1860 Full ((top)) - Fanuc Parameter

Here haven't found any official source stating that Fanuc Parameter 1860 is "Full" or related to memory capacity. Fanuc Parameter 1860 is typically related to .

Fanuc Parameter 1860 stores the absolute encoder pulse count for each axis, which is crucial for resolving 300 APC alarms caused by lost positional data, often due to dead batteries. Fixing the alarm involves replacing the batteries, setting Parameter 1815 (bit 4) to 1, and re-establishing the physical home position to automatically update Parameter 1860. For detailed instructions, you can read the Practical Machinist discussion and CNCmakers technical support . CNC Fanuc Resetting home position After switching batteries

However, Parameter 1860 specifically interacts with the (Parameter 1821). In standard configurations (using Semi-Closed Loop control with standard encoders), Parameter 1860 is often set to 2 or calculated based on the Gear Ratio. fanuc parameter 1860 full

As the servo motors move, the 1860 value fluctuates to reflect the continuous stream of data coming from the pulse coders. Why It Matters to Technicians

The absolute reference position has not been established yet for that axis. Here haven't found any official source stating that

At its core, Parameter 1860 functions as a for a given axis. In many Fanuc systems, this parameter displays a raw value representing the absolute position of the axis as reported by the encoder .

To correctly set Parameter 1860, you must understand the relationship between the mechanical drive components and the detection unit. Fixing the alarm involves replacing the batteries, setting

The formula used to determine Parameter 1860 for full-closed loops is:

During rapid positioning, axes accelerate and decelerate at their maximum capabilities. Due to inertia, friction, and the physics of mass in motion, a small amount of lag is normal. However, if the lag becomes too large, it indicates a severe problem.

If you need help calculating a safe value for your machine, let me know: