleanup/deallocation of unused objects
  4. 4Simplify object dependencies and reduce nesting depth where possible; refactor complex structures into modular components
  5. 5Monitor memory usage during program execution using KUKA diagnostic tools to identify memory leaks or inefficient allocation patterns
  6. 6If necessary, restart the KRC controller to clear memory fragmentation and reload the program

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