If you have lost your home position or need to correct it, follow this sequence:
Before tweaking parameters, understand the logic. The Fanuc OT uses a for reference return. The machine looks for a one-pulse signal from the encoder (the "marker pulse") as the axis moves toward the deceleration limit switch.
Adjusting specific parameters can yield immediate, measurable improvements in your daily turning operations. 1. Backlash Compensation (Parameters 0535 – 0536)
: Put the machine in MDI mode or Emergency Stop state. Access Setting Screen : Press the [SETTING] function key.
Optimizing the time constants and acceleration parameters allows the axes to reach rapid traverse speeds (G00) more aggressively without causing structural vibration or servo alarms. Over a long production run, shaving a half-second off every positioning move drastically reduces cycle times. 4. Position Loop Gain (Parameter 517)
When reference return fails, don't guess. Check .
: For systems with absolute encoders:
In conclusion, the FANUC OT reference parameter is a valuable tool for optimizing CNC machine performance. By understanding its key features, benefits, and best practices, users can unlock improved accuracy, productivity, and efficiency in their machining operations.
There are two ways to set home on a 0T. The (safer, more precise) method is the Grid Shift , not moving the physical deceleration dog.