LogrobotLM

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KUKA Error 2258 — OPERAND DIFFERENT FROM BOOL

Displayed as KSS02258 on KRC4 / KRC5 controllers

KUKA 2258 (“OPERAND DIFFERENT FROM BOOL”): An operand of data type “BOOL” is expected. First check: Modify the program accordingly.

Updated 2026-09-09 · LogrobotLM reference

Cause

An operand of data type “BOOL” is expected.

Effect

The program cannot be executed.

Troubleshooting

Modify the program accordingly.

Related codes

2257OPERAND DIFFERENT FROM INT, CHAR2259LEFT OPERAND: INCORRECT ARRAY OR PATH2256OPERAND DIFFERENT FROM INT, REAL2260LEFT OPERAND: INCORRECT ARRAY

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 →