A very specific question! In FANUC CNC systems, parameter 1860 is related to the "Long Piece" or "Long Part" function, which allows for machining of long workpieces that exceed the standard travel limits of the machine. Here's a brief overview: Parameter 1860: Long Piece (Full)
This parameter enables or disables the Long Piece function. When set to 1 (enabled), the Long Piece function allows the machine to move beyond the standard software limits, permitting machining of longer workpieces.
To set parameter 1860, you typically need to:
Enter the parameter setting mode (usually by pressing a specific key or combination of keys on the CNC control panel). Navigate to parameter 1860. Set the value to 1 (enabled) or 0 (disabled). fanuc parameter 1860 full
Example: If you want to enable the Long Piece function, you would set parameter 1860 to 1: 1860 = 1 After setting the parameter, be sure to save the changes and restart the machine, if required. Keep in mind that incorrect parameter settings can lead to machine malfunction or safety issues. Always consult the FANUC documentation and/or contact a qualified FANUC technician if you're unsure about setting parameters. Do you have a specific FANUC CNC machine model or control system version you're working with? I'd be happy to help if I can!
In Fanuc CNC systems (such as the Series 0 Parameter 1860 stores the Absolute Position Detector (Encoder) offset . This value represents the amount of shift required to align the absolute encoder's internal reading with the machine's actual reference position. Key Functions & Characteristics : It acts as the "calibration" value for an absolute encoder. When you perform a zero-return or "homing" procedure on a machine with absolute encoders, the system calculates the difference between the encoder's current reading and the physical home position, then saves this value in Parameter 1860. Automatic Updates : Typically, you do manually enter a value here. When Parameter 1815 bits (APC and APZ) are toggled to set a new home position, the CNC automatically calculates and populates Parameter 1860. : It is an axis-specific parameter, meaning each axis ( , etc.) has its own unique 1860 value. en.industryarena.com Common Maintenance Scenarios Reference Position Loss : If the absolute encoder batteries die or the encoder cable is disconnected, the relationship between the mechanical position and the encoder data is lost. Re-establishing the home position will result in a new value being written to Parameter 1860. Grid Shift Correlation Parameter 1850 handles small mechanical "grid shifts" for fine-tuning, Parameter 1860 handles the primary data offset for the absolute detector. Tool Change Alignment : On some machines, if the -axis home position is reset, the value in 1860 changes, which may require you to re-verify the tool change height stored in Parameter 1241 en.industryarena.com How to View/Set Enable Writing : In MDI mode, go to the screen and set PARAMETER WRITE = 1 : Press the hard key, then the to locate the parameter for each axis. : Manual modification is rare and usually only done during advanced troubleshooting or when migrating parameters from a backup. cti-sumy.com.ua Are you currently troubleshooting a 300 APC Alarm (Ref Position Need Return) or have you recently replaced encoder batteries 64120EN 0i Parameter Manual.pdf
In Fanuc CNC systems, Parameter 1860 is a read-only axis parameter that stores the current position of the absolute position detector (absolute encoder). It is often referred to as the current position in the absolute detector or the "encoder count". Technical Overview : It tracks the raw position data from the absolute pulse coder. Unlike coordinate parameters you can manually edit (like 1240 for reference positions), this parameter is updated automatically by the system. : It is typically a 2-word axis parameter (long integer). : The value is established after an axis is successfully zeroed using Parameter 1815.4 (APZ) . If the axis has dropped (e.g., a Z-axis droop during emergency stop), this value may reflect that physical shift even if the machine's relative position display was reset. Key Related Parameters To understand how 1860 fits into the system, it is usually viewed alongside these coordinates and flags: Parameter 1815 : Used to set the absolute position detector (APC) and the zero position (APZ). Setting is what initializes the value in 1860. Parameter 1240–1243 : These define the coordinate values of the 1st through 4th reference positions in the machine coordinate system. Parameter 1850 : Often confused with 1860, this is the Grid Shift value used to adjust the zero point after a reference return. Maintenance & Troubleshooting Read-Only Nature : Users generally cannot change 1860's value manually in a "meaningful way" because it is a direct feedback value from the hardware. Axis Droop : In machines without counterweights, a spindle may droop during an E-stop before the brake engages. Parameter 1860 will record this displacement, which can lead to slight discrepancies in homing if not accounted for. Zeroing Procedure : If you replace an absolute encoder or lose your home position, you must set , cycle power, move to the physical home, and set it back to . This process "syncs" the mechanical position with the value now stored in 1860. For detailed technical specifications, refer to the Fanuc Series 0i-MODEL F Plus Parameter Manual Series 16i/18i Parameter Manual using these parameters? FANUC? M6 toolchange position. | Practical Machinist A very specific question
