KUKA Robot codes
KUKA RobotSystemBasic

KRC0728

KUKA Robot KRC0728 - INTEGER, REAL OR CHARACTER CONSTANT EXPECTED 2064

INTEGER, REAL OR CHARACTER CONSTANT EXPECTED 2064

This syntax error occurs during KRL program compilation when the parser encounters an invalid token or data type where an integer, real number, or character constant is expected. The compiler cannot proceed with program interpretation until the syntax violation is corrected at the specified location in the source code.

Common Causes

  • Missing or incorrect numeric value in a constant declaration or assignment statement
  • Invalid character or special symbol used instead of a valid constant (e.g., using letters where numbers are required)
  • Unclosed string literal or improperly formatted character constant
  • Syntax error in variable initialization or parameter declaration with missing or malformed data type
  • Using an undefined variable name or invalid expression where a literal constant value is required

Troubleshooting Steps

  1. 1Review the KRL source code at the line number indicated in the error message and identify the problematic statement
  2. 2Verify that all numeric constants are properly formatted (integers without decimals, reals with decimal points)
  3. 3Check that character and string constants are enclosed in proper delimiters (single or double quotes as per KRL syntax)
  4. 4Ensure variable declarations include valid data types (INT, REAL, CHAR, BOOL) and properly initialized constant values
  5. 5Validate the syntax around the error location for missing operators, commas, parentheses, or other required punctuation
  6. 6Recompile the program after corrections and consult the KUKA KRL Language Reference documentation if syntax issues persist

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