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If the motor turns a different speed than the screw (e.g., Motor turns 2 times for 1 turn of the screw):
Upon booting up, the CNC will automatically calculate the new encoder relationship and .
Sets the total degree threshold (usually 360.000 degrees) after which a rotary axis wraps its position back to zero. Grid Shift
By following this guide, you can confidently adjust Fanuc Parameter 1860, recover from a lost zero, and keep your CNC machining center running with original factory precision. Remember: The parameter itself never crashes the machine – only the incorrect value typed by the user does. When in doubt, revert to zero and call a professional. fanuc parameter 1860 full
DS0300 Alarm (APZ = 0).
If the absolute encoder battery dies, the machine loses its zero position. After replacing the battery, you must re-establish machine zero. Parameter 1860 allows you to "tell" the control where the new zero is relative to the mechanical hard stops.
One of the most practical uses of Parameter 1860 occurs during procedures. This is often required after: If the motor turns a different speed than the screw (e
| Phase | Action | Speed Control | Parameter | |-------|--------|---------------|-----------| | | Move from current position to an intermediate point (specified in G28 block) | G00 rapid rate | Parameter 1420 (Rapid traverse) | | 2 | Move from intermediate point to the machine reference point | Lower speed for final approach & deceleration | Parameter 1860 |
Detection units (the smallest increment the machine can move).
How to Enable Parameter Write Enable (PWE) on a Fanuc CNC Remember: The parameter itself never crashes the machine
If your system uses a high-resolution detection unit of , entering 10000 sets a physical deviation limit of only 1.0000 mm. Step-by-Step Guide to Changing Parameter 1860
: Machine power cycle is mandatory if modified. Related Sister Parameters
Across different FANUC models and machine tool builder configurations, Parameter 1860 can appear in unexpected contexts.
: 2-word axis (Long Word / 32-bit signed integer per axis) Input Type : Locked Parameter (System Internal)