FANUC Alarm PRIO-331 — CC-LK Reg data invalid
Manufacturer wording — CC-LK Reg data invalid(%d)
The manual prints placeholders; your controller fills them in with the real group, axis or number.
FANUC PRIO-331 (“CC-LK Reg data invalid”): A numerical value set to a remote register was not a 16 bit integer. First check: "CC-Link function of robot supports only unsigned or signed 16 bit word data.
Updated 2026-09-17 · LogrobotLM reference
Description
A numerical value set to a remote register was not a 16 bit integer.
Remedy
"CC-Link function of robot supports only unsigned or signed 16 bit word data. Do not enter another type of value into a remote register.
Related codes
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 →