KUKA Robot codes
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KUKA Robot Controller

System · Basic

Alarm KRC0839

KUKA Robot KRC0839 - ’TO’ EXPECTED 2175

This alarm indicates a syntax error in KRL program code where the keyword 'TO' was expected but not found at the specified location in the source file. The parser encountered an unexpected token or structure while compiling the program, typically occurring in loop statements, motion commands, or conditional expressions that require the 'TO' keyword.

KUKA RobotSystemBasic

KRC0839

KUKA Robot KRC0839 - ’TO’ EXPECTED 2175

’TO’ EXPECTED 2175

This alarm indicates a syntax error in KRL program code where the keyword 'TO' was expected but not found at the specified location in the source file. The parser encountered an unexpected token or structure while compiling the program, typically occurring in loop statements, motion commands, or conditional expressions that require the 'TO' keyword.

Common Causes

  • Missing 'TO' keyword in FOR loop syntax (e.g., 'FOR i=1 2 10' instead of 'FOR i=1 TO 10')
  • Incorrect syntax in PTP or LIN motion commands missing 'TO' before target specification
  • Missing 'TO' in UNTIL or REPEAT conditional statements
  • Typo or misspelling replacing the 'TO' keyword with similar characters
  • Copy-paste error or incomplete code editing leaving syntax incomplete

Troubleshooting Steps

  1. 1Open the KRL source file indicated in the alarm message in the KUKA IDE or text editor
  2. 2Navigate to line 2175 or the line number specified in the alarm details
  3. 3Review the syntax around that line and identify any FOR loops, motion commands, or conditionals
  4. 4Verify that all loop statements use correct 'FOR i=value1 TO value2' syntax
  5. 5Check motion commands (PTP, LIN, CIRC) to ensure proper 'TO' keyword placement before target positions
  6. 6Correct the syntax error, save the file, and recompile the program to verify the alarm clears

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