Fanuc Parameter 1860 -
Whenever you deal with encoder issues or motor replacements, keep your machine tool builder's master parameter sheet handy, and always back up your parameters before making any structural changes to the 1800-series parameter blocks.
Go to the OFFSET/SETTING page and change "Parameter Write" to 1. Ignore the resulting alarm.
The axis momentarily sticks due to the transition from dynamic friction to static friction and back.
The specific steps to set parameter 1860 can vary slightly depending on the FANUC CNC system model. Generally, the process involves:
Are you currently seeing any on the screen? fanuc parameter 1860
FANUC Parameter 1860 is a small numeric value with a big responsibility. Whether it's serving as the first part of an absolute reference point, managing rotary axis behavior, or handling an older backlash acceleration function, it's a cornerstone of axis control. Understanding its role on your specific machine is not just a technical exercise; it's a prerequisite for safe and accurate operation. Respect the parameter, respect the procedure, and your FANUC control will reward you with years of reliable, precise service.
It is a vital "sanity check" for your machine. Without a properly tuned 1860 value, a slight mechanical shift or encoder glitch could go unnoticed, leading to inaccurate machining or tool collisions.
In the FANUC control system, Parameter 1860 (often referred to as a critical bit-type parameter used to indicate whether the absolute position of an axis has been established Core Function: Absolute Position Zero (APZ) Parameter 1860 is an Axis Parameter
On a standard rotary axis (like a C-axis or A-axis table), passing the 0-degree point can alter how position registers refresh. Whenever you deal with encoder issues or motor
Optimize 1860 for speed without sacrificing repeatability.
This is why user feedback like "New values will automatically be loaded into par 1860 and 1861" is so common. For the Two-Stage Backlash function, the workflow might be different, but for absolute positioning, this is the standard operating procedure.
Fanuc is a critical axis-specific parameter used to store the current position of an absolute position detector (absolute encoder). It represents the coordinate value of the machine's current position within the absolute position detection system. Key Function & Behavior
In some systems, 1860 and 1861, together with parameters like 1250, 1401, 5002, and 5003, are used for more advanced reference point management, as mentioned by users on Industry Arena. This underscores that parameter relationships can be complex and control-specific. The axis momentarily sticks due to the transition
controls the behavior of reference position updating when machine coordinates pass a specified threshold on a rotational axis. Managing coordinates accurately is a critical part of maintaining precise CNC machining parameters . It plays an essential role in configuring absolute position encoders, managing scale feedback systems, and ensuring proper coordinate rounding.
The control is trying to communicate with the encoder type specified in Parameter 1860, but the data packet returning from the encoder is corrupted, missing, or mismatched. Check the feedback cable connections.
0 (Disabled, relying purely on standard parameter 1851 backlash compensation) 20 to 70 (With 50 being a standard baseline) Related Parameters