LogrobotLM

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FANUC Alarm APSH-111 — WARN READ IO parm … is wrong type

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

FANUC APSH-111 (“WARN READ IO parm … is wrong type”): The READ IO MACRO was called with illegal parameters. First check: Check the MACRO call in the TP program.

Updated 2026-09-17 · LogrobotLM reference

Description

The READ IO MACRO was called with illegal parameters. READ IO(signal name string,

Remedy

Check the MACRO call in the TP program.

Related codes

APSH-100WARN …APSH-110WARN READ IO parm … missingAPSH-112WARN signal … does not existAPSH-113WARN can't fetch signal type

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 →