Reference position updating is not performed . This forces the control system to bypass automatic synchronization updates when crossing the coordinate boundary. This setting is mandatory when an external feedback scale lacks structural rotation data markers and relies strictly on continuous physical accumulation. 2. Interaction with Related Parameters
Leave 1860 alone and execute shifts via Grid Shift Parameter 1850.
| NRT Bit Setting | Parameter No. 1860/1861 Behavior | |---|---| | 0 (Default) | – The control will update parameters 1860/1861 with the current reference position as needed. | | 1 (Set) | Reference point value is not changed – Parameters 1860/1861 remain fixed; useful when using a scale that has no revolution data. | fanuc parameter 1860 full
The configuration of parameter 1860 involves setting a specific value that determines the level of advanced preview and optimization. The value range for this parameter varies depending on the FANUC control system version and the specific machine model.
The internal system automatically updates Parameter 1860 to match the new combined calculation. Steps to Safely Reset Home Position (Setting up APC) Reference position updating is not performed
) is vital for complex multi-axis milling, turning, and profiling. Parameter 1860 works closely with Parameter 1815 and Parameter 1861 to dictate exactly how and when the CNC system refreshes its reference position calculation relative to physical coordinates.
When setting up the FANUC Servo Serial Bus (FSSB), the control uses Parameter 1860 alongside parameters like 1815 (Position Detector Type) and 2024 (Number of Pulses per Motor Rotation) to initialize the axis loop. How Parameter 1860 is Calculated 1860/1861 Behavior | |---|---| | 0 (Default) |
, then counter capacity = 4000 pulses. The CNC will think one motor rev = 4000 pulses, causing the reference point to occur twice per physical motor revolution → unstable grid.