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KUKA Error 2231 — RIGHT OPERAND DIFFERENT FROM INT, CHAR

Displayed as KSS02231 on KRC4 / KRC5 controllers

KUKA 2231 (“RIGHT OPERAND DIFFERENT FROM INT, CHAR”): The right operand is not of data type “INT” or “CHAR”. First check: Modify the program accordingly.

Updated 2026-09-09 · LogrobotLM reference

Cause

The right operand is not of data type “INT” or “CHAR”.

Effect

The program cannot be executed.

Troubleshooting

Modify the program accordingly.

Related codes

2230LEFT OPERAND DIFFERENT FROM INT, CHAR2232BOTH OPERANDS DIFFERENT FROM INT, CHAR2229BOTH OPERANDS DIFFERENT FROM INT, REAL2233LEFT OPERAND DIFFERENT FROM BOOL

Indicative field information — the robot manufacturer's manual and safety procedures always prevail. Never bypass a safety device; apply lockout/tagout (LOTO) before any physical intervention. How this reference is built →