Fanuc Parameter 1860 Full Extra Quality Now

| Problem | Cause | |---------|-------| | or PS0031 | 1860 set too high → reference point signal missed due to overshoot | | Inconsistent reference position (drift every cycle) | Speed too high for deceleration zone length (dog/switch timing mismatch) | | Long cycle time | 1860 set unnecessarily low (e.g., 100 mm/min on a large VMC) | | Machine overshoots reference point | 1860 > rapid rate (not allowed; parameter clamped internally) |

Because this parameter holds the machine's "memory" of where it is, it is central to two major maintenance tasks: Establishing Reference Points fanuc parameter 1860 full

: This bit determines if an absolute position detector is being used for that axis (1 = absolute, 0 = incremental). | Problem | Cause | |---------|-------| | or

For the changes to take effect, you must cycle the power of the machine. rapid rate (not allowed

| Machine Type | Rigidity | Typical 1860 Range (ms) | | :--- | :--- | :--- | | Small VMC (BT30) | High | 30–60 | | Large VMC (BT40/BT50) | Medium | 60–120 | | Heavy-duty lathe (X-axis) | Medium | 80–150 | | Gantry mill (heavy slide) | Low | 120–250 | | High-speed machining center | Very High | 10–40 |