KUKA Robot codes
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KUKA Robot Controller

System · Basic

Alarm KRC0874

KUKA Robot KRC0874 - TOO MUCH MEMORY REQUIRED FOR DYNAMIC VARIABLE 2210

This alarm indicates that a dynamic variable declaration in a KRL program requires more memory than is available in the system's dynamic memory allocation pool. The system cannot instantiate the variable due to insufficient heap memory, which typically occurs when declaring large arrays, structures, or complex data types during program execution.

KUKA RobotSystemBasic

KRC0874

KUKA Robot KRC0874 - TOO MUCH MEMORY REQUIRED FOR DYNAMIC VARIABLE 2210

TOO MUCH MEMORY REQUIRED FOR DYNAMIC VARIABLE 2210

This alarm indicates that a dynamic variable declaration in a KRL program requires more memory than is available in the system's dynamic memory allocation pool. The system cannot instantiate the variable due to insufficient heap memory, which typically occurs when declaring large arrays, structures, or complex data types during program execution.

Common Causes

  • Declaring excessively large arrays without proper dimensioning constraints
  • Nested structures or compound data types with insufficient memory allocation
  • Memory leaks from previous program executions not properly freed
  • Dynamic memory fragmentation preventing contiguous memory block allocation
  • Program attempting to allocate memory beyond system limits defined in robotics configuration

Troubleshooting Steps

  1. 1Review the KRL program source code around line 2210 to identify the specific variable declaration causing the error
  2. 2Reduce the size of dynamic array or structure declarations, or use static allocation where possible
  3. 3Implement proper memory management by ensuring unused variables are deleted or scoped appropriately
  4. 4Check system memory configuration in the KRC settings and verify available heap memory allocation
  5. 5Restart the KRC controller to clear any memory fragmentation from previous program runs
  6. 6Consult the KRL program documentation and consider restructuring data types to use more memory-efficient representations

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