v1.5.3: Tag Error Isolation Enhancements
Introduces advanced tag-level fault isolation and connection error classification across protocol families.
Version 1.5.3 introduces a more advanced runtime error model that preserves per-tag quality isolation while improving protocol-level reliability decisions.

✨ Enhancements
Fieldbus Reliability Model
Protocol Error Safety:
ProtocolErroris now treated as connection-level by default to avoid masking real communication or session failures.Source-Aware Classification: Tag-scope error detection now distinguishes adapter protocols (OPC UA, SNMP, MTConnect/Haas) from other field protocol families.
Address Validation Model: Tag error scope now uses protocol address parser checks aligned with Protocol Inspector findings instead of generic assumptions.
Performance Enhancements
- Cached Parser Delegates: Address parse delegates are cached by protocol to minimize reflection overhead in hot error paths.
Proxus v1.5.3
Released on February 8, 2026