LogrobotLM

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KUKA Error 2257 — OPERAND DIFFERENT FROM INT, CHAR

Displayed as KSS02257 on KRC4 / KRC5 controllers

KUKA 2257 (“OPERAND DIFFERENT FROM INT, CHAR”): An operand of data type “INT” or “CHAR” is expected. First check: Modify the program accordingly.

Updated 2026-09-09 · LogrobotLM reference

Cause

An operand of data type “INT” or “CHAR” is expected.

Effect

The program cannot be executed.

Troubleshooting

Modify the program accordingly. 1

Related codes

2256OPERAND DIFFERENT FROM INT, REAL2258OPERAND DIFFERENT FROM BOOL2255EXPRESSION DIFFERENT FROM CHAR, INT, ENUM2259LEFT OPERAND: INCORRECT ARRAY OR PATH

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 →