KUKA Robot codes
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KUKA Robot Controller

System · Basic

Alarm KRC0884

KUKA Robot KRC0884 - OPERAND OR EXPRESSION EXPECTED 2220

This syntax error occurs when the KRL compiler expects an operand or expression at a specific location in the code but encounters invalid or missing syntax instead. The compiler cannot parse the statement because a required value, variable, function call, or mathematical expression is absent or malformed.

KUKA RobotSystemBasic

KRC0884

KUKA Robot KRC0884 - OPERAND OR EXPRESSION EXPECTED 2220

OPERAND OR EXPRESSION EXPECTED 2220

This syntax error occurs when the KRL compiler expects an operand or expression at a specific location in the code but encounters invalid or missing syntax instead. The compiler cannot parse the statement because a required value, variable, function call, or mathematical expression is absent or malformed.

Common Causes

  • Missing operand after an operator (e.g., 'x +' without a second value)
  • Incomplete or malformed function call missing required parameters
  • Invalid variable reference or undefined <object name> used in expression
  • Missing or misplaced parentheses, brackets, or delimiters in complex expressions
  • Syntax error such as incorrect assignment operator or comparison operator usage

Troubleshooting Steps

  1. 1Review the line number indicated in the error message and locate the exact position where the error occurs
  2. 2Check that all operators have both a left and right operand (e.g., ensure 'x + y' not 'x +')
  3. 3Verify all function calls have complete parameter lists and proper syntax with parentheses
  4. 4Confirm all variables and <object name> references are correctly declared and spelled
  5. 5Check for balanced parentheses, brackets, and braces in the problematic expression or statement
  6. 6Rebuild or recompile the program after correcting the syntax to verify the fix resolves the alarm

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