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FANUC Alarm MHND-164 — WARN … Illegal type

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

FANUC MHND-164 (“WARN … Illegal type”): A MACRO was called with a parameter that is illegal. First check: Check the MACRO call in the TP program.

Updated 2026-09-17 · LogrobotLM reference

Description

A MACRO was called with a parameter that is illegal. The parameter has the wrong data

Remedy

Check the MACRO call in the TP program.

Related codes

MHND-162WARN doing unpause in prompt boxMHND-163WARN doing continue in prompt boxMHND-165WARN … missingMHND-166WARN Status Menu does not exist

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 →