KUKA Robot codes
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KUKA Robot Controller

System · Basic

Alarm KRC0921

KUKA Robot KRC0921 - OPERAND NOT EQUAL TO, CHAR 2258

This alarm indicates a syntax error in KRL source code at character position 2258 where an operand was expected to be equal to a specific value but was not. The compiler encountered a malformed expression or operator that does not match the expected syntax for an equality comparison operation.

KUKA RobotSystemBasic

KRC0921

KUKA Robot KRC0921 - OPERAND NOT EQUAL TO, CHAR 2258

OPERAND NOT EQUAL TO, CHAR 2258

This alarm indicates a syntax error in KRL source code at character position 2258 where an operand was expected to be equal to a specific value but was not. The compiler encountered a malformed expression or operator that does not match the expected syntax for an equality comparison operation.

Common Causes

  • Missing or incorrect equality operator (==) in conditional statement
  • Mismatched data types in comparison operation (e.g., comparing INT with CHAR)
  • Typo in variable name or operand reference
  • Missing operand on either side of the equality operator
  • Incorrect syntax in IF, WHILE, or UNTIL statement condition

Troubleshooting Steps

  1. 1Open the KRL source file and navigate to character position 2258 to identify the exact location of the syntax error
  2. 2Review the line containing the error and verify the conditional statement syntax (IF, WHILE, UNTIL, etc.)
  3. 3Ensure both operands are properly defined and the equality operator (==) is correctly used
  4. 4Check that data types on both sides of the comparison are compatible or properly type-cast
  5. 5Compare the syntax against KUKA KRL documentation examples for proper conditional statement formatting
  6. 6Correct the syntax error and recompile the program to verify the alarm is resolved

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