LogrobotLM

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FANUC Alarm MOTN-305 — WARN Can't maintain speed L:…

Manufacturer wording — WARN Can't maintain speed L:%d^5
The manual prints placeholders; your controller fills them in with the real group, axis or number.

FANUC MOTN-305 (“WARN Can't maintain speed L:…”): Can’t maintain program speed on the path be of robot constraint. First check: This is just a notification.

Updated 2026-09-17 · LogrobotLM reference

Description

Can’t maintain program speed on the path be of robot constraint.

Remedy

This is just a notification. You do not have to do anything for this warning messsage.

Related codes

MOTN-303WARN Can't maintain CDist L:…MOTN-304WARN CS:Prog speed achieved L:…MOTN-306STOP Can't replanMOTN-307STOP Mismatch MMR

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 →