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FANUC Alarm PFMS-004 — WARN … program is in use

Manufacturer wording — WARN %s program is in use
The manual prints placeholders; your controller fills them in with the real group, axis or number.

FANUC PFMS-004 (“WARN … program is in use”): The specified program is being edited or executing. First check: ABORT.G the specified program.

Updated 2026-09-17 · LogrobotLM reference

Description

The specified program is being edited or executing.

Remedy

ABORT.G the specified program. Or select it once more after selecting another program.

Related codes

PFMS-002WARN Connection is disconnectedPFMS-003WARN Receive negative replyPFMS-005PAUSE. G CMI error(code = …)

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 →