By understanding and applying the concepts discussed in this article, CNC users can take their machining operations to the next level, improving productivity, efficiency, and overall performance.
Defines the exact coordinate numbers that populate the "Machine Position" display once homing is completed.
Press the function key and access the [PARAM] sub-screen. Search for Parameter 1815 . Identify the target axis (e.g., X, Y, or Z). Change the APZ bit (typically Bit 4) from 1 to 0 .
To ensure optimal performance and accuracy, follow these best practices:
We restored power. The machine came alive with a cautious cough and moved on as if nothing had happened. I logged the incident and slept at home, the image of the pulsing dash like an ellipsis that wouldn't stop. fanuc parameter 1860 work
For example, if your machine operates on a 1-micron detection system, entering a value of 3000 into Parameter 1860 for the Z-axis will alter the calculated home position by exactly
If you recently replaced a
Under normal operation, the control updates this value automatically as the axis moves. ⚠️ Common Scenarios & "Work" Involved
FANUC parameter 1860 is a powerful, but often misunderstood, setting within the FANUC CNC ecosystem. Its primary roles are in managing the and serving as the first-stage acceleration value for the two-stage backlash acceleration function . This guide provides a deep dive into its functions, practical use, and crucial safety protocols, equipping you to optimize your machine's performance. By understanding and applying the concepts discussed in
Parameter 1860 (often referred to as ) is a non-editable, read-only system value that represents the absolute position (encoder count) of a machine axis. This parameter is central to how a CNC system "remembers" its location without requiring a home return (homing) every time it is powered on. The Function of Parameter 1860
Electronic shift value used to make fine micrometric adjustments to the reference point without moving physical dogs or switches. First Reference Position
The machine shifted off its reference mark by exactly one grid pitch interval.
18;write_to_target_document1a;__0TuaZSsB7SyqtsPhLy5yAs_20;92;0;a5; 0;115;0;53c; To help you specifically with this, I need to know: Search for Parameter 1815
On many 30i/31i series controls, there is a built-in spindle tuning screen. Navigate to: The control may automatically suggest a value for Parameter 1860 based on actual encoder feedback over several orientation cycles.
If the backup battery for the Absolute Pulse Coder (APC) dies while the machine is off, the absolute position data is lost.
Setting or modifying Parameter 1860 typically occurs during machine commissioning or after a mechanical repair, such as a ballscrew replacement. Enabling Edits
Without a correctly configured Parameter 1860, the CNC system would lose its "memory" of where the tools and workpieces are located relative to the machine bed. This parameter ensures that even if the machine is turned off for extended periods, it resumes operation with high precision, maintaining the integrity of the work coordinate systems and preventing potential mechanical crashes.