Activating features like tool life management, increased memory, or high-speed skip.
Number of tool offset pairs expansion (16 to 32 pairs). Bit 7 (TFC): Tool nose radius compensation (G41/G42). Parameter 903: Expanded Hardware and Connectivity Bit 0 (CRT): Color CRT display interface support.
Spindle speed control / Constant surface speed control. Bit 2 (SCS): Axis control by synchronized control. Bit 3 (ABS): Absolute pulse coder position detection. Bit 4 (MEF): Macro executor function. Bit 5 (NWS): 2nd/3rd/4th reference point return. Bit 6 (FIN): F1-digit feed command. Bit 7 (EXP): Exponential interpolation. Parameter 901: Display and Memory Enhancements Bit 0 (NMC): Number of registerable programs expansion. Bit 1 (MBG): Background editing capability. Bit 2 (PRC): Polarity or coordinate rotation. Bit 3 (EDT): Playback editing function. Bit 4 (CRG): Custom macro B variables display. Bit 5 (MCR): Custom macro B function activation. Bit 6 (CLG): Cylinder interpolation. Bit 7 (POL): Polar coordinate interpolation. Parameter 902: Advanced Interpolation and Cycles Bit 0 (CFS): Chamfering and corner rounding.
The machine will likely throw a (Parameter Write Enabled). This is normal; just leave it until you’re done. fanuc ot 900 parameter list
If parameter 935 #5 is set to 1 , parameter 600 alarms may appear.
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.
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. Parameter 903: Expanded Hardware and Connectivity Bit 0
: Always backup your current parameters before making changes.
901: Tape/memory and programming features
When backing up a FANUC OT CNC system, you must document all three groups of settings: Bit 3 (ABS): Absolute pulse coder position detection
: Because 900-series parameters are related to purchased options, it is recommended to consult with the Machine Tool Builder before activation. Fanuc 0-T Parameter Overview | PDF - Scribd
You bought a used FANUC OT control from eBay to replace a failed unit. You must enter the from your original machine’s backup. Yes, the hardware is identical—but the option bits differ.