KUKA Robot codes
KUKA RobotSystemBasic

KRC0827

KUKA Robot KRC0827 - INVALID INPUT CHARACTER 2163

INVALID INPUT CHARACTER 2163

An invalid character was encountered during KRL program parsing or compilation in the specified object. The character at the indicated position does not conform to KRL syntax rules and prevents successful program interpretation.

Common Causes

  • Special characters or non-ASCII characters used in variable names or code statements
  • Incorrect quote types (curly quotes instead of straight quotes) copied from external sources
  • Control characters or hidden Unicode characters in the source code file
  • Improperly formatted strings or comments containing unsupported character encodings
  • File encoding mismatch (UTF-8 vs. ASCII) causing character interpretation errors

Troubleshooting Steps

  1. 1Open the affected KRL program object in the KUKA IDE and navigate to the line number indicated in the alarm message
  2. 2Carefully inspect the character immediately before and after the flagged position for non-standard or special characters
  3. 3Verify that all variable names, function names, and identifiers use only alphanumeric characters and underscores
  4. 4Check for copied code from external sources and replace any smart quotes or special formatting with standard ASCII equivalents
  5. 5Re-save the file explicitly in ASCII or UTF-8 encoding without BOM using the IDE's file encoding options
  6. 6Recompile the program to verify the syntax error is resolved

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