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FANUC Alarm PRIO-618 — PNIO(D) submod plug failed … …

Manufacturer wording — PNIO(D) submod plug failed %x %x
The manual prints placeholders; your controller fills them in with the real group, axis or number.

FANUC PRIO-618 (“PNIO(D) submod plug failed … …”): I/O Device function failed because the specified submodule is wrong. First check: Check the module specified by the two numbers included in the error message.

Updated 2026-09-17 · LogrobotLM reference

Description

I/O Device function failed because the specified submodule is wrong.

Remedy

Check the module specified by the two numbers included in the error message. The first number is the slot number, the second is the subslot number.

Related codes

PRIO-616PNIO: attach/detach TimeoutPRIO-617PNIO(D) mod plug failed … …PRIO-619PNIO(C) mismatch st … slot … …PRIO-620PNIO(C) station … deactivated

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 →