NOTE. 1 For ease of explanation, the models may be. classified as follows: T series: 16i-TB/160i-TB/160is-TB/18i-TB/180i-TB/180is- CNC Fanuc Resetting home position After switching batteries

In the world of Fanuc CNC controls, parameters are the silent architects of machine performance. They dictate everything from axis travel limits to servo response. Among the hundreds of critical parameters, stands out as one of the most influential for machine dynamics, surface finish, and cycle time.

By understanding the multiple lives of Parameter 1860, you will be equipped to troubleshoot home position problems, optimize acceleration performance, handle absolute encoder resets, and avoid costly parameter-related errors on your FANUC-controlled machine tools.

to 1 at the correct physical location triggers the CNC to take the current encoder reading and write it into Maintenance Warnings : Changing manually will force a Power Cycle (Alarm 000) and will likely cause the to reset to 0, requiring a new homing procedure. 🛠️ How to View and Set Reference Positions

Move the machine axis manually (using the handwheel/jog) to its true, physical home location or alignment marks. Go back to Parameter 1815 and change to 1 . Phase 3: Finalize and Verify Power cycle the CNC machine.

Parameter 1260 or Parameter 1008 (NRT bit) is misconfigured, telling the system not to update.

: If the backup battery for the absolute pulse coder dies, the data in Parameter 1860 may become invalid. This often results in a 300-series alarm (e.g., APC Alarm: Reference Return Required).

The reference position is established . The system knows exactly where the axis is located based on the absolute encoder data. 2. When Does Parameter 1860 Revert to 0?

FFG allows you to match the control's detection unit to various ball screw pitches and mechanical reduction ratios without changing hardware. The formula is: