The moment 1815.4 is set to 1, the CNC takes the current raw data from the encoder and writes it into Parameter 1860 . This creates the permanent link between the electrical encoder signal and the mechanical zero of the machine. Common Troubleshooting Scenarios
Fanuc Parameter 1860 defines the maximum allowable position deviation limit (following error) for each axis during motion, acting as a safeguard against mechanical issues or heavy loading [1]. If deviation exceeds this setting, the control triggers a 410/411 Position Deviation alarm, which can sometimes be resolved by adjusting the value through the PARAM screen after enabling parameter write [1]. To manage this, you can learn more from the official Fanuc America overview. fanuc parameter 1860
No parameter exists in isolation. 1860 works in concert with several others: The moment 1815
Cycle the machine power to clear the alarm and finalize the position. Machine Metrics Safety Warning If deviation exceeds this setting, the control triggers