Fanuc Parameter 1829 [better] Jun 2026
2-word (32-bit) integer data type, designated per axis.
If you are frequently seeing an "Excess Error Stop" alarm linked to this parameter, consider these steps:
If the physical axis falls behind the commanded position by a value greater than what is specified in Parameter 1829, the controller immediately halts the machine and triggers a servo alarm. Parameter 1829 vs. Parameter 1828
CNC machinists and maintenance technicians frequently encounter axis position errors on FANUC control systems. Among the critical settings governing axis positioning accuracy, plays a vital role. When improperly configured or when mechanical wear occurs, misconfigurations related to this parameter can trigger alarms, halt production, and cause localized positioning inaccuracies. Understanding Parameter 1829 helps maintenance teams systematically diagnose and resolve these servo-related faults. What is FANUC Parameter 1829? fanuc parameter 1829
If you tell me the exact Fanuc control model and software/version (e.g., Series 0i-MF, 30i-B, 31i-B5, etc.), I will provide the precise meaning, allowed values, and step-by-step change procedure for parameter 1829 for that model.
In the FANUC CNC architecture, Parameter 1829 defines the or the Position Loop Gain during specific cutting states (depending on the exact control series, such as 0i-D, 0i-F, 16i/18i, or 31i). The Concept of Position Loop Gain
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Fanuc Parameter 1829 plays a crucial role in setting up and configuring the machine's axis movement on Fanuc CNC machines. Understanding the function and setting of this parameter is essential to ensure accurate positioning and movement of the machine. By following the guidelines outlined in this article, users can effectively adjust and troubleshoot parameter 1829 to optimize their machine's performance.
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: Physical binds, packed chip buildup, or a lack of lubrication in the ballscrew can prevent the axis from reaching its precise target. 2-word (32-bit) integer data type, designated per axis
This is a safety mechanism. If the control tells a motor to move, but the feedback loop (encoder) reports that the motor is lagging too far behind, the control assumes something is physically blocking the axis or the drive system has failed. Shutting down prevents catastrophic mechanical crashes. Common Causes of SV0411 Alarms Related to Parameter 1829
To help narrow down the specific issue with your machine, please share:
sets the position deviation limit when the axis is moving . Because an axis requires more tolerance to accelerate, decelerate, and fight cutting forces while moving, the value in 1829 is almost always significantly larger than the value in 1828. The Consequence: Alarm SV0411 (Excess Error) and fight cutting forces while moving
To isolate mechanical issues from electrical faults, technicians often temporarily increase the value of Parameter 1829.
Navigate to the specific axis experiencing the error (X, Y, Z, etc.). Input the calculated new value and press . Go back to the Settings page and change PWE back to 0.