Fanuc Parameter 1860 ((better)) Access

Defines the feedback resolution or the specific multiplier factor for the position detector stream. The Power-Up Logic

Establishes if the position transducer operates as an incremental or absolute pulse coder.

Declares that the axis hardware has an absolute encoder.

She didn’t type -211.

Follow the absolute encoder resynchronization procedure described above, which will automatically regenerate correct 1860 and 1861 values.

Go to Parameter 1815, scroll to the affected axis, and change Bit 4 (APZ) from 0 to 1 .

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In the FANUC CNC system, Parameter 1860 (often referenced as

If you adjusted Parameter 1860 and the misalignment grew worse, you likely applied the mathematical sign (+/-) incorrectly. If you added 50 and it got worse, subtract 100 to swing it back the other direction. Synchro Alarms (e.g., SV0476 or SV0500)

For Parameter 1860 changes to take effect, a is usually required. Turn off the main breaker, wait 30 seconds, and power the machine back up. Troubleshooting Common Issues The Axis Moves the Wrong Way After Adjustment Defines the feedback resolution or the specific multiplier

This indicates a conflict between the encoder hardware definition in Parameter 1860 and the resolution settings in Parameter 1861 or the servo initialization parameters (Parameter 2000 series). Conclusion

Indicates whether the absolute position reference point has been established or set.

In the world of CNC machining, precision is everything. When a FANUC-controlled machine loses its position or exhibits slight alignment errors, the culprit is often found within the system parameters. One specific parameter that plays a critical role in position calibration—especially after replacing a motor, encoder, or ball screw—is . She didn’t type -211

Under normal operating conditions, this parameter is set at the factory and never touched. However, specific maintenance and repair scenarios will alter the relationship between the motor encoder and the physical machine position.

This indicates the absolute position was lost. While often caused by a dead battery, an incorrect value in 1860 will prevent the system from synchronizing correctly even after the battery is replaced.