In FANUC CNC systems (such as Series 16i/18i/21i and 0i), Parameter 1860 is a critical axis-specific setting used to store and display the current position data of an absolute position detector (encoder). Parameter Definition Parameter Number : Absolute position detector current position data. : 4-word (integer). : Detection unit (e.g., 0.001mm or 0.0001 inch depending on machine settings). Technical Role Parameter 1860 is used by the CNC control to track the physical location of an axis even when the power is turned off, provided the machine is equipped with absolute encoders and battery backup. Homing & Synchronization : When the machine is homed, the system uses the value in 1860 alongside Parameter 1815 (which indicates if the absolute position is established via the APZ bit) to maintain the reference point. Manual Absolute (ABS) : This parameter interacts with the "Manual Absolute" setting which determines if manual moves update the absolute coordinate display. Focas Library Access : Developers using the Fanuc Focas Library access this data via the cnc_absolute function to read real-time axis positioning for external monitoring software. Critical Maintenance Procedures Because this parameter holds the machine's "memory" of where it is, it is central to two major maintenance tasks: Establishing Reference Points : If the absolute pulse coder (APC) batteries die, the absolute position is lost. After replacing batteries, you must move the axis to its physical home and toggle Parameter 1815 bit 4 (APZ) to "1". This action updates Parameter 1860 with the new zero-point data. Parameter Backup : When performing a full system backup, Parameter 1860 must be recorded. If these values are lost and not restored correctly, the machine will not know its physical location, potentially leading to overtravel alarms or crashes. Troubleshooting "Full" or Error States If you encounter a "full" error or discrepancy related to this parameter: How to Enable Parameter Write Enable (PWE) on a Fanuc CNC
In Fanuc CNC systems (Series 16i/18i/21i and 0i-MODEL B/C/D/F), Parameter 1860 current position of the Absolute Pulse Coder (APC) at the reference position. While parameter is used to tell the control "where" home is, parameter is the underlying numerical value the encoder reports at that exact spot. It is almost never manually edited by an operator; instead, the CNC system calculates and updates this value automatically when you perform a reference point return or set the (Absolute Position Zero) bit. ⚙️ The Mechanics of Parameter 1860 : Stores the APC counter value when the axis is at the reference point. Relationship to 1861 : Because APC values can be very large, parameter is often used as a continuation of 1860 to handle higher-order bits. : Typically a 2-word axis type, meaning it can store large integers separately for each axis. ⚠️ When to Interact with 1860 Reference Point Recovery : When an absolute encoder battery dies, the machine "forgets" the relationship between its physical position and the encoder count. Setting 1815 bit 4 (APZ) to 1 at the correct physical location triggers the CNC to take the current encoder reading and write it into Maintenance Warnings : Changing manually will force a Power Cycle (Alarm 000) and will likely cause the to reset to 0, requiring a new homing procedure. 🛠️ How to View and Set Reference Positions If you are looking for "1860 full" because you are resetting your machine's home after a battery failure, follow this standard procedure: Series 16i-18i -MODEL B - Parameter Manual.pdf - Drivesul
Fanuc Parameter 1860 stores the absolute encoder pulse count for each axis, which is crucial for resolving 300 APC alarms caused by lost positional data, often due to dead batteries. Fixing the alarm involves replacing the batteries, setting Parameter 1815 (bit 4) to 1, and re-establishing the physical home position to automatically update Parameter 1860. For detailed instructions, you can read the Practical Machinist discussion and CNCmakers technical support . CNC Fanuc Resetting home position After switching batteries When set to 1 (enabled), the Long Piece
Understanding FANUC Parameter 1860: A Comprehensive Guide FANUC, a renowned Japanese company, is a leading manufacturer of industrial robots, CNC machines, and other automation solutions. In the realm of CNC machining, FANUC's control systems are widely used for their precision, reliability, and flexibility. One crucial aspect of FANUC's control systems is the parameter setting, which allows users to customize and optimize the machine's performance. In this article, we will delve into the specifics of FANUC parameter 1860, exploring its significance, functions, and configuration. What is FANUC Parameter 1860? FANUC parameter 1860 is a specific setting within the FANUC control system that relates to the machine's operation and performance. This parameter is part of a larger system of parameters that allow users to customize and fine-tune the CNC machine's behavior. Parameter 1860, in particular, is associated with the "High-speed machining" or "Advanced preview" function. Function of FANUC Parameter 1860 The primary function of parameter 1860 is to control the advanced preview function, which enables the CNC machine to predict and optimize the machining process. This feature allows the machine to:
Look ahead : Analyze the program code and anticipate upcoming machining operations. Optimize feed rates : Adjust feed rates to achieve optimal machining conditions, reducing cycle times and improving surface finish.