KUKA Robot codes
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KUKA Robot Controller

System · Basic

Alarm KRC0409

KUKA Robot KRC0409 - COR ARE FOR DATA LISTS ONLY

This alarm indicates that a COR (Correction) instruction or parameter has been used in an incorrect context within the KRC robot controller. The COR function is restricted for use only within data list definitions and cannot be applied to program logic or other operational contexts. This violation of COR's restricted scope triggers the alarm to prevent unpredictable robot behavior.

KUKA RobotSystemBasic

KRC0409

KUKA Robot KRC0409 - COR ARE FOR DATA LISTS ONLY

COR ARE FOR DATA LISTS ONLY

This alarm indicates that a COR (Correction) instruction or parameter has been used in an incorrect context within the KRC robot controller. The COR function is restricted for use only within data list definitions and cannot be applied to program logic or other operational contexts. This violation of COR's restricted scope triggers the alarm to prevent unpredictable robot behavior.

Common Causes

  • COR instruction used outside of a data list structure in the program code
  • Attempting to apply COR corrections to real-time program variables instead of predefined data lists
  • COR parameter called from a non-list execution context such as inline code or conditional statements
  • Improper syntax or nesting of COR within program logic blocks rather than isolated data declarations
  • Loading or importing legacy code that uses COR in unsupported contexts for the current KRC firmware version

Troubleshooting Steps

  1. 1Review the source program file and locate all instances of COR instructions or parameters
  2. 2Verify that every COR usage is contained within a properly declared data list structure (e.g., DLIST, CLIST, or equivalent data definition)
  3. 3Remove or relocate any COR commands found outside of data list contexts to the appropriate data list declaration section
  4. 4Check the KRC program syntax against current controller documentation to ensure compliance with COR usage restrictions
  5. 5Recompile and reload the corrected program into the KRC controller using the appropriate download/synchronization procedure
  6. 6Test program execution in teach mode at reduced speed to confirm the alarm no longer occurs and robot motion is nominal

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