Press the PARAM key, then press PAGE DOWN until you reach the 900 range, or type the number and press the softkey for parameter search.

Your tool post won’t index. The problem is not mechanical but logical: a 900-series bit parameter tells the PMC how to interface with the turret servo or hydraulic clutch. If that bit toggles due to corruption, the turret will freeze.

N0900 P 01100001

A more flexible method uses parameters 6071 through 6079 to call hidden macro programs O9001 through O9009. The syntax is simple:

Prior to making any changes, back up all critical system data: Tool offsets Standard parameters (0000–8000 series) PMC parameters and diagnostics Hexadecimal and Binary Structure

Understanding the FANUC 0t 900 Parameter List for CNC Lathes