LogrobotLM

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KUKA Error 1557 — CHANNEL FULL

Info

Displayed as KSS01557 on KRC4 / KRC5 controllers

KUKA 1557 (“CHANNEL FULL”): The channel is already occupied by the maximum number of tasks. First check: Wait until at least one task has been completed.

Updated 2026-09-09 · LogrobotLM reference

Cause

The channel is already occupied by the maximum number of tasks.

Effect

None.

Troubleshooting

Wait until at least one task has been completed.

Related codes

1556SINEC L2 BUS CHANNEL NOT OPEN1558CHANNEL MUST BE OPENED/CLOSED1555INCORRECT OR INCOMPLETE CHANNEL PARAMETER1559WRONG CHANNEL

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 →