Fanuc Ot 900 Parameter List May 2026

They are stored in (Static RAM) backed by a battery. If the battery dies, these parameters are lost—and the machine becomes a brick.

Unlike standard 000–899 parameters that control feedrates, axis assignment, and user preferences, the (often referred to as Fanuc OT 900 parameters) governs the hardware configuration , software options , and built-in PMC (Programmable Machine Controller) diagnostics . Modifying these incorrectly can crash your machine—but understanding them can resurrect a dead control. fanuc ot 900 parameter list

For daily operators, your job is to and never modify these values unless under service guidance. For maintenance engineers, understanding bits like 904.7 (PMC enable) and 908.7 (turret type) will save hours of downtime. They are stored in (Static RAM) backed by a battery