serves as a critical configuration point for axis position detection
: If 1860 is set incorrectly, the machine might "see" an axis that isn't there or fail to communicate with a real one, leading to FSSB-related alarms (like System Alarm 920 or 926). Initialization
To truly understand how Parameter 1860 works, you need to look at three key areas: fanuc parameter 1860 work
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.
Every modern FANUC spindle motor comes with a built-in encoder (often a pulse coder with 1024, 2048, or 4096 pulses per revolution). This encoder generates a that marks a reference position. However, due to mechanical tolerances in coupling the encoder to the spindle shaft, the Z-pulse rarely aligns exactly with the physical keyway or tool-change orientation required by the machine. serves as a critical configuration point for axis
Press the soft key to find the Parameter Write Enable (PWE) screen. Change the PWE value from 0 to 1 .
Using a non-contact spindle orientation sensor, they determine the spindle is stopping 0.05mm away from true zero radially. They calculate: Every modern FANUC spindle motor comes with a
If a ballscrew, axis servo motor, or linear scale is uncoupled and replaced, the structural alignment changes. Even if the motor is mounted perfectly, the internal absolute encoder alignment will be completely different from the original component. Adjusting Parameter 1860 allows you to re-align the machine zero perfectly back to its original physical state. 2. Physical Crashes and Axis Slippage
FANUC is a well-known Japanese company that specializes in the development and manufacture of industrial robots, CNC systems, and other automation products. FANUC's CNC (Computer Numerical Control) systems are widely used in various industries, including aerospace, automotive, and medical device manufacturing. One of the critical aspects of working with FANUC CNC systems is understanding and configuring parameters, which are essential for optimizing machine performance and ensuring safe operation.
: Changing this parameter often requires a machine power cycle, and sometimes the value will not be what was set initially if the encoder is not properly aligned first.