What causes KUKA Robot alarm KRC0891?

Incorrect operator symbol used in expression (e.g., using '=' instead of '==' for comparison). Invalid special character or non-ASCII character in code that breaks syntax parsing. Missing or misplaced operator between operands (e.g., 'A B' instead of 'A + B'). Improperly escaped or unmatched quotes/brackets causing parser to misinterpret symbols. Copy-paste errors introducing corrupted characters from non-KRL text editors or sources.

How do I fix KUKA Robot alarm KRC0891?

1. Navigate to the line number indicated in the error message within the KRL source file 2. Examine the exact character or operator at the flagged location and verify it is valid KRL syntax 3. Check operator usage: comparison operators (==, !=, , =), arithmetic operators (+, -, *, /), and assignment (=) 4. Remove or correct any special characters, non-ASCII characters, or whitespace issues around the error location 5. Verify all quotes, parentheses, and brackets are properly matched and not corrupted 6. Reload the program in the KRC editor and attempt recompilation to confirm the syntax error is resolved

KUKA Robot codes

axismd.ai

KUKA Robot Controller

System · Basic

Alarm KRC0891

KUKA Robot KRC0891 - INVALID SIGN 2227

This alarm indicates an invalid sign or operator has been encountered in KRL program syntax at the specified location. The parser detected a character or symbol that is not recognized as valid KRL syntax, preventing proper program compilation or interpretation.

KUKA RobotSystemBasic

KRC0891

KUKA Robot KRC0891 - INVALID SIGN 2227

INVALID SIGN 2227

Common Causes

Incorrect operator symbol used in expression (e.g., using '=' instead of '==' for comparison)
Invalid special character or non-ASCII character in code that breaks syntax parsing
Missing or misplaced operator between operands (e.g., 'A B' instead of 'A + B')
Improperly escaped or unmatched quotes/brackets causing parser to misinterpret symbols
Copy-paste errors introducing corrupted characters from non-KRL text editors or sources

Troubleshooting Steps

1Navigate to the line number indicated in the error message within the KRL source file
2Examine the exact character or operator at the flagged location and verify it is valid KRL syntax
3Check operator usage: comparison operators (==, !=, <, >, <=, >=), arithmetic operators (+, -, *, /), and assignment (=)
4Remove or correct any special characters, non-ASCII characters, or whitespace issues around the error location
5Verify all quotes, parentheses, and brackets are properly matched and not corrupted
6Reload the program in the KRC editor and attempt recompilation to confirm the syntax error is resolved

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