If the deviation (error register value) exceeds the value in 1829 while the axis is not commanded to move, the system triggers a SV0410 (Excess Error - Stop) alarm to prevent uncontrolled drift or damage. Comparison: 1828 vs. 1829
: While sometimes linked to parameter 1829 in troubleshooting discussions, this often relates to active movement limits, though 1829 is often checked simultaneously. Troubleshooting and Setting the Value fanuc parameter 1829