Understanding Fanuc Parameter 1860: Reference Position and Absolute Encoders
If the system detects a discrepancy between the physical position and the value in 1860, it may trigger a "Request for Reference Position Return". How Parameter 1860 Works During Startup
For a machine tool builder or maintenance technician, correctly configuring Parameter 1860 is a non-negotiable step during initial commissioning or after replacing a servo motor or coder.
For CNC machines with rotary axes (like turrets or fourth-axis tables), Parameter 1860 is critical for establishing and maintaining the in conjunction with Parameter 1861. This function is closely tied to the Absolute Pulse Coder (APC) and the 1815 parameter.
Knowing these details will allow me to provide the exact calculation steps and parameter structures for your specific machine setup. Share public link fanuc parameter 1860 work
When you lose zero-return or absolute encoder synchronization, resetting the reference point is a common procedure that involves 1860 and 1861 . This is a delicate operation; any mistake could cause a crash.
Long Integer (typically an axis-specific parameter).
If the control rejects the change, jog the axis slightly in the positive direction and try again. Power cycle the machine one final time. Vital Safety Precautions
The 1870 function is a software option that allows users to perform complex machining operations, such as simultaneous 5-axis machining, or to enable specific hardware configurations, like a second operator panel. When parameter 1860 is set to a specific value, it activates or deactivates this function, allowing users to customize their CNC system to meet their specific needs. This function is closely tied to the Absolute
🛠️ Common Scenarios Requiring Parameter 1860 Adjustments
Most issues related to Parameter 1860 arise after a or motor replacement.
Parameter 1861 is often the standard orientation shift (static offset), while 1860 is the synchronous error compensation . Changing 1861 without also checking 1860 will not fix rigid tapping issues—only orientation. Always verify both.
Understanding Fanuc Parameter 1860: Fine-Tuning Servo Performance This is a delicate operation; any mistake could
Parameter 1860 does not work in isolation. It is tightly coupled with:
Re-tensioning, replacing, or repairing ball screws changes the mechanical relationship between the motor turns and physical tool travel.
If your machine's zero point is slightly off (e.g., after a minor crash), you might adjust (Grid Shift).
Always back up all CNC parameters before making changes. Use a memory card or RS-232 to save your current backup. This operation requires access level 3 (maintenance) or higher.