XML_TAGNEST
Tag nesting level too deep
Fanuc · R-30iA R-30iB Controller
What does XML_TAGNEST mean?
This fault occurs when the hierarchical nesting of XML tags in the file exceeds the maximum allowed depth for the parser. Deeply nested XML structures can consume excessive resources or violate internal processing limits, leading to parsing failure.
Common Causes
- The XML document structure contains an excessive number of nested tags, exceeding the parser's configured limit.
Repair Steps
Verified technical data. Last updated: March 2026
Source: Fanuc R-30iA R-30iB Controller