KUKA Robot codes
KUKA RobotSystemBasic

KRC0923

KUKA Robot KRC0923 - LEFT OPERAND: ARRAY OR PATH INVALID 2260

LEFT OPERAND: ARRAY OR PATH INVALID 2260

This alarm indicates that the left operand in a KRL expression is an invalid array or path reference. The system cannot access or interpret the array/path object specified on the left side of an operator, typically occurring during runtime evaluation of array indexing or path operations.

Common Causes

  • Array index out of bounds or exceeds declared array dimensions
  • Uninitialized or null array/path variable used in expression
  • Incorrect array syntax or missing brackets in KRL code
  • Path variable not properly defined or declared before usage
  • Type mismatch between expected array type and actual operand type

Troubleshooting Steps

  1. 1Review the KRL program line where the alarm occurred and identify the left operand in the expression
  2. 2Verify that all array variables are properly declared with correct dimensions in the variable declaration section
  3. 3Check array index values to ensure they are within valid bounds (1 to array size for KRL)
  4. 4Confirm that array/path variables are initialized before being referenced in expressions
  5. 5Validate syntax of array access statements, ensuring proper bracket placement and index notation
  6. 6Test the program with simplified array operations to isolate the problematic code section

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