A 4th or 5th axis rotary table has high inertia. Setting 1860 too low on the rotary axis will cause "clunking" on start/stop. For a rotary axis, start with 1860 = 150 ms. Increase until motion is smooth, even if it slows indexing.
Type 1860 using the alphanumeric keypad, then press the (Number Search) softkey.
After changing, turn the parameter write off ( PARAMETER WRITE=0 ). completely to apply the changes. 4. Parameter 1860 and Absolute Pulse Coders (APC) fanuc parameter 1860 full
During heavy roughing with large cutter engagement, use a . This provides a "soft start" that prevents the tool from digging in or chipping at corner entries. Some advanced operators even program a macro to change 1860 dynamically via a G10 command based on tool type.
Ensure 1860 is set to 360 and that parameter 1815.6 (NRT) is properly configured for your encoder type (0 or 1). A 4th or 5th axis rotary table has high inertia
This parameter stores the absolute position of the machine's axes relative to the machine zero point. It is primarily relevant for machines equipped with absolute encoders, where the position must be retained even after the power is turned off.
Yes. G28 returns to the reference position defined by parameters including 1860. G30 (2nd, 3rd, 4th reference return) uses different parameters (e.g., 1861, 1862). Increase until motion is smooth, even if it slows indexing
An incorrect setting in Parameter 1860 will result in the machine moving an incorrect distance (e.g., commanding 100mm but moving 50mm or 200mm), rendering the machine unable to perform accurate machining or threading.