LogrobotLM

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KUKA Error 1549 — HANDLER NOT ALLOWED

Error

Displayed as KSS01549 on KRC4 / KRC5 controllers

KUKA 1549 (“HANDLER NOT ALLOWED”): Impermissible HANDLE programmed in CWRITE or CREAD. First check: Specify a valid HANDLE.

Updated 2026-09-09 · LogrobotLM reference

Cause

Impermissible HANDLE programmed in CWRITE or CREAD.

Effect

Stop via braking ramp. All active commands are inhibited.

Troubleshooting

Specify a valid HANDLE.

Related codes

1550NO MORE DATA/VARIABLE USED SEVERAL TIMES1547THE TARGET VARIABLE IS NOT OF TYPE REAL1546WRONG PULSE DURATION1552CHANNEL ALREADY OPEN

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 →