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Parameter 1860 is used by the CNC control to track the physical location of an axis even when the power is turned off, provided the machine is equipped with absolute encoders and battery backup. Homing & Synchronization
Parameter 1860 monitors this lag strictly during G00 rapid movements. If the physical axis falls behind the commanded position by a value greater than the amount stored in Parameter 1860, the CNC system immediately halts operation. It drops the ready signals, cuts power to the servo amplifiers, engages the mechanical brakes, and displays a on the CRT or LCD screen. Parameter 1860 vs. Parameter 1828
FANUC Parameter 1860 is a critical configuration setting in FANUC CNC systems that defines the for each individual servo axis . Often referred to by technicians as the "following error" or "servo lag" limit, this parameter serves as a vital software safety net. It prevents mechanical damage, protects machine operators, and ensures the structural integrity of the CNC machine during high-speed movements. fanuc parameter 1860 full
If your machine is constantly tripping a alarm during rapid movements, Parameter 1860 is flagging a genuine system failure. While you can temporarily increase the value in Parameter 1860 to diagnose the issue, the root cause is rarely the parameter itself. Look for these common mechanical and electrical issues: 1. Mechanical Binding or Heavy Friction
When setting parameter 1860, users should consider factors such as: Parameter 1860 is used by the CNC control
Select the axis you want to adjust (X, Y, Z, etc.) and input the new value.
A common confusion exists among Fanuc parameters. Here is the breakdown: It drops the ready signals, cuts power to
When a CNC machine executes a rapid traverse command, the CNC command generator calculates where the axis should be at any given millisecond. The servo motor tries to keep up with this command. The physical distance between where the machine should be and where it actually is is called the position deviation. Parameter 1860 dictates exactly how much deviation the system will tolerate at high speeds before triggering an emergency shutdown. The Functional Role of Parameter 1860
